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
Solder Reflow Temperature
..............................240 °C for 30 seconds
260 °C for 3 seconds
Packaging ..............2,000 pcs. per 13 ” reel
*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.
Telefuse™SMD Power Cross Protection Fuse
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: File: E198545
■RoHS compliant*
Max. Rise/ Repetitions Minimum Minimum Withstand Peak Current (A)
Min. Decay Peak
(µs) Total Each Polarity Voltage (V) B0500T B1250T B2000T
10/1000 50 25 1000 25 100 120
10/360 50 25 1000 30 125 150
2/10 20 10 2500 120 500 600
10/360 10 5 1000 30 125 150
2/10 2 1 5000 120 500 600
8/20 2 1 5000 75 300 350
Lightning Surge Withstand Capabilities
Ampere Voltage Typical Volt-drop Melting I2T Melting I2T Maximum
Model Rating Rating Cold @ 100 % In < 10 msec @ 10 In Power
Number (A) (VRMS) Resistance (Volts) (A2sec.) (A2sec.) Dissipation
(ohms) max. (W)
B0500T 0.500 600 0.350 0.23 2 2.3 0.20
B1250T 1.25 600 0.075 0.18 14 17 0.40
B2000T 2.0 600 0.056 0.16 33 37 0.52
Electrical Characteristics
Asia-Pacific:
TEL +886- (0)2 25624117
FAX +886- (0)2 25624116
Europe:
TEL +41-41 7685555
FAX +41-41 7685510
The Americas:
TEL +1-951 781-5500
FAX +1-951 781-5700
www.bourns.com
*RoHS COMPLIANT
Test Methods per GR-1089/TIA-968-A (FCC Pt. 68)
Short Fuse Characteristics
GR-1089 Circuit
1st Level Voltage Current
Test (VRMS) (A) Applications Duration B0500T B1250T B2000T
1 50 0.33 1 15 min.
2 100 0.17 1 15 min.
3200,400, 1 60 1 sec. Parts pass all 1st Level tests
600
4 1000 1 60 1 sec.
6 600 0.5 1 30 sec.
7 440 2.2 5 2 sec. Will open
8 600 3 5 1.1 sec. Will open
9 1000 5 5 0.4 sec. Will open
AC Power Fault Tests
Maximum Time for Fuse to Open (Seconds)
Voltage Current
(Vac) (A) Duration B0500T B1250T B2000T
600 2.2 1.0 900 Will not open
600 2.6 0.8 50 2000
600 3.0 0.5 10 100
600 3.75 0.3 5 10
600 5 0.2 2 3
600 7 Up to 15 Min. 0.08 1 2
600 10 0.04 0.5 0.7
600 12.5 0.01 0.2 0.3
600 20 0.005 0.07 0.1
600 25 0.004 0.04 0.07
600 30 0.003 0.02 0.05
AC Current Limiting Protector Tests/Fusing Coordination Tests
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Time/Current Characteristic Curve
Telefuse™SMD Power Cross Protection Fuse
0.01
0.1
1
10
100
1000
0.01 0.1 1 10 100 1000 10000
Time (Seconds)
Current (Amperes)
B1250T
B2000T
B0500T
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
Solder Profile - 260 °C for 3 Seconds
Recommended Pad Layout
DIMENSIONS: MM
(INCHES)
300
267
233
200
167
133
100
67
33
0
048
PREHEAT
SECONDS
TEMPERATURE (°C)
ZONE 2 ZONE 3 REFLOW COOL
95 143 190 238 286 333 381 429
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
“Telefuse” is a trademark of Bourns, Inc.
Packaging Specifications
Telefuse™SMD Power Cross Protection Fuse
REV. 01/09
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)
C
L
C
L
DIMENSIONS: MM
(INCHES)
