B1250T Bourns Inc., B1250T Datasheet
B1250T
Manufacturer Part Number
B1250T
Description
FUSE TELECOM 1.25A 600V SMD
Manufacturer
Bourns Inc.
Series
Telefuse™r
Type
Slow Blow Surface Mount Fuser
Datasheet
1.B1250T.pdf
(3 pages)
Specifications of B1250T
Fuse Type
Power Cross/Barrier Network
Voltage - Rated
600VAC
Current
1.25A
Package / Case
Non-Standard SMD
Size / Dimension
0.380" L x 0.120" W x 0.120" H (9.65mm x 3.05mm x 3.05mm)
Mounting Type
Holder/Surface Mount
Operating Temperature
-55°C ~ 125°C
Dc Cold Resistance
0.075 Ohm
Melting I²t
14
Current Rating
1.25 Amps
Voltage Rating
600 Volts
Fuse Size / Group
3812
Termination Style
SMD/SMT
Body Material
Ceramic
Dimensions
9.65 mm L x 3.05 mm W
Product
Telecommunications Power Fuse
Mounting Style
SMD/SMT
Operating Temperature Range
- 55 C to + 125 C
Resistance
0.075 Ohms
Voltage Rating (vac)
600V
Power Dissipation
400mW
Operating Temp Range
-55C to 125C
Package Type
CSMD
Mounting
Surface Mount
Housing Material
Ceramic
Operating Temperature Classification
Military
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Color
-
Lead Free Status / Rohs Status
Compliant
Other names
B1250TTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
B1250T
Manufacturer:
BOURNS
Quantity:
4 000
Company:
Part Number:
B1250T
Manufacturer:
HOKURIKU
Quantity:
17 500
Part Number:
B1250T1.25A600V
Manufacturer:
BOURNS/伯恩斯
Quantity:
20 000
Temperature Range ........-55 ºC to +125 ºC
Thermal Shock ......................MIL-STD-202,
Shock ..........MIL-STD-202, Method 213,
Vibration ........MIL-STD-202, Method 201
Salt Spray ....MIL-STD-202, Method 101,
Insulation Resistance ........MIL-STD-202,
Solderability ..MIL-STD-202, Method 208
Resistance to Solder Heat
Body Material
Solder ............................................Lead free
Solder Reflow Temperature
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.
Electrical Characteristics
Environmental Characteristics
Physical Characteristics
..................MIL-STD-202, Method 210,
..............................240 °C for 30 seconds
..........Ceramic with tin plated brass caps
Number
B0500T
B1250T
B2000T
Model
(10-55 Hz, 0.06 inch total excursion)
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
Test Condition J (235 °C, 30 sec.)
(100 Gs peak for 6 milliseconds)
Method 302, Test Condition A
Method 107, Test Condition B
Test Condition B (48 hrs.)
10,000 ohms minimum
260 °C for 3 seconds
Ampere
(-65 °C to +125 °C)
Rating
0.500
1.25
(A)
2.0
Test Condition I
(after opening)
Voltage
(VRMS)
Rating
600
600
600
Telefuse
Features
Test Methods per GR-1089/TIA-968-A (FCC Pt. 68)
1st Level
GR-1089
Lightning Surge Withstand Capabilities
Min. Decay
AC Power Fault Tests
AC Current Limiting Protector Tests/Fusing Coordination Tests
Max. Rise/
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
Agency recognition:
RoHS compliant*
10/1000
Voltage
Test
10/360
10/360
(Vac)
2/10
2/10
8/20
1
2
3
4
6
7
8
9
Resistance
(µs)
600
600
600
600
600
600
600
600
600
600
600
Typical
(ohms)
0.350
0.075
0.056
Cold
®
TISP
(VRMS)
200,400,
Voltage Current
1000
1000
™
100
600
600
440
600
50
®
Total
SMD Power Cross Protection Fuse
50
50
20
10
Current
products are recommended for the overvoltage section of the circuit
2
2
Repetitions
3.75
12.5
(A)
2.2
2.6
3.0
10
20
25
30
5
7
@ 100 % In
Circuit
Volt-drop
Each Polarity Voltage (V)
Short
0.33
0.17
(Volts)
(A)
0.5
2.2
max.
0.23
0.18
0.16
1
1
3
5
25
25
10
5
1
1
Up to 15 Min.
File: E198545
Duration
Applications
60
60
Melting I 2 T
1
1
1
5
5
5
< 10 msec
(A 2 sec.)
Minimum
Peak
1000
1000
2500
1000
5000
5000
14
33
2
Maximum Time for Fuse to Open (Seconds)
Duration
1.1 sec.
0.4 sec.
15 min.
15 min.
30 sec.
1 sec.
1 sec.
2 sec.
B0500T
0.005
0.004
0.003
0.08
0.04
0.01
1.0
0.8
0.5
0.3
0.2
Minimum Withstand Peak Current (A)
B0500T
Melting I 2 T
120
120
B0500T
Will open
Will open
Will open
(A 2 sec.)
25
30
30
75
@ 10 In
2.3
17
37
Parts pass all 1st Level tests
Fuse Characteristics
B1250T
0.07
0.04
0.02
900
0.5
0.2
50
10
5
2
1
B1250T
B1250T
100
125
500
125
500
300
Dissipation
Maximum
Power
Will not open
0.20
0.40
0.52
(W)
B2000T
2000
B2000T
0.07
0.05
100
B2000T
0.7
0.3
0.1
10
3
2
120
150
600
150
600
350
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B1250T Summary of contents
Page 1
... Specifications are subject to change without notice. Customers should verify device performance in their specific applications. 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 ® ...
Page 2
... Time (Seconds) Solder Profile - 260 °C for 3 Seconds 300 PREHEAT 267 233 200 167 133 100 B2000T B1250T B0500T 10 100 1000 10000 ZONE 2 ZONE 3 REFLOW 95 143 190 238 286 SECONDS Customers should verify actual device performance in their specific applications. Product Dimensions 2.03 ± ...
Page 3
Telefuse ™ SMD Power Cross Protection Fuse Packaging Specifications 2.2 (.087) 21.0 (.827) DIA. 330 (12.992) DIA. REV. 01/09 “Telefuse” trademark of Bourns, Inc. Specifications are subject to change without notice. Customers should verify actual device performance in ...