The FSMD025-1206-R is a surface mount PTC resettable fuse from the FSMD1206 series. It is designed for circuit protection applications and provides overcurrent protection in electronic circuits. With a size of 0.128" L x 0.065" W (3.25mm x 1.65mm) and a thickness of 0.030" (0.75mm), this fuse is compact and suitable for space-constrained designs. It has a maximum voltage rating of 16V and a maximum current rating of 100 A. The current hold (Ih) is 250 mA and the current trip (It) is 500 mA. The time to trip is 80 ms. The FSMD025-1206-R is mounted using surface mount technology and comes in a 1206 (3216 Metric) concave package. It operates in a temperature range of -40°C to 85°C. The initial resistance (Ri) is 550 mOhms and the post trip resistance (R1) is 2.3 Ohms. This PTC resettable fuse is approved by cUL, TUV, and UL.