{"id":9706,"date":"2018-02-05T14:41:10","date_gmt":"2018-02-05T13:41:10","guid":{"rendered":"https:\/\/xcerra.com\/?page_id=9706"},"modified":"2025-07-24T08:56:36","modified_gmt":"2025-07-24T15:56:36","slug":"package-type-wlcsp","status":"publish","type":"page","link":"https:\/\/www.cohu.com\/package-type-wlcsp","title":{"rendered":"WLCSP"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_section-5fbb2e8d7ab023ee2ac2da83473f2485\">\n.avia-section.av-av_section-5fbb2e8d7ab023ee2ac2da83473f2485{\nbackground-repeat:no-repeat;\nbackground-image:url(\/wp-content\/uploads\/2019\/04\/ECT-banner-product-pages-1266x56-px.jpg);\nbackground-position:50% 0%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-av_section-5fbb2e8d7ab023ee2ac2da83473f2485 main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  avia-full-contain avia-bg-style-scroll container_wrap fullsize'  data-section-bg-repeat='contain'><div class='container av-section-cont-open' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-9706'><div class='entry-content-wrapper clearfix'>\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3kkrkq-b1734d45f40fce18e66770d7d7000235\">\n.avia-section.av-3kkrkq-b1734d45f40fce18e66770d7d7000235{\nbackground-color:#f2f2f2;\nbackground:linear-gradient( to bottom, #f2f2f2, #cecece );\n}\n<\/style>\n<div id='av_section_2'  class='avia-section av-3kkrkq-b1734d45f40fce18e66770d7d7000235 main_color avia-section-small avia-no-border-styling  avia-builder-el-1  el_after_av_section  el_before_av_one_half  avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-9706'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-9iaqlm-66fd4d6b49132612f574bc4f1b3591d6\">\n.flex_column.av-9iaqlm-66fd4d6b49132612f574bc4f1b3591d6{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-9iaqlm-66fd4d6b49132612f574bc4f1b3591d6 av_three_fifth  avia-builder-el-2  el_before_av_two_fifth  avia-builder-el-first  first flex_column_div av-zero-column-padding  '     ><section  class='av_textblock_section av-juv03h0k-cef3bddad5d7ecf2376ced82c7aa2c55 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h1><span style=\"color: #808080;\">WLCSP Package Interface Solutions<br \/>\n<\/span><\/h1>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-juv059hk-80bdb498d80751cc3ed1ed5248d85f4f\">\n#top .hr.hr-invisible.av-juv059hk-80bdb498d80751cc3ed1ed5248d85f4f{\nheight:10px;\n}\n<\/style>\n<div  class='hr av-juv059hk-80bdb498d80751cc3ed1ed5248d85f4f hr-invisible  avia-builder-el-4  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-juv03y6z-93bc73a8f423e5776cd7dbc9f1a85ff7 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h3>Challenges and Solutions for Contacting Wafer-Level Chip Scale Package Devices<\/h3>\n<p>Wafer Level Chip Scale Packages have been in use for over a decade years now, and the number of devices packed this way continues to grow at a significant pace. WLCSPs are primarily choice for mobile devices for this reason.<\/p>\n<p>The other reasons to package at the wafer level are economic: The packaging itself is inexpensive and packaging at the wafer level allows testing at the wafer level. Final testing at the wafer level eliminates a test step compared the traditional wafer probe + final test.