Overview
The SMAJ12CA-TR is a Transient Voltage Suppressor (TVS) diode designed by STMicroelectronics to protect sensitive equipment against transient overvoltages and electrostatic discharges. This device is part of the SMAJ series, which complies with IEC 61000-4-2 and MIL STD 883, method 3015, for electrostatic discharge protection, and IEC 61000-4-4 and 5 for electrical overstress protection. The SMAJ12CA-TR is particularly suited for applications requiring protection against surges below 600 W (10/1000 μs).
Key Specifications
| Parameter | Value |
|---|---|
| Peak Pulse Power (10/1000 μs) | 400 W |
| Peak Pulse Power (8/20 μs) | 2.3 kW |
| Stand-off Voltage (VRM) | 12 V |
| Minimum Breakdown Voltage (VBR) | 13.3 V |
| Maximum Breakdown Voltage (VBR) | 14.7 V |
| Clamping Voltage (VC) | 19.9 V |
| Peak Pulse Current (IPP) | 20.1 A (10/1000 μs) |
| Leakage Current (IR) | 0.2 µA at 25 °C, 1 µA at 85 °C |
| Operating Junction Temperature | -55 °C to 150 °C |
| Directionality | Bidirectional |
| Package | DO-214AC (SMA) |
Key Features
- Low leakage current: 0.2 µA at 25 °C and 1 µA at 85 °C.
- High junction temperature: up to 150 °C.
- Unidirectional and bidirectional types available.
- Halogen-free and RoHS compliant.
- Surface mount package (DO-214AC) for optimized board space.
- Low profile package with built-in strain relief.
- Glass passivated junction for reliability.
- Low inductance and excellent clamping capability.
- Fast response time: typically less than 1.0 ps from 0 Volts to V(BR) for unidirectional types.
Applications
The SMAJ12CA-TR is suitable for a variety of applications requiring transient voltage suppression, including:
- Protection against electrostatic discharges (ESD) and electrical overstress (EOS).
- Surge protection in power supplies and electronic circuits.
- Automotive and industrial control systems.
- Telecommunication equipment.
- Consumer electronics requiring high reliability and protection against transient voltages.
Q & A
- What is the peak pulse power of the SMAJ12CA-TR?
The peak pulse power of the SMAJ12CA-TR is 400 W (10/1000 μs) and 2.3 kW (8/20 μs). - What is the stand-off voltage of the SMAJ12CA-TR?
The stand-off voltage (VRM) of the SMAJ12CA-TR is 12 V. - What is the operating junction temperature range of the SMAJ12CA-TR?
The operating junction temperature range is -55 °C to 150 °C. - Is the SMAJ12CA-TR RoHS compliant?
Yes, the SMAJ12CA-TR is RoHS compliant and halogen-free. - What is the package type of the SMAJ12CA-TR?
The SMAJ12CA-TR is packaged in a DO-214AC (SMA) surface mount package. - What are the key features of the SMAJ12CA-TR?
The key features include low leakage current, high junction temperature, unidirectional and bidirectional types, and excellent clamping capability. - What are typical applications for the SMAJ12CA-TR?
Typical applications include protection against ESD and EOS, surge protection in power supplies, automotive and industrial control systems, telecommunication equipment, and consumer electronics. - How does the SMAJ12CA-TR protect against transient voltages?
The SMAJ12CA-TR protects against transient voltages through its fast response time and excellent clamping capability, ensuring that the voltage across the protected circuit is limited to a safe level. - Is the SMAJ12CA-TR suitable for high-end circuits?
Yes, the SMAJ12CA-TR is suitable for high-end circuits due to its low leakage current and high junction temperature, providing long-term reliability and stability. - What is the clamping voltage of the SMAJ12CA-TR?
The clamping voltage (VC) of the SMAJ12CA-TR is 19.9 V.
