3KP36A-B

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TVS (Transient Voltage Suppressors) diodes provide protection to electronic circuits from voltage spikes and ESD induced transients. The 3KP36A-B is a unidirectional version of the 3KP series, offering superior protection from unwanted transients and ESD. It can survive 1500 W peak pulse power on 10/1000 μs waveforms as well as 1000 V peak pulse voltage on 8/20 μs waveforms.

3KP36A-B Application Field & Working Principle

The 3KP36A-B is used to protect a variety of sensitive electronic circuits from transients and ESD, especially in automotive, computers, industrial, data and communication, consumer electronics and home appliances. It is specifically designed to protect voltage sensitive components like microprocessors, ASICs, rectifiers, FETs and other active devices.

The 3KP36A-B is a unidirectional configuration of TVS diode. This kind of diode consists of two monolithically integrated Thyristors, also known as “silicon-controlled rectifiers” (SCR). The SCRs look like rectifiers but have the ability to conduct current in either direction. They are connected in a back-to-back arrangement, with one cathode connected to the anode of the other. This allows the device to be triggered from either polarity.

When a voltage transient or ESD strike, the 3KP36A-B acts as a clamp. Its avalanche breakdown behavior allows it to limit the peak voltage to a safe level. It will conduct a limited amount of current to protect the sensitive electronics from overvoltage damage. Furthermore, its unidirectional configuration prevents leakage current from flowing in both directions.

The 3KP36A-B has a low dynamic capacitance of 16pF, which enables fast response time to transients. Its maximum peak pulse power is rated at 1500W and maximum peak pulse voltage at 1000V. It also has an impressive average junction capacitance of 0.1700 pF. This small capacitance ensures that the device won’t induce any additional ringing or oscillations that can cause more damage.

Additionally, the 3KP36A-B has superior surge and ESD capability. It has an ESD rating of 8kV on the human body model, and 4kV on the machine model. Its surge capability is also impressive, with a surge current rating of 48A (1ms). Furthermore, its operating temperature range of -55 to +125°C allows it to perform consistently in extreme temperatures.

In conclusion, the 3KP36A-B is a highly reliable and compact TVS diode, offering superior protection from voltage transients and ESD. Its unidirectional configuration prevents current flow in the opposite direction, while its low capacitance ensures fast response time. Additionally, its excellent surge and ESD capability allow it to effectively protect sensitive electronics from a wide variety of electrical disturbances.

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