Overview
The SM15T33A is a Transient Voltage Suppressor (TVS) diode produced by STMicroelectronics. It is part of the SM15T series, designed to protect sensitive electronic equipment against electrostatic discharges and electrical overstress. This device is particularly suited for applications requiring high reliability and stability, such as in high-end equipment and Switch-Mode Power Supplies (SMPS) where low leakage current and high junction temperature are essential.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Pulse Power Dissipation (10/1000 μs waveform) | 1500 | W |
| Stand-Off Voltage (VWM) | 28.2 | V |
| Breakdown Voltage (VBR) | 31.4 - 34.7 | V |
| Peak Pulse Current (IPP) (8/20 μs) | 169 | A |
| Maximum Clamping Voltage (VC) (10/1000 μs) | 45.7 | V |
| Power Dissipation on Infinite Heatsink at TA = 50 °C | 6.5 | W |
| Operating Junction and Storage Temperature Range | -65 to +150 | °C |
| Package Type | SMC (DO-214AB) | |
| RoHS Compliance | Ecopack2 | |
| Grade | Industrial |
Key Features
- Low profile package suitable for automated placement.
- Glass passivated chip junction for high reliability.
- Available in unidirectional and bidirectional configurations.
- 1500 W peak pulse power capability with a 10/1000 μs waveform.
- Excellent clamping capability and low inductance.
- Meets MSL level 1, per J-STD-020, with a maximum peak of 260 °C.
- AEC-Q101 qualified for automotive applications.
- RoHS-compliant and halogen-free options available.
Applications
The SM15T33A is used in various applications to protect sensitive electronics against voltage transients induced by inductive load switching, lightning, and other electrical overstress conditions. Typical applications include:
- Consumer electronics
- Computer systems
- Industrial equipment
- Automotive systems
- Telecommunication devices
- Protection of ICs, MOSFETs, and signal lines of sensor units.
Q & A
- What is the peak pulse power dissipation of the SM15T33A?
The peak pulse power dissipation of the SM15T33A is 1500 W with a 10/1000 μs waveform.
- What is the stand-off voltage (VWM) of the SM15T33A?
The stand-off voltage (VWM) of the SM15T33A is 28.2 V.
- What are the breakdown voltage (VBR) ranges for the SM15T33A?
The breakdown voltage (VBR) ranges for the SM15T33A are from 31.4 V to 34.7 V.
- What is the maximum clamping voltage (VC) of the SM15T33A?
The maximum clamping voltage (VC) of the SM15T33A is 45.7 V for a 10/1000 μs waveform.
- What is the operating junction and storage temperature range for the SM15T33A?
The operating junction and storage temperature range for the SM15T33A is -65 °C to +150 °C.
- Is the SM15T33A RoHS compliant?
- What are the typical applications of the SM15T33A?
The SM15T33A is used in consumer electronics, computer systems, industrial equipment, automotive systems, and telecommunication devices to protect against voltage transients.
- Is the SM15T33A suitable for automotive applications?
- What is the package type of the SM15T33A?
- What are the key features of the SM15T33A?
