DESCRIPTION

CMF-SD50A-10-2 is a telecom-grade CPTC (Ceramic Positive Temperature Coefficient) resettable fuse featuring two resistance-matched PTCs in a ceramic housing, designed for secondary overcurrent protection in telecommunications equipment. The device has a rated resistance of 50 O at 25°C with a tight ±10% tolerance and resistance matching of ±0.5 O between channels. It operates at a rated voltage of 230 VAC with a hold current of 0.090 A and trip current of 0.190 A at 25°C, providing a maximum current (Imax) of 3 A at 230 VAC with a trip time of less than 0.1 seconds. The product is RoHS compliant and housed in a reduced-footprint surface-mount dual package (CMF-SD35A/CMF-SD50A form factor) with coplanarity of 0.15 mm, making it suitable for compact PCB designs. Common applications include Customer Premise Equipment (CPE), Central Office (CO), and access equipment where reliable overcurrent protection and fast response times are essential.