VS-ST300C12C0L

Current - On State (It (RMS)) (Max):	1290A
Supplier Device Package:	TO-200AB (E-Puk)
Package / Case:	TO-200AB, E-PUK
Mounting Type:	Chassis Mount
Operating Temperature:	-40°C ~ 125°C
SCR Type:	Standard Recovery
Current - Non Rep. Surge 50, 60Hz (Itsm):	6730A, 7040A
Current - Off State (Max):	50mA
Current - Hold (Ih) (Max):	600mA
Series:	--
Current - On State (It (AV)) (Max):	650A
Voltage - On State (Vtm) (Max):	2.18V
Current - Gate Trigger (Igt) (Max):	200mA
Voltage - Gate Trigger (Vgt) (Max):	3V
Voltage - Off State:	1.2kV
Part Status:	Active
Packaging:	Bulk

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Thyristors - SCRs: VS-ST300C12C0L Application Field and Working Principle

A thyristor is a type of solid state semiconductor device that is used to switch electrical current; Thyristors are commonly referred to as SCRs (silicon control rectifiers). The VS-ST300C12C0L SCR is commonly used in high power, high voltage applications and is available in a TO-247 package.

Application Fields

The VS-ST300C12C0L SCR has a wide range of applications in both commercial and industrial settings. The most common application is as a power switch in high power applications such as power supplies, electric motors, contactors, relays, and in automotive electronics. It is also often used in any application requiring intermittent control of high voltage and/or high power, such as in photovoltaic inverters and welding machines. Additionally, they are used in motor speed control and braking systems, as well as in various switchgear including circuit breakers, transmission lines, and transformers.

Working Principle

The VS-ST300C12C0L SCR is a four-layer device with two PN junctions. It has two gates, a main SCR gate and a reverse polarity gate. The main gate is used to control the device and is an npn transistor that must be connected to a positive voltage in order to turn the SCR on. The reverse polarity gate acts as a protection device and is used to prevent the SCR from becoming damaged due to reversed polarity current, by preventing the current from rising above a certain level.The SCR works by allowing current to flow in only one direction, when the main gate is triggered by a positive voltage, typically 5-20 V depending on the type of SCR. Once triggered, the SCR will turn on and allow current to flow from anode to cathode until the voltage across the SCR drops below the minimum current value, usually 1/2 to 1/3 the trigger voltage. Once the voltage drops below this level, the SCR will turn off.

Conclusion

The VS-ST300C12C0L SCR is a popular choice for high power, high voltage applications due to its versatility and reliability. Its wide range of applications makes it an ideal choice for many projects and its two-layer design allows for both protection and control. The VS-ST300C12C0L SCR is a highly effective device for many electrical and mechanical applications, making it a valuable tool for engineers and technicians.

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