{"id":8056,"date":"2026-06-28T08:48:25","date_gmt":"2026-06-28T08:48:25","guid":{"rendered":"https:\/\/materialparts.com\/mm3z3v0st1g\/"},"modified":"2026-06-28T11:35:10","modified_gmt":"2026-06-28T11:35:10","slug":"mm3z3v0st1g","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/mm3z3v0st1g\/","title":{"rendered":"MM3Z3V0ST1G"},"content":{"rendered":"<h2>MM3Z3V0ST1G Overview<\/h2>\n<p>The MM3Z3V0ST1G is a 500mW Zener voltage regulator diode from onsemi, 3.0V Zener voltage, +\/-5% tolerance, in a SOD-323 package, suitable for low-power voltage regulation and voltage reference applications.<\/p>\n<h3>Key Features<\/h3>\n<ul>\n<li>Zener voltage: 3.0V<\/li>\n<li>Power dissipation: 500mW<\/li>\n<li>Tolerance: +\/-5%<\/li>\n<li>Zener impedance: 85 Ohm<\/li>\n<li>Reverse leakage: 3uA<\/li>\n<li>Operating temperature: -65C to 150C<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>MM3Z3V0ST1G Overview The MM3Z3V0ST1G is a 500mW Zener voltage regulator diode from onsemi, 3.0V Zener voltage, +\/-5% tolerance, in a SOD-323 package, suitable for low-power voltage regulation and voltage reference applications. Key Features Zener voltage: 3.0V Power dissipation: 500mW Tolerance: +\/-5% Zener impedance: 85 Ohm Reverse leakage: 3uA Operating temperature: -65C to 150C<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,56],"tags":[],"chip_brand":[144],"class_list":["post-8056","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-mosfets","chip_brand-on"],"acf":{"brief_explanation":"3V Zener diode, 300mW, 5% tolerance, SOD-323","date_code":"","package_case":"SOD-323 (1.70 x 1.25 x 0.90 mm)","in_stock":8278,"datasheet":"https:\/\/www.onsemi.com\/download\/data-sheet\/en\/MM3Z2V4ST1A-D.pdf","price":"$0.04 @ 1ku","product_introduction":"The MM3Z3V0ST1G is a 3.0 V, 300 mW Zener voltage regulator diode from onsemi in an ultra-small SOD-323 (SC-76) surface-mount package. It provides a nominal Zener voltage of 3.0 V with plus or minus 5 percent tolerance at a test current of 5 mA. The compact footprint (1.7 x 1.25 x 0.9 mm) and low leakage current of 10 uA at 1 V reverse bias make it ideal for voltage referencing, biasing, and low-power clamping in space-constrained applications. RoHS-compliant and halogen-free.","working_principle":"The MM3Z3V0ST1G operates in the reverse breakdown (Zener) region. When reverse-biased voltage exceeds the Zener knee voltage (approximately 2.90 V), current begins to flow through the depletion region. In this 3 V device, the breakdown mechanism is primarily quantum tunneling (true Zener effect) rather than avalanche multiplication, which dominates at higher voltages. The low dynamic impedance of 100 Ohm at the test current (5 mA) provides reasonable regulation against input voltage and load current variations. The device maintains stable voltage across its operating temperature range with a temperature coefficient of approximately -3.5 mV per degree C, which is characteristic of low-voltage Zener diodes. The glass-passivated junction ensures stable leakage and breakdown characteristics over time.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Description<\/th><\/tr><tr><td>1<\/td><td>Cathode<\/td><td>Negative terminal when forward biased; connect to positive rail for Zener regulation<\/td><\/tr><tr><td>2<\/td><td>Anode<\/td><td>Positive terminal when forward biased; connect to ground for Zener regulation<\/td><\/tr><\/table><p>Package: SOD-323 (SC-76), Case 477. The cathode is identified by a bar stripe on the package body. For Zener regulation, the cathode connects to the more positive voltage rail with a series current-limiting resistor.<\/p>","application_scenarios":"<ul><li><strong>Voltage Reference<\/strong>: Low-cost 3 V reference for comparator thresholds and bias networks<\/li><li><strong>Signal Clamping<\/strong>: Limiting voltage excursions on digital I\/O and analog inputs to 3 V<\/li><li><strong>ESD Protection<\/strong>: Secondary ESD clamping for low-voltage signal lines in portable electronics<\/li><li><strong>Bias Stabilization<\/strong>: Maintaining stable gate bias in amplifier circuits powered from varying supplies<\/li><li><strong>Level Shifting<\/strong>: Creating a 3 V offset for single-supply op-amp circuits operating from higher rails<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>VZ<\/th><th>Power<\/th><th>Tolerance<\/th><th>Package<\/th><\/tr><tr><td>MM3Z3V0ST1G<\/td><td>onsemi<\/td><td>3.0 V<\/td><td>300 mW<\/td><td>5%<\/td><td>SOD-323<\/td><\/tr><tr><td>BZX84C3V0<\/td><td>Nexperia<\/td><td>3.0 V<\/td><td>300 mW<\/td><td>5%<\/td><td>SOT-23<\/td><\/tr><tr><td>MMSZ3V0ST1G<\/td><td>onsemi<\/td><td>3.0 V<\/td><td>300 mW<\/td><td>5%<\/td><td>SOD-123<\/td><\/tr><tr><td>BZT52C3V0<\/td><td>Diodes Inc<\/td><td>3.0 V<\/td><td>500 mW<\/td><td>5%<\/td><td>SOD-123<\/td><\/tr><tr><td>1N5227B<\/td><td>Multiple<\/td><td>3.0 V<\/td><td>500 mW<\/td><td>5%<\/td><td>DO-35<\/td><\/tr><\/table>\n<p>MM3Z3V0ST1G is a 3V\/300mW Zener diode from onsemi in SOD-323 (SC-76) package with \u00b15% tolerance. The MM3Z3V0S is the tape-and-reel version without T1G suffix. The SZMM3Z3V0ST1G variant carries AEC-Q101 automotive qualification. For higher power dissipation, MMSZ3V0T1G provides 500mW in SOD-123 package. BZX84C3V0 from NXP\/Infineon offers the same 3V Zener voltage in SOT-23-3 package with 300mW dissipation and \u00b16% tolerance.<\/p>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8056","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=8056"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8056\/revisions"}],"predecessor-version":[{"id":8075,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8056\/revisions\/8075"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8056"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8056"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8056"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8056"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}