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| Features I I I Overvoltage/lightning protection to ITU-T K.20 Standard "off-the-shelf" design Typical application is secondary protection on telecom line cards 4A12P-506-500 - Surge Line Protection Module Matched Pair of Resistors plus Thermal Fuse Electrical Characteristics Resistance Values (R1 = R2) ........................................................50 Resistance Tolerance ..................................................................1 % TCR ..................................................................................100 ppm/C Ratio Tolerance ........................................................................0.5 % Power Dissipation (per resistor) @ 25 % .......................................2 W Temperature Range...................................................-40 C to +85 C 32.81 MAX. (1.292) Product Dimensions 12.70 14.59 (.500) (.575) Physical Characteristics Body Style .............................................Dual in line SMD - twin pack Substrate Material ........................................................96 % Alumina Lead Frame Material........................................Copper, solder coated Flammability .....................................................Conforms to UL94V-0 Processability................Unit is only suitable for no-clean processing Convection Reflow...................Unit will withstand 260 , 20 seconds Packaging ..................16 " diameter reels, 44mm tape, 250 pcs./reel 12 3.72 (.146) 10.16 .13 (.400 .005) 4 8 10 11 2.54 .13 (.100 .005) 5.08 .13 (.200 .005) 5.28 .013 (0.208 .005) Functional Characteristics Lightning Surge Test ...........................................10 x 700 Sec, 1 KV Power Induction ...................................................................300 Vrms Power Contact .....................................................................220 Vrms 13.40 .25 (.527 .010) How To Order 2.54 .25 (.100 .010) 4A 12 P - 506 - 500 Model (4A = Surface Mount) Number of Pins Physical Configuration Electrical Configuration 506 = Matched Pair of Resistors plus Thermal Fuse Resistance Code * 500 = 50 7.11 .25 (0.280 .010) DIMENSIONS: MILLIMETERS (INCHES) Electrical Schematic 1 22 2 21 R1 R4 4 19 8 15 Reliable Electronic Solutions R2 R3 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 10 13 bourns.com 11 12 09/02 Specifications are subject to change without notice. COPYRIGHT(c) 2002, BOURNS, INC. LITHO IN U.S.A. 09/02 e/L0211 |
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