<\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-79luze-8d55b82936991f534c5d097c3384bd95\">\n.flex_column.av-79luze-8d55b82936991f534c5d097c3384bd95{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-79luze-8d55b82936991f534c5d097c3384bd95 av_two_fifth  avia-builder-el-6  el_after_av_three_fifth  avia-builder-el-last  flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-juv059hk-3-5ebeed653f12360ac0c9de17a3eca8f3\">\n#top .hr.av-juv059hk-3-5ebeed653f12360ac0c9de17a3eca8f3{\nmargin-top:3px;\nmargin-bottom:3px;\n}\n.hr.av-juv059hk-3-5ebeed653f12360ac0c9de17a3eca8f3 .hr-inner{\nwidth:50px;\n}\n<\/style>\n<div  class='hr av-juv059hk-3-5ebeed653f12360ac0c9de17a3eca8f3 hr-custom  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avia-img-lazy-loading-not-18726 avia_image ' src=\"\/wp-content\/uploads\/2019\/04\/Package-Type-WLCSP_transparent.png\" alt='WLCSP Package Test Solutions' title=''  height=\"118\" width=\"300\"  itemprop=\"thumbnailUrl\" srcset=\"\/wp-content\/uploads\/2019\/04\/Package-Type-WLCSP_transparent.png 300w, \/wp-content\/uploads\/2019\/04\/Package-Type-WLCSP_transparent-150x59.png 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div><\/div><\/div><\/p><\/div>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='after_section_2'  class='main_color av_default_container_wrap container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-9706'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-6gc6vu-d3f0b3ba5fa8a49876674c901f4c8e25\">\n.flex_column.av-6gc6vu-d3f0b3ba5fa8a49876674c901f4c8e25{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-6gc6vu-d3f0b3ba5fa8a49876674c901f4c8e25 av_one_half  avia-builder-el-9  el_after_av_section  el_before_av_one_half  avia-builder-el-first  first flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-63ximy-a00b3b004b98d7c497a84a2ce5b9e7f9\">\n#top .av-special-heading.av-63ximy-a00b3b004b98d7c497a84a2ce5b9e7f9{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-63ximy-a00b3b004b98d7c497a84a2ce5b9e7f9 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-63ximy-a00b3b004b98d7c497a84a2ce5b9e7f9 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-63ximy-a00b3b004b98d7c497a84a2ce5b9e7f9 av-special-heading-h3  avia-builder-el-10  el_before_av_toggle_container  avia-builder-el-first '><h3 class='av-special-heading-tag '  itemprop=\"headline\"  >Test Contactor \/ Probe Head Solutions<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jvoa5jvo-ce3fa61c4ef0a9feaab53e0cada03817\">\n#top .togglecontainer.av-jvoa5jvo-ce3fa61c4ef0a9feaab53e0cada03817 p.toggler{\ncolor:#363636;\nborder-color:#0053a1;\n}\n#top .togglecontainer.av-jvoa5jvo-ce3fa61c4ef0a9feaab53e0cada03817 p.toggler .toggle_icon{\ncolor:#363636;\nborder-color:#363636;\n}\n#top .togglecontainer.av-jvoa5jvo-ce3fa61c4ef0a9feaab53e0cada03817 .toggle_wrap .toggle_content{\ncolor:#363636;\nborder-color:#0053a1;\n}\n<\/style>\n<div  class='togglecontainer av-jvoa5jvo-ce3fa61c4ef0a9feaab53e0cada03817 av-minimal-toggle  avia-builder-el-11  el_after_av_heading  avia-builder-el-last  toggle_close_all' >\n<section class='av_toggle_section av-73kb6y-04aafbedf049ed317f7384a0e0596bb3'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-1' data-fake-id='#toggle-id-1' class='toggler  av-title-above av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-1' data-slide-speed=\"200\" data-title=\"Atlas Contactor \/ Probe Head\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: Atlas Contactor \/ Probe Head\" data-aria_expanded=\"Click to collapse: Atlas Contactor \/ Probe Head\">Atlas Contactor \/ Probe Head<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-1' aria-labelledby='toggle-toggle-id-1' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"text\" ><p><span style=\"color: #0053a1;\"><strong>Optimal Performance for Large I\/O Count Devices and High-End Digital<\/strong><\/span><\/p>\n<p>QuadTech probe solution with cruciform tip strength that stands up to lateral force without bending, plus an enhanced compliance window to accommodate package stack height tolerance.<\/p>\n<p>Atlas offers electrical performance that allows the customer to test to the true performance of the device. Atlas WLCSP test contactors achieve mechanical reliability with a rigid \u201ccruciform\u201d tip applied to Cohu\u2019s QuadTech flat probe technology.