Features
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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
Typical
Cold
Resistance
(ohms)
0.350
0.090
Volt-drop
@ 100 %
In
(Volts)
max.
0.28
0.18
Melting I2T
< 10 msec
(A2 sec.)
1.4
14
Melting I2T
@ 10
In
(A2 sec.)
1.8
17
Peak Surge
Current
(Amps)
50 Pulses @ 1 KV
10 µs x 1000 µs
Model
Number
B0500T
B1250T
Ampere
Rating
(A)
0.500
1.25
Voltage
Rating
(Vrms)
600
600
Peak Surge
Current
(Amps)
10 Pulses @ 1 KV
10 µs x 1000 µs
Maximum
Power
Dissipation
(W)
0.25
0.40
25
100
35
N/A
% of Amp Rating
100 %
200 %
500 %
1000 %
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
800 V
1000 V
2500 V
5000 V
Peak
Surge
Current
100 A
100 A
500 A
500 A
Maximum
Rise/Duration
Time
10 µs x 560 µs
10 µs x 1000 µs
2 µs x 10 µs
2 µs x 10 µs
Repetitions
4 Pulses
(2 each polarity)
100 Pulses
(50 each polarity)
40 Pulses
(20 each polarity)
4 Pulses
(2 each polarity)
Temperature Range.................................................-55 ºC to +125 ºC
Environmental Characteristics
Thermal Shock ........................................MIL-STD-202, Method 107,
Test Condition B (-65 °C to +125 °C)
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.)
Physical Characteristics
Body Material ..............................Ceramic with tin plated brass caps
Solder ..................................................................................Lead-free
Packaging .......................................................2,000 pcs. per 13” reel
Power Cross Rating
Overload
Current
200 %
Fuse Rating
2.2 A
7A
40 A
60 A
Voltage
(VAC)
600 V
600 V
600 V
600 V
600 V
Clearing Time Limit
1.25 A
500 mA
max. 60 sec.
max. 15 min.
max. 1 sec.
max. 50 msec.
max. 20 msec.
max. 60 sec.
max. 2 min.
max. 100 msec.
max. 30 msec.
max. 20 msec.
Ordering Information
Part Number
B0500T
B1250T
Current Rating
500 mA
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
100
Product Dimensions
2.03
±
.102
(.080
±
.004)
10
9.65
±
.254
(.38
±
.01)
3.05
±
.127
(.120
±
.005)
3.05
±
.127
(.120
±
.005)
I
RMS
- RMS Current - A
TISP4xxxH3BJ /
TISP5xxxH3BJ
B1250T
1
B0500T
Recommended Pad Layout
3.81
(.15)
0.1
0.01
0.1
1
10
100
1000
4.06
(.16)
t - Current Duration - s
5.08
(.20)
DIMENSIONS:
mm
(INCHES)
Packaging Specifications
2.2
(.087)
13.0
DIA.
(.512)
20
(.787)
0.40
±
0.05
(.016
±
.002)
1.55
±
0.05
(.061
±
.002)
DIA.
1.6
±
0.05
(.063
±
.002)
DIA.
2.0
±
0.1
(.079
±
.004)
4.0
±
0.1
(.157
±
.004)
1.75
±
0.1
(.069
±
.004)
21.0
(.827)
DIA.
55.0
(2.165)
DIA.
C
L
10.0
±
0.1
(.394
±
.004)
R
0.3
(.012)
TYP.
7.50
±
0.1
(.295
±
.004)
16.0
±
0.3
(.630
±
.012)
3
°
REF.
3.50
±
0.1
(.138
±
.004)
330
(12.992)
DIA.
1.6
(.063)
8.0
±
0.1
(.315
±
.004)
3.50
±
0.1
(.138
±
.004)
C
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“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
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