4B04B Datasheet, PDF (1/1 Pages) Bourns Electronic Solutions – Thick Film Surge Resistor Networks

Features
s Over-voltage/lightning protection to
Bellcore GR-1089 & ITU-T K.20
s Standard “off the shelf” designs
s Typical application is secondary
protection on telecom line cards
s Custom versions available, including
SMD solutions and fuse technology
(contact factory)
4B04B - Thick Film Surge Resistor Networks
4B04B-501 (Pair of Matched Resistors)
Product Characteristics
Resistance Values ......................................................20Ω - 100Ω
Resistance Tolerance ............................................................±1%
TCR.............................................................................100ppm/°C
Ratio Tolerance..............................................>34Ω............±0.5%
..............................................<34Ω...............±1%
Power Dissipation (per resistor) @ 25ºC ..................................2W
Temperature Range ............................................-55ºC to +125ºC
Environmental Characteristics
TESTS PER MIL-STD-202 ..............................................∆R MAX.
Resistance to Solvents .........................No Marking Deterioration
Resistance to Solder Heat....................................±0.5% or 0.5Ω,
whichever is greater
Solderability ........................................................>95% Coverage
Insulation Resistance ..........................10 MΩ min. (isolated pins)
Bias Humidity Test ..........................................50V/85% RH/85°C
Functional Characteristics
Lightning Surge Test
Bellcore Spec GR-1089
10 x 1000 µsec .................1 kV
2 x 10 µsec ....................2.5 kV
ITU-T K.20
10 x 700 µsec ...................2 kV
Power Cross Test .............................................Per Bellcore spec.
(Vrms applied vary with resistance values)
Physical Characteristics
Body Style ..........................................................Open Frame SIP
Body Material...........................................................96% Alumina
Lead Frame Material..................................Copper, solder coated
Standard Parts Available Off the Shelf ........................50Ω, 100Ω
15.24 _TYP.
(0.600)
50.80
(2.000)
12.70
(0.500)
MAX.
15.24
1 ^(0.600)
15.24
15.24
7 ^(0.600) 13 ^(0.600) 19
2.29 Max.
(.090 Max.)
0.36 Max.
(.014 Max.)
4B04B-502 (Resistor with Thermal Fuse)
Product Characteristics
Resistance Values.....................................................5.6Ω - 100Ω
Resistance Tolerance......................1% (optional), 5% (standard)
TCR ...................................................................800 ±200ppm/°C
Power Dissipation @ 25ºC.......................................................2W
Temperature Range............................................-55ºC to +125ºC
Functional Characteristics
Lightning Surge Test
Bellcore Spec GR-1089
10 x 1000 µsec ..................1 kV
2 x 10 µsec .....................2.5 kV
Power Cross Test ............................................Per Bellcore spec.
(Vrms applied vary with resistance values)
Physical Characteristics
Body Style ..........................................................Open Frame SIP
Body Material ..........................................................96% Alumina
Lead Frame Material .................................Copper, solder coated
Standard Parts Available Off the Shelf ................5.6Ω, 10Ω, 34Ω
MAX.
11.30
(0.445)
25.40±.50
(1.000±.020)
3.05 Max.
(.120 Max.)
2.54±.127
(.100±.005)
1 2 _{17.78±.254} 3 4
(0.700±.010)
1.40 Max. _TYP.
(.055 Max.)
2.54±.127
(.100±.005)
0.36 Max.
(.014 Max.)
Functional Schematic
Governing dimensions are in mm.
Dimensions in parenthesis are inches
and are approximate.
User must short pins 3 & 4 on the circuit board
How To Order
4B 04 B - 50X - XXX
Model
(4B = Open Frame)
Number of Pins
Physical Configuration
Electrical Configuration
• 501 = Pair of Matched Resistors
Resistance Code
• First 2 digits are significant
• Third digit represents the
number of zeros to follow
How To Order
4B 04 B - 50X - XXX J
Model
(4B = Open Frame)
Number of Pins
Physical Configuration
Electrical Configuration
• 502 = Resistor with Thermal Fuse
Resistance Code
• First 2 digits are significant
• Third digit represents the
number of zeros to follow
5% tolerance
S ecifications are s bject to change itho t notice
115