3KASMC14HE3/9AT

Current - Peak Pulse (10/1000µs):	116A
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:	25.8V
Voltage - Breakdown (Min):	15.6V
Voltage - Reverse Standoff (Typ):	14V
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Part Status:	Obsolete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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TVS - Diodes, or transient voltage suppressors, are electrical components used in power supplies, automotive circuits, and communication and medical systems to protect against electrical surges. The 3KASMC14HE3/9AT is a three-phase general-purpose Transient Voltage Suppressor (TVS) diode for a wide variety of applications. This article covers the application field and working principle of the 3KASMC14HE3/9AT diode.The 3KASMC14HE3/9AT is specifically engineered for protection in automotive applications, with its low reverse leakage current, low capacitance and a wide current operating range. It is designed for spacing between phases of 9-15V, and an operating temperature of -55 to 125°C, and is compatible with lead-free soldering. Its low surge capability makes it suitable for protection against indirect lightning strikes. The TVS diode is a two-terminal semiconductor device used to protect a low-voltage system against voltage spikes, such as those generated by lightning strikes. It is essentially a diode that acts as a switch, conducting current only above a certain voltage threshold and blocking current below it. This voltage is referred to as the breakdown voltage. TVS diodes are available in different packages, such as unidirectional (single polarity) and bidirectional (dual polarity), and each with different breakdown voltages.The 3KASMC14HE3/9AT diode is unidirectional, with a maximum peak pulse-power rating of 350 Watts per line. It has an average peak pulse power rating of 5 Watts per line at an operating temperature of 85°C. Its standard operating breakdown voltage is 14 volts, and its reverse leakage is less than 0.1 μA at 14V and 25°C. It has a very fast response time of 25ns, and is suitable for a wide range of temperature, making it an ideal choice for automotive applications.The 3KASMC14HE3/9AT diode works by absorbing the excess current of the load and redirecting it to the ground. When the diode is in its OFF state, it acts as an open circuit, allowing current to flow through the diode without any voltage drop. When the voltage across the diode reaches its specified breakdown voltage, it turns ON and conducts the current. This prevents any voltage from exceeding the breakdown voltage, and thus protects the load from voltage surges.In conclusion, the 3KASMC14HE3/9AT diode is an ideal choice for automotive power supplies and other systems requiring protection from voltage spikes. It is designed for single-sided protection, and has a fast response time and low leakages, making it an efficient and reliable component in any system. The breakdown voltage ensures the protection of the load from voltage surges, and its compatibility with lead-free soldering make it easy to assemble in circuits.

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