Overview
The SM6T39AY is a high-performance Transient Voltage Suppressor (TVS) diode designed by STMicroelectronics for automotive applications. This component is part of the SM6TY series, which is engineered to protect sensitive automotive circuits against surges defined in ISO 7637-2 and electrostatic discharges according to ISO 10605. The SM6T39AY utilizes Planar technology, ensuring compatibility with high-end circuits that require low leakage current and high junction temperature for long-term reliability and stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Part Number | SM6T39AY | |
| Maximum Reverse Stand-off Voltage | 33.3 | V |
| Peak Pulse Power Dissipation | 600 W (10/1000 μs), 4 kW (8/20 μs) | W / kW |
| Maximum Peak Pulse Current | 57 A | A |
| Low Leakage Current | 0.2 μA at 25 °C, 1 μA at 85 °C | μA |
| Operating Junction Temperature Range | -55 to +150 °C | °C |
| Directionality | Uni-Directional | |
| Package Type | DO-214AA (SMB) | |
| Dimensions | 4.6 x 3.95 x 2.45 mm | mm |
| Automotive Standard | AEC-Q101 qualified |
Key Features
- AEC-Q101 qualified, ensuring compliance with automotive standards.
- 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.
- High operating junction temperature: up to 150 °C.
- Uni-directional and bidirectional types available.
- Compliance with ISO 10605 and ISO 7637-2 standards for electrostatic discharges and surges.
- JEDEC registered package outline and resin meets UL 94, V0.
- Lead finishing: matte tin plating.
Applications
The SM6T39AY is designed for use in automotive systems to protect sensitive circuits from voltage surges and electrostatic discharges. It is particularly suitable for applications requiring high reliability and stability, such as:
- Automotive electronic control units (ECUs).
- Sensor and actuator protection.
- Infotainment and navigation systems.
- Power supply protection in automotive environments.
Q & A
- What is the peak pulse power dissipation of the SM6T39AY?
The peak pulse power dissipation is 600 W (10/1000 μs) and 4 kW (8/20 μs).
- What is the maximum operating junction temperature of the SM6T39AY?
The maximum operating junction temperature is 150 °C.
- Is the SM6T39AY AEC-Q101 qualified?
- What is the directionality of the SM6T39AY?
The SM6T39AY is a uni-directional TVS diode.
- What are the dimensions of the SM6T39AY?
The dimensions are 4.6 x 3.95 x 2.45 mm.
- What is the maximum reverse leakage current of the SM6T39AY?
The maximum reverse leakage current is 1 μA at 85 °C.
- What standards does the SM6T39AY comply with?
The SM6T39AY complies with ISO 10605 and ISO 7637-2 standards.
- What is the package type of the SM6T39AY?
The package type is DO-214AA (SMB).
- What is the storage temperature range for the SM6T39AY?
The storage temperature range is -65 to +150 °C.
- What is the maximum lead temperature for soldering?
The maximum lead temperature for soldering during 10 seconds is 260 °C.
