Overview
The MMSZ5259BT1G is a Zener voltage regulator from onsemi, part of the MMSZ52xxxT1G series. This device is designed for general-purpose, medium-current applications and is packaged in a surface-mount SOD-123 format. It offers a wide range of Zener reverse voltages, making it versatile for various circuit designs. The MMSZ5259BT1G is AEC-Q101 qualified and PPAP capable, ensuring its reliability and suitability for automotive and other demanding applications.
Key Specifications
| Parameter | Symbol | Min | Nom | Max | Units |
|---|---|---|---|---|---|
| Zener Voltage @ IZT | VZ | 37.05 | 39 | 40.95 | V |
| Reverse Current @ IZT | IZT | 20 | - | - | mA |
| Maximum Zener Impedance @ IZT | ZZT | - | - | 800 | Ω |
| Reverse Leakage Current @ VR | IR | - | - | 0.1 | μA |
| Total Power Dissipation on FR-5 Board | 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
- Surface-mount SOD-123 package designed for optimal automated board assembly
- Small package size suitable for high-density applications
- ESD rating of Class 3 (> 16 kV) per Human Body Model
- AEC-Q101 qualified and PPAP capable for automotive and other demanding applications
- Pb-free devices
Applications
- General-purpose voltage regulation
- Automotive electronics requiring AEC-Q101 qualification
- High-density circuit designs where space is limited
- Medium-current applications requiring stable voltage regulation
- Circuit protection and voltage clamping
Q & A
- What is the Zener voltage range of the MMSZ5259BT1G?
The Zener voltage range for the MMSZ5259BT1G is from 37.05 V to 40.95 V.
- What is the maximum power dissipation of the MMSZ5259BT1G on an FR-5 board?
The maximum power dissipation is 500 mW.
- What is the thermal resistance, junction-to-ambient, of the MMSZ5259BT1G?
The thermal resistance, junction-to-ambient, is 340 °C/W.
- Is the MMSZ5259BT1G suitable for automotive applications?
- What is the package type of the MMSZ5259BT1G?
The device is packaged in a surface-mount SOD-123 format.
- What is the ESD rating of the MMSZ5259BT1G?
The ESD rating is Class 3 (> 16 kV) per Human Body Model.
- Is the MMSZ5259BT1G Pb-free?
- What is the junction and storage temperature range of the MMSZ5259BT1G?
The junction and storage temperature range is from -55°C to +150°C.
- What are some typical applications of the MMSZ5259BT1G?
Typical applications include general-purpose voltage regulation, automotive electronics, high-density circuit designs, and medium-current applications.
- How is the Zener voltage measured for the MMSZ5259BT1G?
The nominal Zener voltage is measured with the device junction in thermal equilibrium at TL = 30°C ±1°C.
