The new PolySwitch device features a tighter resistance window and lower post-tripresistance than its predecessor, theTR600-150 device. The smaller physical dimensions of the device facilitate development of more densely populated PCB designs, and permit drop-in replacement for existing designs. In addition, the new TRF600-150 device utilizes a lead(Pb)-free construction that is compliant with RoHS (Reduction of Hazardous Substances) Directive 2002/95/E.

When compared to traditional lightning-robust fuses that do not interrupt until fault currents exceed 1A, the resettable TRF600-150 device offers a 150 mA hold current and limits let-through energy to significantly lower levels. This permits the use of smaller, less expensive, and lower-power handling circuit components. In addition to interrupting potentially damaging power faults, the PolySwitch TRF600-150 device is robust to ITU-T K.20/21/45 lightning surges, making it an appropriate choice for protection of telecom and networking equipment designed for use around the world.

The TRF600-150 device is available in tape and reel packaging for compatibility with high-volume manufacturing, or in bulk quantities.