Features
■ For use in telecommunication circuit applications requiring low current protection
with high surge tolerance
■ Overcurrent protection to Telcordia GR-1089-CORE Issue 4 (B1250T only)
& UL 1950/60950
■ Bourns® TISP® products are recommended for the overvoltage section of the circuit
■ Agency recognition:
■ RoHS compliant*
File: E198545
Telefuse™ SMD Power Cross Protection Fuse
Electrical Characteristics
2
2
Ampere
Rating
(A)
Voltage
Rating
(VRMS)
Typical
Cold
Resistance
(ohms)
Volt-drop
@ 100 % In
(Volts)
Melting I T
Melting I T
Maximum
Power
Dissipation
(W)
Model
Number
< 10 msec
(A sec.)
@ 10 In
(A sec.)
2
2
max.
B0500T
B1250T
B2000T
0.500
1.25
2.0
600
600
600
0.350
0.075
0.056
0.23
0.18
0.16
2
14
33
2.3
17
37
0.20
0.40
0.52
Temperature Range ........-55 ºC to +125 ºC
Lightning Surge Withstand Capabilities
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.)
Max. Rise/
Repetitions
Minimum Minimum Withstand Peak Current (A)
Peak
Min. Decay
(µs)
Total Each Polarity Voltage (V)
B0500T
25
B1250T
100
B2000T
120
10/1000
10/360
2/10
10/360
2/10
50
50
20
10
2
25
25
10
5
1000
1000
2500
1000
5000
5000
30
120
30
120
75
125
500
125
500
150
600
150
600
1
8/20
2
1
300
350
Test Methods per GR-1089/TIA-968-A (FCC Pt. 68)
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
AC Power Fault Tests
Short
Fuse Characteristics
Applications Duration B0500T B1250T B2000T
GR-1089
Circuit
1st Level Voltage Current
..................MIL-STD-202, Method 210,
Test Condition J (235 °C, 30 sec.)
Test
1
2
(VRMS)
50
100
(A)
0.33
0.17
1
15 min.
1
15 min.
Physical Characteristics
200,400,
600
3
1
60
1 sec.
Parts pass all 1st Level tests
Body Material
..........Ceramic with tin plated brass caps
Solder............................................Lead free
Solder Reflow Temperature
..............................240 °C for 30 seconds
260 °C for 3 seconds
4
6
7
8
9
1000
600
440
600
1000
1
0.5
2.2
3
60
1
5
5
5
1 sec.
30 sec.
2 sec.
1.1 sec.
0.4 sec.
Will open
Will open
Will open
5
Packaging ..............2,000 pcs. per 13 ” reel
AC Current Limiting Protector Tests/Fusing Coordination Tests
Maximum Time for Fuse to Open (Seconds)
Voltage
(Vac)
Current
(A)
Duration
B0500T
1.0
0.8
0.5
0.3
B1250T
900
50
B2000T
Will not open
600
600
600
600
600
600
600
600
600
600
600
2.2
2.6
3.0
3.75
5
7
10
12.5
20
25
2000
100
10
Asia-Pacific:
10
5
TEL +886- (0)2 25624117
FAX +886- (0)2 25624116
Europe:
TEL +41-41 7685555
FAX +41-41 7685510
The Americas:
0.2
2
3
Up to 15 Min.
0.08
0.04
0.01
0.005
0.004
0.003
1
2
0.5
0.2
0.07
0.04
0.02
0.7
0.3
0.1
0.07
0.05
TEL +1-951 781-5500
FAX +1-951 781-5700
30
www.bourns.com
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.