MF-NSMF125-2 is a PTC resettable fuse from Bourns' MF-NSMF series designed for overcurrent and fault protection in compact 1206 surface mount applications. This device features a hold current (Ihold) of 1.25 A at 23°C with a trip current (Itrip) of 2.50 A, enabling fast response to fault events while maintaining low profile design. The fuse operates across a temperature range of -40°C to +85°C with a maximum device surface temperature of 125°C in the tripped state, and is compliant with AEC-Q200 Rev-C automotive qualification standards and RoHS directives. It is halogen-free and features a symmetrical design with low resistance characteristics, making it ideal for USB port protection, HDMI source protection, mobile device battery and port protection, and automotive electronic control modules. The device is supplied in tape and reel packaging (3000 pcs per reel) and is compatible with both Pb and Pb-free solder reflow profiles.