SMBJ28A

The SMBJ28A from AnBon is a robust and reliable transient voltage suppressor (TVS) diode designed to protect sensitive electronic components from voltage spikes and transients. This component 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 SMBJ28A is designed to clamp voltage spikes at a breakdown voltage of approximately 28 volts, making it suitable for circuits operating at or below this threshold.

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

3. Package Type: The diode is housed in a surface-mount SMB package, which is compact and allows for efficient thermal management. The package dimensions typically measure around 5.2 mm x 4.5 mm, making it suitable for space-constrained applications.

4. Response Time: The SMBJ28A features a fast response time, ensuring that it can react quickly to transient events, thereby providing effective protection for downstream components.

5. Clamping Voltage: During a transient event, the clamping voltage is maintained at a safe level, typically around 40 volts, which helps to prevent damage to sensitive devices connected to the circuit.

6. Operating Temperature Range: The diode operates effectively across a wide temperature range, typically from -55°C to +150°C, making it suitable for various environmental conditions.

7. Low Leakage Current: The SMBJ28A exhibits low leakage current under normal operating conditions, which helps to maintain the efficiency of the circuit and reduces power loss.

8. Applications: This TVS diode is ideal for use in power supply circuits, data lines, and signal lines where overvoltage protection is necessary. It is commonly used in automotive applications, industrial equipment, and consumer electronics.

Electrical Characteristics:

• Reverse Stand-off Voltage (V_R): 28V
• Breakdown Voltage (V_BR): 31V (min), 34V (max)
• Clamping Voltage (V_C): 40V (at 5A)
• Peak Power (P_PP): 600W (for 8/20μs waveform)
• Capacitance (C): Typically around 100pF at 1MHz

Conclusion:

The SMBJ28A from AnBon is a highly effective solution for protecting electronic circuits from voltage transients. Its combination of high power handling, fast response time, and compact packaging makes it an excellent choice for engineers looking to enhance the reliability and longevity of their electronic designs.