Features
ꢀ Overvoltage/lightning protection to ITU-T K.20
ꢀ Standard “off-the-shelf” design
ꢀ Typical application is secondary protection on telecom line cards
4A12P-506-500 - Surge Line Protection Module
Matched Pair of Resistors plus Thermal Fuse
Electrical Characteristics
Resistance Values (R1 = R2)........................................................50 Ω
Resistance Tolerance.................................................................. 1 ꢀ
TCR ..................................................................................100 ppm/°C
Ratio Tolerance ........................................................................ 0.5 ꢀ
Power Dissipation (per resistor) @ 25 ꢀ.......................................2 W
Temperature Range...................................................-40 ºC to +85 ºC
Product Dimensions
32.81
MAX.
(1.292)
12.70 14.59
(.500) (.575)
1
2
4
8
10 11
Physical Characteristics
3.72
2.54 .13
(.100 .005)
Body Style .............................................Dual in line SMD - twin pack
Substrate Material ........................................................96 ꢀ Alumina
Lead Frame Material........................................Copper, solder coated
Flammability.....................................................Conforms to UL94V-0
Processability................Unit is only suitable for no-clean processing
Convection Reflow...................Unit will withstand 260 °, 20 seconds
Packaging..................16 “ diameter reels, 44mm tape, 250 pcs./reel
(.146)
10.16 .13
(.400 .005)
5.08 .13
(.200 .005)
5.28 .013
(0.208 .005)
Functional Characteristics
Lightning Surge Test...........................................10 x 700 µSec, 1 KV
Power Induction...................................................................300 Vrms
Power Contact .....................................................................220 Vrms
13.40 .25
(.527 .010)
2.54 .25
(.100 .010)
How To Order
7.11 .25
(0.280 .010)
4A 12 P - 506 - 500
Model
(4A = Surface Mount)
Number of Pins
MILLIMETERS
(INCHES)
DIMENSIONS:
Physical Configuration
Electrical Configuration
506 = Matched Pair of Resistors plus Thermal Fuse
Electrical Schematic
Resistance Code
• 500 = 50 Ω
1
2
22
21
R1
R4
4
8
19
15
Reliable Electronic Solutions
R2
R3
Asia-Pacific: TEL +886- (0)2 25624117 • FAX +886- (0)2 25624116
Europe: TEL +41-41 7685555 • FAX +41-41 7685510
North America: TEL +1-909 781-5500 • FAX +1-909 781-5700
10
11
13
12
bourns.com
09/02
COPYRIGHT© 2002, BOURNS, INC. LITHO IN U.S.A. 09/02 e/L0211
Specifications are subject to change without notice.