3KASMC13HE3/9AT

Current - Peak Pulse (10/1000µs):	126A
Base Part Number:	3KASMC
Supplier Device Package:	DO-214AB (SMCJ)
Package / Case:	DO-214AB, SMC
Mounting Type:	Surface Mount
Operating Temperature:	-65°C ~ 185°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	3000W (3kW)
Series:	Automotive, AEC-Q101, PAR®
Voltage - Clamping (Max) @ Ipp:	23.8V
Voltage - Breakdown (Min):	14.4V
Voltage - Reverse Standoff (Typ):	13V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

TVS (Transient Voltage Suppressor) diodes are discrete components which are used for protecting other electronic circuits against abrupt, large surge voltages in order to prevent their malfunction or destruction. The 3KASMC13HE3/9AT is a type of TVS diode which was developed by Littelfuse and has many similar features to the commonly used SMC series. It is a bidirectional line of diode that is specifically used to protect signal and data lines from normal voltage transients as well as Electrostatic Discharge (ESD).

Application Field of 3KASMC13HE3/9AT

The 3KASMC13HE3/9AT is very suitable for protecting data lines such as I2C,USART,CAN,USB,LAN,LVDS,etc. due to its small footprint, low capacitance and low clamping voltage. The device is widely used in portable, automotive, or industrial electronics applications where electric disconnect/shorts must be prevented, like smart phones, digital cameras, GPS, tablets, medical devices, automotive ECUs, home appliances, etc.

Working Principle of 3KASMC13HE3/9AT

The 3KASMC13HE3/9AT is a bidirectional, low capacitance, low clamping voltage TVS diode. When the voltage transients on either end of the diode exceed the breakdown voltage, VBR, of the 3KASMC13HE3/9AT, the device becomes conductive. That means the block voltage will clamp to the VBR and keep the voltage transients from passing through to the protected circuit. When the transient voltage falls below the breakdown voltage, VBR, the device will stop conducting and return back to an off state.

Conclusion

The 3KASMC13HE3/9AT is an important TVS diode which can protect signal and data lines from voltage transients and ESD. It has a small footprint, low capacitance and low clamping voltage which make it suitable for a range of applications like smart phones, digital cameras, GPS, tablets, medical devices, automotive ECUs,and home appliances. As a bidirectional line of diode, it can work based on breakdown voltage, VBR, and it will clamp the voltage transients when exceeding the VBR and stop conducting when voltage transients fall below the breakdown voltage.

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