参数资料
| 型号： | B1250T |
| 厂商： | Bourns Inc. |
| 文件页数： | 1/3页 |
| 文件大小： | 0K |
| 描述： | FUSE TELECOM 1.25A 600V SMD |
| 标准包装： | 1 |
| 系列： | Telefuse™ |
| 保险丝类型： | 电源交扰/势垒网络 |
| 电压 - 额定： | 600VAC |
| 电流： | 1.25A |
| 封装/外壳： | 2-SMD，方形端块 |
| 尺寸/尺寸： | 0.380" L x 0.120" W x 0.125" H（9.65mm x 3.05mm x 3.18mm） |
| 安装类型： | 支座/表面贴装 |
| 工作温度： | -55°C ~ 125°C |
| DC 抗冷流： | 0.075 欧姆 |
| 熔化 I²t： | 14 |
| 其它名称： | B1250TDKR |
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
Electrical Characteristics
Ampere
Voltage
Typical
Volt-drop
Melting I2T
Melting I2T
Maximum
Model
Number
Rating
(A)
Rating
(VRMS)
Cold
Resistance
@ 100 % In
(Volts)
< 10 msec
(A2 sec.)
@ 10 In
(A2 sec.)
Power
Dissipation
(ohms)
max.
(W)
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
Max. Rise/
Repetitions
Minimum
Minimum Withstand Peak Current (A)
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,
Min. Decay
( μ s)
10/1000
10/360
2/10
10/360
2/10
8/20
Total
50
50
20
10
2
2
Peak
Each Polarity Voltage (V)
25 1000
25 1000
10 2500
5 1000
1 5000
1 5000
B0500T
25
30
120
30
120
75
B1250T
100
125
500
125
500
300
B2000T
120
150
600
150
600
350
Test Condition B (48 hrs.)
Insulation Resistance ........MIL-STD-202,
Method 302, Test Condition A
(after opening)
Test Methods per GR-1089/TIA-968-A (FCC Pt. 68)
AC Power Fault Tests
10,000 ohms minimum
Solderability ..MIL-STD-202, Method 208
Resistance to Solder Heat
..................MIL-STD-202, Method 210,
Short
GR-1089 Circuit
1st Level Voltage Current
Test (VRMS) (A)
Applications Duration
Fuse Characteristics
B0500T B1250T B2000T
Test Condition J (235 °C, 30 sec.)
1
50
0.33
1 15 min.
Physical Characteristics
Body Material
2
3
100
200,400,
600
0.17
1
1 15 min.
60 1 sec.
Parts pass all 1st Level tests
..........Ceramic with tin plated brass caps
Solder ............................................Lead free
4
6
1000
600
1
0.5
60
1
1 sec.
30 sec.
Solder Reflow Temperature
..............................240 ° C for 30 seconds
260 ° C for 3 seconds
7
8
9
440
600
1000
2.2
3
5
5
5
5
2 sec.
1.1 sec.
0.4 sec.
Will open
Will open
Will open
Packaging ..............2,000 pcs. per 13 ” reel
AC Current Limiting Protector Tests/Fusing Coordination Tests
Maximum Time for Fuse to Open (Seconds)
Voltage
Current
(Vac)
600
(A)
2.2
Duration
B0500T
1.0
B1250T
900
B2000T
Will not open
Asia-Pacific:
TEL +886- (0)2 25624117
FAX +886- (0)2 25624116
Europe:
600
600
600
600
2.6
3.0
3.75
5
0.8
0.5
0.3
0.2
50
10
5
2
2000
100
10
3
TEL +41-41 7685555
FAX +41-41 7685510
The Americas:
TEL +1-951 781-5500
FAX +1-951 781-5700
www.bourns.com
600
600
600
600
600
600
7
10
12.5
20
25
30
Up to 15 Min.
0.08
0.04
0.01
0.005
0.004
0.003
1
0.5
0.2
0.07
0.04
0.02
2
0.7
0.3
0.1
0.07
0.05
*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.
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