The TN1605H-8T from STMicroelectronics is a 16 A/800 V-rated silicon-controlled rectifier (SCR) which can handle a high junction temperature of up to 150°C. It is housed in a compact TO-220AB package.
A combination of attractive features make the TN1605H-8T a valuable basis for robust and compact inrush current-limiting circuits and over-voltage crowbar protection in ac-dc converters:
This SCR is also suitable for ac line load switching, heating resistor controls, solid-state relays, and power bus discharge circuits.
Part Number: STEVAL-SCR002V1
The STEVAL-SCR002V1 board from STMicroelectronics implements a simple and innovative ac-dc front-end circuit which enables designers to perform inrush current limitation in any converter with an input rectifier bridge topology.
Based on a discrete control circuit made of one Z0110MN triac and two STTH110A diodes, the STEVAL-SCR002V1 offers a compact and non-insulated high-voltage driver for a mains-powered silicon-controlled rectifier (SCR). The drive circuit synchronizes the SCR gate signals with the ac line polarity and directly powers the SCR gate from the mains. This operation does not generate reverse losses in the SCRs.
The STEVAL-SCR002V1 solid-state solution offers higher reliability, longer service lifetime, lower EMI, and faster response than electromechanical solutions.
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