4B08B-503-RC Datasheet, PDF (1/1 Pages) Bourns Electronic Solutions – Surge Line Protection Module

40 ^{4-950B7008B-503}
Features
I Overvoltage/lightning protection to ITU-T K.20
I Standard “off-the-shelf” design
I Typical application is secondary protection on telecom line cards
4B08B-503-RC - Surge Line Protection Module
Electrical Characteristics
Product Dimensions
Resistance Values (R1 = R2) .......................................50 & 100 Ω
Resistance Tolerance ...........................................................±2 %
TCR............................................................................100 ppm/°C
Ratio Tolerance.....................................................................±1 %
38.10
(1.500)
MAX.
0.62
(.025)
MAX.
Power Dissipation (per resistor) @ 25 °C ................................2 W
Temperature Range ..........................................-55 ºC to +125 ºC
MAX.
11.05
(.435)
Environmental Characteristics
Tests per MIL-STD-202 ..................................................∆ R max.
3.43 ± .38
12
56
10 11
14 15
(.135 ± .015)
10.16
0.36
(.014)
Resistance to Solvents .........................No marking deterioration
1.27
(.400)
.51
MAX.
Resistance to Solder Heat ................................................± 0.5 Ω
Solderability.......................................................>95 % Coverage
(.050)
7.62
(.300)
7.62
(.300)
2.54
(.020)
Insulation Resistance .........................10 MΩ min. (isolated pins)
(.100)
Bias Humidity Test...................................50 V / 85 % RH / 85 °C
Physical Characteristics
DIMENSIONS: ^MILLIMETERS
(INCHES)
Body Style ..........................................................Open Frame SIP
Substrate Material ..................................................96 % Alumina
Electrical Schematic
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
F1
R1
R2
F2
12
56
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
Specifications are subject to change without notice.
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09/02
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