MCR12DCMT4

Series:	--
Packaging:	Cut Tape (CT)
Part Status:	Obsolete
Voltage - Off State:	600V
Voltage - Gate Trigger (Vgt) (Max):	1V
Current - Gate Trigger (Igt) (Max):	20mA
Voltage - On State (Vtm) (Max):	1.9V
Current - On State (It (AV)) (Max):	7.8A
Current - On State (It (RMS)) (Max):	12A
Current - Hold (Ih) (Max):	40mA
Current - Off State (Max):	10µA
Current - Non Rep. Surge 50, 60Hz (Itsm):	100A @ 60Hz
SCR Type:	Standard Recovery
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	TO-252-3, DPak (2 Leads + Tab), SC-63
Supplier Device Package:	DPAK
Base Part Number:	MCR12

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Thyristors - SCRs

MCR12DCMT4 Application Field and Working Principle

Thyristors are a class of semi-conductor device and are the most widely used of the switching devices with no moving parts. They are also known as thyristor switches or SCRs, or silicon control rectifiers. The MCR12DCMT4 is a popular model of SCR and its application field and working principle will be discussed below.

Application Field

The MCR12DCMT4 has three distinct applications and is used in AC and DC switching. It is used in power control systems and can be used to switch large currents at high voltages. It is also used in motor speeds and control, as well as in computers and telecommunications equipment. It is often used in rectifiers and is a highly efficient form of heat transfer in the electronics industry.

Working Principle

The MCR12DCMT4 works by controlling the current between two electrodes that are connected in series and operate in a closed loop. It uses a semiconductor switch to regulate the current and is capable of operating as a switch at high speeds. The MCR12DCMT4 has two terminals, the anode and the cathode, with the anode being the positive electrode and the cathode the negative one. The anode has to be positive when a current is applied to it, or it will not activate the MCR12DCMT4. When the anode is positive, the current flow is turned on and the SCR will allow a current to pass through it. The current will flow directly through the device until the SCR is turned off by a trigger voltage, which is applied via the gate terminal. This trigger voltage will cause the MCR12DCMT4’s switch to open and the current flow will be stopped until the flow is turned back on with a new positive voltage applied to the anode. The MCR12DCMT4 can also be triggered by current, as opposed to voltage. This is done by applying a second current pulse to the gate terminal which will cause the SCR to switch on and off. The trigger current has to be higher than the anode current, otherwise the MCR12DCMT4 will remain off.

Conclusion

The MCR12DCMT4 is a popular model of SCR and is used in many applications ranging from power control systems to rectifiers. It works by controlling the current between two electrodes which are connected in series, using a semiconductor switch to regulate the current flow. The MCR12DCMT4 is also capable of being triggered by current as well as by voltage.

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