\u00a0 The Atlas offers a short electrical path, with lower capacitance and inductance, that is ideal for functional and AC parametric testing of WLCSP devices that require high system bandwidth and throughput gains in large multisite test applications.<\/p>\n<p>The cruciform tip provides increased tip rigidity with a much greater immunity to breakage. The advantages for the customer include increased run times between contactor cleaning, increased probe life, increased yield, and reduced system down time for contactor maintenance.<\/p>\n<div  class='avia-button-wrap av-1whwx6-bf3e16143df9d390af1531568947d281-wrap avia-button-left  avia-builder-el-12  el_before_av_button  avia-builder-el-first '><a href='https:\/\/www.cohu.com\/atlas'  class='avia-button av-1whwx6-bf3e16143df9d390af1531568947d281 av-link-btn avia-icon_select-no avia-size-medium avia-position-left avia-color-dark'   aria-label=\"Read More\"><span class='avia_iconbox_title' >Read More<\/span><\/a><\/div>\n<\/div><\/div><\/div><\/section>\n<section class='av_toggle_section av-6hb4lm-cdf8b7de6a2e912318927a09ddcbd47c'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-2' data-fake-id='#toggle-id-2' class='toggler  av-title-above av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-2' data-slide-speed=\"200\" data-title=\"cBoa Contactor \/ Probe Head\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: cBoa Contactor \/ Probe Head\" data-aria_expanded=\"Click to collapse: cBoa Contactor \/ Probe Head\">cBoa Contactor \/ Probe Head<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-2' aria-labelledby='toggle-toggle-id-2' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"text\" ><p><span style=\"color: #0053a1;\"><strong>Cost-Effective, High-Performance Contactor or Probe Head for High-Volume Production Test<\/strong><\/span><\/p>\n<p>cBoa contactors and probe heads are the solution for contacting high frequency devices for package test or final test at wafer. The robust design and materials of the cBoa probe withstand the rigors of high-volume test by providing longer life and higher yield. The homogenous DUT side plunger provides longer run times between cleaning and\u00a0increased probe life.<\/p>\n<p>The cBoa features a stainless-steel spring for tri-temp testing and performs in operating temperatures of -55\u00b0C to +155\u00b0C.\u00a0With a bandwidth up to 27 GHz, cBoa can be used to test some of the highest frequency devices.<\/p>\n<p>The enhanced compliance window accommodates package stack height tolerances well.<\/p>\n<div  class='avia-button-wrap av-36m5fu-858763655a25402511afd2ba460f2855-wrap avia-button-left  avia-builder-el-13  el_after_av_button  el_before_av_button '><a href='https:\/\/www.cohu.com\/cboa'  class='avia-button av-36m5fu-858763655a25402511afd2ba460f2855 av-link-btn avia-icon_select-no avia-size-medium avia-position-left avia-color-dark'   aria-label=\"Read More\"><span class='avia_iconbox_title' >Read More<\/span><\/a><\/div>\n<\/div><\/div><\/div><\/section>\n<section class='av_toggle_section av-br5eju-8fa8df215d53ef742db12226e7fdd912'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-3' data-fake-id='#toggle-id-3' class='toggler  av-title-above av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-3' data-slide-speed=\"200\" data-title=\"cPython Kelvin Contactor \/ Probe Head\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: cPython Kelvin Contactor \/ Probe Head\" data-aria_expanded=\"Click to collapse: cPython Kelvin Contactor \/ Probe Head\">cPython Kelvin Contactor \/ Probe Head<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-3' aria-labelledby='toggle-toggle-id-3' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"text\" ><p><span style=\"color: #0053a1;\"><strong>High performance kelvin contact for high volume production test<\/strong><\/span><\/p>\n<p>cPython Kelvin contactors and probe heads provide superior electrical and thermal performance with significant cost savings. This makes cPython Kelvin ideal for lab and high-volume production test of analog and mixed signal integrated circuits \u2013 for applications such as power control, A-D and D-A converters, audio, video, power amplifiers, photonics, optical MEMS and sensors.