BT169G-MQP

Current - On State (It (RMS)) (Max):	800mA
Supplier Device Package:	TO-92-3
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Mounting Type:	Through Hole
Operating Temperature:	125°C (TJ)
SCR Type:	Sensitive Gate
Current - Non Rep. Surge 50, 60Hz (Itsm):	9A, 10A
Current - Off State (Max):	100µA
Current - Hold (Ih) (Max):	5mA
Series:	--
Current - On State (It (AV)) (Max):	500mA
Voltage - On State (Vtm) (Max):	1.7V
Current - Gate Trigger (Igt) (Max):	60µA
Voltage - Gate Trigger (Vgt) (Max):	800mV
Voltage - Off State:	600V
Part Status:	Active
Packaging:	Bulk

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Introduction

Thyristors - SCRs are a popular and widely used type of semiconductor power switching device. The BT169G-MQP is one of the most widely used SCRs in application areas requiring high power ratings. It is widely used in power supplies and lighting control applications, as well as microwave ovens, electric heaters and domestic appliances. This article will explain the application field and working principle of the BT169G-MQP.

Application Field

The BT169G-MQP is a medium power SCR. It is suitable for the control of power up to 600V and 2A, which makes it suitable for a wide range of applications. It is used in high power switching applications such as motor drives, lighting control, heater and motor control, process control, and power supplies. It is also used in commercial and industrial applications, where high power switching requirements exist.

Working Principle

The BT169G-MQP is a thyristor based power switching device. A thyristor is a semiconductor device made up of two p-n junctions placed together in a bridge circuit. When a voltage is applied across the two junctions, an electric current can start flowing through the circuit. This process is known as "turning on" the thyristor. The BT169G-MQP can be turned on by an external voltage or current trigger, or by grounding the gate terminal.Once the thyristor is triggered and turned on, it will remain on until the voltage or current flowing through the circuit drops below a certain level, known as the "latching current". This ensures that the device will remain in its on state, even after the triggering voltage or current has been removed.The BT169G-MQP can also be turned off by an external control signal or by disconnecting the power source. When the thyristor is off, the current will stop flowing through the circuit and the device will no longer be conducting.

Conclusion

The BT169G-MQP is a popular and widely used SCR in applications requiring high power ratings. It can handle a power up to 600V and 2A, and can be controlled with an external trigger or by grounding the gate terminal. When triggered, it will remain turned on until the current flowing through the circuit drops below the latching current, or it can be turned off by an external control signal. This makes it suitable for a wide range of applications.

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