{"id":101,"date":"2025-07-25T10:53:15","date_gmt":"2025-07-25T01:53:15","guid":{"rendered":"https:\/\/www.seiken.co.jp\/english\/wp\/?page_id=101"},"modified":"2025-08-28T10:20:55","modified_gmt":"2025-08-28T01:20:55","slug":"double_ended","status":"publish","type":"page","link":"https:\/\/www.seiken.co.jp\/english\/products\/probe\/double_ended\/","title":{"rendered":"Double-Ended Probes"},"content":{"rendered":"<div class=\"anchor\">\n<ul class=\"anchor_list container\">\n<li><a href=\"#structure\">Structure<\/a><\/li>\n<li><a href=\"#type\">Types<\/a><\/li>\n<li><a href=\"#usage\">Details<\/a><\/li>\n<li><a href=\"#order\">Orders<\/a><\/li>\n<li><a href=\"#jig\">Fixture Manufacturing<\/a><\/li>\n<\/ul><\/div>\n<section id=\"structure\" class=\"container\">\n<h2>The Structure of Double-Ended Probes<\/h2>\n<div class=\"column2\">\n<div class=\"txt_wrap\">\n<p>Unlike conventional single-ended probes, double-ended contact probes feature plungers on both ends,<br \/>\n            offering greater flexibility in compact testing environments. Each probe consists of four key components:\n          <\/p>\n<div class=\"box -border--thin\">\n<p>\n              <span class=\"-bold\">Two Plungers: <\/span>These make contact with the test target and the test fixture from<br \/>\n              either side, delivering consistent and balanced pressure.<br \/>\n              <br \/><span class=\"-bold\">Pipe: <\/span>Encases the spring and guides the plungers, ensuring overall<br \/>\n              structural stability.<br \/>\n              <br \/><span class=\"-bold\">Spring: <\/span>Maintains the correct contact force at both ends, enabling stable<br \/>\n              and reliable electrical connections.\n            <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<figure>\n          <img decoding=\"async\" src=\"https:\/\/www.seiken.co.jp\/english\/wp\/wp-content\/themes\/wp-seiken-en\/assets\/images\/products\/probe\/double_ended\/structure_img01.jpg\" alt=\"The Structure of Double-Ended Probes\"><br \/>\n        <\/figure>\n<\/p><\/div>\n<div class=\"column2\">\n<div class=\"txt_wrap\">\n<p>Differing from single-ended probes that require a socket (receptacle), double-ended probes are fixed<br \/>\n            directly into a board (holder), allowing them to support narrow pitches below 0.45mm\u2014a task difficult for<br \/>\n            traditional probe systems.<br \/>\n            <br \/>One end of the probe can connect to a relay board electrode, or even directly to a metal terminal with<br \/>\n            enameled or lead wire, offering multiple wiring options to suit your design needs.\n          <\/p>\n<\/p><\/div>\n<figure>\n          <img decoding=\"async\" src=\"https:\/\/www.seiken.co.jp\/english\/wp\/wp-content\/themes\/wp-seiken-en\/assets\/images\/products\/probe\/double_ended\/structure_img02.jpg\" alt=\"The Structure of Double-Ended Probes\"><br \/>\n        <\/figure>\n<\/p><\/div>\n<\/section>\n<section id=\"type\" class=\"container\">\n<h2>Types of Double-Ended Probes<\/h2>\n<p>We offer two main configurations based on your testing setup: <br \/>From long and thick probes (20mm length, \u03c61.0mm) to ultra-compact and fine (as small as 1.5mm in length and \u03c60.1mm in diameter), we offer an extensive selection.<br \/>Tip shapes can also be selected to match your test<br \/>\n        conditions, although smaller diameters may limit tip shape options.<\/p>\n<div class=\"column2\">\n<div class=\"box -border--thin\">\n<div class=\"txt_wrap\">\n<h3>Single-Action Type<\/h3>\n<p>One plunger is fixed (clipped), while the other moves. Ideal for shorter probes.<\/p>\n<\/p><\/div>\n<figure><img decoding=\"async\" src=\"https:\/\/www.seiken.co.jp\/english\/wp\/wp-content\/themes\/wp-seiken-en\/assets\/images\/products\/probe\/double_ended\/type_img01.jpg\" alt=\"\"><\/figure>\n<\/p><\/div>\n<div class=\"box -border--thin\">\n<div class=\"txt_wrap\">\n<h3>Dual-Action Type<\/h3>\n<p>Both plungers move and compress under load.<\/p>\n<\/p><\/div>\n<figure><img decoding=\"async\" src=\"https:\/\/www.seiken.co.jp\/english\/wp\/wp-content\/themes\/wp-seiken-en\/assets\/images\/products\/probe\/double_ended\/type_img02.jpg\" alt=\"\n\"><\/figure>\n<\/p><\/div>\n<\/p><\/div>\n<h3>Wiring Types Comparison<\/h3>\n<p>Double-ended probes are typically installed between two resin boards, creating a probe head assembly. Both dual-action and single-action configurations are available depending on your setup. For wiring, we support two main methods:<\/p>\n<table class=\"table -sp_vertical\">\n<thead>\n<tr>\n<th><\/th>\n<th>Relay Board Type<\/th>\n<th>Lead Wire Type<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>Initial Cost<\/th>\n<td>\n<p>\u00d7<br \/>(Requires PCB design &#038; setup)<\/p>\n<\/td>\n<td>\n<p>\u2713<br \/>(Wiring only)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<th>Repeat order<\/th>\n<td>\n<p>\u2713\u2713<br \/>(Cost-effective at higher volumes)<\/p>\n<\/td>\n<td>\n<p>?