SMAJ18CA

The SMAJ18CA is a specific type of transient voltage suppressor (TVS) diode manufactured by Shenzhen Jinkaisheng Electronics. This component is designed to protect sensitive electronic circuits from voltage spikes and transients, which can occur due to various factors such as lightning strikes, electrostatic discharge (ESD), or switching events in power circuits.

Key Features:

1. Voltage Rating: The SMAJ18CA is rated for a breakdown voltage of approximately 18 volts. This means it will start conducting when the voltage exceeds this threshold, effectively clamping the voltage to protect downstream components.

2. Power Dissipation: The device can handle a peak power dissipation of around 400 watts, making it suitable for applications where high-energy transients may occur.

3. Package Type: The SMAJ18CA is housed in a DO-214AC (SMA) package, which is a surface-mount device (SMD) configuration. This package is compact, allowing for easy integration into various circuit designs while providing good thermal performance.

4. Response Time: The diode has a fast response time, which is crucial for protecting sensitive components from rapid voltage spikes.

5. Temperature Range: The operating temperature range for the SMAJ18CA typically spans from -55°C to +150°C, making it suitable for a wide variety of environments, including industrial and automotive applications.

6. Capacitance: The device features low capacitance, which is beneficial for high-speed data lines, ensuring that signal integrity is maintained while providing protection.

7. Applications: Common applications for the SMAJ18CA include telecommunications equipment, automotive electronics, consumer electronics, and any other circuits where overvoltage protection is necessary.

Electrical Characteristics:

• Reverse Stand-off Voltage (VRWM): 18V
• Clamping Voltage (VC): Typically around 28V at a specified peak pulse current.
• Peak Pulse Current (IPP): The device can handle a specified peak pulse current, which is critical for determining its effectiveness in transient suppression.

Conclusion:

The SMAJ18CA from Shenzhen Jinkaisheng Electronics is a robust and reliable transient voltage suppressor diode, ideal for protecting sensitive electronic components from voltage spikes. Its compact design, high power handling capability, and wide operating temperature range make it a versatile choice for various applications in modern electronic systems.