SMAJ18CA

The SMAJ18CA is a specific type of transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc. It is designed to protect sensitive electronic components from voltage spikes and transients, which can occur due to various factors such as electrostatic discharge (ESD), lightning strikes, or inductive load switching.

Key Features and Specifications:

1. Type: The SMAJ18CA is a unidirectional TVS diode, meaning it is designed to conduct current in one direction and clamp voltage spikes to a safe level.

2. Peak Power Dissipation: This device can handle a peak power dissipation of up to 400 watts, making it suitable for applications that may experience high-energy transients.

3. Reverse Stand-Off Voltage (V_RWM): The SMAJ18CA has a reverse stand-off voltage of 18 volts. This is the maximum voltage that can be applied to the diode without it conducting.

4. Clamping Voltage (V_C): When a transient occurs, the clamping voltage is the maximum voltage that the diode will allow to pass through. For the SMAJ18CA, this is typically around 28.5 volts at a specified peak pulse current.

5. Peak Pulse Current (I_PP): The device can handle a peak pulse current of 30 amperes, which is crucial for protecting circuits from high current surges.

6. Capacitance: The SMAJ18CA has a low capacitance, which helps maintain signal integrity in high-speed applications.

7. Package Type: The diode is housed in a DO-214AA (SMA) package, which is a surface-mount device (SMD) that allows for easy integration into various circuit designs.

8. Operating Temperature Range: The device operates effectively over a wide temperature range, typically from -55°C to +150°C, making it suitable for use in diverse environmental conditions.

9. Applications: The SMAJ18CA is commonly used in automotive, telecommunications, consumer electronics, and industrial applications where protection from voltage transients is critical.

10. Compliance and Standards: Littelfuse ensures that the SMAJ18CA meets various industry standards for reliability and performance, making it a trusted choice for engineers and designers.

Summary:

The SMAJ18CA from Littelfuse Inc. is a robust and reliable transient voltage suppressor diode that provides essential protection for electronic circuits against voltage spikes. With its high power dissipation capability, low clamping voltage, and wide operating temperature range, it is an ideal choice for a variety of applications requiring transient protection. Its compact DO-214AA package facilitates easy integration into modern electronic designs, ensuring that sensitive components remain safe from potentially damaging voltage transients.