MCD56-18IO8B

Current - On State (It (RMS)) (Max):	100A
Base Part Number:	MC*56
Package / Case:	TO-240AA
Mounting Type:	Chassis Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Current - Hold (Ih) (Max):	200mA
Current - Non Rep. Surge 50, 60Hz (Itsm):	1500A, 1600A
Current - Gate Trigger (Igt) (Max):	100mA
Voltage - Gate Trigger (Vgt) (Max):	1.5V
Series:	--
Current - On State (It (AV)) (Max):	64A
Voltage - Off State:	1.8kV
Number of SCRs, Diodes:	1 SCR, 1 Diode
Structure:	Series Connection - SCR/Diode
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Thyristors - SCRs - Modules

 The MCD56-18IO8B module is an example of a thyristor and part of an industrial rated SCR (silicon-controlled rectifier) module. This module is designed for high-voltage, high-current applications in industrial and consumer electronics.A thyristor is a three-terminal solid-state semiconductor device composed of four layers of alternating N and P-type materials. The central layer is referred to as the “Gate” and is used to control the switch on and off of the device.The MCD56-18IO8B employs four SCR legs to increase the current handling capability to 18 Amps and the module is able to operate at up to 600Vrms. This makes it well suited for applications such as motor control, lamp dimming and lighting control.The MCD56-18IO8B is a zero-crossing device which means that the device is triggered into conduction when the voltage transitions from a positive to a negative state. The Gate voltage is supplied by a current transformer circuit comprising a pair of four CBT resistors connected from the Gate to the collector.When the four SCR legs are triggered into conduction, current flows from the collector to the Emitter. The MCD56-18IO8B also contains a heatsink to dissipate the heat generated by the on-state current. The heatsink contains a thermal cutoff switch which disconnects the power to the SCR if the temperature rises above a predetermined level.The MCD56-18IO8B is manufactured using UL approved components and is fully tested and certified in accordance with UL508A safety standards. This ensures that the module is capable of withstanding high voltage and current without fail.In summary, the MCD56-18IO8B module is a high-power and high-voltage SCR module which is especially suited for controlling motors, lamps, and lighting. Its versatile design allows it to be used in a variety of industrial and consumer applications. The UL approved components and comprehensive safety tests ensure that the module is capable of withstanding extreme conditions.

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