<\/p>\n<p>cPython Kelvin probes are electrically isolated and mechanically independent force and sense paths for true Kelvin contact for taking accurate measurements, even under high current conditions. These robust probes provide hundreds of thousands of insertions or touchdowns, and a bandwidth up to 26 GHz.\u00a0\u00a0cPython Kelvin probes can land on 0.4 mm pitch targets, and their tip spacing is 90 \u00b5m to land on small targets. cPython probes are available with homogeneous tips to optimize performance.<\/p>\n<div  class='avia-button-wrap av-plvsrw-6dffb33d7b9fbdef379c202160e251b3-wrap avia-button-left  avia-builder-el-14  el_after_av_button  el_before_av_button '><a href='https:\/\/www.cohu.com\/cpython'  class='avia-button av-plvsrw-6dffb33d7b9fbdef379c202160e251b3 av-link-btn avia-icon_select-no avia-size-medium avia-position-left avia-color-dark'   aria-label=\"Read More\"><span class='avia_iconbox_title' >Read More<\/span><\/a><\/div>\n<\/div><\/div><\/div><\/section>\n<section class='av_toggle_section av-3ujciy-1764ee58fc18d3016037352ee1af323e'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-4' data-fake-id='#toggle-id-4' class='toggler  av-title-above av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-4' data-slide-speed=\"200\" data-title=\"cRacer Contactor \/ Probe Head\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: cRacer Contactor \/ Probe Head\" data-aria_expanded=\"Click to collapse: cRacer Contactor \/ Probe Head\">cRacer Contactor \/ Probe Head<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-4' aria-labelledby='toggle-toggle-id-4' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"text\" ><p><span style=\"color: #0053a1;\"><strong>Lowest COT for next-generation 5G mmWave FR2 up to 54+ GHz<\/strong><\/span><\/p>\n<p>cRacer utilizes robust spring probe technology for testing singulated packages or probe heads for wafer probe (bumped\/pad) applications with fine pitch and WLCSP compatibility \u2013 ranging from 150 \u00b5m to 650 \u00b5m, covering the majority of 5G devices.<\/p>\n<p>cRacer features a stainless-steel spring for tri-temp testing and performance in operating temperatures -55\u00b0C to +155\u00b0C.<\/p>\n<div  class='avia-button-wrap av-20il96-44365a9cd227ba57ff2a4e8dff877aa7-wrap avia-button-left  avia-builder-el-15  el_after_av_button  el_before_av_button '><a href='https:\/\/www.cohu.com\/cracer\/'  class='avia-button av-20il96-44365a9cd227ba57ff2a4e8dff877aa7 av-link-btn avia-icon_select-no avia-size-medium avia-position-left avia-color-dark'   aria-label=\"Read More\"><span class='avia_iconbox_title' >Read More<\/span><\/a><\/div>\n<\/div><\/div><\/div><\/section>\n<section class='av_toggle_section av-3vakgq-a3b7a9e1106ff7c071d6f0f3eb943a93'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-5' data-fake-id='#toggle-id-5' class='toggler  av-title-above av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-5' data-slide-speed=\"200\" data-title=\"cViper Probe Head\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: cViper Probe Head\" data-aria_expanded=\"Click to collapse: cViper Probe Head\">cViper Probe Head<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-5' aria-labelledby='toggle-toggle-id-5' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"text\" ><p><span style=\"color: #0053a1;\"><strong>High Performance Probe Head for High Volume Production Test<\/strong><\/span><\/p>\n<p>cViper is an ultra-fine pitch probe head for RF and high speed digital WLCSP. \u00a0cViper is ideal for lab and large volume production test for precision analog, RF, sensors and mobility devices.