Overview
The MMSZ5257BT1G is a Zener voltage regulator produced by onsemi, designed to provide stable voltage regulation in a variety of applications. This component is part of the MMSZ52xxBT1G series, which offers a wide range of Zener reverse voltages. The MMSZ5257BT1G is specifically rated for a nominal Zener voltage of 33 volts, making it suitable for medium current and general-purpose applications.
Key Specifications
| Parameter | Symbol | Min | Nom | Max | Units |
|---|---|---|---|---|---|
| Reverse Zener Voltage @ IZT | VZ | 31.35 | 33 | 34.65 | V |
| Maximum Zener Impedance @ IZT | ZZT | - | - | 58 | Ohms |
| Reverse Current @ VR | IR | - | - | 0.1 | μA |
| Total Power Dissipation on FR-5 Board @ TL = 75°C | PD | - | 500 | - | mW |
| Junction and Storage Temperature Range | TJ, Tstg | -55 | - | 150 | °C |
| Thermal Resistance, Junction-to-Ambient | RJA | - | 340 | - | °C/W |
| ESD Rating | - | - | > 16 kV | - | Human Body Model |
Key Features
- 500 mW power rating on FR-4 or FR-5 board
- Wide Zener reverse voltage range (2.4 V to 110 V)
- Package designed for optimal automated board assembly
- Small package size for high-density applications
- General-purpose, medium current capability
- ESD rating of Class 3 (> 16 kV) per Human Body Model
- SZ prefix for automotive and other applications requiring unique site and control change requirements
- AEC-Q101 qualified and PPAP capable
- Pb-free device
Applications
- Voltage regulation in electronic circuits
- Overvoltage protection
- Automotive electronics
- Industrial control systems
- Consumer electronics requiring stable voltage references
Q & A
- What is the nominal Zener voltage of the MMSZ5257BT1G?
The nominal Zener voltage of the MMSZ5257BT1G is 33 volts.
- What is the maximum power dissipation of the MMSZ5257BT1G on an FR-5 board?
The maximum power dissipation is 500 mW at a temperature of 75°C.
- What is the thermal resistance, junction-to-ambient, of the MMSZ5257BT1G?
The thermal resistance, junction-to-ambient, is 340 °C/W.
- Is the MMSZ5257BT1G ESD protected?
Yes, it has an ESD rating of Class 3 (> 16 kV) per Human Body Model.
- What is the junction and storage temperature range for the MMSZ5257BT1G?
The junction and storage temperature range is -55°C to +150°C.
- Is the MMSZ5257BT1G Pb-free?
Yes, the MMSZ5257BT1G is a Pb-free device.
- What are some common applications of the MMSZ5257BT1G?
Common applications include voltage regulation, overvoltage protection, automotive electronics, and industrial control systems.
- What is the package type of the MMSZ5257BT1G?
The package type is SOD-123.
- Is the MMSZ5257BT1G AEC-Q101 qualified?
Yes, the MMSZ5257BT1G is AEC-Q101 qualified and PPAP capable.
- What is the maximum Zener impedance of the MMSZ5257BT1G?
The maximum Zener impedance is 58 Ohms.
