1.5KA8.2AHE3/73

Voltage - Clamping (Max) @ Ipp:	12.1V
Supplier Device Package:	1.5KA
Package / Case:	DO-201AA, DO-27, Axial
Mounting Type:	Through Hole
Operating Temperature:	-65°C ~ 185°C (TJ)
Capacitance @ Frequency:	--
Applications:	Automotive
Power Line Protection:	No
Power - Peak Pulse:	1500W (1.5kW)
Current - Peak Pulse (10/1000µs):	124A
Series:	Automotive, AEC-Q101, PAR®
Voltage - Breakdown (Min):	7.79V
Voltage - Reverse Standoff (Typ):	7.02V
Unidirectional Channels:	1
Type:	Zener
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Box (TB)

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TVS - Diodes

TVS diodes are often used in the protection of sensitive electronic components against electrical overvoltage or transient voltage. These components may include microprocessors, integrated circuits, data processing equipment, and other sensitive electronic devices. The TVS diode is designed to absorb the potentially damaging energy of an electrical transient, and divert it away from the device to which it is connected.A TVS diode is a type of Zener diode that is designed to operate in reverse bias. It is usually made of a semiconducting material such as silicon, with a PN junction formed by doping two materials with a different conductivity type. The PN junction is the area of the semiconductor material where an electrical current can flow. When the current exceeds the rated breakdown voltage of the diode, the PN junction conducts current in the reverse direction.When a transient voltage pulse is applied to a device with a connected TVS diode, the diode will conduct current in the reverse direction. This diverts the energy of the transient away from the device and supplies it to the diode, which is designed to safely dissipate the energy.TVS diodes are available in various packages, primarily to allow different breakdown voltages to be used with various types of devices. They can also be used in the protection of power supplies from voltage spikes, and for protection against electrostatic discharge (ESD) in sensitive equipment.The choice of TVS diode size and manufacturer is an important consideration. The selection of the diode determines the clamping voltage that will be associated with the device. It is important to select a diode with an appropriate breakdown voltage for the application, as this will determine how effectively it will provide protection against overvoltage.The breakdown voltage of a diode is typically given as a multiple of the working voltage. For example, if a diode is given a breakdown voltage of 6V, it would allow the device it is connected to safely operate at up to 6V above its working voltage. It is also important to select a diode that can clamp the voltage at a level that will not cause damage to the connected device.When designing circuits with TVS diodes, it is important to pay attention to the current handling capacity of the diode. The current rating of the diode will determine the speed at which it can clamp the voltage to its breakdown voltage. A diode with a higher current rating will be able to clamp voltage more quickly, providing faster protection.It is also important to keep in mind that TVS diodes are temperature sensitive, and the breakdown voltage may change with temperature. It is important to select a diode with a breakdown voltage that remains stable within the operating temperature range of the device.In conclusion, TVS diodes are an important component for protecting sensitive electronic devices against overvoltage and ESD. By selecting the correct diode for the application, it is possible to ensure that the device will be adequately protected against transient voltage without sacrificing its performance or reliability.

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