DESCRIPTION

The R251.250T1 is a PICO® II very fast-acting subminiature fuse designed to provide reliable overcurrent protection in space-saving applications. It is rated for 1/4 ampere at 125 VDC with a nominal cold resistance of 0.665 ohms and a nominal melting I²t of 0.0106 A² seconds. The fuse features an encapsulated epoxy-coated body with solder-coated copper wire leads, operates across a temperature range of -55°C to 125°C, and meets MIL-STD-202 standards for shock (100 G's peak for 6 milliseconds) and vibration (10–55 Hz and 55–2000 Hz at 10 G's peak). It has an interrupting rating of 300 amperes at 125 VDC and is recognized by Underwriters Laboratories (UL E10480) and certified by CSA (LR 29862). This fuse is ideal for circuit protection in compact electronic equipment, aerospace systems, and military applications where fast response and reliable performance are critical.