BZW04-20-E3/73

Current - Peak Pulse (10/1000µs):	12A
Base Part Number:	BZW04
Supplier Device Package:	DO-204AL (DO-41)
Package / Case:	DO-204AL, DO-41, Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	400W
Series:	TransZorb®
Voltage - Clamping (Max) @ Ipp:	33.2V
Voltage - Breakdown (Min):	22.8V
Voltage - Reverse Standoff (Typ):	20.5V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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TVS - Diodes - BZW04-20-E3/73 Application Field and Working Principle

TVS (Transient Voltage Suppressor) diodes are electronic components designed to protect sensitive electronics from voltage pulses that are too big or too long. Such pulses can be generated by short circuits in nearby wiring, electrostatic discharges (ESD), lightning strikes, etc. The BZW04-20-E3/73 diode, manufactured by ON Semiconductor, is a small-size surface-mount protective device, designed to protect low-voltage circuits from overvoltage damage.

Application Field of BZW04-20-E3/73

The BZW04-20-E3/73 diode is designed for low-voltage applications like high-density portable equipment, electronic switching systems, and implanted medical devices. It provides customized peak clamping voltage according to customer’s requirements. With a breakdown voltage of 14.8 V, a maximum operating voltage of 14 V (typical), and a maximum leakage current of 5 uA (typical), it is especially suitable for cases where the use of a regular TVS diode is impractical due to space restrictions.

Working Principle of BZW04-20-E3/73

The BZW04-20-E3/73 is a P-N junction diode working according to the same working principle as a regular TVS diode. It is triggered by an overvoltage and starts to conduct, reducing the peak voltage applied to the protected circuits. It acts like a short when the voltage exceeds the breakdown voltage, taking most of the overvoltage away and providing a “clamping” effect. After the pulse ends, the diode stops conducting, and the voltage returns to its normal level. The BZW04-20-E3/73 is designed to handle high-voltage pulses of up to 1500 V, with typical on-state resistance of 0.5 Ω and dissipation of 0.1 W. It also has an auto-restart feature, where once the current passes out from the protected device, the diode automatically restore its normal condition without any effect on the protected electronics.

Advantages of BZW04-20-E3/73

The BZW04-20-E3/73 diode has several advantages compared to regular TVS diodes. It is significantly smaller, so it can fit into applications where a regular TVS diode would be too bulky. It also has a peak clamping voltage that can be customized according to customer’s requirements, further enhancing its flexibility. It is also designed to handle very high-voltage pulses, so it can provide protection for applications where a regular TVS diode may not be suitable. And finally, it has the auto-restart feature, which makes it an even more attractive option for high-density low-voltage applications.In conclusion, the BZW04-20-E3/73 diode provides a great option for low-voltage applications, where its small size and customizable peak clamping voltage make it an ideal choice. It is designed to handle very high-voltage pulses, giving it greater protection than a regular TVS diode, and its auto-restart feature makes it a great solution for applications with high-density electronic systems.

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