\u00a0 Low loop inductance and high bandwidth up to 27 GHz, cViper offers low and stable contact resistance for singulated devices or wafer-level test.\u00a0\u00a0 A variety of contact materials to optimize performance are available with device pitch down to 100 \u00b5m.<\/p>\n<div  class='avia-button-wrap av-atkzgq-fe47ff08ca2fe52504469f71bc8c89c5-wrap avia-button-left  avia-builder-el-16  el_after_av_button  el_before_av_button '><a href='https:\/\/www.cohu.com\/cviper'  class='avia-button av-atkzgq-fe47ff08ca2fe52504469f71bc8c89c5 av-link-btn avia-icon_select-no avia-size-medium avia-position-left avia-color-dark'   aria-label=\"Read More\"><span class='avia_iconbox_title' >Read More<\/span><\/a><\/div>\n<\/div><\/div><\/div><\/section>\n<section class='av_toggle_section av-yix56-74bc9dcf340e1f6988de25ae56fbd376'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-6' data-fake-id='#toggle-id-6' class='toggler  av-title-above av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-6' data-slide-speed=\"200\" data-title=\"Gemini Kelvin Contactor \/ Probe Head\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: Gemini Kelvin Contactor \/ Probe Head\" data-aria_expanded=\"Click to collapse: Gemini Kelvin Contactor \/ Probe Head\">Gemini Kelvin Contactor \/ Probe Head<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-6' aria-labelledby='toggle-toggle-id-6' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"text\" ><p><span style=\"color: #0053a1;\"><strong>Industry preferred high performance, high value, low cost true kelvin QuadTech contacting solution<\/strong><\/span><\/p>\n<p>Gemini Kelvin probes and contactors provide a first-rate solution that effortlessly makes reliable, true Kelvin contact for high-volume final test of both singulated packages and wafer-level devices. Gemini Kelvin is an ideal solution for devices such as power controllers, A-D and D-A converters, power amplifiers and audio and video circuits.<\/p>\n<p>At 3.22 mm test height, the Gemini Kelvin is an excellent all-around spring probe with low inductance, high bandwidth, and excellent current-carrying capacity. The DUT side tip design accurately maintains its 100 \u00b5m spacing for the life of the probe. Customers report typical probe life of 500 k to 800 k package insertions, or over 2M touchdowns at wafer-level test. The offset tip allows manageable board layout with a board-side spacing of 0.4 mm.<\/p>\n<div  class='avia-button-wrap av-18a7y4-308ee268d1c35757d79153495d048738-wrap avia-button-left  avia-builder-el-17  el_after_av_button  el_before_av_button '><a href='https:\/\/www.cohu.com\/geminikelvin'  class='avia-button av-18a7y4-308ee268d1c35757d79153495d048738 av-link-btn avia-icon_select-no avia-size-medium avia-position-left avia-color-dark'   aria-label=\"Read More\"><span class='avia_iconbox_title' >Read More<\/span><\/a><\/div>\n<\/div><\/div><\/div><\/section>\n<section class='av_toggle_section av-6t50e2-ec9f91a7637266609de53bedd4fcde38'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-7' data-fake-id='#toggle-id-7' class='toggler  av-title-above av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-7' data-slide-speed=\"200\" data-title=\"Mercury Contactor \/ Probe Head\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: Mercury Contactor \/ Probe Head\" data-aria_expanded=\"Click to collapse: Mercury Contactor \/ Probe Head\">Mercury Contactor \/ Probe