Surface-mount Fuses Telecom Fuses Surface-mount Fuses Telecom Fuses The telecom FT600 fuse helps telecommunications equipment manufacturers comply with North American overcurrent protection requirements, including Telcordia GR-1089, TIA-968-A (formerly FCC Part 68), and UL60950 3rd edition. TE Circuit Protections telecom fuses offer low temperature-rise performance under sneak current fault events to help prevent damage to circuit traces or multilayer boards, and their low profile and small footprint make them suitable for high-density and space-constrained applications. Benefits Features High density placement in multi-port system designs Lead free materials and RoHS compliant Improved temperature rise performance over other Halogen free similar surface-mount fuse devices under sneak (refers to: Br 900ppm, Cl 900ppm, Br+Cl 1500ppm) current testing Low profile and small footprint 11 The FT600, in conjunction with a thyristor surge The lightning robust surface-mount fuse offers suppression device, assists designers to meet overcurrent protection in case of power fault events regulatory standards without additional series Enables the design of equipment complying with components applicable telecom specifications including UL60950, TIA-968-A, and Telcordia GR-1089 Low resistance Applications ADSL, ADSL2, ADSL2plus, SHDSL, VDSL linecards and modems T1/E1 systems Twisted-pair telecom ports requiring Telcordia GR-1089, UL60950 and FCC Part TIA-968-A compliance 103Protection 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. Use the Key Device Selection Criteria (time-to-open, surface temperature) to determine best suitability for your application. 3. Use Agency Specification / Selection Guide to select a specific part number for each application based on the agency requirements. Key Device Selection Criteria Faster Cooler Surface Application Specification Time-To-Open Temperature Customer premises equipment, IT equipment UL 60950 FT600-0500 FT600-2000 Analog modems, V.90 modems, TIA-968-A FT600-1250 ISDN modems, xDSL modems, ADSL splitters, phone sets, fax machines, answering machines, caller ID, internet appliances, PBX systems, POS terminals, wall plugs Access network equipment Telcordia GR-1089 FT600-1250 FT600-2000 Remote terminals, line repeaters, multiplexers, TIA-968-A cross-connects, WAN equipment Central office switching equipment Telcordia GR-1089 FT600-1250 FT600-2000 Analog/POTS linecards, ISDN linecards, xDSL modems, TIA-968-A ADSL/VDSL splitters, T1/E1 linecards, multiplexers, CSU/DSU, servers Note : This list is not exhaustive. TE Circuit Protection welcomes our customers input for additional application ideas for overcurrent protection of telecom applications. Agency Specification/Selection Guide for FT600 Devices Use the guide below to select FT600 devices appropriate for use in your application. The following pages contain specifications for part numbers recommended below. FT600 devices enable telecommunication equipment to meet the applicable protection requirements of these industry specifications. Refer to individual agency specifications for test procedures and circuit schematics. Users should independently evaluate the suitability of, and test each product for their application. Family Product Lightning Power Cross FT600 FT600-0500 TIA-968-A Types A & B UL60950, 3rd Ed. 600V , 40A AC FT600-1250 Telcordia GR-1089 Level 1 and 2 Telcordia GR-1089 600 V , 40A AC FT600-2000 TIA-968-A UL60950 Notes: FT600-1250 and FT600-2000 assist equipment in complying with Telcordia GR-1089 specifications. In-circuit testing is strongly recommended. The FT600-0500, FT600-1250 and FT600-2000 help meet the UL60950 Power Cross and FCC TIA-968-A 68 lightning surge requirements. Note that Type A tests allow for an overcurrent protection component to fuse open during the surge. 11 Table FT1 Interrupt Voltage and Current Ratings for FT600 Devices 2 Ampere Rating Voltage Rating Typical Resistance Typical I t 2 Part Number (A) (V) () (A s)* FT600-0500 0.50 250 0.50 1 FT600-1250 1.25 250 0.10 16 FT600-2000 2.00 250 0.05 18 Note: The FT600-xxxx devices carry 100% of rated current for 4 hours minimum and 250% of rated current for 1 second minimum, 120 seconds maximum. Resistance measured at 10% of rated current. 2 *I t is calculated at 10 ms or less. Figure FT1 Thermal Derating Curve (Normalized) for FT600 Devices 130 120 110 100 90 80 70 -70 -50 -30 -10 10 30 50 70 90 110 130 Ambient Temperature C 104 RoHS Compliant, ELV Compliant HF Halogen Free % of Current Rating