Datasheet for the 40TPS08, a 204 KB PDF filed as a schematic. Parts in the 40TPS series are thyristors used for phase control and inrush limiting, often found in larger power supplies, UPS units and motor drives; the 08 suffix marks a lower voltage grade than the 16 version. Before replacing one, confirm the printed marking and check the gate trigger figures and pinout in this document, since tab and lead assignments decide how the device must be oriented on the heatsink.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
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