{"id":3342,"date":"2026-06-01T01:58:39","date_gmt":"2026-06-01T01:58:39","guid":{"rendered":"https:\/\/materialparts.com\/hsmp-3812-tr\/"},"modified":"2026-06-01T01:58:39","modified_gmt":"2026-06-01T01:58:39","slug":"hsmp-3812-tr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/hsmp-3812-tr\/","title":{"rendered":"HSMP-3812-TR"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The HSMP-3812-TR from Broadcom (formerly Avago\/Agilent) is a dual-series connected silicon Schottky diode in a SOT-23-3 surface-mount package. Designed for RF and microwave applications up to several GHz, it features low series resistance and capacitance for use as a limiter, attenuator, or switch in receiver protection circuits.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u062a\u0643\u0648\u064a\u0646<\/td>\nDual Series-Connected Schottky<\/td>\n<\/tr>\n
Reverse Voltage<\/td>\n15V<\/td>\n<\/tr>\n
Forward Current<\/td>\n50mA<\/td>\n<\/tr>\n
Forward Voltage<\/td>\n0.4V typical @ 1mA<\/td>\n<\/tr>\n
Reverse Capacitance<\/td>\n0.4pF typical @ -2V<\/td>\n<\/tr>\n
Series Resistance<\/td>\n6 Ohm typical<\/td>\n<\/tr>\n
Frequency Range<\/td>\nDC to several GHz<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55 to 150 C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-23-3 (SC-59)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Dual series-connected Schottky diode pair<\/li>\n
  • Low capacitance: 0.4pF at -2V<\/li>\n
  • Low series resistance: 6 Ohm typical<\/li>\n
  • High-frequency performance to GHz range<\/li>\n
  • \u0639\u0628\u0648\u0629 SOT-23-3 \u0645\u062f\u0645\u062c\u0629 \u0630\u0627\u062a \u062a\u0631\u0643\u064a\u0628 \u0633\u0637\u062d\u064a \u0645\u062f\u0645\u062c\u0629 SOT-23-3<\/li>\n
  • Receiver protection and limiting<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • RF receiver front-end protection<\/li>\n
    • Power limiter circuits<\/li>\n
    • RF attenuator and switch<\/li>\n
    • Microwave signal routing<\/li>\n
    • Transmit\/receive switch in radios<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The HSMP-3812-TR from Broadcom (formerly Avago\/Agilent) is a dual-series connected silicon Schottky diode in a SOT-23-3 surface-mount package. Designed for RF and microwave applications up to several GHz, it features low series resistance and capacitance for use as a limiter, attenuator, or switch in receiver protection circuits. Key Specifications Configuration Dual Series-Connected Schottky […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,56],"tags":[],"chip_brand":[198],"class_list":["post-3342","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-mosfets","chip_brand-broadcom"],"acf":{"brief_explanation":"Dual series Schottky diode, 15V, 0.4pF, RF limiter\/switch, SOT-23-3","date_code":"","package_case":"SOT-23-3 \/ SC-59 (2.9 x 1.3 x 1.0 mm)","in_stock":6800,"datasheet":"https:\/\/www.broadcom.com\/products\/wireless\/rf-diodes\/hsmp-3812","price":"$0.42 @ 1ku","product_introduction":"The HSMP-3812-TR from Broadcom is a dual series-connected silicon Schottky diode pair in SOT-23-3 for RF\/microwave applications. Low 0.4pF capacitance at -2V and 6 Ohm series resistance enable high-frequency operation. The series-connected topology provides improved isolation for limiter, attenuator, and receiver protection circuits up to several GHz.","working_principle":"Two Schottky diodes are connected in series (anode-to-cathode chain). At low RF power, the diodes are reverse-biased (or zero-biased), presenting high impedance and low capacitance (0.4pF), allowing small signals to pass with minimal attenuation. At high RF power, the diodes forward-bias, presenting low impedance that shunts the excess power away from sensitive receiver components. The series connection provides better isolation than a single diode limiter.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Cathode<\/td>Cathode<\/td>First diode cathode (RF input)<\/td><\/tr>
      2<\/td>Anode<\/td>Anode<\/td>Second diode anode (RF output)<\/td><\/tr>
      3<\/td>Common<\/td>Junction<\/td>Internal node (first anode\/second cathode)<\/td><\/tr><\/table>","application_scenarios":"
      • RF receiver front-end limiter protecting LNA from high-power signals<\/li>
      • Microwave T\/R switch in half-duplex radios<\/li>
      • Variable RF attenuator with DC bias control<\/li>
      • Antenna coupler protection<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Broadcom<\/td>HSMP-3810-TR<\/td>SOT-23-3<\/td>Single diode version<\/td><\/tr>
        MACOM<\/td>MA4P1200-1071T<\/td>SOT-23-3<\/td>Si PIN diode limiter<\/td><\/tr>
        Broadcom<\/td>HSMP-3822-TR<\/td>SOT-23-3<\/td>Dual series, lower capacitance<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3342","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=3342"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3342\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3342"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3342"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3342"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3342"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}