SMA6J28A

The SMA6J28A is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed to protect sensitive electronic components from voltage spikes and transients. This device is particularly useful in applications where overvoltage protection is critical, such as in telecommunications, automotive electronics, and consumer electronics.

Key Features:

1. Voltage Rating: The SMA6J28A has a breakdown voltage of approximately 28 volts, making it suitable for clamping voltage spikes that exceed this threshold while allowing normal operation below it.

2. Power Dissipation: This TVS diode can handle a peak power dissipation of up to 600 watts, which allows it to absorb significant energy from transient events without failing.

3. Package Type: The device is housed in a DO-214AA (SMA) package, which is a surface-mountable form factor. This package is compact, making it ideal for space-constrained applications while providing good thermal performance.

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

5. Response Time: The SMA6J28A features a fast response time, typically in the nanosecond range, which is crucial for protecting sensitive components from fast transients.

6. Operating Temperature Range: The device operates effectively over a wide temperature range, typically from -55°C to +150°C, ensuring reliability in various environmental conditions.

7. Applications: Common applications include ESD protection, surge protection in power lines, and safeguarding sensitive ICs in automotive and industrial environments.

8. Compliance and Standards: The SMA6J28A meets various industry standards for safety and performance, making it a reliable choice for engineers looking for robust transient protection solutions.

Electrical Characteristics:

• Reverse Stand-off Voltage (V_RWM): 28V
• Breakdown Voltage (V_BR): Typically around 31V
• Clamping Voltage (V_C): Specified at a given peak pulse current
• Peak Pulse Power (P_PP): 600W (for 10/1000μs waveform)
• Capacitance (C): Low capacitance value, ensuring minimal impact on signal integrity in high-speed applications.

Conclusion:

The SMA6J28A from Littelfuse Inc. is a highly effective transient voltage suppressor that provides essential protection for electronic circuits against voltage spikes. Its robust design, fast response time, and high power handling capabilities make it an excellent choice for a wide range of applications requiring reliable overvoltage protection.