3KP17A

Voltage - Clamping (Max) @ Ipp:	27.6V
Supplier Device Package:	P600
Package / Case:	P600, 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)
Current - Peak Pulse (10/1000µs):	108.7A
Series:	3KP
Voltage - Breakdown (Min):	18.9V
Voltage - Reverse Standoff (Typ):	17V
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Part Status:	Obsolete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 provide over-voltage protection in various circuits, particularly in the computer and information industries. The 3KP17A is a type of semiconductor device that provides effective protection from overvoltages and transients that could damage electrical systems. It is an integrated part – packaged in a small, surface-mount, plastic envelope.

Component

The 3KP17A consists of a surge protective diode (SPD) and an ESD protection circuit. The SPD consists of an integrated Bidirectional TVS (Transient Voltage Suppressor), and the ESD protection circuit is composed of three back-to-back diodes. The TVS component is a zener diode that will become reverse-biased with a low turn-on voltage and a high turn-on current.

Performance

The 3KP17A is a low capacitance device, meaning it has a low equivalent capacitance between the drain and source. This low capacitance is desirable for AC signals because it reduces signal distortion. It also helps reduce crosstalk, which is caused by capacitive coupling of signals from adjacent traces. The device also has a fast response time. It can turn on in less than 10 ns and respond to transient voltages in micro seconds. The device is rated for up to 17.5V and can dissipate up to 100W of energy.

Application Field and Working Principle

The 3KP17A is used as part of surge protection circuits, typically in computers and other information systems. It is commonly used in Ethernet ports, USB ports, and parallel port connections. It can also be used in audio and video systems, automotive systems, and other systems where over-voltage protection is needed.The working principle of the 3KP17A is simple. The TVS part of the device senses a surge or transient voltage and turns on, conducting the excessive current away from sensitive components and out to ground. The ESD protection circuit provides an additional level of protection, quickly clamping any voltage spikes that are below the TVS turn-on voltage.

Conclusion

The 3KP17A is a versatile surge protection device that provides effective protection through its low capacitance design. It is usually used in Ethernet ports, USB ports, and other connections to protect against transient voltage surges and electrostatic discharge. By quickly turning on and dissipating excessive energy, the 3KP17A can save sensitive components from damage.

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