Features
ꢀ Overcurrent/lightning protection to BELLCORE GR-1089
ꢀ Typical application is secondary protection on telecom line cards
ꢀ UL497A recognition
ꢀ Thermal fuse links
4A12P-516-500 - Surge Line Protection Module
Electrical Characteristics
Product Dimensions
Resistance Value..........................................................................50 Ω
Resistance Tolerance..................................................................±± ꢀ
TCR ..................................................................................±00 ppm/°C
Ratio Tolerance ........................................................................±0.5 ꢀ
Temperature Range...................................................-40 ºC to +85 ºC
7.87
(.310)
MAX.
32.81
(1.292)
MAX.
2.80
(.110)
Physical Characteristics
12.70 14.59
(.500) (.575)
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.................±6 “ diameter reels, 44 mm tape, 250 pcs./reel
1
2
4
8
10 11
3.72
(.146)
2.54 .13
(.100 .005)
4.07 .25
(.160 .010)
10.16 .13
(.400 .005)
MILLIMETERS
(INCHES)
Functional Characteristics (per Bellcore GR-1089)
First Level Lightning Surge -
Resistors will remain within tolerance after testing.
DIMENSIONS:
Electrical Schematic
±000 Volts Peak, ±00 Amp Peak Current,
Max. Rise/Min. Decay Time ±0x±000 µs,
60 Seconds Between Pulses:
R2B
R1B
Number of Pulses..............................25 each resistor each polarity
F2B
F1B
2500 Volts Peak, 500 Amp Peak Current,
Max. Rise/Min. Decay Time 2x±0 µs,
22
21
2
19
4
15
8
13
10
12
11
60 Seconds Between Pulses:
1
Number of Pulses .............................±0 simultaneous each polarity
F1A
F2A
First Level AC Power Fault -
Resistors will remain within tolerance after testing.
R1A
R2A
50 Vrms, 0.33 Amp Short Circuit Current:
Duration...........................................................................±5 minutes
±00 Vrms, 0.±7 Amp Short Circuit Current:
Duration...........................................................................±5 minutes
How To Order
4A 12 P - 516 - 500
600 Vrms, ±.00 Amp Short Circuit Current:
Duration........................................................60 One-second pulses
Model
(4A = Surface Mount)
Number of Pins
Second Level Lightning Surge -
Resistor package must fail safely causing no fire, electrical, or
framentation hazard.
Physical Configuration
Electrical Configuration
5±6 = Matched pair of resistors plus thermal fuse
5000 Volts Peak, 500 Amp Peak Current,
Resistance Code
• 500 = 50 Ω
Max. Rise/Min. Decay Time 2x±0 µs:
Number of Pulses ...............................± simultaneous each polarity
Second Level AC Power Fault -
Resistor package must fail safely causing no fire, electrical, or
framentation hazard. Device will fail prior to Bussman MDQ ±-6/±0 A
fuse in series.
±00 Vrms, 2.2 Amp Short Circuit Current:
Duration...........................................................................±5 minutes
Reliable Electronic Solutions
600 Vrms, 7 Amp Short Circuit Current:
Duration............................................................................5 seconds
Asia-Pacific: TEL +886- (0)2 25624±±7 • FAX +886- (0)2 25624±±6
Europe: TEL +4±-4± 7685555 • FAX +4±-4± 76855±0
North America: TEL +±-909 78±-5500 • FAX +±-909 78±-5700
250 Vrms, 25 Amp Short Circuit Current:
Duration...........................................................................±5 minutes
bourns.com
600 Vrms, 60 Amp Short Circuit Current:
Duration............................................................................5 seconds
09/02
COPYRIGHT© 2002, BOURNS, INC. LITHO IN U.S.A. 09/02 e/L0211
Specifications are subject to change without notice.