SMBJ12CA

The SMBJ12CA is a specific type of transient voltage suppressor (TVS) diode manufactured by FTR (Fujitsu). This component is designed to protect sensitive electronic devices from voltage spikes and transients, which can occur due to various factors such as lightning strikes, electrostatic discharge (ESD), or power surges.

Key Features and Specifications:

1. Voltage Rating: The SMBJ12CA is rated for a breakdown voltage of approximately 12 volts. This means it will start to conduct and clamp the voltage to a safe level when the voltage exceeds this threshold, protecting downstream components.

2. Power Dissipation: The device typically has a power dissipation rating of around 600 watts, which indicates its ability to handle transient energy without failing.

3. Package Type: The SMBJ12CA is housed in a DO-214AA (SMB) package, which is a surface-mount device (SMD) that is compact and suitable for automated assembly processes. The package dimensions are generally around 5.2 mm x 3.5 mm x 1.5 mm, making it suitable for space-constrained applications.

4. Clamping Voltage: The clamping voltage is an important specification, as it indicates the maximum voltage that the device will allow to pass through during a transient event. For the SMBJ12CA, this value is typically around 20 volts, ensuring that connected components are protected from excessive voltage.

5. Reverse Stand-off Voltage: The reverse stand-off voltage is the maximum voltage that can be applied to the device without it conducting. For the SMBJ12CA, this is around 12 volts, making it suitable for applications where the normal operating voltage is within this range.

6. Response Time: The SMBJ12CA has a very fast response time, typically in the nanosecond range, allowing it to react quickly to transient events and minimize the risk of damage to sensitive components.

7. Applications: This TVS diode is commonly used in various applications, including telecommunications, consumer electronics, automotive electronics, and industrial equipment. It is particularly useful in protecting data lines, power lines, and sensitive microcontrollers.

8. Temperature Range: The operating temperature range for the SMBJ12CA is typically from -55°C to +150°C, making it suitable for a wide range of environmental conditions.

9. RoHS Compliance: The SMBJ12CA is often compliant with RoHS (Restriction of Hazardous Substances) regulations, ensuring that it is free from certain hazardous materials, which is important for environmentally conscious manufacturing.

Summary:

The SMBJ12CA from FTR is a robust and reliable transient voltage suppressor diode designed to protect electronic circuits from voltage spikes. With its compact package, high power dissipation capability, and fast response time, it is an ideal choice for a variety of applications where voltage protection is critical. Its specifications make it suitable for both consumer and industrial electronics, ensuring the longevity and reliability of sensitive components.