F1857CAH1200

Series:	--
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Structure:	Common Anode - SCR/Diode
Number of SCRs, Diodes:	1 SCR, 1 Diode
Voltage - Off State:	1.2kV
Voltage - Gate Trigger (Vgt) (Max):	3V
Current - Gate Trigger (Igt) (Max):	150mA
Current - Non Rep. Surge 50, 60Hz (Itsm):	1500A @ 60Hz
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Chassis Mount
Package / Case:	Module

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Thyristors - SCRs - Modules: F1857CAH1200 Application Field and Working Principle

Thyristors, also known as Silicon-Controlled Rectifiers (SCRs), are sensitive electronic switches that can be used for various electronic applications. The F1857CAH1200 is a high-power thyristor module containing four SCRs, making it suitable for use in high-power applications such as power switching, motor control, and high voltage rectification. This article will discuss the application field and working principle of the F1857CAH1200 thyristor module.

Application Field of the F1857CAH1200

The F1857CAH1200 is capable of switching high currents up to 100A in either AC or DC applications. This makes it well-suited for controlling high-voltage rectification systems and power switching applications. The F1857CAH1200 can also be used as an AC motor control system, as it is capable of controlling the speed, torque, and acceleration of an AC motor. In addition, the F1857CAH1200 can also be used in static relays and static switches, as it is able to switch both AC and DC loads.

Working Principle of the F1857CAH1200

The F1857CAH1200 is made up of four SCRs, which are the main components of the module. An SCR is a four-layer device, consisting of two P-type (anode) and two N-type (cathode) layers of semiconductor materials. The two layers of P-type material form the SCR’s anode, while the two layers of N-type material form its cathode. In order for current to flow through the SCR, a controlling voltage, or “gate signal”, needs to be applied. This gate signal causes an electric field to be generated in order to turn the SCR on.Once the SCR is turned on, the electric current flowing through the device will continue to flow, even after the gate signal has been removed. This can be beneficial in cases where the SCR needs to switch on periodically, such as in AC motor control systems. The current will remain flowing until the voltage across the SCR drops below its hold current, or until the SCR is triggered again using a gate signal. The F1857CAH1200 also features over-voltage and over-temperature protection, as well as a self-restriction current feature that protects the SCRs from over-current situations. This self-restriction current feature works by reducing the current flow when there is an excessive current present, thus reducing the possibility of damage to the device.

Conclusion

The F1857CAH1200 is a high-power thyristor module containing four SCRs, which makes it well-suited for power switching, motor control, and high voltage rectification applications. The F1857CAH1200 is made up of four SCRs, which need to be triggered using a gate signal in order for current to flow through the device. Once the SCR is turned on, the electric current flowing through the device will continue to flow, even after the gate signal has been removed. The F1857CAH1200 also features a self-restriction current feature that protects the SCRs from over-current situations.

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