Head<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-7' aria-labelledby='toggle-toggle-id-7' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"text\" ><p><span style=\"color: #0053a1;\"><strong>Industry preferred high performance, high value, low cost QuadTech contacting solution<\/strong><\/span><\/p>\n<p>Mercury probes and contactors are excellent spring probes for the laboratory though they were designed with the robust qualities needed for high-volume production test. Their unique design ensures excellent plating quality for low, consistent resistance, long life, and high-test yields. Mercury probes are available with minimum pitches of 0.3 mm, 0.4 mm, 0.5 mm, and 0.8 mm, to provide the best performance at any device pitch. Mercury probes have bandwidths of up to 22 GHz, and can carry over 3 Amps of current. The Mercury is an excellent choice for any test application.<\/p>\n<div  class='avia-button-wrap av-5gn1ga-a525195e795986b552df97a154001b3f-wrap avia-button-left  avia-builder-el-18  el_after_av_button  el_before_av_button '><a href='https:\/\/www.cohu.com\/mercury'  class='avia-button av-5gn1ga-a525195e795986b552df97a154001b3f av-link-btn avia-icon_select-no avia-size-medium avia-position-left avia-color-dark'   aria-label=\"Read More\"><span class='avia_iconbox_title' >Read More<\/span><\/a><\/div>\n<\/div><\/div><\/div><\/section>\n<section class='av_toggle_section av-2vzckq-b18a5024ae4f3525a63ae03cb3c1c510'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div role=\"tablist\" class=\"single_toggle\" data-tags=\"{All} \"  ><p id='toggle-toggle-id-8' data-fake-id='#toggle-id-8' class='toggler  av-title-above av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"headline\"  role='tab' tabindex='0' aria-controls='toggle-id-8' data-slide-speed=\"200\" data-title=\"xWave Contactor \/ Probe Head\" data-title-open=\"\" data-aria_collapsed=\"Click to expand: xWave Contactor \/ Probe Head\" data-aria_expanded=\"Click to collapse: xWave Contactor \/ Probe Head\">xWave Contactor \/ Probe Head<span class=\"toggle_icon\"><span class=\"vert_icon\"><\/span><span class=\"hor_icon\"><\/span><\/span><\/p><div id='toggle-id-8' aria-labelledby='toggle-toggle-id-8' role='region' class='toggle_wrap  av-title-above'  ><div class='toggle_content invers-color av-inherit-font-color hasCustomColor av-inherit-border-color'  itemprop=\"text\" ><p><span style=\"color: #0053a1;\"><strong>Broadband Production Solution for cmWave and mmWave up to 100 GHz<\/strong><\/span><\/p>\n<p>The xWave contactor utilizes patented hybrid contacting technology to optimize RF performance and provide robustness for production testing of the most challenging cmWave and mmWave devices. Inside the xWave contactor are embedded patch antennas and coplanar waveguides for both wireless and wired communication.<\/p>\n<p>In addition to wireless communication xWave contactors minimize the number of transitions between the DUT and tester through the use of co-planar waveguide structures that make direct connection with the DUT, bypass the PCB, and connect to the tester with either coaxial cable or waveguides.<\/p>\n<div  class='avia-button-wrap av-6uwnu-5f89a64c2fccb84eb1d6de6a3b282d15-wrap avia-button-left  avia-builder-el-19  el_after_av_button  avia-builder-el-last '><a href='https:\/\/www.cohu.com\/xwave'  class='avia-button av-6uwnu-5f89a64c2fccb84eb1d6de6a3b282d15 av-link-btn avia-icon_select-no avia-size-medium avia-position-left avia-color-dark'   aria-label=\"Read More\"><span class='avia_iconbox_title' >Read More<\/span><\/a><\/div>\n<\/div><\/div><\/div><\/section>\n<\/div><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5ootju-6e10493f7c570864cd52ade164be0dcc\">\n.flex_column.av-5ootju-6e10493f7c570864cd52ade164be0dcc{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-5ootju-6e10493f7c570864cd52ade164be0dcc