Polyswitch RKEF Device Designed For Smaller Electronic Equipment

摘要

Tyco Electronics has introduced a new line of PolySwitch circuit protection devices. Designed for use in a wide variety of general electronic products, ranging from industrial controls to battery packs, the new PolySwitch RKEF devices are functionally equivalent to the company's existing RXEF overcurrent protection devices, but are available in a significantly smaller form-factor. Key device parameters for the PolySwitch RKEF series include hold-current ratings of 0.5A to 5A and trip-current ratings of 1A to 10A. All devices have a maximum operating voltage rating of 60V and can operate at up to 85℃- the same maximum operating temperature as the RXEF series. PolySwitch RKEF devices are of through-hole construction andrnmany of the radial-leaded devices have the same lead spacing as the RXEF devices. This facilitates easy replacement of RXEF devices and can help designers optimise board space and improve thermal conditions. Lead spacing for the RKEF250 and RKEF300 devices is half that of the equivalent RXEF parts, yielding even more space.