SMBJ33A

The SMBJ33A is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., 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 consumer electronics.

Key Features:

1. Voltage Rating: The SMBJ33A has a breakdown voltage of approximately 33 volts, making it suitable for clamping voltage spikes that exceed this threshold. It is designed to protect circuits operating at lower voltages, ensuring that the components remain safe from damage.

2. Power Dissipation: The device can handle a peak power dissipation of up to 600 watts, which allows it to absorb significant energy from transient events without failing. This high power rating is essential for applications that may experience severe voltage surges.

3. Package Type: The SMBJ33A is housed in a DO-214AA (SMB) package, which is a surface-mount device (SMD) configuration. This package is compact and allows for easy integration into printed circuit boards (PCBs), making it suitable for space-constrained designs.

4. Response Time: The SMBJ33A features a fast response time, typically in the nanosecond range, which is crucial for effectively clamping voltage spikes before they can damage sensitive components.

5. Temperature Range: The operating temperature range for the SMBJ33A is typically from -55°C to +150°C, allowing it to function reliably in a variety of environmental conditions.

6. Capacitance: The device has a low capacitance, which minimizes signal distortion in high-speed data lines, making it ideal for protecting communication lines without affecting performance.

7. Applications: Common applications for the SMBJ33A include ESD protection, surge protection in power supplies, and safeguarding sensitive components in automotive and industrial electronics.

Electrical Characteristics:

• Reverse Stand-off Voltage (V_R): 33V
• Clamping Voltage (V_C): Typically around 50V at a specified peak pulse current.
• Peak Pulse Current (I_PP): The device can handle a specified peak pulse current, which is critical for determining its effectiveness in transient suppression.

Conclusion:

The SMBJ33A from Littelfuse Inc. is a robust and reliable transient voltage suppressor that provides essential protection for electronic circuits against voltage transients. Its combination of high power handling, fast response time, and compact packaging makes it an excellent choice for a wide range of applications where overvoltage protection is necessary.