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Datasheet: B1250T (Bourns Electronic Solutions)

Telefuse SMD Power Cross Protection Fuse

 

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Bourns Electronic Solutions
Temperature Range.................................................-55 C to +125 C
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
Specifications are subject to change without notice.
Telefuse
TM
SMD Power Cross Protection Fuse
Features
I
For use in telecommunication circuit applications requiring low current protection
with high surge tolerance
I
Overcurrent protection to Telcordia GR-1089-CORE & UL 1950/60950
I
Bourns
TISP
products are recommended for the overvoltage section of the circuit
I
Agency recognition: File: E198545
Ordering Information
% of Amp Rating
Opening Time
Minimum
Maximum
100 %
4 hrs.
N/A
200 %
3 sec.
60 sec.
500 %
100 msec.
1.5 sec.
1000 %
30 msec.
300 msec.
Peak
Maximum
Voltage
Surge
Rise/Duration
Repetitions
Current
Time
800 V
100 A
10 s x 560 s
4 Pulses
(2 each polarity)
1000 V
100 A
10 s x 1000 s
100 Pulses
(50 each polarity)
2500 V
500 A
2 s x 10 s
40 Pulses
(20 each polarity)
5000 V
500 A
2 s x 10 s
4 Pulses
(2 each polarity)
Part Number
Current Rating
B0500T
500 mA
B1250T
1.25 A
Overload
Voltage Clearing Time Limit
Current
(VAC)
1.25 A
500 mA
200 %
600 V
max. 60 sec.
max. 60 sec.
Fuse Rating
2.2 A
600 V
max. 15 min.
max. 2 min.
7 A
600 V
max. 1 sec.
max. 100 msec.
40 A
600 V
max. 50 msec.
max. 30 msec.
60 A
600 V
max. 20 msec.
max. 20 msec.
Power Cross Rating
Surge Withstand Ratings (Model B1250T )
Peak Surge
Peak Surge
Ampere
Voltage
Typical
Volt-drop
Melting I2T
Melting I2T
Current
Current
Maximum
Model
Rating
Rating
Cold
@ 100 % In
< 10 msec
@ 10 In
(Amps)
(Amps)
Power
Number
(A)
(Vrms)
Resistance
(Volts)
(A2 sec.)
(A2 sec.)
50 Pulses @ 1 KV
10 Pulses @ 1 KV
Dissipation
(ohms)
max.
10 s x 1000 s
10 s x 1000 s
(W)
B0500T
0.500
600
0.350
0.28
1.4
1.8
25
35
0.25
B1250T
1.25
600
0.090
0.18
14
17
100
N/A
0.40
Electrical Characteristics
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" 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.
Typical Current Withstand vs. Current Duration
Packaging Specifications
Telefuse
TM
SMD Power Cross Protection Fuse
100
10
1
0.1
0.01
0.1
1
10
100
1000
t - Current Duration - s
- RMS Current - A
I
RMS
B1250T
B0500T
TISP4xxxH3BJ /
TISP5xxxH3BJ
3.05
.127
(.120
.005)
3.05
.127
(.120
.005)
2.03
.102
(.080
.004)
9.65
.254
(.38
.01)
3.81
(.15)
4.06
(.16)
5.08
(.20)
Product Dimensions
Recommended Pad Layout
DIMENSIONS:
mm
(INCHES)
COPYRIGHT 2002, BOURNS, INC. LITHO IN U.S.A. 08/02 e/L0204
08/02
330
(12.992)
2.0
0.1
(.079
.004)
0.40
0.05
(.016
.002)
1.55
0.05
(.061
.002)
DIA.
1.6
0.05
(.063
.002)
DIA.
0.3
(.012)
TYP.
R
1.6
(.063)
20
(.787)
2.2
(.087)
13.0
(.512)
DIA.
55.0
(2.165)
DIA.
DIA.
21.0
(.827)
DIA.
1.75
0.1
(.069
.004)
7.50
0.1
(.295
.004)
16.0
0.3
(.630
.012)
10.0
0.1
(.394
.004)
3
REF.
4.0
0.1
(.157
.004)
8.0
0.1
(.315
.004)
3.50
0.1
(.138
.004)
3.50
0.1
(.138
.004)
CL
CL
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