SMAJ4742A-TP

The SMAJ4742A-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Components (MCC). It is designed to protect sensitive electronic components from voltage spikes and transients, making it an essential component in various applications, including automotive, telecommunications, and consumer electronics.

Key Features:

1. Type and Configuration:

   • The SMAJ4742A-TP is a unidirectional TVS diode, meaning it is designed to conduct current in one direction and clamp voltage spikes to a safe level.

2. Voltage Rating:

   • The breakdown voltage of the SMAJ4742A-TP is typically around 42V, which means it will start to conduct and clamp voltage when the applied voltage exceeds this threshold. This makes it suitable for protecting circuits operating at lower voltages.

3. Power Dissipation:

   • The device can handle a peak power dissipation of up to 400 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.

4. Capacitance:

   • The SMAJ4742A-TP features low capacitance, which is crucial for high-speed applications where signal integrity must be maintained. This characteristic minimizes the impact on the signal being protected.

5. Package Type:

   • The diode is housed in a DO-214AA (SMA) package, which is a surface-mount device (SMD) that provides a compact footprint and is suitable for automated assembly processes. The package is designed for efficient thermal dissipation.

6. Operating Temperature:

   • The device operates effectively over a wide temperature range, typically from -55°C to +150°C, making it suitable for use in various environmental conditions.

7. Applications:

   • The SMAJ4742A-TP is commonly used in applications such as:
     • ESD protection for data lines and power lines.
     • Overvoltage protection in automotive electronics.
     • Protection for sensitive components in consumer electronics.
     • Circuit protection in industrial equipment.

8. Compliance and Standards:

   • The device is compliant with various industry standards, ensuring reliability and performance in critical applications.

Summary:

The SMAJ4742A-TP from Micro Commercial Components is a robust and reliable transient voltage suppressor diode that provides essential protection against voltage transients. Its high power handling capability, low capacitance, and wide operating temperature range make it an ideal choice for a variety of electronic applications where circuit protection is paramount.