av_one_half  avia-builder-el-20  el_after_av_one_half  el_before_av_hr  flex_column_div av-zero-column-padding  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-o0f8ze-244f1527254d5765f33519c80297020c\">\n#top #wrap_all .avia-icon-list-container.av-o0f8ze-244f1527254d5765f33519c80297020c .av_iconlist_title{\nfont-size:18px;\ncolor:#363636;\n}\n.avia-icon-list-container.av-o0f8ze-244f1527254d5765f33519c80297020c .iconlist_content{\ncolor:#363636;\n}\n<\/style>\n<div  class='avia-icon-list-container av-o0f8ze-244f1527254d5765f33519c80297020c  avia-builder-el-21  el_before_av_iconlist  avia-builder-el-first '><ul class='avia-icon-list avia_animate_when_almost_visible avia-icon-list-left av-iconlist-big av-o0f8ze-244f1527254d5765f33519c80297020c'>\n<li><div class='iconlist_icon av-cucsqi-6ba7ed4cb547b8f8d509dba681e80349 avia-font-entypo-fontello avia-iconfont avia-font-entypo-fontello'><span class='av-icon-char' data-av_icon='\ue812' data-av_iconfont='entypo-fontello' aria-hidden=\"true\"><\/span><\/div><article class=\"article-icon-entry \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Icon: Contacting Challenges\"><h4 class='av_iconlist_title iconlist_title  av_inherit_color'  itemprop=\"headline\" >Contacting Challenges<\/h4><\/header><div class='iconlist_content av_inherit_color'  itemprop=\"text\" ><ul>\n<li>High parallelism<\/li>\n<li>High ball counts (due to high parallelism)<\/li>\n<li>Fine pitches (and getting finer)<\/li>\n<li>Planarity issues (compared to wafer probe)<\/li>\n<li>Challenging test requirements (compared to wafer probe)<\/li>\n<li>Landing two probes for Kelvin applications<\/li>\n<li>Making good contact without creating solderability issues<\/li>\n<\/ul>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<\/ul><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-la32zu-74fcfb9158420cec445e9d708b9898d4\">\n#top #wrap_all .avia-icon-list-container.av-la32zu-74fcfb9158420cec445e9d708b9898d4 .av_iconlist_title{\nfont-size:18px;\ncolor:#363636;\n}\n.avia-icon-list-container.av-la32zu-74fcfb9158420cec445e9d708b9898d4 .iconlist_content{\ncolor:#363636;\n}\n<\/style>\n<div  class='avia-icon-list-container av-la32zu-74fcfb9158420cec445e9d708b9898d4  avia-builder-el-22  el_after_av_iconlist  el_before_av_iconlist '><ul class='avia-icon-list avia_animate_when_almost_visible avia-icon-list-left av-iconlist-big av-la32zu-74fcfb9158420cec445e9d708b9898d4'>\n<li><div class='iconlist_icon av-3lhrui-0994f95bbd2440e0eaa6d2296962ed3b avia-font-entypo-fontello avia-iconfont avia-font-entypo-fontello'><span class='av-icon-char' data-av_icon='\ue86b' data-av_iconfont='entypo-fontello' aria-hidden=\"true\"><\/span><\/div><article class=\"article-icon-entry \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Icon: Contactor Features\"><h4 class='av_iconlist_title iconlist_title  av_inherit_color'  itemprop=\"headline\" >Contactor Features<\/h4><\/header><div class='iconlist_content av_inherit_color'  itemprop=\"text\" ><ul>\n<li>Super-sharp tips<\/li>\n<li>Lower-force probes<\/li>\n<li>Large compliance windows<\/li>\n<li>Fine-pitch Kelvin probes<\/li>\n<li>Dimensionally-stable contactor materials<\/li>\n<li>Mechanical simulation capabilities<\/li>\n<\/ul>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<\/ul><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-r9b2gq-b809899c4cfd38049d8882b9f8e59d98\">\n#top #wrap_all .avia-icon-list-container.av-r9b2gq-b809899c4cfd38049d8882b9f8e59d98 .av_iconlist_title{\nfont-size:18px;\ncolor:#363636;\n}\n.avia-icon-list-container.av-r9b2gq-b809899c4cfd38049d8882b9f8e59d98 .iconlist_content{\ncolor:#363636;\n}\n<\/style>\n<div  class='avia-icon-list-container av-r9b2gq-b809899c4cfd38049d8882b9f8e59d98  avia-builder-el-23  el_after_av_iconlist  