ETC B1250T

Features
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■
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For use in telecommunication circuit applications requiring low current protection
with high surge tolerance
Overcurrent protection to Telcordia GR-1089-CORE & UL 1950/60950
Bourns® TISP® products are recommended for the overvoltage section of the circuit
Agency recognition:
File: E198545
Telefuse™ SMD Power Cross Protection Fuse
Electrical Characteristics
Peak Surge
Current
(Amps)
Peak Surge
Current
(Amps)
50 Pulses @ 1 KV
10 µs x 1000 µs
10 Pulses @ 1 KV
10 µs x 1000 µs
1.8
25
35
0.25
17
100
N/A
0.40
Model
Number
Ampere
Rating
(A)
Voltage
Rating
(Vrms)
Typical
Cold
Resistance
(ohms)
Volt-drop
@ 100 % In
(Volts)
max.
Melting I2T
< 10 msec
(A2 sec.)
Melting I2T
@ 10 In
(A2 sec.)
B0500T
0.500
600
0.350
0.28
1.4
B1250T
1.25
600
0.090
0.18
14
% of Amp Rating
Opening Time
Minimum
Maximum
4 hrs.
N/A
3 sec.
60 sec.
100 msec.
1.5 sec.
30 msec.
300 msec.
Surge Withstand Ratings (Model B1250T )
Voltage
Peak
Surge
Current
Maximum
Rise/Duration
Time
800 V
100 A
10 µs x 560 µs
1000 V
100 A
10 µs x 1000 µs
Thermal Shock ........................................MIL-STD-202, Method 107,
Test Condition B (-65 °C to +125 °C)
2500 V
500 A
2 µs x 10 µs
Shock................................................MIL-STD-202, Method 213,
Test Condition I
(100 Gs peak for 6 milliseconds)
Vibration.............................................MIL-STD-202, Method 201
(10-55 Hz, 0.06 inch total excursion)
Salt Spray .........................................MIL-STD-202, Method 101,
Test Condition B (48 hrs.)
Insulation Resistance........................MIL-STD-202, Method 302,
Test Condition A (after opening)
10,000 ohms minimum
Solderability .......................................MIL-STD-202, Method 208
Resistance to Solder Heat................MIL-STD-202, Method 210,
Test Condition J (235 °C, 30 sec.)
5000 V
500 A
2 µs x 10 µs
100 %
200 %
500 %
1000 %
Temperature Range.................................................-55 ºC to +125 ºC
Maximum
Power
Dissipation
(W)
Environmental Characteristics
Repetitions
4 Pulses
(2 each polarity)
100 Pulses
(50 each polarity)
40 Pulses
(20 each polarity)
4 Pulses
(2 each polarity)
Power Cross Rating
Overload
Current
200 %
Fuse Rating
2.2 A
7A
40 A
60 A
Voltage
(VAC)
Clearing Time Limit
1.25 A
500 mA
600 V
max. 60 sec.
max. 60 sec.
600 V
600 V
600 V
600 V
max. 15 min.
max. 1 sec.
max. 50 msec.
max. 20 msec.
max. 2 min.
max. 100 msec.
max. 30 msec.
max. 20 msec.
Physical Characteristics
Body Material ..............................Ceramic with tin plated brass caps
Solder ..................................................................................Lead-free
Packaging .......................................................2,000 pcs. per 13” reel
Ordering Information
Part Number
Current Rating
B0500T
500 mA
B1250T
1.25 A
Reliable Electronic Solutions
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
bourns.com
Specifications are subject to change without notice.
Telefuse™ SMD Power Cross Protection Fuse
Typical Current Withstand vs. Current Duration
Product Dimensions
100
2.03 ± .102
(.080 ± .004)
9.65 ± .254
(.38 ± .01)
IRMS - RMS Current - A
10
TISP4xxxH3BJ /
TISP5xxxH3BJ
B1250T
3.05 ± .127
(.120 ± .005)
3.05 ± .127
(.120 ± .005)
1
B0500T
Recommended Pad Layout
3.81
(.15)
0.1
0.01
0.1
1
10
100
4.06
(.16)
1000
t - Current Duration - s
5.08
(.20)
mm
(INCHES)
DIMENSIONS:
Packaging Specifications
2.2
(.087)
20
(.787)
13.0
DIA.
(.512)
1.55 ± 0.05
(.061 ± .002)
DIA.
55.0
(2.165)
DIA.
21.0
(.827)
DIA.
0.40 ± 0.05
(.016 ± .002)
2.0 ± 0.1
(.079 ± .004)
1.75 ± 0.1
(.069 ± .004)
1.6 ± 0.05
(.063 ± .002)
DIA.
CL
7.50 ± 0.1
(.295 ± .004)
10.0 ± 0.1
(.394 ± .004)
R
3 ° REF.
3.50 ± 0.1
(.138 ± .004)
330
(12.992)
DIA.
4.0 ± 0.1
(.157 ± .004)
0.3
(.012)
TYP.
16.0 ± 0.3
(.630 ± .012)
8.0 ± 0.1
(.315 ± .004)
3.50 ± 0.1
(.138 ± .004)
1.6
(.063)
CL
“Telefuse” is a trademark of Bourns, Inc.
“TISP” is a trademark of Power Innovations, Ltd., a Bourns Company, and is Registered in U.S. Patent and Trademark Office.
Specifications are subject to change without notice.
08/02
COPYRIGHT© 2002, BOURNS, INC. LITHO IN U.S.A. 08/02 e/L0204