Home > Industry Information > MM3Z30VB
The MM3Z30VB is a low-power Zener diode manufactured by onsemi, packaged in a compact SOD-323F surface-mount package. This device features a precise 30V Zener breakdown voltage with a tight tolerance of ±2%, specifically designed for low-power circuits requiring stable voltage reference, overvoltage protection, or voltage clamping. Its miniature package and Tape & Reel packaging make it ideal for large-scale automated production in modern space-constrained electronic devices.
Category:Discrete Semiconductor Products;Diodes;Zener;Single Zener Diodes
Mfr:onsemi
Packaging:Tape & Reel (TR);Cut Tape (CT);Digi-Reel®
Part Status:Active
Voltage - Zener (Nom) (Vz):30 V
Tolerance:±2%
Power - Max:200 mW
Impedance (Max) (Zzt):75 Ohms
Current - Reverse Leakage @ Vr:45 nA @ 21 V
Voltage - Forward (Vf) (Max) @ If:1 V @ 10 mA
Operating Temperature:-65°C ~ 150°C
Mounting Type:Surface Mount
Package / Case:SC-90, SOD-323F
Supplier Device Package:SOD-323F
Base Product Number:MM3Z30
Precise Voltage Regulation: 30V nominal Zener voltage combined with a tight ±2% tolerance provides a stable and reliable voltage reference.
Low Zener Impedance: A maximum dynamic impedance of 75 Ohms helps achieve more stable voltage regulation in the breakdown region.
Extremely Low Reverse Leakage Current: Only 45 nA at 21 V reverse voltage, indicating excellent reverse blocking characteristics and very low power loss.
Compact Package: Ultra-small SOD-323F package occupies minimal PCB area, suitable for high-density board designs.
Wide Operating Temperature Range: The broad range from -65°C to 150°C allows it to adapt to harsh environmental conditions, including industrial and high-reliability applications.
Defined Power Rating: The 200 mW power dissipation limit ensures designers use the component within its safe operating area.
Voltage Clamping and Overvoltage Protection: Protects IC input pins (e.g., MCU GPIOs, communication interfaces) from voltage transients or ESD damage.
Simple Voltage Reference: Provides a low-cost voltage reference for analog circuits or ADC reference circuits with low precision requirements.
Power Supply Regulation: Used as a simple linear regulator in low-current applications where efficiency is not critical.
Signal Level Limiting: Used in signal conditioning circuits to limit signal amplitude and prevent overloading of subsequent circuits.
Consumer Electronics: Widely used in portable devices like smartphones and tablets for local voltage regulation or protection at circuit nodes.
Automotive Electronics: Provides overvoltage protection in low-voltage circuits such as body control modules and sensor interfaces (system-level certification should be considered).
The MM3Z30VB is a stable-performance, compact 30V Zener diode. It combines precise voltage tolerance, low dynamic impedance, and a wide operating temperature range, offering effective voltage regulation and protection within a limited power budget. Whether used for precise voltage referencing or as a guardian for circuit signals, the MM3Z30VB delivers reliable performance in various electronic systems, making it a commonly used and trusted fundamental discrete component in modern compact electronic designs.
Industry Information
