SMBJ85A

The SMBJ85A 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 SMBJ85A has a breakdown voltage of approximately 85 volts, making it suitable for clamping voltage transients that exceed this threshold. It is designed to protect circuits operating at lower voltages from high-voltage spikes.

2. Power Dissipation: The device can handle a peak power dissipation of up to 600 watts for a short duration, which allows it to absorb significant energy from transient events without failing.

3. Package Type: The SMBJ85A is housed in a DO-214AA (SMB) package, which is a surface-mount device (SMD) that provides a compact footprint. This package is designed for efficient thermal management and is suitable for automated assembly processes.

4. Response Time: The SMBJ85A features a fast response time, typically in the nanosecond range, ensuring that it can react quickly to transient events and protect downstream components effectively.

5. Clamping Voltage: The clamping voltage is specified at a certain peak pulse current, which indicates the maximum voltage the device will allow to pass through during a transient event. This characteristic is crucial for ensuring that sensitive components are not exposed to damaging voltages.

6. Operating Temperature Range: The SMBJ85A is designed to operate over a wide temperature range, typically from -55°C to +150°C, making it suitable for various environmental conditions.

7. Applications: Common applications for the SMBJ85A include ESD protection, surge protection in power lines, and safeguarding sensitive components in automotive and industrial electronics.

8. Compliance and Standards: The device complies with various industry standards for safety and performance, ensuring reliability in critical applications.

Summary:

The SMBJ85A from Littelfuse Inc. is a robust and reliable transient voltage suppressor diode that provides essential protection for electronic circuits against voltage spikes. Its combination of high power handling, fast response time, and compact packaging makes it an ideal choice for a wide range of applications where overvoltage protection is necessary.