SMBJ40CA

The SMBJ40CA is a transient voltage suppressor (TVS) diode manufactured by Shenzhen Jinkaisheng Electronics. It is designed to protect sensitive electronic components from voltage spikes and transients, making it an essential component in various electronic applications.

Key Features:

1. Voltage Rating: The SMBJ40CA is rated for a breakdown voltage of approximately 40 volts, which means it will start conducting when the voltage exceeds this threshold, effectively clamping the voltage to protect downstream components.

2. Power Dissipation: This device typically has a power dissipation capability of around 600 watts, allowing it to absorb significant energy from transient events without failing.

3. Package Type: The SMBJ40CA 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 can be easily integrated into various circuit designs.

4. Response Time: The diode has a fast response time, which is crucial for protecting sensitive electronics from rapid voltage spikes, such as those caused by lightning strikes or inductive load switching.

5. Clamping Voltage: The clamping voltage is typically specified at a certain peak pulse current, ensuring that the device will limit the voltage to a safe level during transient events.

6. Operating Temperature Range: The SMBJ40CA can operate over a wide temperature range, typically from -55°C to +150°C, making it suitable for use in various environmental conditions.

7. Applications: This TVS diode is commonly used in automotive electronics, telecommunications, consumer electronics, and industrial equipment, where protection from voltage transients is critical.

8. RoHS Compliance: The device is often compliant with RoHS (Restriction of Hazardous Substances) standards, ensuring that it is free from certain hazardous materials, which is important for environmental and health considerations.

Electrical Characteristics:

• Reverse Stand-off Voltage (V_R): 40V
• Breakdown Voltage (V_BR): Typically around 44V
• Clamping Voltage (V_C): Specified at a given peak pulse current
• Peak Pulse Power (P_PP): 600W (for a 10/1000μs waveform)
• Capacitance (C): Low capacitance, typically in the range of picofarads, ensuring minimal impact on signal integrity in high-speed applications.

Conclusion:

The SMBJ40CA from Shenzhen Jinkaisheng Electronics 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 a versatile choice for a wide range of applications in modern electronics.