BZW04-136B-E3/73

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TVS (Transient Voltage Suppressor) diodes, not to be confused with general diode applications, are optimized for use in markets or applications which require protection from electrical surges, such as automotive environments, building automation, industrial components, telecommunications and more. The BZW04-136B-E3/73 is a common TVS diode found in numerous applications.

Application field

TVS diodes provide a higher level of surge protection than other diodes due to their high clamping voltage, high clamping ratio and fast response time. The BZW04-136B-E3/73 can be found in a range of applications, including, but not limited to, automotive airbag ignition systems, railway signalling systems, telecommunications and LCD monitor surge protection. The BZW04-136B-E3/73 is also widely used in various consumer electronic products as a general surge protection device.

Working Principle

The BZW04-136B-E3/73 TVS diode works by quickly clamping excessive voltage to a safe level, typically below 5V. This is achieved by using VBR or Voltage Breakdown Reverse and a breakdown voltage range of 13.6-14V. When a surge of excessive voltage is higher than the breakdown voltage, the TVS diode quickly clamps the voltage to the breakdown voltage or below. Once the surge is over, the BZW04-136B-E3/73 TVS diode returns to its non-conducting state.

In order to ensure that the BZW04-136B-E3/73 TVS diode is able to operate accurately, it must be properly interfaced with the system. This means using the correct line capacitance, fly-back diode, and R-C snubber circuit. If the circuit is not properly designed and interfaced with the BZW04-136B-E3/73, it may not be able to withstand the excessive voltage surges, causing it to fail.

Key Characteristics

The BZW04-136B-E3/73 has the following key characteristics:

• Breakdown Voltage of 13.6-14V
• CDE capacitance of 68pF
• ESD protection up to 2kV
• Peak power dissipation of 600W
• RoHS compliant

Conclusion

The BZW04-136B-E3/73 TVS diode is a widely used and effective surge protection device. It is capable of safely clamping excessive voltage and dissipating the current generated during the surge. Proper design and implementation is critical in order to ensure that the BZW04-136B-E3/73 will function effectively and protect against power surges.

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