SM15T33A

The SM15T33A is a transient voltage suppressor (TVS) diode manufactured by STMicroelectronics, designed to protect sensitive electronic components from voltage spikes and transients. This device is particularly useful in applications where overvoltage protection is critical, such as in telecommunications, automotive electronics, and industrial equipment.

Key Features:

1. Voltage Rating: The SM15T33A is designed to clamp voltage spikes at a breakdown voltage of approximately 33V, making it suitable for protecting circuits operating at lower voltage levels.

2. Peak Power Dissipation: The device can handle a peak power dissipation of up to 1500 watts (for a very short duration), which allows it to absorb significant energy from transient events without failing.

3. Low Clamping Voltage: The clamping voltage is relatively low, ensuring that the voltage seen by the protected components remains within safe limits during transient events.

4. Fast Response Time: The SM15T33A features a fast response time, which is crucial for effectively protecting sensitive components from fast-rising transients.

5. Package Type: The device is typically available in a DO-214AA (SMB) package, which is a surface-mount package that allows for easy integration into various circuit designs.

6. Operating Temperature Range: The SM15T33A operates effectively over a wide temperature range, making it suitable for use in diverse environmental conditions.

7. Unidirectional Configuration: This TVS diode is unidirectional, meaning it is designed to protect against voltage spikes in one direction, which is ideal for DC applications.

8. Applications: Common applications include ESD protection, surge protection in power lines, and safeguarding sensitive components in consumer electronics, automotive systems, and industrial controls.

Electrical Characteristics:

• Reverse Stand-off Voltage (V_R): 33V
• Breakdown Voltage (V_BR): Typically around 36V
• Clamping Voltage (V_C): Approximately 50V at a specified peak pulse current
• Peak Pulse Current (I_PP): Can handle up to 100A for a specified duration
• Capacitance: Low capacitance values, ensuring minimal impact on signal integrity in high-speed applications.

Conclusion:

The SM15T33A from STMicroelectronics is a robust and reliable solution for transient voltage suppression, providing essential protection for sensitive electronic components against voltage spikes. Its combination of high power handling capability, low clamping voltage, and fast response time makes it an excellent choice for a wide range of applications in various industries.