Overview
The SZMMSZ4678T1G is a Zener voltage regulator diode produced by onsemi, designed for various voltage regulation and protection applications. This device is part of the MMSZ4xxxT1G series, which offers a wide range of Zener reverse voltages in a compact SOD-123 surface mount package. It is suitable for high-density applications and is optimized for automated board assembly.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Total Power Dissipation on FR-5 Board | 500 | mW |
| Thermal Resistance, Junction-to-Ambient | 340 | °C/W |
| Thermal Resistance, Junction-to-Lead | 150 | °C/W |
| Junction and Storage Temperature Range | -55 to +150 | °C |
| Zener Reverse Voltage (VZ) at IZT | 1.8 | V |
| Reverse Current (IZT) | 50 | μA |
| Forward Current (IF) | 10 | mA |
| Forward Voltage (VF) at IF | 0.9 | V |
| ESD Rating | Class 3 (> 16 kV) per Human Body Model | |
| Package Type | SOD-123 | |
| Flammability Rating | UL 94 V-0 | |
| Pb-Free and RoHS Compliant | Yes |
Key Features
- 500 mW rating on FR-4 or FR-5 board
- Wide Zener reverse voltage range from 1.8 V to 43 V
- Low reverse current (IZT) of 50 μA
- Package designed for optimal automated board assembly
- Small package size for high-density applications
- ESD rating of Class 3 (> 16 kV) per the Human Body Model
- AEC-Q101 qualified and PPAP capable for automotive and other critical applications
- Pb-free and RoHS compliant
Applications
- Voltage regulation and stabilization
- Waveform clipping and voltage limiting
- MOSFET gate protection
- General usage in various electronic devices requiring voltage regulation
Q & A
- What is the maximum power dissipation of the SZMMSZ4678T1G on an FR-5 board?
The maximum power dissipation is 500 mW. - What is the Zener reverse voltage range of the SZMMSZ4678T1G?
The Zener reverse voltage range is from 1.8 V to 43 V. - What is the typical reverse current (IZT) of the SZMMSZ4678T1G?
The typical reverse current (IZT) is 50 μA. - What is the thermal resistance of the SZMMSZ4678T1G from junction to ambient?
The thermal resistance from junction to ambient is 340 °C/W. - Is the SZMMSZ4678T1G Pb-free and RoHS compliant?
Yes, it is Pb-free and RoHS compliant. - What is the ESD rating of the SZMMSZ4678T1G?
The ESD rating is Class 3 (> 16 kV) per the Human Body Model. - What package type is used for the SZMMSZ4678T1G?
The package type is SOD-123. - Is the SZMMSZ4678T1G suitable for automotive applications?
Yes, it is AEC-Q101 qualified and PPAP capable, making it suitable for automotive and other critical applications. - What is the maximum case temperature for soldering purposes?
The maximum case temperature for soldering purposes is 260°C for 10 seconds. - What are some common applications of the SZMMSZ4678T1G?
Common applications include voltage regulation, waveform clipping, MOSFET gate protection, and general usage in various electronic devices.
