BZW04-78 B0G

Voltage - Clamping (Max) @ Ipp:	125V
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
Current - Peak Pulse (10/1000µs):	3.2A
Series:	BZW04
Voltage - Breakdown (Min):	86.5V
Voltage - Reverse Standoff (Typ):	78V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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TVS-Diodes – BZW04-78 B0G Application Field and Working Principle

Transient Voltage Suppression (TVS) diodes are designed specifically for protection against electrical overvoltage events such as electrostatic discharge (ESD) and surges caused by lightning. In addition, they can provide EMI filtering and can be used to protect sensitive electronics, particularly portable or battery-powered devices. The BZW04-78 B0G is a high-speed, low capacitance silicon diode TVS specifically designed for protection against ESD events.

Features

This diode TVS has a breakdown voltage of 5.2V and a low capacitance of 2pF. It has a maximum clamping voltage of 7.2V at the rated current of 15A. The BZW04-78 B0G is designed with a two-layer multilayer structure that integrates a protection diode and a protection resistor. This design provides a higher current handling capability and better ESD protection. Moreover, its high-speed switching characteristics and low lead design make it an ideal choice for portable and battery-powered electronic devices.

Applications

The BZW04-78 B0G is designed to protect sensitive electronics from ESD, EMI, and surges caused by lightning. It is commonly used in mobile phones, laptops and tablet PCs, digital cameras, MP3 players, and other electronic devices. Moreover, it is particularly useful in applications where space is limited, such as in portable devices.

Working Principle

Under normal operating conditions, the BZW04-78 B0G diode TVS works like a normal diode. During transient overvoltage events such as ESD or lightning strikes, the diode switches to a low impedance state and begins conducting current to the ground. This helps to protect the device from damage caused by the overvoltage. The internal resistor limits the peak current and dissipates the energy.

Conclusion

The BZW04-78 B0G is a high-speed, low capacitance TVS diode designed to provide ESD and surge protection to sensitive electronic components. Its high current handling capability and low lead design make it ideal for use in portable and battery-powered devices. It is commonly used in mobile phones, laptops and tablet PCs, digital cameras, and MP3 players. The BZW04-78 B0G is an effective solution for protecting electronics from overvoltage events.

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