Overview
The SM15T39CAY is a Transil™ transient voltage suppressor (TVS) diode manufactured by STMicroelectronics. This component is designed to protect sensitive automotive circuits against surges defined in ISO 7637-2 and electrostatic discharges according to ISO 10605. The SM15T39CAY utilizes planar technology, making it compatible with high-end circuits that require low leakage current and high junction temperature for long-term reliability and stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Voltage (ISO10605) | 30 | kV (Contact and Air Discharge) |
| Peak Pulse Power Dissipation | 1500 | W (10/1000 µs, Tj initial = Tamb) |
| Storage Temperature Range | -65 to +150 | °C |
| Operating Junction Temperature Range | -55 to +150 | °C |
| Maximum Lead Temperature for Soldering | 260 | °C (during 10 s) |
| Reverse Standoff Voltage (Typ) | 33.3 | V |
| Breakdown Voltage (Min) | 37.1 | V |
| Clamping Voltage (Max) @ Ipp | 69.7 | V |
| Peak Pulse Current (10/1000 µs) | 143 | A (8/20 µs) |
| Package | DO-214AB, SMC | |
| Mounting Type | Surface Mount |
Key Features
- High surge capability: 1500 W peak pulse power dissipation.
- Compliance with ISO 7637-2 and ISO 10605 standards for automotive surge and electrostatic discharge protection.
- Planar technology for low leakage current and high junction temperature, ensuring long-term reliability and stability.
- Bidirectional protection.
- Wide operating temperature range: -55°C to +150°C.
- Surface mount package (DO-214AB, SMC) for easy integration into modern circuit designs.
Applications
The SM15T39CAY is primarily used in automotive applications to protect sensitive electronic circuits from voltage surges and electrostatic discharges. It is suitable for use in various automotive systems, including but not limited to:
- Engine control units.
- Infotainment systems.
- Safety and security systems.
- Body control modules.
- Other high-reliability automotive electronics.
Q & A
- What is the peak pulse power dissipation of the SM15T39CAY?
The peak pulse power dissipation is 1500 W (10/1000 µs, Tj initial = Tamb).
- What standards does the SM15T39CAY comply with?
The SM15T39CAY complies with ISO 7637-2 for automotive surges and ISO 10605 for electrostatic discharges.
- What is the reverse standoff voltage of the SM15T39CAY?
The reverse standoff voltage is typically 33.3 V.
- What is the clamping voltage of the SM15T39CAY at peak pulse current?
The clamping voltage is 69.7 V at the peak pulse current.
- What is the operating junction temperature range of the SM15T39CAY?
The operating junction temperature range is -55°C to +150°C.
- What type of package does the SM15T39CAY use?
The SM15T39CAY uses a DO-214AB, SMC surface mount package.
- Is the SM15T39CAY bidirectional or unidirectional?
The SM15T39CAY provides bidirectional protection.
- What is the maximum lead temperature for soldering the SM15T39CAY?
The maximum lead temperature for soldering is 260°C during 10 seconds.
- What are the typical applications of the SM15T39CAY?
The SM15T39CAY is used in various automotive electronic systems, including engine control units, infotainment systems, and safety systems.
- Does the SM15T39CAY comply with RoHS standards?
