{"id":6801,"date":"2026-06-21T12:32:46","date_gmt":"2026-06-21T12:32:46","guid":{"rendered":"https:\/\/materialparts.com\/mmsz4689-e3-08\/"},"modified":"2026-06-21T12:32:46","modified_gmt":"2026-06-21T12:32:46","slug":"mmsz4689-e3-08","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/mmsz4689-e3-08\/","title":{"rendered":"MMSZ4689-E3-08"},"content":{"rendered":"

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

The MMSZ4689-E3-08 from onsemi is a 75 V, 500 mW Zener voltage regulator diode in an SOD-123 surface mount package with +\/-5% tolerance, suitable for voltage regulation and protection.<\/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
\u0627\u0644\u0646\u0648\u0639<\/td>\nZener Voltage Regulator Diode<\/td>\n<\/tr>\n
Zener Voltage (VZ)<\/td>\n75 V nominal (+\/-5%)<\/td>\n<\/tr>\n
\u062a\u0628\u062f\u064a\u062f \u0627\u0644\u0637\u0627\u0642\u0629<\/td>\n500 mW<\/td>\n<\/tr>\n
Zener Impedance (ZZT)<\/td>\n380 Ohm @ IZT=0.5mA<\/td>\n<\/tr>\n
Leakage Current (IR)<\/td>\n0.1 uA @ VR=57V<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOD-123<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-65C to +150C (TJ)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 75 V Zener voltage with +\/-5% tolerance<\/li>\n
  • 500 mW power dissipation in SOD-123<\/li>\n
  • Low 0.1 uA reverse leakage current<\/li>\n
  • Compact SOD-123 surface mount package<\/li>\n
  • Lead-free and RoHS compliant<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Voltage regulation and reference<\/li>\n
    • Overvoltage protection and clamping<\/li>\n
    • Level shifting in mixed-voltage systems<\/li>\n
    • ESD protection for high-voltage lines<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MMSZ4689-E3-08 from onsemi is a 75 V, 500 mW Zener voltage regulator diode in an SOD-123 surface mount package with +\/-5% tolerance, suitable for voltage regulation and protection. Key Specifications Type Zener Voltage Regulator Diode Zener Voltage (VZ) 75 V nominal (+\/-5%) Power Dissipation 500 mW Zener Impedance (ZZT) 380 Ohm @ […]<\/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":[19,13],"tags":[],"chip_brand":[144],"class_list":["post-6801","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-on"],"acf":{"brief_explanation":"75V 500mW Zener Diode, 5% Tolerance, SOD-123 Package","date_code":"","package_case":"SOD-123 (2.65 x 1.60 x 0.90 mm)","in_stock":5678,"datasheet":"https:\/\/www.onsemi.com\/download\/data-sheet\/pdf\/mmsz4679e3-d.pdf","price":"$0.04 @ 1ku","product_introduction":"The MMSZ4689-E3-08 from onsemi is a 75 V Zener voltage regulator diode in a compact SOD-123 surface mount package with 500 mW power dissipation. The device provides +\/-5% Zener voltage tolerance with 380 Ohm dynamic impedance at 0.5 mA test current. The extremely low 0.1 uA reverse leakage at 57 V makes it suitable for low-current voltage reference and bias applications. The SOD-123 package offers a significantly smaller footprint than traditional SOD-80\/MiniMELF packages while maintaining adequate power handling.","working_principle":"The MMSZ4689-E3-08 operates in the reverse breakdown region as a Zener voltage regulator. At 75 V, the breakdown mechanism is primarily avalanche multiplication. When the reverse-biased voltage exceeds 75 V, the diode enters the breakdown region where current increases sharply while maintaining a nearly constant voltage. The 380 Ohm dynamic impedance determines voltage regulation quality: a 1 mA change in operating current produces a 380 mV change in Zener voltage. In forward bias, the device acts as a standard silicon diode with approximately 0.7 V forward voltage at 10 mA. The 500 mW power rating is achievable due to the SOD-123 package design with thermal resistance of approximately 250 K\/W from junction to ambient.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Cathode<\/td>Terminal<\/td>Cathode (indicated by polarity band)<\/td><\/tr>
      2<\/td>Anode<\/td>Terminal<\/td>Anode<\/td><\/tr><\/table>","application_scenarios":"
      • 75V reference clamp for high-voltage gate driver circuits<\/li>
      • Overvoltage protection on 48V telecom supply rails<\/li>
      • Voltage level shifting between 48V and 3.3V logic domains<\/li>
      • Bias network for high-voltage analog front-ends<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        onsemi<\/td>MMSZ4688-E3-08<\/td>SOD-123<\/td>68V variant in same series<\/td><\/tr>
        onsemi<\/td>MMSZ4690-E3-08<\/td>SOD-123<\/td>82V variant in same series<\/td><\/tr>
        Nexperia<\/td>BZX84C75,215<\/td>SOT-23<\/td>75V, 300mW, smaller<\/td><\/tr>
        Vishay<\/td>BZX84-C75<\/td>SOT-23<\/td>75V, 300mW, SOT-23<\/td><\/tr>
        Diodes Inc<\/td>MMSZ4689T1G<\/td>SOD-123<\/td>Pin-compatible equivalent<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6801","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=6801"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6801\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6801"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6801"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}