Overview
The SM6T27AY is an automotive-grade Transient Voltage Suppressor (TVS) produced by STMicroelectronics. It is part of the SM6TY series, designed to protect sensitive automotive circuits against surges defined in ISO 7637-2 and electrostatic discharges according to ISO 10605. This component utilizes Planar technology, ensuring compatibility with high-end circuits by providing low leakage current and high junction temperature reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power Dissipation (10/1000 µs) | 600 | W |
| Peak Pulse Power Dissipation (8/20 µs) | 4 kW | kW |
| Stand-off Voltage | 27 V | V |
| Maximum Junction Temperature | 150 °C | °C |
| Leakage Current at 25 °C | 0.2 µA | µA |
| Leakage Current at 85 °C | 1 µA | µA |
| Storage Temperature Range | -65 to +150 °C | °C |
| Maximum Lead Temperature for Soldering | 260 °C | °C |
| Package Type | SMB |
Key Features
- AEC-Q101 qualified for automotive applications.
- High peak pulse power dissipation: 600 W (10/1000 µs) and 4 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.
- Compliance with various standards: UL94 V0, J-STD-020 MSL level 1, J-STD-002, JESD 22-B102 E3, MIL-STD-750 method 2026, and IPC7531 footprint.
- High electrostatic discharge (ESD) protection: up to 30 kV (air and contact discharge) according to ISO 10605 and IEC 61000-4-2.
- Surge protection according to ISO 7637-2.
- Lead finishing: matte tin plating.
Applications
The SM6T27AY is designed for protecting sensitive automotive circuits from electrical surges and electrostatic discharges. It is particularly suitable for use in various automotive systems, including but not limited to:
- Engine control units (ECUs).
- Safety and security systems (e.g., airbag systems, anti-lock braking systems).
- Infotainment and navigation systems.
- Body and chassis control systems.
- Other high-reliability automotive electronic components.
Q & A
- What is the peak pulse power dissipation of the SM6T27AY?
The peak pulse power dissipation is 600 W for a 10/1000 µs pulse and 4 kW for an 8/20 µs pulse.
- What is the stand-off voltage of the SM6T27AY?
The stand-off voltage is 27 V.
- What are the operating junction temperature limits for the SM6T27AY?
The operating junction temperature range is -55 to +150 °C.
- Is the SM6T27AY compliant with automotive standards?
- What is the leakage current of the SM6T27AY at different temperatures?
The leakage current is 0.2 µA at 25 °C and 1 µA at 85 °C.
- What package type does the SM6T27AY come in?
The SM6T27AY comes in an SMB package.
- What is the maximum lead temperature for soldering the SM6T27AY?
The maximum lead temperature for soldering is 260 °C.
- Does the SM6T27AY provide ESD protection?
- What are the storage temperature limits for the SM6T27AY?
The storage temperature range is -65 to +150 °C.
- Is the SM6T27AY suitable for high-reliability applications?
