{"id":10438,"date":"2026-07-19T13:49:13","date_gmt":"2026-07-19T13:49:13","guid":{"rendered":"https:\/\/materialparts.com\/43045-0414\/"},"modified":"2026-07-19T13:49:13","modified_gmt":"2026-07-19T13:49:13","slug":"43045-0414","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/43045-0414\/","title":{"rendered":"43045-0414"},"content":{"rendered":"

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

The 43045-0414 is a 4-circuit dual-row PCB header from Molex’s Micro-Fit 3.0 series. With a 3.0mm pitch, tin-plated brass contacts, and through-hole mounting with PCB polarizing pegs, this fully shrouded power header delivers up to 8.5A per contact for compact wire-to-board power distribution in industrial, consumer, and medical applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Series<\/td>\nMicro-Fit 3.0 (43045)<\/td>\n<\/tr>\n
Number of Contacts<\/td>\n4<\/td>\n<\/tr>\n
Pitch<\/td>\n3.0 mm<\/td>\n<\/tr>\n
Number of Rows<\/td>\n2<\/td>\n<\/tr>\n
Row Spacing<\/td>\n3.0 mm<\/td>\n<\/tr>\n
Orientation<\/td>\nVertical (Straight)<\/td>\n<\/tr>\n
Shrouding<\/td>\nFully Shrouded<\/td>\n<\/tr>\n
Current Rating<\/td>\n5A typical, 8.5A max per contact<\/td>\n<\/tr>\n
Voltage Rating<\/td>\n600V max<\/td>\n<\/tr>\n
Contact Material<\/td>\nBrass<\/td>\n<\/tr>\n
Contact Plating<\/td>\nTin<\/td>\n<\/tr>\n
Housing Material<\/td>\nHigh Temperature Thermoplastic LCP<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +105\u00b0C<\/td>\n<\/tr>\n
Mounting<\/td>\nThrough Hole (with PCB Pegs)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 4-circuit dual-row design for compact power routing<\/li>\n
  • Fully shrouded housing for contact protection<\/li>\n
  • PCB polarizing pegs for correct assembly orientation<\/li>\n
  • Positive locking ramp prevents accidental disconnection<\/li>\n
  • Kinked solder pins for additional PCB retention<\/li>\n
  • High-temperature LCP housing for lead-free reflow compatibility<\/li>\n
  • Glow-wire compliant for IEC 60335-1 applications<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Consumer appliance fan and motor power connections<\/li>\n
    • Industrial sensor and actuator power interfaces<\/li>\n
    • Medical device internal power wiring<\/li>\n
    • Telecom equipment power distribution<\/li>\n
    • Solar inverter sub-assembly connections<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The 43045-0414 is a 4-circuit dual-row PCB header from Molex’s Micro-Fit 3.0 series. With a 3.0mm pitch, tin-plated brass contacts, and through-hole mounting with PCB polarizing pegs, this fully shrouded power header delivers up to 8.5A per contact for compact wire-to-board power distribution in industrial, consumer, and medical applications. Key Specifications Series Micro-Fit […]<\/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":[13,20],"tags":[1742],"chip_brand":[256],"class_list":["post-10438","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","tag-43045-0414","chip_brand-molex"],"acf":{"brief_explanation":"Molex Micro-Fit 3.0 header, 4 circuits, 3.0mm pitch, dual row, vertical, tin, TH","date_code":"","package_case":"Through Hole, Vertical, 3.0mm pitch, dual row","in_stock":8637,"datasheet":"https:\/\/www.molex.com\/en-us\/products\/connectors\/power-connectors\/micro-fit-3","price":"$0.95 @ 1ku","product_introduction":"The Molex 43045-0414 is a 4-circuit dual-row vertical PCB header from the Micro-Fit 3.0 connector system. Providing up to 8.5A per contact with 600V rating in a compact 3.0mm pitch format, this header is ideal for wire-to-board power distribution in applications requiring a small number of high-current circuits. The fully shrouded housing, kinked solder pins, and PCB polarizing pegs ensure reliable assembly and operation.","working_principle":"The 43045-0414 uses the standard Micro-Fit 3.0 contact system with fully isolated dual-beam terminals providing four points of contact per mating interface. The positive locking ramp engages the mating receptacle housing to prevent accidental disconnection. The kinked through-hole solder pins provide mechanical retention during wave soldering, while the LCP housing tolerates lead-free IR reflow temperatures up to 265\u00b0C.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Contact 1<\/td>Power\/Signal<\/td>Row A, Circuit 1<\/td><\/tr>
      2<\/td>Contact 2<\/td>Power\/Signal<\/td>Row A, Circuit 2<\/td><\/tr>
      3<\/td>Contact 3<\/td>Power\/Signal<\/td>Row B, Circuit 1<\/td><\/tr>
      4<\/td>Contact 4<\/td>Power\/Signal<\/td>Row B, Circuit 2<\/td><\/tr>
      \u2014<\/td>PCB Pegs<\/td>Mechanical<\/td>Polarization and board alignment<\/td><\/tr><\/table>","application_scenarios":"
      • Fan motor 2-phase power connections in appliances<\/li>
      • Dual-channel sensor power and signal header in industrial controls<\/li>
      • Small form factor medical device internal power routing<\/li>
      • Telecom line card power input header<\/li>
      • Solar micro-inverter dual-string connection<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Molex<\/td>43045-0412<\/td>3.0mm, TH<\/td>Tin-plated variant<\/td><\/tr>
        Molex<\/td>43045-0424<\/td>3.0mm, RA<\/td>Right angle variant<\/td><\/tr>
        Molex<\/td>43045-0416<\/td>3.0mm, TH<\/td>Gold-plated variant<\/td><\/tr>
        TE Connectivity<\/td>1-770966-4<\/td>3.0mm<\/td>Comparable Micro-Fit header<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/10438","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=10438"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/10438\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=10438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=10438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=10438"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}