The STEVAL-SCR001V1 is a low cost evaluation board for testing ST inrush current limitation solutions. Based on an analog control circuit with only discrete components, it offers a compact and reliable alternative to relays to bypass inrush current limiting resistors in power converters. Its drive circuit is self-synchronized to the AC line. Working in pulsed mode, it allows low gate drive consumption and no SCR reverse losses. Additionally, the 50 mA SCR TN5015H-6G provides better immunity to Electrical Fast Transients (EFT). The power supply of the circuit can be created from a secondary winding of a PFC or an auxiliary power supply used to drive transistor and power the system MCU. With no adjustment needed when 12 V unregulated power is supplied, and only 5 wires to connect, this board can be easily implemented on existing PFC or fly-back converters. It is suitable for applications with peak current up to 5 A (at 60 °C ambient temperature) https://elecena.pl/product/14287680/steval-scr001v1-inrush-current-solution-with-bypass-scr 2018-03-27 https://elecena.pl/product/14287680/steval-scr001v1-inrush-current-solution-with-bypass-scr 2020-06-05 https://elecena.pl/product/14287680/steval-scr001v1-inrush-current-solution-with-bypass-scr 2021-04-02 https://elecena.pl/product/14287680/steval-scr001v1-inrush-current-solution-with-bypass-scr 2022-06-11 https://elecena.pl/product/14287680/steval-scr001v1-inrush-current-solution-with-bypass-scr 2022-06-24 https://elecena.pl/product/14287680/steval-scr001v1-inrush-current-solution-with-bypass-scr 2023-03-26 https://elecena.pl/product/14287680/steval-scr001v1-inrush-current-solution-with-bypass-scr 2025-06-27