Overview
The SMAJ43A-TR is a Transient Voltage Suppressor (TVS) diode produced by STMicroelectronics. This component is part of the SMAJ series, designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. The SMAJ43A-TR is specifically engineered to provide high reliability and stability in high-end circuits, with features such as low leakage current and high junction temperature tolerance.
Key Specifications
| Parameter | Symbol | Value | Unit |
|---|---|---|---|
| Stand-off Voltage | V_RWM | 43 | V |
| Peak Pulse Power Dissipation (10/1000 µs) | P_PP | 400 | W |
| Peak Pulse Power Dissipation (8/20 µs) | P_PP | 2.3 kW | |
| Peak Pulse Current (8/20 µs) | I_PP | 25 | A |
| Operating Junction Temperature Range | T_j | -55 to +150 | °C |
| Storage Temperature Range | T_stg | -65 to +150 | °C |
| Maximum Lead Temperature for Soldering | T_L | 260 | °C |
| Leakage Current at 25 °C | I_R | 0.2 | µA |
| Leakage Current at 85 °C | I_R | 1 | µA |
Key Features
- High Peak Pulse Power Dissipation: Up to 400 W (10/1000 µs) and 2.3 kW (8/20 µs).
- Low Leakage Current: 0.2 µA at 25 °C and 1 µA at 85 °C.
- High Junction Temperature: Operating junction temperature range of -55 to +150 °C.
- ESD Protection: Compliant with IEC 61000-4-2, exceeding level 4 with 30 kV (air and contact discharge).
- Compact Package: Surface mount DO-214AC (SMA) package, compatible with high-end circuits.
- High Reliability: Planar technology ensures long-term reliability and stability.
- Soldering Compatibility: Guaranteed for reflow soldering up to 260 °C.
- Environmental Compliance: RoHS compliant, halogen-free, and meets UL94 V0 flammability rating).
Applications
The SMAJ43A-TR is ideal for protecting sensitive electronic equipment in various applications, including:
- Telecom: Protection of I/O interfaces and VCC bus in telecommunications equipment.
- Computer Systems: Protection of vulnerable circuits in computer hardware).
- Industrial Electronics: Protection against electrical overstress and surges in industrial control systems).
- Consumer Electronics: Protection of electronic devices from transient voltage events).
Q & A
- What is the stand-off voltage of the SMAJ43A-TR?
The stand-off voltage of the SMAJ43A-TR is 43 V.
- What is the peak pulse power dissipation of the SMAJ43A-TR?
The peak pulse power dissipation is up to 400 W (10/1000 µs) and 2.3 kW (8/20 µs).
- What is the maximum operating junction temperature of the SMAJ43A-TR?
The maximum operating junction temperature is 150 °C.
- Is the SMAJ43A-TR compliant with ESD standards?
Yes, it complies with IEC 61000-4-2, exceeding level 4 with 30 kV (air and contact discharge).
- What is the package type of the SMAJ43A-TR?
The SMAJ43A-TR is packaged in a surface mount DO-214AC (SMA) package.
- What are the typical applications of the SMAJ43A-TR?
It is used in telecom, computer, industrial, and consumer electronics to protect against transient voltage events.
- Is the SMAJ43A-TR RoHS compliant?
Yes, the SMAJ43A-TR is RoHS compliant and halogen-free.
- What is the maximum lead temperature for soldering the SMAJ43A-TR?
The maximum lead temperature for soldering is 260 °C.
- What is the leakage current of the SMAJ43A-TR at 25 °C?
The leakage current at 25 °C is 0.2 µA.
- Does the SMAJ43A-TR meet any specific soldering standards?
Yes, it meets J-STD-020 MSL level 1 and is guaranteed for reflow soldering up to 260 °C.
