Overview
The SM30T33CAY is a Transient Voltage Suppressor (TVS) diode manufactured by STMicroelectronics. It is part of the SM30TY series, designed to protect sensitive automotive circuits against surges and electrostatic discharges. This component 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 |
|---|---|---|
| Part Number | SM30T33CAY | |
| Category | TVS - Diodes | |
| Manufacturer | STMicroelectronics | |
| Description | TVS DIODE 28VWM 45.4VC SMC | |
| Package | DO-214AB, SMC | |
| Series | Automotive, AEC-Q101, SM30TY, TRANSIL? | |
| Type | Zener | |
| Operating Temperature | -55°C ~ 175°C (TJ) | |
| Mounting Type | Surface Mount | |
| Voltage - Reverse Standoff (Typ) | 28V | |
| Voltage - Breakdown (Min) | 31.1V | |
| Voltage - Clamping (Max) @ Ipp | 45.4V | |
| Current - Peak Pulse (10/1000µs) | 66.1A | |
| Power - Peak Pulse | 3000W (3kW) | |
| Power Line Protection | No | |
| Bidirectional Channels | 1 |
Key Features
- High Surge Capability: The SM30T33CAY can handle peak pulse power dissipation of up to 3000W and peak pulse current of 66.1A.
- Automotive Compliance: Designed to protect against surges defined in ISO 7637-2 and electrostatic discharges according to ISO 10605.
- Planar Technology: Ensures low leakage current and high junction temperature for long-term reliability and stability.
- Wide Operating Temperature Range: Operates from -55°C to 175°C (TJ).
- Surface Mount Package: DO-214AB, SMC package for easy integration into surface mount designs.
- RoHS Compliant: Meets environmental compliance standards with ECOPACK2 packaging.
Applications
The SM30T33CAY is primarily used in automotive applications to protect sensitive circuits against transient voltages and electrostatic discharges. It is suitable for use in various automotive systems where high reliability and stability are crucial.
- Automotive electronics protection
- Protection against ISO 7637-2 surges
- Protection against electrostatic discharges (ESD) according to ISO 10605
Q & A
- What is the SM30T33CAY used for?
The SM30T33CAY is a TVS diode used to protect sensitive automotive circuits against transient voltages and electrostatic discharges.
- What is the peak pulse power dissipation of the SM30T33CAY?
The peak pulse power dissipation is up to 3000W (3kW).
- What is the operating temperature range of the SM30T33CAY?
The operating temperature range is from -55°C to 175°C (TJ).
- Is the SM30T33CAY RoHS compliant?
- What type of package does the SM30T33CAY use?
The SM30T33CAY uses a DO-214AB, SMC surface mount package.
- How does the SM30T33CAY protect against surges?
The SM30T33CAY protects against surges defined in ISO 7637-2 and electrostatic discharges according to ISO 10605 using the avalanche breakdown effect.
- What are the failure modes of TVS diodes like the SM30T33CAY?
The failure modes include short circuit failure, open circuit failure, and performance degradation, often caused by thermal breakdown, over-electrical stress, or manufacturing process issues.
- How does the planar technology in the SM30T33CAY benefit its performance?
The planar technology ensures low leakage current and high junction temperature, providing long-term reliability and stability.
- What is the voltage clamping capability of the SM30T33CAY?
The voltage clamping capability is up to 45.4V at peak pulse current.
- Is the SM30T33CAY suitable for high-end circuits?
