*R oH VE S CO AV R M AI SIO PL LA N IA BL S NT E Features ■ ■ ■ ■ ■ RoHS compliant* versions available Matched pair of resistors plus thermal fuse Power line fault/lightning protection to BELLCORE GR-1089 Typical application is secondary protection on telecom line cards ■ ■ UL 497A recognition Thermal fuse links Bourns TISP® products are recommended for the overvoltage section of the protection circuit 4B04B-524-RC - Line Protection Module Matched Pair of Resistors plus Thermal Fuse Electrical Characteristics Product Dimensions Resistance Values (R1 = R2) .................................15 ohms- 60 ohms Resistance Tolerance >34Ω ........................................................................................±2 % <34Ω ........................................................................................±5 % TCR ..................................................................................100 ppm/°C Ratio Tolerance >34Ω .....................................................................................±0.5 % <34Ω ........................................................................................±2 % Temperature Range...................................................-40 ºC to +85 ºC Physical Characteristics Body Style ..........................................................Open Frame SIP Substrate Material ..................................................96 % Alumina Lead Frame Material .................................Copper, solder coated Flammability...............................................Conforms to UL94V-0 51.05 MAX. (2.010) 3.05 (.120) MAX. 12.19 (.480) 1 8.89 (.350) 4 11 3.43 ± .381 (.135 ± .015) 17.78 (.700) 7.62 (.300) 14 DIMENSIONS: 0.36 (.014) MAX. MM (INCHES) Functional Characteristics (per Bellcore GR-1089) First Level Lightning Surge Resistors will remain within tolerance after testing. Electrical Schematic 1000 Volts Peak, 100 Amp Peak Current, Max. Rise/Min. Decay Time 10x1000 µs, 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 µs, Number of Pulses .............................10 simultaneous each polarity R1 1 R2 4 11 14 Break Open Time 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 Surge 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 µs, Number of Pulses ...............................1 simultaneous each polarity How To Order Second Level AC Power Fault Resistor package must fail safely causing no fire, electrical, or framentation hazard. 4B 04 B - 524 - RC LF Model (4B = Open Frame) Standard Resistance Values Number of Pins Resistance (ohms) Resistance Code 20 40 50 200 400 500 *RoHS Directive 2002/95/EC Jan 27, 2003 including Annex. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. Physical Configuration Electrical Configuration • 524 = Matched Pair of Resistors plus Thermal Fuse Resistance Code • First 2 digits are significant • Third digit represents the number of zeros to follow RoHS Compliant Option Blank = Standard Product LF = RoHS Compliant Product REV. 06/11