SMBJ48A

The SMBJ48A is a specific type of transient voltage suppressor (TVS) diode manufactured by Bourns, Inc. It is designed to protect sensitive electronic components from voltage spikes and transients, which can occur due to various factors such as lightning strikes, electrostatic discharge (ESD), or inductive load switching.

Key Features and Specifications:

1. Voltage Rating: The SMBJ48A has a breakdown voltage of approximately 48 volts, making it suitable for applications where the operating voltage is around this level. It is important to note that the breakdown voltage is the point at which the diode begins to conduct in reverse, effectively clamping the voltage to protect downstream components.

2. Power Dissipation: This device is capable of handling a peak power dissipation of up to 600 watts for a very short duration (typically 8/20 µs pulse). This high power rating allows it to absorb significant energy from transient events without failing.

3. Package Type: The SMBJ48A is housed in a surface-mount package, specifically the SMB (DO-214AA) package. This package type is known for its compact size and efficiency in thermal management, making it suitable for modern electronic designs where space is at a premium.

4. Clamping Voltage: The clamping voltage of the SMBJ48A is specified at a certain peak pulse current, which indicates the maximum voltage that will appear across the device during a transient event. This is crucial for ensuring that the voltage does not exceed the maximum ratings of the components being protected.

5. Reverse Leakage Current: The device exhibits low reverse leakage current under normal operating conditions, which is beneficial for maintaining the integrity of the circuit and minimizing power loss.

6. Temperature Range: The SMBJ48A operates effectively over a wide temperature range, typically from -55°C to +150°C. This makes it suitable for use in various environments, including industrial and automotive applications.

7. Applications: The SMBJ48A is commonly used in a variety of applications, including telecommunications, consumer electronics, automotive electronics, and industrial equipment. It is particularly useful in protecting data lines, power lines, and sensitive microcontrollers from voltage transients.

8. Compliance and Standards: Bourns, Inc. ensures that the SMBJ48A complies with various industry standards, making it a reliable choice for engineers looking for robust protection solutions.

Conclusion:

The SMBJ48A from Bourns, Inc. is a versatile and reliable transient voltage suppressor diode that provides essential protection for electronic circuits against voltage spikes. Its combination of high power handling, compact packaging, and wide operating temperature range makes it an ideal choice for a variety of applications in today's electronic devices.