P6SMB6.8AT3 Circuit Protection

Current - Peak Pulse (10/1000µs):	57A
Base Part Number:	P6SMB
Supplier Device Package:	SMB
Package / Case:	DO-214AA, SMB
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 150°C (TJ)
Capacitance @ Frequency:	2380pF @ 1MHz
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	600W
Series:	Automotive, AEC-Q101
Voltage - Clamping (Max) @ Ipp:	10.5V
Voltage - Breakdown (Min):	6.45V
Voltage - Reverse Standoff (Typ):	5.8V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Cut Tape (CT)

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Introduction

TVS (Transient Voltage Suppressor) diode is an important component in semiconductor manufacturing, it helps in protecting the electronic equipment from transient voltage surges, which could cause severe damage to the electronic devices. The P6SMB6.8AT3 TVS diode is a monolithic surge protector which provides superior transient protection and short circuit protection. The device offers 600W peak pulse power and 350mA peak pulse current, effectively suppressing the overvoltage and overcurrent impulses.

Design and Construction

The P6SMB6.8AT3 TVS diode is constructed with a silicon carbide (SiC) substrate and rate for the operating temperature range of -55°C to +175°C. The device is encapsulated within a small epoxy package which enables it to be used in both automotive and general applications. The device has two leads, one for the drain and the other is the source. The drain lead is active and the source lead is inactive.

Applications

The P6SMB6.8AT3 TVS diode is suitable for industrial, automotive, and general overvoltage and bulk power line surge protection applications. The device provides transient voltage suppression of overvoltage pulse initiators ranging from milliamps (mA) to thousands of amps (A). It can be used for automotive applications, for protection against power surges in the battery system; in industrial applications for protection against transient overvoltage incidents during power loss or brownouts; and in general electrical and electronic systems to protect components and circuits from transient overvoltage.

Working Principle

The P6SMB6.8AT3 TVS diode works by diverting excess current away from sensitive electronics when an overvoltage or bulk power line surge occurs. In operation, the drain lead of the diode is used as the anode and the source lead is used as the cathode. When a transient surge is present, the reverse-biased diode provides a low-resistance path for the current to flow, thus allowing the excess energy to be dissipated. The device can also be used in voltage clamping circuits, where it can limit the voltage above a predetermined threshold.

Conclusion

The P6SMB6.8AT3 is an ideal device for transient voltage and current protection applications. It can be used in industrial, automotive, computer, and general-purpose electronics, protecting the components and circuits from catastrophic failure resulting from transient overvoltage pulses. It provides superior transient protection and short circuit current protection, allowing the safe operation of connected components and circuits.

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