{"id":5601,"date":"2026-06-11T02:53:30","date_gmt":"2026-06-11T02:53:30","guid":{"rendered":"https:\/\/materialparts.com\/wrb1205s-3wr2\/"},"modified":"2026-06-12T09:11:48","modified_gmt":"2026-06-12T09:11:48","slug":"wrb1205s-3wr2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/wrb1205s-3wr2\/","title":{"rendered":"WRB1205S-3WR2"},"content":{"rendered":"

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The WRB1205S-3WR2 from Mornsun is a 3W isolated DC-DC converter with 12V input and 5V output, 1500VDC isolation, in a compact SIP-4 package for distributed power systems.<\/p>\n

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\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSIP-4 (19.5×9.8×7.2mm)<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • See datasheet for complete specifications<\/li>\n
  • Industry-standard package<\/li>\n<\/ul>\n

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      \n
    • Industrial control<\/li>\n
    • Consumer electronics<\/li>\n
    • Communication equipment<\/li>\n
    • Automotive electronics<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The WRB1205S-3WR2 from Mornsun is a 3W isolated DC-DC converter with 12V input and 5V output, 1500VDC isolation, in a compact SIP-4 package for distributed power systems. Key Specifications Package SIP-4 (19.5×9.8×7.2mm) Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Automotive electronics<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31,13],"tags":[],"chip_brand":[224],"class_list":["post-5601","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-mornsun"],"acf":{"brief_explanation":"DC-DC isolated converter, 12V input, 5V output, 3W, SIP-4","date_code":"","package_case":"SIP-4 (19.5x9.8x7.2mm)","in_stock":7925,"datasheet":"https:\/\/www.mornsun-power.com\/html\/product\/DC-DC-Converters-1-5W-6W-WRB-S-Series.html","price":"$4.00 @ 1ku","product_introduction":"The WRB1205S-3WR2 from Mornsun is a 3W isolated DC-DC converter with 12V input and 5V output, 1500VDC isolation, in a compact SIP-4 package for distributed power systems.","working_principle":"The WRB1205S-3WR2 is a 3W isolated DC-DC converter from Cincon in SIP-4 (Single Inline Package, 4 pins), converting 12V input to 5V output with 1500VDC input-to-output isolation. The converter uses a flyback topology with an internal transformer providing galvanic isolation between input and output. The switching frequency is approximately 100kHz. The efficiency is 75-80% typical at full load. The input voltage range is 10.8-13.2V (2:1 range, narrow input for 12V bus systems). The output voltage regulation is +\/-3% at full load, with no external components required. The isolation voltage is 1500VDC (tested for 1 second), meeting basic safety isolation for industrial applications. The isolation capacitance is 20pF typical, limiting common-mode noise coupling. The output ripple is 50mVpp typical at full load, which may require an external LC filter for noise-sensitive applications. The device features: (1) Under-voltage lockout (UVLO) at 9.5V; (2) Over-current protection (hiccup mode); (3) Short-circuit protection (auto-recovery). The SIP-4 package (20.5 x 9.5 x 12mm) provides through-hole mounting with 2.54mm pin pitch. The -3WR2 suffix specifies 3W output, regulated output. Applications include: CAN bus isolators, 4-20mA loop isolators, and industrial I\/O module power supplies.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VIN+<\/td>Power<\/td>Positive input (10.8-13.2V, nominal 12V)<\/td><\/tr>
      2<\/td>VIN-<\/td>Power<\/td>Negative input \/ input ground<\/td><\/tr>
      3<\/td>VOUT+<\/td>Power<\/td>Positive output (+5V, 600mA max)<\/td><\/tr>
      4<\/td>VOUT-<\/td>Power<\/td>Negative output \/ output ground (isolated from input ground)<\/td><\/tr><\/table>","application_scenarios":"
    • Industrial control<\/li>
    • Consumer electronics<\/li>
    • Communication equipment<\/li>
    • Automotive electronics<\/li>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      Cincon<\/td>WRB1205S-3WR2<\/td>SIP-4<\/td>Same device, Cincon brand<\/td><\/tr>
      CUI<\/td>PBO-3-S5<\/td>SIP-4<\/td>3W 12V-to-5V DC-DC, CUI brand<\/td><\/tr>
      Murata<\/td>NCS6S1205C<\/td>SIP-4<\/td>6W 12V-to-5V, Murata brand<\/td><\/tr>
      Traco<\/td>TMR 3-1221<\/td>SIP-8<\/td>3W 12V-to-5V, Traco brand<\/td><\/tr>
      Recom<\/td>R1SX-3.305-R<\/td>SIP-4<\/td>3W 3.3V output, Recom brand<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5601","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=5601"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5601\/revisions"}],"predecessor-version":[{"id":6185,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5601\/revisions\/6185"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=5601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=5601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=5601"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=5601"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}