ALFR-2B IRCTT | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 2
Technical content
IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc• 4222 South Staples Street • Corpus Christi T exas 78411 USAWire and Film Technologies Division T elephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com Telecommunications Line Feed Resistors Environmental Data ALFR-2B Series
- 1% tolerance
- Auto-insertable, small size
- Withstands lightning surges
- 4.8 ohm to 1600 ohm range
- Opens safely under power cross
- Flameproof inorganic construction
- Meets all test and specifications of GR-1089 & UL-497A
- Meets FCC and EIA requirements and is UL-497A approved Characteristics Limits-ALFR-2B Wattage 2 watts Temperature Coefficient 50 ppm/°C Tolerance 1% and 5% Load Life (1000 hours) 1%∆R maximum Temperature Cycling 1%∆R maximum Short Time Overload (5x RW for 10 sec.) 1%∆R maximum Moisture Load 1%∆R maximum Resistance Range 4.8 to 1600 ohms Lightning Surge (1000V-10/1000µsec.) 25 negative & 25 positive surges (2 minute intervals) No failures DESIGN & CONSTRUCTION: The Line Feed Resistor is a tight tolerance, stable resistor which has the additional capability to withstand both in rush currents and certain lightning pulse surges but would fuse safely when exposed to overload conditions such as the 600 volt power cross specified in GR-1089. ALFR-2B Series Issue October 2008 Sheet 1 of 2
- 4222 South Staples Street • Corpus Christi T exas 78411 USAWire and Film Technologies Division T elephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com Physical Data Telecommunications Line Feed Resistors Sample Part No. IRC Type ALFR Power 2B = 2 watts Resistance Value Tolerance F = ±1%, J = ±5% Ordering Data ALFR - 2B 1000 F How to use the ALFR-2B: Leads 1 & 2 can be interchanged with leads 3 & 4. The part can then be inserted into the circuit in either orientation. 1.045 ± 0.020 0.450 ± 0.020 0.025 0.700 ± 0.015 0.900 ± 0.015 0.100 ± 0.015 1 2 3 0.070 Typ. 0.150 ± 0.020 0.125 ± 0.020
0.030 Meniscus Permitted
0.138 ± 0.020 0.265 ± 0.020 0.021 Lead Dia. 0.032 Lead Dia. The four (4) terminal leads shall be in the line to a tolerance to ±0.015 inch. The lead spacing dimensions as specified, shall be measures from the tip of the lead. The leads may have a 15° draft relative to the protector body. ALFR-2B Series Issue October 2008 Sheet 2 of 2