The BK/GDA-500MA is a fast-acting ceramic tube fuse designed for circuit protection in electronic applications. It features a 5mm x 20mm physical size with nickel-plated brass endcap construction and is rated for 500mA at 250V AC with an interrupting capacity of 1500 amps. The fuse exhibits a typical DC resistance of 0.460O and a typical voltage drop of 1050mV at rated current, with a typical DC melting current of 0.038 amps. Designed to IEC 60127-2 standards and carrying multiple agency approvals including UL, CSA, Semko, IMQ, and CCC, this fuse is ideal for protecting sensitive electronic circuits in consumer electronics, industrial equipment, and telecommunications applications where reliable overcurrent protection is essential.