4B04B-524-XXX

*R
oH
VE S CO
AV R M
AI SIO PL
LA N IA
BL S NT
E
Features
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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
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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
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