<br \/>(Same cost each time)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<th>Electrical Characteristics<\/th>\n<td>\n<p>\u2713\u2713<br \/> (Excellent for high-frequency and resistance testing)<\/p>\n<\/td>\n<td>\n<p>?<br \/>(May show higher resistance due to <br class=\"-pc\">wire length and contact points)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<th>Other Characteristics<\/th>\n<td class=\"-left\">\n<p>Shorter setup time; ideal for large-scale testing; <br class=\"-pc\">compact jig height<\/p>\n<\/td>\n<td class=\"-left\">\n<p>Better for low-pin count or evaluation tests<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Need help choosing the right wiring method? We can provide suggestions tailored to your test requirements.<br \/>\n        <br \/>For example, start with a lead wire prototype for evaluation, then switch to a relay board for mass production.<\/p>\n<ul class=\"list -note\">\n<li>Initial setup costs for relay boards include PCB design, gerber format file creation, and stencil manufacturing. We offer full in-house support from design to fabrication and assembly.<\/li>\n<\/ul>\n<\/section>\n<section id=\"usage\" class=\"container\">\n<h2>How to Make the Most of Your Double-Ended Probes<\/h2>\n<p>Normally, contact probes are inserted into probe holders.<br \/>Only the worn-out probes need replacement, making<br \/>\n        maintenance easier and more cost-effective.<\/p>\n<div class=\"btn_wrap\">\n        <a href=\"..\/usage_guide\/#double_ended\" class=\"btn\">View Details<\/a>\n      <\/div>\n<\/section>\n<section id=\"order\" class=\"container\">\n<h2>Build Your Ideal Double-Ended Probe<\/h2>\n<p>Due to the highly customized nature of double-ended probes, we offer a limited standard lineup. However, we can<br \/>\n        design solutions based on similar models or design entirely new ones to meet your specific needs.<br \/>\n        <br \/>Let us know your desired specifications\u2014pitch, overall length, contact force, tip shape, and more\u2014and we\u2019ll<br \/>\n        provide a tailored solution.\n      <\/p>\n<div class=\"btn_wrap\">\n        <a href=\"..\/..\/..\/contact_us\/\" class=\"btn -contact\">Contact<\/a>\n      <\/div>\n<\/section>\n<section id=\"jig\" class=\"container\">\n<h2>Fixture Manufacturing<\/h2>\n<p>At Seiken, we go beyond just providing probes. We offer one-stop service, including material processing and machining, fixture assembly, and wiring.<br \/>Need only the holder? We can help you too. Feel free to contact us\u2014we\u2019re here to support you from design to manufacture.<\/p>\n<div class=\"link_wrap\">\n        <a href=\"..\/..\/test_fixtures\/probe_holder\/\" class=\"link\"><span>Probe Holders (Custom Test Fixtures)<\/span><\/a><br \/>\n        <a href=\"..\/..\/precision_machining\/\" class=\"link\"><span>Resin Processing<\/span><\/a>\n      <\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Structure Types Details Orders Fixture Manufacturing The Structure of Double-Ended Probes Unlike conventional  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":39,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-products-child.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-101","page","type-page","status-publish","hentry"],"aioseo_notices":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.seiken.co.jp\/english\/wp-json\/wp\/v2\/pages\/101","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.seiken.co.jp\/english\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.seiken.co.jp\/english\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.seiken.co.jp\/english\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.seiken.co.jp\/english\/wp-json\/wp\/v2\/comments?post=101"}],"version-history":[{"count":0,"href":"https:\/\/www.seiken.co.jp\/english\/wp-json\/wp\/v2\/pages\/101\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.seiken.co.jp\/english\/wp-json\/wp\/v2\/pages\/39"}],"wp:attachment":[{"href":"https:\/\/www.seiken.co.jp\/english\/wp-json\/wp\/v2\/media?parent=101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}