Siemens 6ES7195-0EA00-0XA0 ASIC FOCSI, -40 to 85 °C

The Siemens 6ES7195-0EA00-0XA0 is a dedicated ASIC (FOCSI – Fiber Optic Controller for Siemens) for preprocessing PROFIBUS fiber optic signals. It operates on a 3.3 V DC supply, handles transmission rates up to 12 Mbit/s, and is housed in a 44-pin TQFP package. Temperature range spans -40 °C to 85 °C, so it suits both cold warehouses and warm cabinet environments. Power dissipation is low at 0.75 W, which keeps thermal management simple on a crowded board. Given its role as a Medium Management Unit for PROFIBUS FO, this ASIC handles the signal conditioning and framing that frees the main CPU from byte-level timing. No external firmware is required; the logic is fixed in silicon. If your BOM calls for this exact order code, the fit is straightforward – a surface-mount digital IC on the PROFIBUS FO interface board.