{"id":6251,"date":"2026-06-12T10:10:55","date_gmt":"2026-06-12T10:10:55","guid":{"rendered":"https:\/\/materialparts.com\/bzx585-b3v0\/"},"modified":"2026-06-12T10:10:55","modified_gmt":"2026-06-12T10:10:55","slug":"bzx585-b3v0","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/bzx585-b3v0\/","title":{"rendered":"BZX585-B3V0"},"content":{"rendered":"

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

The BZX585-B3V0 from Nexperia is a low-power 3.0V Zener voltage regulator diode in a SOD523 (SC-79) surface-mount package. It features +\/-2% tolerance, 300mW total power dissipation, and AEC-Q101 qualification for automotive applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Zener Voltage (VZ nom)<\/td>\n3.0V<\/td>\n<\/tr>\n
VZ Range<\/td>\n2.94V to 3.06V (+\/-2%)<\/td>\n<\/tr>\n
Test Current (IZ)<\/td>\n5 mA<\/td>\n<\/tr>\n
Total Power Dissipation<\/td>\n300 mW<\/td>\n<\/tr>\n
Non-repetitive Peak Reverse Power<\/td>\n40 W<\/td>\n<\/tr>\n
Forward Current (IF max)<\/td>\n200 mA<\/td>\n<\/tr>\n
Forward Voltage (VF max)<\/td>\n1.1V at IF=100mA<\/td>\n<\/tr>\n
Reverse Current (IR)<\/td>\n10 uA at VR=1V<\/td>\n<\/tr>\n
Zener Impedance<\/td>\n95 Ohms (max)<\/td>\n<\/tr>\n
Junction Temperature<\/td>\nMax 150 C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOD523 (SC-79, 1.2×0.8×0.6mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • +\/-2% voltage tolerance (B-series)<\/li>\n
  • Ultra-small SOD523 package (1.2 x 0.8mm)<\/li>\n
  • AEC-Q101 qualified (Q-versions)<\/li>\n
  • Wide Zener voltage range: 2.4V to 75V in E24 series<\/li>\n
  • Low differential resistance<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Voltage regulation and stabilization<\/li>\n
    • Overvoltage protection circuits<\/li>\n
    • Reference voltage generation<\/li>\n
    • Automotive electronics<\/li>\n
    • Consumer and industrial signal conditioning<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The BZX585-B3V0 from Nexperia is a low-power 3.0V Zener voltage regulator diode in a SOD523 (SC-79) surface-mount package. It features +\/-2% tolerance, 300mW total power dissipation, and AEC-Q101 qualification for automotive applications. Key Specifications Zener Voltage (VZ nom) 3.0V VZ Range 2.94V to 3.06V (+\/-2%) Test Current (IZ) 5 mA Total Power Dissipation […]<\/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":[19,13],"tags":[],"chip_brand":[140],"class_list":["post-6251","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-nexperia"],"acf":{"brief_explanation":"3.0V +\/-2% 300mW Zener diode in SOD523 (1.2x0.8mm), AEC-Q101 qualified","date_code":"","package_case":"SOD523 (SC-79, 1.2 x 0.8 x 0.6mm)","in_stock":11583,"datasheet":"https:\/\/assets.nexperia.com\/documents\/data-sheet\/BZX585_SER.pdf","price":"$0.03 @ 10ku","product_introduction":"The BZX585-B3V0 from Nexperia is a low-power Zener voltage regulator diode with a nominal breakdown voltage of 3.0V and +\/-2% tolerance. Part of the BZX585 series, it offers Zener voltages from 2.4V to 75V in the E24 range. The ultra-compact SOD523 (SC-79) package measures just 1.2 x 0.8 x 0.6mm, making it ideal for space-constrained applications. The device is rated for 300mW total power dissipation and 40W non-repetitive peak reverse power dissipation. AEC-Q101 qualified versions are available for automotive use.","working_principle":"The BZX585-B3V0 operates as a Zener voltage regulator using reverse breakdown characteristics. **Breakdown Region**: When reverse-biased voltage exceeds the Zener breakdown voltage (3.0V nominal), the diode enters avalanche breakdown. In this region, current increases rapidly while voltage remains nearly constant at VZ, providing voltage regulation. **Tolerance Control**: The B-series designation indicates +\/-2% tolerance, meaning the Zener voltage is guaranteed between 2.94V and 3.06V at the 5mA test current. **Dynamic Impedance**: The Zener impedance of 95 Ohms (max) represents the incremental resistance in the breakdown region. Lower impedance means better voltage regulation under varying load current. **Protection Mechanism**: The 40W non-repetitive peak reverse power rating allows the device to absorb short-duration transient surges without damage, while the 300mW continuous rating defines the steady-state power handling limit.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>Cathode (K)<\/td>N-type semiconductor, marked with band<\/td><\/tr>
      2<\/td>Anode (A)<\/td>P-type semiconductor<\/td><\/tr><\/table>","application_scenarios":"
      • Voltage Reference: Stable 3.0V reference for ADC\/DAC reference input circuits<\/li>
      • Overvoltage Protection: Clamping transient voltages to 3V on sensitive signal lines<\/li>
      • Level Shifting: Shifting 5V logic signals to 3V range using Zener clamp circuits<\/li>
      • Automotive ECU: Input voltage regulation and transient protection in automotive control units<\/li>
      • Portable Devices: Compact voltage stabilization in battery-powered consumer electronics<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        BZX585-C3V0<\/td>Nexperia<\/td>+\/-5% tolerance version<\/td><\/tr>
        BZX84-C3V0<\/td>Nexperia<\/td>SOT-23 package, +\/-5%<\/td><\/tr>
        MM3Z3V0ST1G<\/td>onsemi<\/td>SOD-323, 300mW, 3.0V<\/td><\/tr>
        BZT52C3V0-7-F<\/td>Diodes Inc<\/td>SOD-123, 500mW, 3.0V<\/td><\/tr>
        1N4619UR-1<\/td>Microsemi<\/td>DO-213AA, 250mW, 3.0V<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6251","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=6251"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/6251\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=6251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=6251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=6251"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=6251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}