Polymeric PTC resettable fuse, 3.5 A hold, 12 V
The Littelfuse 1206L350/12SLWR is a Polymeric PTC resettable fuse from the POLY-FUSE LoRho series, designed to protect circuits by tripping when current exceeds the hold rating and resetting after the fault clears. Rated for a hold current of 3.5 A (Ih) and a trip current of 7 A (It), it limits fault current up to 50 A at 12 V max, with a typical time to trip of 5 seconds at the trip threshold. The low initial resistance of 3 mOhms (Ri min) and post-trip resistance of 20 mOhms (R1 max) minimize power loss during normal operation, making it suitable for high-current battery or USB power paths.
Surface-mount 1206 concave package, -40 to 85°C
Carries cURus and TUV approvals, confirming compliance with North American and international safety standards for overcurrent protection devices.