3KP43A-TP Circuit Protection

Current - Peak Pulse (10/1000µs):	--
Base Part Number:	3KP
Supplier Device Package:	R-6
Package / Case:	R6, Axial
Mounting Type:	Through Hole
Operating Temperature:	-55°C ~ 175°C (TJ)
Capacitance @ Frequency:	--
Applications:	General Purpose
Power Line Protection:	No
Power - Peak Pulse:	3000W (3kW)
Series:	--
Voltage - Clamping (Max) @ Ipp:	69.4V
Voltage - Breakdown (Min):	47.8V
Voltage - Reverse Standoff (Typ):	43V
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, also known as transient voltage suppressor diodes, are semiconductor components used to protect electronic circuits from sudden and short voltage surges or spikes. A 3KP43A-TP is a type of TVS-Diode known for its high surge capability and excellent clamping performance. This article discusses the application field and working principle of a 3KP43A-TP TVS-Diode.Application Field: A 3KP43A-TP TVS-Diode is ideal for protecting electronic circuits from transient over-voltage conditions, such as those caused by electrostatic discharge (ESD). The diode also provides protection from fast electrical transients such as lightning, as well as from induced high-voltage line transients. These diodes are typically used in applications requiring both data and signal line protection. For example, the 3KP43A-TP is commonly used in automotive electronic systems, such as the engine control module, on-board diagnostics system, door locks, and airbags. In addition, they are used in industrial and military applications, providing protection for a wide variety of circuits.Working Principle: The 3KP43A-TP TVS-Diode works by diverting the excess current away from the protected circuit. It accomplishes this by creating a low impedance path between two terminals. This path is created when the diode is subjected to an over-voltage condition, breaking down the physical characteristics of the junction and allowing current to flow between the two terminals.Once the over-voltage condition has passed, the diode quickly returns to its normal ‘on’ state, allowing normal operation of the protected circuit. The 3KP43A-TP TVS-Diode is designed to absorb extremely high surge currents, up to 60 amps, while clamped at a nominal voltage of 33.4 volts.Conclusion: The 3KP43A-TP TVS-Diode is a semiconductor component specifically designed to protect electronic circuits from sudden and short voltage surges or spikes. It is ideal for automotive, industrial, and military applications that require both data and signal line protection. The diode creates a low impedance path when subjected to an over-voltage condition, diverting the excess current away from the protected circuit, and quickly returns to its ‘on’ state afterward. The diode is designed to absorb extremely high surge currents, up to 60 amps, while clamped at a nominal voltage of 33.4 volts.

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