Overview
The SZMMBZ20VALT1G is a dual monolithic silicon Zener diode designed by onsemi 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) | |
| Working Peak Reverse Voltage (VRWM) | 17 - 20 | V |
| Breakdown Voltage (VBR) | 19.00 - 21.00 | V |
| Peak Power Dissipation @ 1.0 ms | 40 W | |
| Maximum Reverse Leakage Current (IR) | 50 nA | |
| Clamping Voltage @ Peak Pulse Current (VC) | 28 V | |
| ESD Rating | Class 3B (> 16 kV) per Human Body Model, Class C (> 400 V) per Machine Model | |
| Thermal Resistance Junction-to-Ambient (RJA) | 225 °C/W (FR-5 Board), 417 °C/W (Alumina Substrate) | |
| Maximum Case Temperature for Soldering | 260°C for 10 seconds | |
| Pb-Free Package | Available | |
| AEC-Q101 Qualified and PPAP Capable | Yes |
Key Features
- SOT-23 package allows either two separate unidirectional configurations or a single bidirectional configuration.
- Standard Zener breakdown voltage range from 5.6 V to 47 V.
- Peak power dissipation of 24 or 40 W @ 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.
- Void-free, transfer-molded, thermosetting plastic case with corrosion-resistant finish.
- Small package size suitable for high-density applications.
- AEC-Q101 qualified and PPAP capable, with SZ prefix for automotive and other applications requiring unique site and control change requirements.
Applications
- Voltage regulation and waveform clipping.
- MOSFET gate protection.
- General usage in various end products.
- Protection in voltage and ESD sensitive equipment such as computers, printers, business machines, communication systems, and medical equipment.
Q & A
- What is the primary function of the SZMMBZ20VALT1G Zener diode?
The primary function is to provide transient overvoltage protection in voltage and ESD sensitive equipment.
- What package type does the SZMMBZ20VALT1G come in?
The device comes in an SOT-23 (TO-236) package.
- What is the working peak reverse voltage range for the SZMMBZ20VALT1G?
The working peak reverse voltage range is from 17 V to 20 V.
- What is the peak power dissipation of the SZMMBZ20VALT1G?
The peak power dissipation is 40 W @ 1.0 ms (unidirectional).
- What are the ESD ratings for the SZMMBZ20VALT1G?
The ESD ratings are Class 3B (> 16 kV) per the Human Body Model and Class C (> 400 V) per the Machine Model.
- Is the SZMMBZ20VALT1G Pb-free?
- What are the thermal resistance values for the SZMMBZ20VALT1G?
The thermal resistance is 225 °C/W on an FR-5 board and 417 °C/W on an alumina substrate.
- Is the SZMMBZ20VALT1G AEC-Q101 qualified?
- What are some common applications for the SZMMBZ20VALT1G?
- What is the maximum case temperature for soldering the SZMMBZ20VALT1G?
