TYN608 is a standard 8A SCR available in a TO-220AB package that can be used to control medium power AC/DC loads and can handle high current surges.

Specifications

• Maximum anode-cathode voltage (off state): 600V


• Maximum RMS current: 8A


• Pulsed DC current: 100A


• Gate trigger current: 15mA max.


• Holding current: 30mA max.


• Latching current: 70mA max.


• Available in the TO-220AB package.

TYN608 SCR Overview

The TYN608 is a medium power SCR used in power circuits. SCRs are latching diodes controlled by a small current through the gate terminal. Despite being specified for 100A pulsed, a deeper look into the datasheet tells us that higher current peaks are possible.

How to use the TYN608 SCR

One very useful circuit that can be made using an SCR is an inrush current limiter. Off-line switching supplies have a bridge rectifier at the input which converts AC to DC and feeds a large electrolytic filter capacitor. When the capacitor is discharged and the supply is connected to the mains, a large inrush current flows through the rectifier to charge the capacitor, which could lead to component failure.

Applications

• Motor control circuits


• Voltage regulation


• Inrush current limiting


• Capacitive discharge ignition


• Crowbar Protection