The TR1/6125TD500-R is a time-delay surface mount fuse designed for circuit protection in electronic applications. It is rated for 500 mA at 125V AC and 60V DC, with an AC interrupting rating of 50A at 125VAC and a DC interrupting rating of 50A at 60VDC. The fuse exhibits a DC cold resistance of 0.4025 ohms and a typical voltage drop of 245 mV at rated current, with a typical melting time of 0.716 seconds at 10 times rated current. It satisfies the EIA/IS-722 Standard and is compatible with wave immersion soldering at 260°C for 10 seconds maximum and infrared reflow at 260°C for 30 seconds maximum. This fuse is ideal for protecting sensitive electronic circuits in industrial, consumer, and telecommunications equipment where reliable time-delay protection and surface mount compatibility are required.