An IEC quick-acting chip fuse series, USI 1206, is a universal modular fuse approved according to IEC 60127-4/2. It also bears international approvals by cURus, METI, and CCC. The new fuse series has high melting I²t values, which provide greater withstand against high inrush or pulse currents. Its opening time compares to 1,206 time-delay types, according to UL, in lower overcurrent conditions, but responds quickly to higher overcurrents in the event of a fault condition. Current ratings range from 0.5 to 6.3 A, with voltage ratings of 63 VDC and 32 VAC. The series provides optimal secondary overcurrent protection in power inverters and low-voltage power supplies in a small package (3.2 x 1.6 x 0.6 mm). It is also suitable for protection of integrated display and storage subsystems, portable medical devices, and sensor-rich in-car electronics where reliability of performance is critical. The thin-film technology process used to produce the fuse yields predictable and stable performance results, as each fuse passes through the testing procedure in order to qualify for use in the most sensitive electronic systems. The device supports lead-free soldering in reflow or vapor phase processes and is RoHS-compliant. Each fuse is marked for clear visual identification.