This post explains for the Thyristor TYN-604.

The Part Number is TYN604.

The function of this semiconductor is 600V, 4A, SCR.

The package is TO-220AB Type

Manufacturer: ST Microelectronics

Images

Description

The TYN604 is 600V, 4A, Thyristor, SCR.

SCRs are widely used in power control and regulation applications, such as lighting and heating control, motor control, battery chargers, and AC-to-DC power conversion, due to their high voltage and current handling capabilities, fast switching speeds, and high reliability.

The TYN204 ~ TYN1004 Family of silicon controlled rectifiers uses a high performance glass passivated technology. This general purpose Family of silicon controlled rectifiers is designed for power supplies up to 400Hz on resisitive or inductive load.

 

Features

1. High Surge capability

2. High On-state current

3. High Stability and reliability

 

TYN604 PDF Datasheet

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Part Number: ESM740G, ESM740 ( = TR03-400T )

Function: 300V, 3A, Thyristor

Package: TO-202 Type

Manufacturer: ST Thomson, STMicroelectronics

Images:

 

Description

ESM740G is 300V, 3A, Thyristor, SCR. SCR stands for “Silicon-Controlled Rectifier.” It is a type of semiconductor device commonly used in electronics and electrical engineering for switching and controlling high-voltage and high-current applications. SCR is also sometimes referred to as a thyristor, and it is one of the most widely used thyristor devices.

The Thyristor brings the best compromise between a fast turn off time and a low gate trigger current for applications where fast switching and sensitive control is requested.

1. Unidirectional Conduction: Thyristors allow current to flow in only one direction, making them suitable for rectifying AC (alternating current) into DC (direct current).

2. Controlled Turn-On: Thyristors have a gate terminal that, when triggered with a sufficient voltage or current, allows them to switch from an off state to an on state. Once turned on, they remain in the conducting state until the current through them drops below a certain threshold or until a reverse voltage is applied.

3. High Voltage and Current Handling: Thyristors are designed to handle high voltages and currents, making them suitable for power control applications.

[…]

 

 

ESM740G PDF Datasheet

 

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