FUSE TELECOM 1.25A 600V SMD

B1250T

Manufacturer Part NumberB1250T
DescriptionFUSE TELECOM 1.25A 600V SMD
ManufacturerBourns Inc.
SeriesTelefuse™
TypeSlow Blow Surface Mount Fuse
B1250T datasheet
 


Specifications of B1250T

Fuse TypePower Cross/Barrier NetworkVoltage - Rated600VAC
Current1.25APackage / CaseNon-Standard SMD
Size / Dimension0.380" L x 0.120" W x 0.120" H (9.65mm x 3.05mm x 3.05mm)Mounting TypeHolder/Surface Mount
Operating Temperature-55°C ~ 125°CDc Cold Resistance0.075 Ohm
Melting I²t14Current Rating1.25 Amps
Voltage Rating600 VoltsFuse Size / Group3812
Termination StyleSMD/SMTBody MaterialCeramic
Dimensions9.65 mm L x 3.05 mm WProductTelecommunications Power Fuse
Mounting StyleSMD/SMTOperating Temperature Range- 55 C to + 125 C
Resistance0.075 OhmsVoltage Rating (vac)600V
Power Dissipation400mWOperating Temp Range-55C to 125C
Package TypeCSMDMountingSurface Mount
Housing MaterialCeramicOperating Temperature ClassificationMilitary
Lead Free Status / RoHS StatusLead free / RoHS CompliantColor-
Other namesB1250TTR  
1
Page 1
2
Page 2
3
Page 3
Page 1/3

Download datasheet (304Kb)Embed
Next
Electrical Characteristics
Ampere
Model
Rating
Number
(A)
B0500T
0.500
B1250T
1.25
B2000T
2.0
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
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 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.
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*
Telefuse
SMD Power Cross Protection Fuse
Voltage
Typical
Volt-drop
Rating
Cold
@ 100 % In
(VRMS)
Resistance
(Volts)
(ohms)
max.
600
0.350
0.23
600
0.075
0.18
600
0.056
0.16
Lightning Surge Withstand Capabilities
Max. Rise/
Repetitions
Min. Decay
(µs)
Total
Each Polarity Voltage (V)
10/1000
50
25
10/360
50
25
2/10
20
10
10/360
10
5
2/10
2
1
8/20
2
1
Test Methods per GR-1089/TIA-968-A (FCC Pt. 68)
AC Power Fault Tests
Short
GR-1089
Circuit
1st Level
Voltage Current
Test
(VRMS)
(A)
1
50
0.33
2
100
0.17
200,400,
3
1
600
4
1000
1
6
600
0.5
7
440
2.2
8
600
3
9
1000
5
AC Current Limiting Protector Tests/Fusing Coordination Tests
Voltage
Current
(Vac)
(A)
Duration
600
2.2
600
2.6
600
3.0
600
3.75
600
5
600
7
Up to 15 Min.
600
10
600
12.5
600
20
600
25
600
30
Melting I 2 T
Melting I 2 T
< 10 msec
@ 10 In
(A 2 sec.)
(A 2 sec.)
2
2.3
14
17
33
37
Minimum
Minimum Withstand Peak Current (A)
Peak
B0500T
B1250T
1000
25
100
1000
30
125
2500
120
500
1000
30
125
5000
120
500
5000
75
300
Fuse Characteristics
Duration
B0500T
B1250T
Applications
1
15 min.
1
15 min.
60
1 sec.
Parts pass all 1st Level tests
60
1 sec.
1
30 sec.
5
2 sec.
Will open
5
1.1 sec.
Will open
5
0.4 sec.
Will open
Maximum Time for Fuse to Open (Seconds)
B0500T
B1250T
1.0
900
0.8
50
0.5
10
0.3
5
0.2
2
0.08
1
0.04
0.5
0.01
0.2
0.005
0.07
0.004
0.04
0.003
0.02
Maximum
Power
Dissipation
(W)
0.20
0.40
0.52
B2000T
120
150
600
150
600
350
B2000T
B2000T
Will not open
2000
100
10
3
2
0.7
0.3
0.1
0.07
0.05

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 ...