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MM3Z8V2ST1G

300mW Zener Diode, 8.2V nominal, 5%, 15Ohm ZZT, SOD-323

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Manufacturer Part：

MM3Z8V2ST1G

Package：

SOD-323 (2.5 x 1.25 x 0.85 mm)

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Description

Product Overview

The MM3Z8V2ST1G from onsemi is a 300 mW Zener voltage regulator diode with 8.2 V nominal Zener voltage and 5% tolerance in a SOD-323 surface mount package.

Key Specifications

Type Zener Voltage Regulator Diode
Zener Voltage (Nominal) 8.2 V
Zener Voltage Range 7.79 V to 8.61 V
Power Dissipation 300 mW
Zener Impedance (ZZT) 15 Ohm @ IZT=5mA
Leakage Current (IR) 0.5 uA @ VR=6V
Package SOD-323 (2.5 x 1.25 mm)
Operating Temperature -65C to +150C

Features

  • 8.2 V nominal Zener voltage with 5% tolerance
  • 300 mW power dissipation in compact SOD-323
  • Low Zener impedance of 15 Ohm
  • Low leakage current (0.5 uA at 6V)
  • Small footprint for high-density PCBs

Applications

  • Voltage regulation and reference
  • Signal clipping and clamping
  • Overvoltage protection for signal lines
  • Level shifting and bias networks
  • General purpose voltage stabilization

The MM3Z8V2ST1G from onsemi is a 300 mW surface mount Zener voltage regulator diode with a nominal Zener voltage of 8.2 V and 5% tolerance. The compact SOD-323 package provides high power density in a small footprint for space-constrained applications. The 15 Ohm Zener impedance at IZT=5mA provides stable voltage regulation with moderate load variation. The 0.5 uA low leakage current at 6 V reverse voltage minimizes power waste in bias networks. This device is part of the MM3Z series covering Zener voltages from 2.4 V to 75 V in the same package.

The MM3Z8V2ST1G operates as a Zener diode in the reverse breakdown region. When reverse-biased voltage exceeds the Zener breakdown voltage (8.2 V nominal), the diode enters the breakdown region where current increases sharply while maintaining a nearly constant voltage across its terminals. This voltage regulation property results from the Zener breakdown mechanism and avalanche multiplication at the 8.2 V level. The 15 Ohm Zener impedance determines the sensitivity of the Zener voltage to changes in operating current. In forward bias, the device behaves as a standard silicon diode with approximately 0.7 V forward voltage. The 300 mW power dissipation rating is achievable when the SOD-323 package is properly mounted on a PCB with adequate thermal relief.

Pin Name Type Function
1 Cathode Terminal Cathode (marked with band)
2 Anode Terminal Anode
  • 8.2V bias reference for analog circuitry
  • Overvoltage clamping on signal and data lines
  • Level shifting between logic voltage domains
  • Op-amp supply voltage reference and stabilization
  • General purpose voltage regulation in compact designs
Manufacturer Part Number Package Notes
onsemi MM3Z6V8ST1G SOD-323 6.8V variant in same series
Nexperia BZX84-C8V2,215 SOT-23 8.2V Zener, 300mW, SOT-23
Vishay BZX55C8V2-TAP DO-35 8.2V, through-hole, 500mW
Diodes Inc MMSZ8V2ST1G SOD-123 8.2V, 500mW, slightly larger
NXP BZX84-B8V2,215 SOT-23 8.2V, 2% tolerance, 300mW
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