Overview
The SZMMBZ27VALT3G is a dual monolithic silicon Zener diode produced by onsemi, designed for applications requiring transient overvoltage protection capability. These devices are intended for use in voltage and ESD sensitive equipment such as computers, printers, business machines, communication systems, and medical equipment. The dual junction common anode design allows for the protection of two separate lines using only one package, making them ideal for situations where board space is limited.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOT-23 (TO-236) | - |
| Peak Power Dissipation @ 1.0 ms | 40 W | Watts |
| Working Peak Reverse Voltage (VRWM) | 22 V | Volts |
| Breakdown Voltage (VBR) @ IT | 25.65 - 28.35 V | Volts |
| Maximum Reverse Leakage Current (IR) @ VRWM | 50 nA | nA |
| Clamping Voltage @ Peak Pulse Current (VC) | 40 V | Volts |
| ESD Rating | Class 3B (> 16 kV) per Human Body Model, Class C (> 400 V) per Machine Model | - |
| Thermal Resistance Junction-to-Ambient (RJA) | 417 °C/W | °C/W |
| Maximum Case Temperature for Soldering | 260 °C for 10 seconds | °C |
Key Features
- SOT-23 package allowing either two separate unidirectional configurations or a single bidirectional configuration.
- Standard Zener breakdown voltage range from 5.6 V to 33 V.
- Peak power of 24 or 40 Watts @ 1.0 ms (unidirectional).
- ESD rating exceeding 16 kV per the Human Body Model and 400 V per the Machine Model.
- Low leakage current of less than 5.0 µA.
- Flammability rating UL 94V-O.
- Corrosion resistant finish, easily solderable.
- AEC-Q101 qualified and PPAP capable.
- SZ prefix for automotive and other applications requiring unique site and control change requirements.
Applications
- Voltage regulation and waveform clipping.
- MOSFET gate protection.
- Transient overvoltage protection in computers, printers, business machines, and communication systems.
- Medical equipment and other ESD sensitive devices.
- General usage in various end products where board space is limited.
Q & A
- What is the primary function of the SZMMBZ27VALT3G Zener diode?
The primary function is to provide transient overvoltage protection capability.
- What package type does the SZMMBZ27VALT3G come in?
The device comes in an SOT-23 (TO-236) package.
- What is the peak power dissipation of the SZMMBZ27VALT3G?
The peak power dissipation is 40 Watts @ 1.0 ms.
- What is the working peak reverse voltage (VRWM) of the SZMMBZ27VALT3G?
The working peak reverse voltage is 22 V.
- What are the ESD ratings of the SZMMBZ27VALT3G?
The ESD ratings are Class 3B (> 16 kV) per the Human Body Model and Class C (> 400 V) per the Machine Model.
- What is the thermal resistance junction-to-ambient (RJA) of the SZMMBZ27VALT3G?
The thermal resistance junction-to-ambient is 417 °C/W.
- Is the SZMMBZ27VALT3G suitable for automotive applications?
Yes, it is AEC-Q101 qualified and PPAP capable, making it suitable for automotive and other demanding applications.
- What is the maximum case temperature for soldering the SZMMBZ27VALT3G?
The maximum case temperature for soldering is 260 °C for 10 seconds.
- What are some common applications of the SZMMBZ27VALT3G?
Common applications include voltage regulation, MOSFET gate protection, and transient overvoltage protection in various electronic devices.
- Does the SZMMBZ27VALT3G have a Pb-free option?
Yes, Pb-free packages are available.
