Overview
The SM15T22AY is a high-performance Transient Voltage Suppressor (TVS) designed by STMicroelectronics for protecting sensitive automotive circuits against various electrical surges and electrostatic discharges. This component is part of the SM15TY series, which is AEC-Q101 qualified, ensuring it meets the stringent requirements of the automotive industry. The SM15T22AY is housed in a Surface Mount Ceramic (SMC) package and is available in both unidirectional and bidirectional configurations.
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 | 22 V | V |
| Operating Junction Temperature Range | -55 to +150 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Maximum Lead Temperature for Soldering | 260 | °C |
| Leakage Current at 25 °C | 0.2 μA | μA |
| Leakage Current at 85 °C | 1 μA | μA |
| Compliance Standards | UL94 V0, J-STD-020 MSL level 1, J-STD-002, 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 peak pulse power dissipation: 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 up to 150 °C
- Unidirectional and bidirectional types available
- Compliant with various industry standards including UL94 V0, J-STD-020, J-STD-002, and more
- Lead finishing: matte tin plating
- High power capability at high junction temperatures
Applications
The SM15T22AY is designed to protect sensitive automotive circuits from electrical surges and electrostatic discharges. It is particularly useful in applications such as:
- Automotive electronics protection (e.g., infotainment systems, navigation, and safety systems)
- Protection against ISO 7637-2 surges and ISO 10605 electrostatic discharges
- High-reliability systems requiring low leakage current and high junction temperature stability
Q & A
- What is the peak pulse power dissipation of the SM15T22AY?
The peak pulse power dissipation is up to 1500 W (10/1000 μs) and 10 kW (8/20 μs).
- What are the operating junction temperature limits of the SM15T22AY?
The operating junction temperature range is from -55 °C to +150 °C.
- Is the SM15T22AY AEC-Q101 qualified?
- 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 types of TVS configurations are available for the SM15T22AY?
The SM15T22AY is available in both unidirectional and bidirectional configurations.
- What standards does the SM15T22AY comply with?
The SM15T22AY complies with standards such as UL94 V0, J-STD-020, J-STD-002, 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.
- What is the storage temperature range for the SM15T22AY?
The storage temperature range is from -65 °C to +150 °C.
- What is the package type of the SM15T22AY?
The SM15T22AY is housed in a Surface Mount Ceramic (SMC) package.
- What is the lead finishing of the SM15T22AY?
The lead finishing is matte tin plating.
- Where can I find more detailed application and design guidelines for the SM15T22AY?
More information is available in the application note AN2689 “Protection of automotive electronics from electrical hazards, guidelines for design and component selection”.
