{"id":10482,"date":"2026-07-20T04:20:08","date_gmt":"2026-07-20T04:20:08","guid":{"rendered":"https:\/\/ic-vendor.com\/1smb5929bt3g\/"},"modified":"2026-07-20T04:20:08","modified_gmt":"2026-07-20T04:20:08","slug":"1smb5929bt3g","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/1smb5929bt3g\/","title":{"rendered":"1SMB5929BT3G"},"content":{"rendered":"

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

The onsemi 1SMB5929BT3G is a 500 mW Zener voltage regulator diode housed in an SMB (DO-214AA) surface-mount package. It provides a nominal Zener voltage of 15 V with a \u00b15% tolerance, designed for voltage regulation and protection in compact electronic 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
Zener Voltage (VZ)<\/td>\n15 V (Nominal)<\/td>\n<\/tr>\n
Tolerance<\/td>\n\u00b15%<\/td>\n<\/tr>\n
\u062a\u0628\u062f\u064a\u062f \u0627\u0644\u0637\u0627\u0642\u0629 (\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u0642\u0635\u0649)<\/td>\n500 mW<\/td>\n<\/tr>\n
Test Current (IZT)<\/td>\n16.5 mA<\/td>\n<\/tr>\n
Zener Impedance (ZZT)<\/td>\n14 \u03a9 (Typ)<\/td>\n<\/tr>\n
Reverse Leakage Current<\/td>\n0.1 \u00b5A @ 11 V<\/td>\n<\/tr>\n
Forward Voltage (VF)<\/td>\n1.1 V @ 200 mA<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55\u00b0C to +150\u00b0C (TJ)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSMB (DO-214AA)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 500 mW steady-state power dissipation rating<\/li>\n
  • Nominal Zener voltage of 15 V with \u00b15% tolerance<\/li>\n
  • Compact SMB surface-mount package for high-density boards<\/li>\n
  • Wide operating temperature range from -55\u00b0C to +150\u00b0C<\/li>\n
  • Pb-Free and RoHS compliant<\/li>\n
  • Suitable for voltage regulation and transient suppression<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Voltage regulation in power supply circuits<\/li>\n
    • Overvoltage protection for sensitive components<\/li>\n
    • Reference voltage generation<\/li>\n
    • Clipping and clamping circuits<\/li>\n
    • Automotive and industrial electronics protection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The onsemi 1SMB5929BT3G is a 500 mW Zener voltage regulator diode housed in an SMB (DO-214AA) surface-mount package. It provides a nominal Zener voltage of 15 V with a \u00b15% tolerance, designed for voltage regulation and protection in compact electronic circuits. Key Specifications Zener Voltage (VZ) 15 V (Nominal) Tolerance \u00b15% Power Dissipation […]<\/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":[57,13],"tags":[1787],"chip_brand":[144],"class_list":["post-10482","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","tag-1smb5929bt3g","chip_brand-on"],"acf":{"brief_explanation":"Zener diode, 15V, 500mW, \u00b15%, SMB (DO-214AA), IZT 16.5mA","date_code":"","package_case":"SMB (DO-214AA) 5.6 x 3.6 x 2.2 mm","in_stock":9734,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/1SMB5913BT3-D.PDF","price":"$0.039 @ 3ku","product_introduction":"The onsemi 1SMB5929BT3G is a 15 V Zener voltage regulator diode in an SMB surface-mount package, part of the 1SMB59xxB series. It is designed to provide stable voltage regulation and protection in compact electronic systems. With a 500 mW power dissipation rating and \u00b15% voltage tolerance, this device is suitable for both regulation and transient suppression applications. The SMB package offers a smaller footprint than traditional SMA packages while maintaining robust power handling. The diode operates over a wide temperature range from -55\u00b0C to +150\u00b0C and is Pb-Free and RoHS compliant.","working_principle":"The 1SMB5929BT3G operates in the reverse breakdown region of its PN junction. When the reverse voltage exceeds the Zener breakdown voltage (15 V nominal), the diode conducts current while maintaining a relatively constant voltage across its terminals. The Zener impedance of 14 \u03a9 (typical) represents the small-signal resistance in the breakdown region, indicating how much the voltage varies with current changes. In the forward direction, it behaves as a standard silicon diode with a forward voltage of approximately 1.1 V at 200 mA. The device dissipates power as heat (P = VZ \u00d7 IZ), limited to 500 mW at 25\u00b0C with derating above this temperature.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>Cathode<\/td>Terminal<\/td>Marked by band \u2014 connect to higher voltage for Zener operation<\/td><\/tr>\n
      2<\/td>Anode<\/td>Terminal<\/td>Connect to lower voltage or ground for Zener operation<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Voltage regulation in low-power DC supply rails<\/li>\n
      • Overvoltage protection for IC inputs and outputs<\/li>\n
      • Reference voltage generation in comparator circuits<\/li>\n
      • Signal clipping and clamping in analog front-ends<\/li>\n
      • Automotive electronics surge protection<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        Vishay<\/td>SMBJ15A<\/td>SMB<\/td>TVS variant, 15V standoff<\/td><\/tr>\n
        Nexperia<\/td>BZG03C15<\/td>SMB<\/td>Equivalent Zener, 1.3W<\/td><\/tr>\n
        onsemi<\/td>1SMB5929AT3G<\/td>SMB<\/td>\u00b15% tolerance variant<\/td><\/tr>\n
        ROHM<\/td>SMBZ15<\/td>SMB<\/td>Equivalent 15V Zener<\/td><\/tr>\n
        onsemi<\/td>1N5245BRLG<\/td>DO-35<\/td>Through-hole 15V Zener, 500mW<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10482","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=10482"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10482\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10482"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10482"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10482"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10482"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}