Tyco Electronics' Raychem Circuit Protection division (Menlo Park, CA) announced its new PolySwitch TSM600-250 over-current protection device for DSL and other telecommunications network equipment applications. The small-footprint, low-resistance, surface-mount device provides tandem resettable over-current circuit protection for use in high-density, multi-port linecards and other telecommunications network equipment.
The TSM600-250 device incorporates two matched, low-resistance, polymeric-positive, temperature coefficient (PPTC) components into a single device yielding balanced protection on tip-and-ring lines with minimal attenuation of data transmission. The TSM600-250 device occupies half of the board space of two previous-generation 600V PPTC devices and eliminates the risk of unmatched tip-and-ring line protection. In addition to interrupting ac power faults, the device is robust to Telcordia GR-1089 lightning and has a rated hold current of 250mA. The devices are tape-and-reel packaged for compatibility
with high-volume assembly.
Pricing starts at $0.80 in volumes of 100,000. Samples are available now, with a delivery lead-time of eight weeks ARO.
