For use in telecommunication circuit applications requiring low current protection
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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 碌s x 1000 碌s
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 碌s x 1000 碌s
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 碌s x 560 碌s
10 碌s x 1000 碌s
2 碌s x 10 碌s
2 碌s x 10 碌s
Repetitions
4 Pulses
(2 each polarity)
100 Pulses
(50 each polarity)
40 Pulses
(20 each polarity)
4 Pulses
(2 each polarity)
Temperature Range.................................................-55 潞C to +125 潞C
Environmental Characteristics
Thermal Shock ........................................MIL-STD-202, Method 107,
Test Condition B (-65 擄C to +125 擄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 擄C, 30 sec.)
Physical Characteristics
Body Material ..............................Ceramic with tin plated brass caps
Solder ..................................................................................Lead-free
Packaging .......................................................2,000 pcs. per 13鈥?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 鈥?FAX +886- (0)2 25624116
Europe:
TEL +41-41 7685555 鈥?FAX +41-41 7685510
North America:
TEL +1-909 781-5500 鈥?FAX +1-909 781-5700
bourns.com
Specifications are subject to change without notice.
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