SMBJ28A-TP Circuit Protection

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Type:	Zener
Unidirectional Channels:	1
Voltage - Reverse Standoff (Typ):	28V
Voltage - Breakdown (Min):	31.1V
Voltage - Clamping (Max) @ Ipp:	45.4V
Current - Peak Pulse (10/1000µs):	13.2A
Power - Peak Pulse:	600W
Power Line Protection:	No
Applications:	General Purpose
Capacitance @ Frequency:	--
Operating Temperature:	-55°C ~ 175°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	DO-214AA, SMB
Supplier Device Package:	DO-214AA (SMB)
Base Part Number:	SMBJ

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• Introduction

The SMBJ28A-TP TVS diode is a medium power unidirectional transient voltage suppression (TVS) diode that is designed to provide transient over-voltage protection. It features an adjustable standoff voltage range from 28V to 48V and can dissipate energy up to 600W in applications such as ESD and surge protection. The small size and low capacitance also make it ideal for use in space-constrained and high-speed applications.

• Application Fields

The SMBJ28A-TP is suitable for data lines protection in automotive electronics, medical devices, telecommunication systems, industrial control, and other electronic equipment. It provides electrostatic discharge and surge protection of high-speed signaling lines, such as USB and HDMI ports.

• Working Principle

The SMBJ28A-TP TVS diode is designed with a Zener diode constructed using a silicon junction. When the voltage at the diode passes the Zener breakdown voltage, the diode switches on and the energy is quickly dissipated. The device has a very fast response time, allowing high-speed signals to be protected from a transient voltage spike.The Zener breakdown voltage is adjustable. This is achieved by the device\'s three leads: the anode, cathode, and a third additional lead, which is used to adjust the breakdown voltage. This voltage adjustment feature allows the user to select the optimum protection voltage for their particular application.

• Conclusion

The SMBJ28A-TP TVS diode is an ideal solution for surge and ESD protection in high-speed and space-constrained applications. It provides up to 600W of transient power dissipation and a fast response time of less than 1 nanosecond. Its adjustable Zener breakdown voltage also allows users to select the exact protection voltage for their application. This makes it an ideal solution for data line protection in automotive electronics, medical devices, telecommunication systems, industrial control, and other electronic equipment.

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