SMBJ17CAHE3/5B

Current - Peak Pulse (10/1000µs):	21.7A
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:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	600W
Series:	Automotive, AEC-Q101, TransZorb®
Voltage - Clamping (Max) @ Ipp:	27.6V
Voltage - Breakdown (Min):	18.9V
Voltage - Reverse Standoff (Typ):	17V
Bidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

TVS (transient voltage suppressor) diodes are specialized devices used for the protection of sensitive electronic devices from electrical overstress such as electrostatic discharge (ESD) and transient voltage. They are complementary to other protective solutions like TVS, MOV and fuse. The SMBJ17CAHE3/5b is one of the latest and most advanced TVS diodes on the market.

Applications

The SMBJ17CAHE3/5b is designed to provide fast, reliable and robust solution for protecting various types of sensitive electronic components in a compact package. It is suitable for applications in industrial, military, hospital, IT and telecommunications infrastructure. It can be used in the protection of power supplies, DC-DC converters, solid state relays, battery chargers, and wide voltage range of sensitive electronics such as microcontrollers, data acquisition systems, and audio systems.

Working Principle

The SMBJ17CAHE3/5b is a bidirectional TVS diode, which means it has a common anode (terminal) connected to the power and a pair of equivalent cathodes connected to the circuits being protected. The SMBJ17CAHE3/5b has two stages of protection, Absorption and Clamping. In the Absorption stage, a short high-voltage electrical impulse is absorbed and dissipated into the impedance of a power dissipative layer of the diode. This layer absorbs peaks above the maximum operational voltage of the circuit but below the breakdown voltage of the diode. The Clamping stage provides a rapid clamping action which limits the final voltage to a safe level by letting the current flow into the diode’s reverse bias junction.

Benefits

The SMBJ17CAHE3/5b has some major benefits that make it stand out in the market. It has ultra-low leakage current of just 0.1nA and is capable of handling transients up to 17A. It has a low junction capacitance of 1.1pF for low EMI interference. It is designed to be very robust and highly reliable with a long life expectancy of 10k cycles. It is RoHS compliant and UL certified for extra reliability. It is also UL tested for low power consumption.

Conclusion

The SMBJ17CAHE3/5b is an advanced TVS diode designed to protect sensitive electronic components in a variety of applications. It offers fast, reliable and robust protection and its ultra-low leakage current, low junction capacitance, and RoHS compliance make it a great choice for industrial, military, IT and telecommunications applications.

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