{"id":9594,"date":"2026-07-04T04:22:32","date_gmt":"2026-07-04T04:22:32","guid":{"rendered":"https:\/\/materialparts.com\/mec8-125-02-l-d-ra1\/"},"modified":"2026-07-04T04:22:32","modified_gmt":"2026-07-04T04:22:32","slug":"mec8-125-02-l-d-ra1","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mec8-125-02-l-d-ra1\/","title":{"rendered":"MEC8-125-02-L-D-RA1"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The MEC8-125-02-L-D-RA1 is a Samtec 0.80 mm pitch mini edge card connector in a right-angle surface-mount configuration. With 50 positions (25 per row) in a dual-row layout, it accepts 1.6 mm thick daughter cards and supports up to 14 Gbps NRZ data rates for high-speed board-to-board interconnect.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Pitch<\/td>\n0.80 mm (0.0315″)<\/td>\n<\/tr>\n
Number of Positions<\/td>\n50 (dual row, 25 per row)<\/td>\n<\/tr>\n
Card Thickness<\/td>\n1.6 mm (0.062″)<\/td>\n<\/tr>\n
Current Rating<\/td>\n2.3A per contact<\/td>\n<\/tr>\n
Voltage Rating<\/td>\n180 VAC \/ 255 VDC<\/td>\n<\/tr>\n
Contact Resistance<\/td>\n15 mΩ max<\/td>\n<\/tr>\n
Insulation Resistance<\/td>\n1000 MΩ min<\/td>\n<\/tr>\n
Mating Cycles<\/td>\n100<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55°C to +125°C<\/td>\n<\/tr>\n
Mounting<\/td>\nSMD Right Angle<\/td>\n<\/tr>\n
Insulation Material<\/td>\nLCP (Liquid Crystal Polymer)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 0.80 mm fine pitch mini edge card design for high-density board-to-board connections<\/li>\n
  • Right-angle SMD mounting for low-profile daughter card insertion perpendicular to PCB<\/li>\n
  • 14 Gbps NRZ channel performance metric (CPM) for high-speed protocols<\/li>\n
  • Gold-plated phosphor bronze contacts (10 µin gold) for reliable signal integrity<\/li>\n
  • Board guide feature for blind mating alignment<\/li>\n
  • Optional tape and reel packaging for automated assembly<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • High-speed daughter card mezzanine connector in embedded computing<\/li>\n
    • SSD add-in card edge connector for storage systems<\/li>\n
    • Test and measurement instrument modular expansion slot<\/li>\n
    • Networking equipment line card edge connector<\/li>\n
    • Industrial vision system camera module interface<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MEC8-125-02-L-D-RA1 is a Samtec 0.80 mm pitch mini edge card connector in a right-angle surface-mount configuration. With 50 positions (25 per row) in a dual-row layout, it accepts 1.6 mm thick daughter cards and supports up to 14 Gbps NRZ data rates for high-speed board-to-board interconnect. Key Specifications Pitch 0.80 mm (0.0315″) […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[66],"tags":[842],"chip_brand":[841],"class_list":["post-9594","post","type-post","status-publish","format-standard","hentry","category-connectors-interconnect-devices","tag-mec8-125-02-l-d-ra1","chip_brand-samtec"],"acf":{"brief_explanation":"0.80mm pitch 50-pos dual-row mini edge card connector, right-angle SMD, 2.3A, 14Gbps, for board-to-board","date_code":"","package_case":"SMD Right Angle (26.2 x 9.1 x 5.77 mm)","in_stock":13398,"datasheet":"https:\/\/www.samtec.com\/partnumber\/mec8-125-02-l-d-ra1","price":"$4.70 @ 450+","product_introduction":"The MEC8-125-02-L-D-RA1 is a Samtec MEC8-RA series 0.80 mm pitch mini edge card connector featuring 50 positions in a dual-row configuration with right-angle surface-mount termination. Designed to accept 1.6 mm thick daughter cards, the connector supports up to 14 Gbps NRZ data rates with gold-plated phosphor bronze cantilever bellows contacts. The LCP (liquid crystal polymer) insulator provides excellent dimensional stability and high-temperature resistance for lead-free reflow compatibility. Board guide features facilitate blind mating in high-density embedded computing, networking, and test equipment applications.","working_principle":"The MEC8-125-02-L-D-RA1 provides a board-to-board interconnect through edge card insertion. The daughter card (1.6 mm thick) slides into the connector slot, where cantilever bellows contacts deflect against the card edge pads, creating a gas-tight connection with 15 m\u03a9 maximum contact resistance. The right-angle orientation allows the daughter card to mount perpendicular to the main PCB, creating a mezzanine or expansion card configuration. The 0.80 mm pitch and controlled-impedance contact geometry maintain signal integrity for high-speed differential pair routing at data rates up to 14 Gbps NRZ.","pin_description":"
      Pin Group<\/th>Function<\/th><\/tr>
      Row A (25 pins)<\/td>Signal and power contacts — side A of daughter card<\/td><\/tr>
      Row B (25 pins)<\/td>Signal and power contacts — side B of daughter card<\/td><\/tr>
      Board Guide<\/td>Mechanical alignment feature for blind mating<\/td><\/tr>
      SMT Tail Array<\/td>50 solder tails for PCB surface-mount attachment<\/td><\/tr><\/table>","application_scenarios":"
      • Embedded computing module mezzanine connector for CPU\/FPGA daughter card<\/li>
      • SSD carrier card edge connector in enterprise storage systems<\/li>
      • Modular test instrument plug-in card interface<\/li>
      • 5G baseband unit expansion slot edge card connector<\/li>
      • Industrial camera sensor module edge card interface<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        MEC8-125-02-L-D-RA1-TR<\/td>Samtec<\/td>Tape and reel packaging variant<\/td><\/tr>
        MEC8-125-02-L-D-V<\/td>Samtec<\/td>Vertical (straight) mount variant<\/td><\/tr>
        MEC8-125-01-L-D-RA1<\/td>Samtec<\/td>Single-row (25-pin) variant<\/td><\/tr>
        MEC6-125-02-L-D-RA1<\/td>Samtec<\/td>0.635mm pitch variant<\/td><\/tr>
        MEC8-125-02-L-D-RA2<\/td>Samtec<\/td>Different tail length variant<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9594","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=9594"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9594\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9594"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}