SMBJ45CA-E3/1

Current - Peak Pulse (10/1000µs):	8.3A
Base Part Number:	SMBJ
Supplier Device Package:	DO-214AA (SMBJ)
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	600W
Series:	TransZorb®
Voltage - Clamping (Max) @ Ipp:	72.7V
Voltage - Breakdown (Min):	50V
Voltage - Reverse Standoff (Typ):	45V
Bidirectional Channels:	1
Type:	Zener
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Transient voltage suppressors, also known as TVSs, are devices used to protect electronic systems from the potentially damaging effects of voltage spikes. The SMBJ45CA-E3/1 is a TVS diode that belongs to the SMBJ Series of Uni-Directional and Bi-Directional TVS Diodes.

Application Field

SMBJ45CA-E3/1 is designed for portable or battery powered products and other general purpose applications. It can be used in DC power systems, audio, automotive, and communication systems, as well as in the protection of sensitive microprocessor ICs. The TVS device can be operated over a wide operating temperature range, from -40°C to +125°C.

Working Principle

The SMBJ45CA-E3/1 diode is capable of protecting against voltage spikes of as high as 40 Volts. The device works by absorbing the spike energy and clamping the voltage to a safe level. It is also capable of withstanding repetitive ESD strikes. The bi-directional protection is achieved by a Zener diode and a crowbar circuit connected in parallel. When a negative or positive spike occurs, the Zener diode will get reverse-biased and the crowbar will activate, diverting the spike current to the TVS diode. The device will then absorb and dissipate the energy during the spike. The device also offers additional advantages such as low leakage current and fast response time. Its Glass Passivated Chip Junction ensures long-term reliability and stability.

Conclusion

The SMBJ45CA-E3/1 is a versatile and reliable TVS device that is designed for a wide range of applications. It is capable of protecting against voltage spikes of up to 40 Volts and can operate over a wide temperature range. The device also offers additional advantages such as low leakage current and fast response time. Overall, the SMBJ45CA-E3/1 is an ideal solution for protecting portable and battery powered products.

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