Overview
The SMM4F12A-TR is a high-performance Transient Voltage Suppressor (TVS) diode produced by STMicroelectronics. This component is part of the SMM4FxxA series, designed to protect sensitive electronic circuits from transient surges and voltage spikes. The SMM4F12A-TR features a unidirectional configuration and is housed in the STmite Flat package, which is known for its compact and thin design, making it suitable for high-end circuits requiring low leakage current and high junction temperature stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power Dissipation (10/1000 µs) | 400 | W |
| Peak Pulse Power Dissipation (8/20 µs) | 2.5 kW | |
| Stand-off Voltage | 12 V | V |
| Maximum Junction Temperature | -55 to +175 | °C |
| Maximum Lead Temperature for Soldering | 260 | °C |
| Leakage Current at 25 °C | 0.2 µA | |
| Leakage Current at 85 °C | 1 µA | |
| Package Type | STmite Flat | |
| Package Dimensions | 0.85 mm (thickness) | mm |
Key Features
- High Power Capability: The SMM4F12A-TR can handle peak pulse power dissipation of up to 400 W (10/1000 µs) and 2.5 kW (8/20 µs).
- Low Leakage Current: It features a low leakage current of 0.2 µA at 25 °C and 1 µA at 85 °C.
- High Junction Temperature: The component can operate with a maximum junction temperature of 175 °C.
- Compact Package: The STmite Flat package is thin (0.85 mm) and suitable for high-density circuit designs.
- Compliance with Standards: Complies with various standards including UL94 V0, J-STD-020 MSL level 1, and IEC 61000-4-2.
Applications
The SMM4F12A-TR is designed to protect sensitive electronic circuits in various applications, including:
- Automotive Systems: Protects against transient surges in automotive electrical systems.
- Industrial Control Systems: Safeguards industrial control circuits from voltage spikes.
- Consumer Electronics: Used in consumer electronics to protect against power surges and spikes.
- Telecommunication Equipment: Protects telecommunication equipment from transient voltages.
Q & A
- What is the peak pulse power dissipation of the SMM4F12A-TR?
The peak pulse power dissipation is 400 W (10/1000 µs) and 2.5 kW (8/20 µs). - What is the stand-off voltage of the SMM4F12A-TR?
The stand-off voltage is 12 V. - What is the maximum junction temperature of the SMM4F12A-TR?
The maximum junction temperature is 175 °C. - What is the leakage current at 25 °C and 85 °C?
The leakage current is 0.2 µA at 25 °C and 1 µA at 85 °C. - What package type is used for the SMM4F12A-TR?
The component is housed in the STmite Flat package. - What are the dimensions of the STmite Flat package?
The package thickness is 0.85 mm. - Does the SMM4F12A-TR comply with any specific standards?
Yes, it complies with standards such as UL94 V0, J-STD-020 MSL level 1, and IEC 61000-4-2. - What are the typical applications of the SMM4F12A-TR?
It is used in automotive systems, industrial control systems, consumer electronics, and telecommunication equipment. - How is the SMM4F12A-TR marked on the package?
The marking follows the scheme '4UF' for the SMM4F12A-TR. - What is the recommended soldering reflow profile for the SMM4F12A-TR?
The recommended profile is detailed in the datasheet, including a peak temperature of 240-245 °C.
