specifications are subject to change without notice. 4B04B-523-RC - line protection network matched pair of resistors electrical characteristics resistance values (r1 = r2)...............................................15 ? - 60 ? resistance tolerance >34 ? .........................................................................................?% <34 ? .........................................................................................?% tcr ...................................................................................100ppm/? ratio tolerance >34 ? ......................................................................................?.5% <34 ? .........................................................................................?% temperature range.....................................................-40? to +85? physical characteristics body style ................................................................open frame sip substrate material .........................................................96% alumina lead frame material........................................copper, solder coated flammability .....................................................conforms to ul94v-0 functional characteristics (per bellcore gr-1089) first level lightning sur ge - resistors will remain within tolerance after testing. 1000 volts peak, 100 amp peak current, max. rise/min. decay time 10x1000?, number of pulses ..............................25 each resistor each polarity 25 simultaneous each polarity 2500 volts peak, 500 amp peak current, max. rise/min. decay time 2x10?, number of pulses .............................10 simultaneous each polarity first level ac power fault - resistors will remain within tolerance after testing. 50 vrms, .33 amp short circuit current, duration...........................................................................15 minutes 100 vrms, .17 amp short circuit current, duration...........................................................................15 minutes 600 vrms, 1.0 amp short circuit current, duration ........................................................60 one-second pulses second level lightning sur ge - resistor package must fail safely causing no fire, electrical, or framentation hazard. 5000 volts peak, 500 amp peak current, max. rise/min. decay time 2x10?, number of pulses ...............................1 simultaneous each polarity second level ac power fault - resistor package must fail safely causing no fire, electrical, or framentation hazard. features matched pair of resistors power line fault/lightning protection to bellcore gr-1089 typical application is secondary protection on telecom line cards bourns tisp products are recommended for the overvoltage section of the protection circuit 1 4 11 14 8.89 (.350) 7.62 (.300) 17.78 (.700) 51.05 (2.010) max. 1.52 (.060) max. 0.36 (.014) max. 12.19 (.480) 3.43 .381 (.135 .015) 1 r1 4 11 r2 14 how to order 4b 04 b - 523 - rc model (4b = open frame) number of pins physical configuration electrical configuration ?523 = matched pair of resistors resistance code ?first 2 digits are significant ?third digit represents the number of zeros to follow product dimensions electrical schematic break open time dimensions: mm (inches) 0.01 0.1 1 10 100 10 100 1000 10000 power (watts) time (seconds) single resistor both resistors simultaneous copyright? 2001, bourns, inc. litho in u.s.a. ip 7/01 n0xxx rev. a standard resistance values resistance resistance (ohms) code 20 200 40 400 50 500
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