Voltage - Clamping (Max) @ Ipp:	15.6V
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
Current - Peak Pulse (10/1000µs):	39.1A
Series:	P6SMB
Voltage - Breakdown (Min):	10.5V
Voltage - Reverse Standoff (Typ):	9.4V
Unidirectional 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 - Diodes protect electronic components from overvoltage transients. They are semiconductor devices specifically designed for this purpose. P6SMB11A is one type of TVS diode, which is a transient voltage suppressor diodes typically employed in high-frequency, low-capacitance applications. It is a responding type diode composed of two diodes separate in series connection. It offers a unidirectional peak pulse handling capability of 12A (8/20µs).

Application Field of P6SMB11A

A predominant application of P6SMB11A is the protection of low-voltage circuits, such as I/O lines, from high-voltage transients caused by electrostatic discharge (ESD). It also finds its applications in telecommunications, especially in wireless networks which face a higher chance of ESD damage as many users are mobile. In addition to that, it can also serve as a main protection device in other communication networks. Other consumer electronic product lines, like mobile devices, digital cameras, as well as computers and laptops, also use it for protection.

Working Principle of P6SMB11A

The P6SMB11A works on the principle of a breakdown voltage and unidirectional voltage clamp. This occurs because of an intrinsic voltage drop developed across the junction that sets an upper limit to the voltage appearing across the protected components. When the understated voltage is exceeded, a very low resistance shunt path is formed by the diode, which allows the current to flow freely in the shunt direction. In an ESD event, the lower breakdown voltage of the TVS diode is reached rapidly, allowing a current path to occur between the ESD pulses and the protected device. This current path limits the voltage seen on the protected device and prevents potential damage.

Conclusion

In conclusion, P6SMB11A is one type of TVS diode which has a responding type diode and enjoys the applications in many areas, especially in consumer electronics. It possesses a unidirectional peak pulse handling capability of 12A (8/20µs). It works on the principle of a breakdown voltage and unidirectional voltage clamp. With its advantages, P6SMB11A has been popularly used for providing protection against high-voltage transients in I/O lines and telecommunications.

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