Overview
The SM15T39AY is a high-performance Transient Voltage Suppressor (TVS) designed by STMicroelectronics for protecting sensitive automotive circuits. This component is part of the SM15TY series, which is engineered to withstand surges defined in ISO 7637-2 and electrostatic discharges according to ISO 10605. The SM15T39AY features STMicroelectronics' Planar technology, ensuring low leakage current and high junction temperature capabilities, which are crucial for long-term reliability and stability in high-end automotive applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power Dissipation (10/1000 µs) | 1500 | W |
| Peak Pulse Power Dissipation (8/20 µs) | 10 kW | W |
| Stand-off Voltage | 33.3 | V |
| Maximum Junction Temperature | 150 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Maximum Lead Temperature for Soldering | 260 | °C |
| Leakage Current at 25 °C | 0.2 | µA |
| Leakage Current at 85 °C | 1 | µA |
| Compliance Standards | UL94 V0, J-STD-020 MSL level 1, JESD 22-B102 E3, MIL-STD-750 method 2026, IEC 61000-4-4 level 4, ISO10605, ISO7637-2 |
Key Features
- AEC-Q101 qualified for automotive applications.
- High power capability: up to 1500 W (10/1000 µs) and 10 kW (8/20 µs).
- Low leakage current: 0.2 µA at 25 °C and 1 µA at 85 °C.
- Operating junction temperature range: -55 to +150 °C.
- Unidirectional and bidirectional types available.
- Compliant with various standards including UL94 V0, J-STD-020, JESD 22-B102, and MIL-STD-750.
- High surge capability: exceeds level 4 of IEC 61000-4-4 and ISO10605.
- Lead finishing: matte tin plating.
- ECOPACK compliant for environmental sustainability.
Applications
The SM15T39AY is designed to protect sensitive automotive circuits from electrical surges and electrostatic discharges. It is particularly useful in high-end automotive applications where reliability and stability are critical. These include but are not limited to:
- Automotive electronic control units (ECUs).
- Sensor systems.
- Infotainment systems.
- Power management systems.
Q & A
- What is the peak pulse power dissipation of the SM15T39AY? The peak pulse power dissipation is 1500 W (10/1000 µs) and 10 kW (8/20 µs).
- What is the stand-off voltage of the SM15T39AY? The stand-off voltage is 33.3 V.
- What are the operating junction temperature limits of the SM15T39AY? The operating junction temperature range is -55 to +150 °C.
- Is the SM15T39AY AEC-Q101 qualified? Yes, the SM15T39AY is AEC-Q101 qualified for automotive applications.
- What are the leakage current values at different temperatures? The leakage current is 0.2 µA at 25 °C and 1 µA at 85 °C.
- What standards does the SM15T39AY comply with? It complies with UL94 V0, J-STD-020 MSL level 1, JESD 22-B102 E3, MIL-STD-750 method 2026, IEC 61000-4-4 level 4, ISO10605, and ISO7637-2.
- What is the maximum lead temperature for soldering? The maximum lead temperature for soldering is 260 °C.
- Is the SM15T39AY available in unidirectional and bidirectional types? Yes, both unidirectional and bidirectional types are available.
- What is the significance of ECOPACK compliance? ECOPACK compliance indicates that the device meets certain environmental standards set by STMicroelectronics.
- What are some typical applications of the SM15T39AY? Typical applications include automotive electronic control units (ECUs), sensor systems, infotainment systems, and power management systems.
