P6SMB150CAHE3/52 Circuit Protection

Current - Peak Pulse (10/1000µs):	2.9A
Base Part Number:	P6SMB
Supplier Device Package:	DO-214AA (SMBJ)
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	600W
Series:	Automotive, AEC-Q101, P6SMB, TransZorb®
Voltage - Clamping (Max) @ Ipp:	207V
Voltage - Breakdown (Min):	143V
Voltage - Reverse Standoff (Typ):	128V
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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TVS - Diodes

TVS diodes are a type of semiconductor that serves as a protection device for electronic equipment from unwanted or overvoltage transients. The P6SMB150CAHE3/52, in particular, is a bidirectional transient voltage suppressor (TVS) diode, designed for surge protection in low-voltage electronic equipment. This device is typically used for overvoltage protection of DC/DC converters, CPU, I/O ports and bus interfaces in both commercial and automotive applications. This article will provide an overview of the P6SMB150CAHE3/52’s application field and working principle in order to provide further insight into TVS diodes.

Applications of the P6SMB150CAHE3/52

The P6SMB150CAHE3/52 is designed for both commercial and automotive applications. This device is suitable for use in automotive power supplies, though some special consideration may be required in order to meet the stringent insulation requirements of the automotive standard. In the commercial sector, the P6SMB150CAHE3/52 is often used for overvoltage protection of DC/DC converters, CPU, I/O ports, and bus interfaces.

The Working Principle of TVS Diodes

TVS diodes work by providing a high impedance path to prevent overvoltage transients from reaching sensitive circuitry. In this way, they can act as either a shunt regulator or a clamping operation. When used as a shunt regulator, the TVS diode shunts a portion of the current away from the protected devices. This allows for a drop in the output voltage to a desirable level. When used as a clamping operation, the TVS diode clamps the output voltage to a desired level by providing a path for excess current. This prevents the excessive voltages from damaging the protected devices. In the case of the P6SMB150CAHE3/52, it is designed for unidirectional operation, meaning it can only provide protection in one direction. This is strengths are optimized for ESD protection, as opposed to protection against higher energy transients, such as lightning events. The P6SMB150CAHE3/52 is rated to provide a maximum of 150V of transient voltage protection across a range of frequencies (up to 1GHz), and is capable of handling up to 85A of peak pulse current. In addition to providing a high-impedance current path, TVS diodes are also designed to have a very low capacitance to minimize the effect of switching noise. This helps prevent interference between different circuits and helps maintain signal integrity.

Conclusion

The P6SMB150CAHE3/52 is a bidirectional transient voltage suppressor diode, designed for surge protection in low-voltage electronic equipment. It is suitable for use in both commercial and automotive applications, and provides a maximum of 150V of transient voltage protection across a range of frequencies (up to 1GHz). Its ability to provide a high-impedance path and low capacitance make it an ideal choice for protecting sensitive electronic circuitry from overvoltage transients.

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