Overview
The SMAJ18CA-TR, manufactured by STMicroelectronics, is a Transient Voltage Suppressor (TVS) diode designed to protect sensitive electronic equipment from electrostatic discharges (ESD) and electrical overstress. This device is part of the SMAJ series, which is known for its high reliability and stability in high-end circuits. The SMAJ18CA-TR is packaged in a DO-214AC (SMA) footprint, adhering to the IPC 7531 standard.
It is specifically engineered to withstand surges below 600 W (10/1000 μs) and complies with IEC 61000-4-2 and MIL STD 883, method 3015, for ESD protection, as well as IEC 61000-4-4 and 5 for electrical overstress protection.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power (10/1000 μs) | 400 | Watts |
| Peak Pulse Power (8/20 μs) | 2.3 kW | Watts |
| Stand-off Voltage (Typ) | 18 | Volts |
| Voltage - Clamping (Max) @ Ipp | 39.3 | Volts |
| Current - Peak Pulse (10/1000 μs) | 59 A | Amps |
| Low Leakage Current @ 25 °C | 0.2 µA | Amps |
| Low Leakage Current @ 85 °C | 1 µA | Amps |
| Operating Junction Temperature (min) | -55 | °C |
| Operating Junction Temperature (max) | 150 | °C |
| Directionality | Bidirectional | |
| Package | DO-214AC, SMA |
Key Features
- High Peak Pulse Power: Capable of handling up to 400 W (10/1000 μs) and 2.3 kW (8/20 μs) peak pulse power.
- Low Leakage Current: Offers low leakage current of 0.2 µA at 25 °C and 1 µA at 85 °C.
- High Junction Temperature: Operates up to a junction temperature of 150 °C.
- Bidirectional Protection: Provides bidirectional protection, making it suitable for a wide range of applications.
- Compliance with Standards: Complies with IEC 61000-4-2, IEC 61000-4-4, and IEC 61000-4-5 standards for ESD and electrical overstress protection.
- RoHS Compliance: The device is RoHS compliant, ensuring environmental sustainability.
- Surface Mount Package: Packaged in a DO-214AC (SMA) footprint, suitable for surface mount applications.
Applications
The SMAJ18CA-TR is designed for general-purpose protection in various electronic systems, including:
- Protection against electrostatic discharges (ESD) in sensitive equipment.
- Surge protection in power lines and data lines.
- Electrical overstress protection in high-reliability circuits.
- Use in automotive, industrial, and consumer electronics where transient voltage suppression is critical.
Q & A
- What is the peak pulse power of the SMAJ18CA-TR?
The SMAJ18CA-TR can handle up to 400 W (10/1000 μs) and 2.3 kW (8/20 μs) peak pulse power.
- What is the stand-off voltage of the SMAJ18CA-TR?
The stand-off voltage is 18 V.
- What is the maximum clamping voltage of the SMAJ18CA-TR?
The maximum clamping voltage is 39.3 V.
- What is the leakage current of the SMAJ18CA-TR at 25 °C and 85 °C?
The leakage current is 0.2 µA at 25 °C and 1 µA at 85 °C.
- What is the operating junction temperature range of the SMAJ18CA-TR?
The operating junction temperature range is from -55 °C to 150 °C.
- Is the SMAJ18CA-TR bidirectional or unidirectional?
The SMAJ18CA-TR is bidirectional.
- What package type is the SMAJ18CA-TR available in?
The SMAJ18CA-TR is packaged in a DO-214AC (SMA) footprint.
- Is the SMAJ18CA-TR RoHS compliant?
Yes, the SMAJ18CA-TR is RoHS compliant.
- What standards does the SMAJ18CA-TR comply with for ESD and electrical overstress protection?
The SMAJ18CA-TR complies with IEC 61000-4-2, IEC 61000-4-4, and IEC 61000-4-5 standards.
- What are some common applications of the SMAJ18CA-TR?
The SMAJ18CA-TR is used in general-purpose protection, including ESD protection, surge protection, and electrical overstress protection in various electronic systems.
