MF-S200 is a PTC resettable fuse designed to provide overcurrent protection with a 125 °C trip temperature, ideal for rechargeable battery pack applications. The device features a maximum voltage rating of 30 V, a hold current of 2.00 A at 23 °C, and a trip current of 4.40 A, with an initial resistance of 0.030 to 0.060 O and post-trip resistance of 0.080 O maximum. It exhibits very low internal resistance, weldable nickel terminals, and is fully compatible with current industry standards, offering reliable protection with no arcing or burning during trip cycles. The MF-S200 is RoHS compliant, agency recognized (cUS), and suitable for battery management systems requiring resettable overcurrent protection with thermal derating capabilities across the operating temperature range of -40 °C to +85 °C.