{"id":10268,"date":"2026-07-09T10:06:08","date_gmt":"2026-07-09T10:06:08","guid":{"rendered":"https:\/\/materialparts.com\/b4b-ph-sm4-tbtlfsn\/"},"modified":"2026-07-09T10:06:08","modified_gmt":"2026-07-09T10:06:08","slug":"b4b-ph-sm4-tbtlfsn","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/b4b-ph-sm4-tbtlfsn\/","title":{"rendered":"B4B-PH-SM4-TBT(LF)(SN)"},"content":{"rendered":"

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

The B4B-PH-SM4-TBT(LF)(SN) from JST is a 4-position 2.0mm pitch PH series Shrouded Header, designed for Side-Entry (Right-Angle) surface-mount applications. Rated at 2A and 100V AC\/DC, this connector provides reliable wire-to-board connectivity in a compact form factor.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u5236\u9020\u5546<\/td>\nJST<\/td>\n<\/tr>\n
Series<\/td>\nPH<\/td>\n<\/tr>\n
Pitch<\/td>\n2.0 mm<\/td>\n<\/tr>\n
Number of Positions<\/td>\n4<\/td>\n<\/tr>\n
\u5b89\u88c5\u7c7b\u578b<\/td>\nSMT (SM4)<\/td>\n<\/tr>\n
Orientation<\/td>\nSide-Entry (Right-Angle)<\/td>\n<\/tr>\n
Current Rating<\/td>\n2A<\/td>\n<\/tr>\n
Voltage Rating<\/td>\n100V AC\/DC<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-25\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
Contact Material<\/td>\nCopper Alloy \/ Phosphor Bronze<\/td>\n<\/tr>\n
Contact Plating<\/td>\nTin (Sn)<\/td>\n<\/tr>\n
Insulation Material<\/td>\nNylon (PA) \/ PBT, UL94V-0<\/td>\n<\/tr>\n
RoHS Compliant<\/td>\nYes<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 2.0mm pitch disconnectable crimp-style connector<\/li>\n
  • SM4 SMT design with 4-pad footprint<\/li>\n
  • Side-entry (right-angle) configuration<\/li>\n
  • 4-position single-row layout<\/li>\n
  • Fully shrouded header for contact protection<\/li>\n
  • Tin-plated phosphor bronze contacts<\/li>\n
  • Lead-free compliant<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Motor drive signal connections<\/li>\n
    • LED lighting control wiring<\/li>\n
    • Home appliance control boards<\/li>\n
    • Audio equipment internal connections<\/li>\n
    • CNC controller interfaces<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The B4B-PH-SM4-TBT(LF)(SN) from JST is a 4-position 2.0mm pitch PH series Shrouded Header, designed for Side-Entry (Right-Angle) surface-mount applications. Rated at 2A and 100V AC\/DC, this connector provides reliable wire-to-board connectivity in a compact form factor. Key Specifications Manufacturer JST Series PH Pitch 2.0 mm Number of Positions 4 Mounting Type SMT (SM4) […]<\/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":[1514],"chip_brand":[243],"class_list":["post-10268","post","type-post","status-publish","format-standard","hentry","category-connectors-interconnect-devices","tag-b4b-ph-sm4-tbtlfsn","chip_brand-jst"],"acf":{"brief_explanation":"JST PH Series 2.0mm pitch, 4-circuit SMT side-entry shrouded header (SM4 type), 2A, 100V, tin-plated, lead-free","date_code":"","package_case":"SMT Header, SM4 (2.0mm pitch, 4 pos, side-entry)","in_stock":2409,"datasheet":"https:\/\/www.jst-mfg.com\/product\/pdf\/eng\/ePH.pdf","price":"","product_introduction":"The B4B-PH-SM4-TBT(LF)(SN) is a 4-position 2.0mm pitch surface-mount side-entry shrouded header from JST's PH connector series with SM4 4-pad footprint design. This connector provides four circuits for power and signal connections in a compact single-row layout. The SM4 footprint provides enhanced mechanical stability with additional solder pads, making it suitable for applications subject to vibration or cable pull forces. The side-entry orientation enables low-profile cable routing parallel to the PCB, and the 2A\/100V rating supports a wide range of signal and low-power applications.","working_principle":"The B4B-PH-SM4-TBT(LF)(SN) functions identically to other PH series SM4 headers but with four contact positions. The header accepts the PHR-4 wire housing with crimped SPH contacts. The 4-pad SMT footprint provides two additional mechanical solder pads compared to the standard 2-pad design, increasing the peel strength of the solder joints by approximately 50%. This is particularly important in side-entry configurations where cable insertion and extraction forces apply a moment load to the header-PCB interface. The phosphor bronze contacts with tin plating ensure reliable mating with initial contact resistance below 10m\u03a9.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Circuit 1<\/td>Signal\/Power<\/td>First contact position<\/td><\/tr>
      2<\/td>Circuit 2<\/td>Signal\/Power<\/td>Second contact position<\/td><\/tr>
      3<\/td>Circuit 3<\/td>Signal\/Power<\/td>Third contact position<\/td><\/tr>
      4<\/td>Circuit 4<\/td>Signal\/Power<\/td>Fourth contact position<\/td><\/tr><\/table>","application_scenarios":"
      • Motor Control:<\/strong> Signal connections for stepper and servo motor drivers where 4 circuits cover step, direction, enable, and fault signals.<\/li>
      • LED Lighting:<\/strong> PWM control and power connections for LED driver modules with 2A per circuit handling typical LED drive currents.<\/li>
      • Home Appliances:<\/strong> Control panel to main board connections in washers, dryers, and HVAC equipment.<\/li>
      • Audio Equipment:<\/strong> Internal signal routing for amplifiers and mixers with PH series reliability and compact footprint.<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Pitch<\/th>Circuits<\/th>Notes<\/th><\/tr>
        JST<\/td>S4B-PH-K-S(LF)(SN)<\/td>2.0mm<\/td>4<\/td>Through-hole top-entry variant<\/td><\/tr>
        JST<\/td>B3B-PH-SM4-TBT(LF)(SN)<\/td>2.0mm<\/td>3<\/td>3-circuit version<\/td><\/tr>
        JST<\/td>B5B-PH-SM4-TBT(LF)(SN)<\/td>2.0mm<\/td>5<\/td>5-circuit version<\/td><\/tr>
        Molex<\/td>53047-0410<\/td>2.0mm<\/td>4<\/td>KK alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/10268","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=10268"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/10268\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=10268"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=10268"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=10268"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}