4B08B-503-101

Features 4B08 -500 97 40 B-50 I 3 I I Overvoltage/lightning protection to ITU-T K.20 Standard “off-the-shelf” design Typical application is secondary protection on telecom line cards 4B08B-503-RC - Surge Line Protection Module Electrical Characteristics Resistance Values (R1 = R2) .......................................50 & 100 Ω Resistance Tolerance ...........................................................±2 % TCR............................................................................100 ppm/°C Ratio Tolerance.....................................................................±1 % Power Dissipation (per resistor) @ 25 °C ................................2 W Temperature Range ..........................................-55 ºC to +125 ºC Environmental Characteristics Tests per MIL-STD-202 ..................................................∆ R max. Resistance to Solvents .........................No marking deterioration Resistance to Solder Heat ................................................± 0.5 Ω Solderability.......................................................>95 % Coverage Insulation Resistance .........................10 MΩ min. (isolated pins) Bias Humidity Test...................................50 V / 85 % RH / 85 °C Physical Characteristics Body Style ..........................................................Open Frame SIP Substrate Material ..................................................96 % Alumina Lead Frame Material .................................Copper, solder coated Flammability...............................................Conforms to UL94V-0 Functional Characteristics Lightning Surge Test ....................................10 x 700 µSec, 1 KV Power Induction.............................................................300 Vrms Power Contact...............................................................220 Vrms Product Dimensions 38.10 MAX. (1.500) 0.62 (.025) MAX. MAX. 11.05 (.435) 12 56 10 11 10.16 (.400) 7.62 (.300) 14 15 .51 (.020) 2.54 (.100) 0.36 (.014) MAX. 3.43 ± .38 (.135 ± .015) 1.27 (.050) 7.62 (.300) DIMENSIONS: MILLIMETERS (INCHES) Electrical Schematic F1 R1 R2 F2 1 2 5 6 10 11 14 15 How To Order 4B 08 B - 503 - XXX Model (4B = Open Frame) Number of Pins Physical Configuration Electrical Configuration 503 = Matched pair of resistors plus thermal fuse Resistance Code • 500 = 50 Ω • 101 = 100 Ω Reliable Electronic Solutions Asia-Pacific: TEL +886- (0)2 25624117 • FAX +886- (0)2 25624116 Europe: TEL +41-41 7685555 • FAX +41-41 7685510 North America: TEL +1-909 781-5500 • FAX +1-909 781-5700 bourns.com 09/02 Specifications are subject to change without notice. COPYRIGHT© 2002, BOURNS, INC. LITHO IN U.S.A. 09/02 e/L0211