POLYSWITCH RESETTABLE DEVICES Telecommunications and Networking Devices The PolySwitch families of telecommunications and networking devices help meet the growing demand for resettable overcurrent protection. These product families help pr ovide protection against damage caused by power cross and power induction surges as defined in ITU, Telcordia GR1089 and UL60950. Available in chip, surface-mount and radial-leaded configurations, Littelfuses PolySwitch devices help improve the reliability of cus tomer premise and network equipment worldwide. BENEFITS APPLICATIONS Choice of many product options helps engineers by Modems improving design flexibility Phone sets Compatible with high-volume electronics assembly Fax machines Assist in meeting regulatory equipment requirements Phone wall outlets Help improve line balance Alarm systems Applicable for legacy POTS and modern digital PBX systems communications equipment MDF modules Analog and digital line cards FEATURES T1/E1 equipment RoHS compliant xDSL modems and splitters Resettable overcurrent protection Powered ethernet systems Surface-mount, radial-leaded and chip form factors VoIP (Voice over Internet Protocol) equipment Fast time-to-trip LAN, WAN equipment Agency recognition: UL, CSA, TV Customer premise equipment Resistance-sorted and matched devices available Access network hardware Low parasitic capacitance/flat impedance with frequency RoHS 232 RoHS Compliant, ELV Compliant Specifications subject to change without notice. 2018 Littelfuse, Inc. PolySwitch Resettable Devices Telecommunications and Networking Devices Application Guide for Telecommunications and Networking Devices* To use this guide, follow the steps below: 1. Select your equipment type from the guide below. 2. Select the type of protection depending on the agency and regional specifications in the second column. 3. Select the form factor for your application. 4. Use the Agency Specification/ PolySwitch Device Selection Guide on the next page to select a specific part number for each application based on the agency requirements. 5. Parts with fast time-to-trip or low resistance are available. Please consult a Littelfuse PolySwitch representative. Overcurrent Protection Region/ Form Factor Application Specification Radial-leaded Surface-mount Chip Customer Premise equipment North America TRF600-150 TS600-170F TIA-968-A, TR600-150F-EX TS600-200F IT equipment UL 60950, TRF600-160 TSM600-250F Analog Modems, V.90 Modems, GR1089 Port Type 3 TRF600-250 TSM600-400F ISDN Modems, xDSL Modems, TRF-600-400 Europe/Asia/ TRF250-120 TS250-130F TCF250-120 ADSL Splitters, Phone Sets, Fax Machines, South America TRF250-120T TSV250-130F TCF250-145 Answering Machines, Caller ID, Internet ITU K.21 TRF250-120U TSV250-184F TCF250-180T Appliances, PBX Systems, POS Terminals, TRF250-120UT TSL250-130F TRF250-145 Wall Plugs TRF250-145T TRF250-145U TRF250-180 TRF250-183 TRF250-183U TRF250-184 Access network equipment () North America TRF600-160 TS600-170F GR1089 Port Type 5 TRF600-250 TS600-200F Remote Terminals, Line Repeaters, TRF600-400 TS600-400F Multiplexers, Cross-Connects, TSM600-250F WAN Equipment TSM600-400F Europe/Asia/ TRF250-120 TS250-130F TCF250-120 South America TRF250-120T TSV250-130F TCF250-145 ITU K.45 TRF250-120U TSV250-184F TCF250-180T TRF250-120UT TSL250-130F TRF250-145 TRF250-145T TRF250-145U TRF250-180 TRF250-183 TRF250-183U TRF250-184 RoHS 233 RoHS Compliant, ELV Compliant Specifications subject to change without notice. 2018 Littelfuse, Inc.