avia-builder-el-last '><ul class='avia-icon-list avia_animate_when_almost_visible avia-icon-list-left av-iconlist-big av-r9b2gq-b809899c4cfd38049d8882b9f8e59d98'>\n<li><div class='iconlist_icon av-25fezu-ef8c0846751c4a414444c317e20c00ac avia-font-entypo-fontello avia-iconfont avia-font-entypo-fontello'><span class='av-icon-char' data-av_icon='\ue809' data-av_iconfont='entypo-fontello' aria-hidden=\"true\"><\/span><\/div><article class=\"article-icon-entry \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Icon: Package Features\"><h4 class='av_iconlist_title iconlist_title  av_inherit_color'  itemprop=\"headline\" >Package Features<\/h4><\/header><div class='iconlist_content av_inherit_color'  itemprop=\"text\" ><ul>\n<li>Smallest possible X\/Y size: same as die for fan-in packages<\/li>\n<li>Minimal Z height: thickness of wafer + thickness of redistribution layer + ball height<\/li>\n<li>Lightest-weight package<\/li>\n<li>Economical testing: final test on wafer eliminates one entire test step<\/li>\n<li>Most cost-effective packaging<\/li>\n<li>Best package for electrical performance<\/li>\n<\/ul>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<\/ul><\/div><\/p><\/div>\n\n<style 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itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><a href='https:\/\/www.cohu.com\/contact-us' title='Contact Sales' aria-label='Contact Sales'  class='iconbox_icon heading-color avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue83c' data-av_iconfont='entypo-fontello' title=\"Contact Sales\" desc=\"Contact Sales\" ><\/a><div class=\"iconbox_content\"><header class=\"entry-content-header\" aria-label=\"Icon: Contact Sales\"><h3 class='iconbox_content_title '  itemprop=\"headline\" ><a href='https:\/\/www.cohu.com\/contact-us' title='Contact Sales' >Contact Sales<\/a><\/h3><\/header><div class='iconbox_content_container av_inherit_color'  itemprop=\"text\" ><p>Complete our contact form.<\/p>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ifjzgw-9a7936eff6bb65bb1b759315ecd5bf18\">\n.flex_column.av-ifjzgw-9a7936eff6bb65bb1b759315ecd5bf18{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-ifjzgw-9a7936eff6bb65bb1b759315ecd5bf18 av_two_fifth  avia-builder-el-28  el_after_av_one_third  el_before_av_one_fourth  flex_column_div av-zero-column-padding  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-khvtzgld-1-76a16076341aed254961a22fc5e5a177\">\n.iconbox.av-khvtzgld-1-76a16076341aed254961a22fc5e5a177 .iconbox_icon{\nbackground-color:#ffffff;\n}\n#top #wrap_all .iconbox.av-khvtzgld-1-76a16076341aed254961a22fc5e5a177 .iconbox_content_title{\ncolor:#ffffff;\n}\n.iconbox.av-khvtzgld-1-76a16076341aed254961a22fc5e5a177 .iconbox_content_container{\ncolor:#ffffff;\n}\n<\/style>\n<article  class='iconbox iconbox_left_content av-khvtzgld-1-76a16076341aed254961a22fc5e5a177  avia-builder-el-29  avia-builder-el-no-sibling '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='iconbox_icon heading-color avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue8b1' data-av_iconfont='entypo-fontello'  ><\/div><div class=\"iconbox_content\"><header class=\"entry-content-header\" aria-label=\"Icon: Expertise\"><h3 class='iconbox_content_title '  itemprop=\"headline\" >Expertise<\/h3><\/header><div class='iconbox_content_container av_inherit_color'  itemprop=\"text\" ><p>Learn more about our Interface Solutions.<\/p>\n<\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-12q2uq8-488fe01b0583209f3b315fc8ca91d53e\">\n.flex_column.av-12q2uq8-488fe01b0583209f3b315fc8ca91d53e{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-12q2uq8-488fe01b0583209f3b315fc8ca91d53e av_one_fourth  avia-builder-el-30  el_after_av_two_fifth  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