Overview
The MMSZ5255BT1G is a Zener voltage regulator from onsemi, part of the MMSZ52xxxT1G series. This device is designed in the SOD-123 surface mount package, offering a compact and efficient solution for voltage regulation in various electronic circuits. The MMSZ5255BT1G is characterized by its high power dissipation capability and wide range of Zener reverse voltages, making it suitable for a broad spectrum of applications.
Key Specifications
| Parameter | Symbol | Min | Nom | Max | Units |
|---|---|---|---|---|---|
| Reverse Zener Voltage @ IZT | VZ | 26.60 | 28 | 29.40 | V |
| Reverse Current @ IZT | IZT | 20 | - | - | mA |
| Maximum Zener Impedance @ IZT | ZZT | - | - | 1600 | Ω |
| Reverse Leakage Current @ VR | IR | - | - | 0.25 | μA |
| Total Power Dissipation on FR-5 Board @ TL = 75°C | PD | - | 500 | - | mW |
| Thermal Resistance, Junction-to-Ambient | RθJA | - | 340 | - | °C/W |
| Junction and Storage Temperature Range | TJ, Tstg | -55 | - | 150 | °C |
Key Features
- 500 mW power rating on FR-4 or FR-5 board
- Wide Zener reverse voltage range from 2.4 V to 110 V @ thermal equilibrium
- 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
- AEC-Q101 qualified and PPAP capable for automotive and other critical applications
- Pb-free devices
Applications
- Voltage regulation in power supplies and DC-DC converters
- Overvoltage protection in electronic circuits
- Automotive electronics requiring high reliability and robustness
- Industrial control systems and automation
- Consumer electronics where compact and efficient voltage regulation is necessary
Q & A
- What is the maximum power dissipation of the MMSZ5255BT1G on an FR-5 board?
The maximum power dissipation is 500 mW at a temperature of 75°C, derated above 75°C.
- What is the Zener reverse voltage range for the MMSZ5255BT1G?
The Zener reverse voltage range is from 26.60 V to 29.40 V.
- What is the thermal resistance of the MMSZ5255BT1G from junction to ambient?
The thermal resistance from junction to ambient is 340 °C/W.
- Is the MMSZ5255BT1G suitable for automotive applications?
- What is the ESD rating of the MMSZ5255BT1G?
The ESD rating is Class 3 (> 16 kV) per Human Body Model.
- What is the junction and storage temperature range for the MMSZ5255BT1G?
The junction and storage temperature range is from -55°C to +150°C.
- Is the MMSZ5255BT1G a Pb-free device?
- What package type is the MMSZ5255BT1G available in?
The MMSZ5255BT1G is available in the SOD-123 surface mount package.
- What are some common applications of the MMSZ5255BT1G?
- How is the nominal Zener voltage measured for the MMSZ5255BT1G?
The nominal Zener voltage is measured with the device junction in thermal equilibrium at TL = 30°C ±1°C.
