Overview
The SM6T33CAY is a Transil TVS (Transient Voltage Suppressor) diode produced by STMicroelectronics. It is part of the SM6TY series, designed to protect sensitive automotive circuits against surges defined in ISO 7637-2 and against electrostatic discharges according to ISO 10605. The device utilizes Planar technology, making it compatible with high-end circuits that require low leakage current and high junction temperature for long-term reliability and stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Breakdown Voltage | 33 V | V |
| Case/Package | DO-214AA (SMB) | |
| Clamping Voltage | 45.7 V | V |
| Diode Type | Zener | |
| Direction | Bidirectional | |
| Height | 2.45 mm | mm |
| Lead Free | Lead Free | |
| Length | 4.6 mm | mm |
| Max Breakdown Voltage | 34.7 V | V |
| Min Breakdown Voltage | 31.4 V | V |
| Max Operating Temperature | 150 °C | °C |
| Min Operating Temperature | -55 °C | °C |
| Max Power Dissipation | 600 W | W |
| Max Reverse Leakage Current | 200 nA | nA |
| Max Surge Current | 13.1 A | A |
| Mount | Surface Mount | |
| Number of Bidirectional Channels | 1 | |
| Number of Channels | 1 | |
| Number of Pins | 2 | |
| Packaging | Tape and Reel | |
| Peak Pulse Current | 68 A | A |
| Peak Pulse Power | 600 W | W |
| Polarity | Bidirectional | |
| RoHS Compliant | Yes | |
| Reverse Standoff Voltage | 28.2 V | V |
| Series | Automotive, AEC-Q101, SM6TY, TRANSIL™ | |
| Termination | SMD/SMT | |
| Test Current | 1 mA | mA |
| Width | 3.95 mm | mm |
Key Features
- AEC-Q101 qualified, ensuring compliance with automotive standards.
- Peak pulse power of 600 W (10/1000 μs) and 4 kW (8/20 μs), providing high surge protection capability.
- Stand-off voltage range from 5 V to 188 V, offering flexibility in various applications.
- Available in both unidirectional and bidirectional types to suit different circuit requirements.
- Low leakage current of 0.2 μA at 25 °C and 1 μA at 85 °C, minimizing power consumption.
- Operating junction temperature range of -55 °C to 150 °C, ensuring reliability in extreme temperatures.
- High power capability at Tj max: up to 515 W (10/1000 µs), enhancing protection against high-energy surges.
- Lead finishing with matte tin plating, improving solderability and reliability.
- Compliance with various standards including UL94, V0; J-STD-020 MSL level 1; and IEC 61000-4-4 level 4.
Applications
The SM6T33CAY is primarily designed to protect sensitive automotive circuits against electrical surges and electrostatic discharges. It is suitable for use in various automotive systems, including:
- Protection against ISO 7637-2 defined surges in automotive electrical systems.
- Protection against electrostatic discharges according to ISO 10605.
- High-end automotive circuits requiring low leakage current and high junction temperature stability.
Q & A
- What is the primary function of the SM6T33CAY?
The SM6T33CAY is a TVS diode designed to protect sensitive automotive circuits against electrical surges and electrostatic discharges.
- What are the key standards that the SM6T33CAY complies with?
The SM6T33CAY complies with AEC-Q101, ISO 7637-2, ISO 10605, UL94 V0, and J-STD-020 MSL level 1 among others.
- What is the peak pulse power dissipation of the SM6T33CAY?
The peak pulse power dissipation is 600 W (10/1000 μs) and 4 kW (8/20 μs).
- What is the operating junction temperature range of the SM6T33CAY?
The operating junction temperature range is from -55 °C to 150 °C.
- Is the SM6T33CAY RoHS compliant?
Yes, the SM6T33CAY is RoHS compliant.
- What is the maximum surge current the SM6T33CAY can handle?
The maximum surge current is 13.1 A.
- What type of packaging does the SM6T33CAY use?
The SM6T33CAY is packaged in Tape and Reel format.
- What is the clamping voltage of the SM6T33CAY?
The clamping voltage is 45.7 V.
- Is the SM6T33CAY available in both unidirectional and bidirectional types?
Yes, the SM6TY series, including the SM6T33CAY, is available in both unidirectional and bidirectional types.
- What is the lead finishing of the SM6T33CAY?
The lead finishing is matte tin plating.
