Overview
The SM6T33AY is a high-performance Transil™ diode from STMicroelectronics, designed to protect sensitive automotive circuits against various types of electrical surges and electrostatic discharges. This component is part of the SM6TY series, which is specifically engineered to comply with automotive standards such as ISO 7637-2 and ISO 10605. The SM6T33AY utilizes planar technology, making it suitable for high-end circuits that require low leakage current and high junction temperature stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power (10/1000 µs) | 600 | W |
| Peak Pulse Power (8/20 µs) | 4 kW | |
| Stand-off Voltage | 28.2 | V |
| Breakdown Voltage (VBR) | 31.4 - 34.7 | V |
| Clamping Voltage (VCL) at 10/1000 µs | 45.7 | V |
| Peak Pulse Current (IPP) at 10/1000 µs | 13.1 | A |
| Leakage Current at 25 °C | 0.2 µA | |
| Operating Junction Temperature Range | -55 to 150 | °C |
| Storage Temperature Range | -65 to 150 | °C |
| Maximum Lead Temperature for Soldering | 260 | °C |
Key Features
- AEC-Q101 qualified for automotive applications.
- Unidirectional type.
- Low leakage current: 0.2 µA at 25 °C and 1 µA at 85 °C.
- High power capability: up to 515 W at Tj max (10/1000 µs).
- Compliant with ISO 10605 and ISO 7637-2 standards for electrostatic discharges and surges.
- UL94, V0 rated resin and JEDEC registered package outline.
- High junction temperature range: -55 to 150 °C.
- Matte tin plating on leads.
Applications
The SM6T33AY is primarily used in automotive electronics to protect sensitive circuits from electrical surges and electrostatic discharges. It is suitable for various automotive systems, including but not limited to:
- Engine control units.
- Infotainment systems.
- Safety and security systems.
- Body control modules.
- Other high-end automotive circuits requiring low leakage current and high reliability.
Q & A
- What is the peak pulse power rating of the SM6T33AY?
The SM6T33AY has a peak pulse power rating of 600 W (10/1000 µs) and 4 kW (8/20 µs).
- What is the stand-off voltage of the SM6T33AY?
The stand-off voltage of the SM6T33AY is 28.2 V.
- Is the SM6T33AY AEC-Q101 qualified?
- What are the operating and storage temperature ranges for the SM6T33AY?
The operating junction temperature range is -55 to 150 °C, and 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.
- Does the SM6T33AY comply with any specific standards for electrostatic discharges?
- What type of package does the SM6T33AY use?
The SM6T33AY is packaged in an SMB (JEDEC DO-214AA) footprint.
- What is the leakage current of the SM6T33AY at 25 °C and 85 °C?
- Is the SM6T33AY suitable for high-end automotive circuits?
- What is the clamping voltage of the SM6T33AY at 10/1000 µs?
