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参数资料
| 型号： | 0434.250NR |
| 元件分类： | 保险丝 |
| 英文描述： | VERY FAST BLOW ELECTRIC FUSE, 0.25A, 32VAC, 32VDC, 50A (IR), SURFACE MOUNT |
| 文件页数： | 2/3页 |
| 文件大小： | 169K |
| 代理商： | 0434.250NR |
32
Revision: February 13, 2008
Surface Mount Fuses
2008 Littelfuse, Inc.
Specications are subject to change without notice.
Please refer to www.littelfuse.com for the most current information
Thin Film > 0603 Size > Very Fast Acting > 434 Series
434 Series
Average Time Current Curves
TIME
IN
SECONDS
CURRENT IN AMPERES
0.01
0.1
1
10
100
10
100
0.001
3A
2.5A
2A
1.5A
1A
.75A
.5A
.375A
.25A
3.5A 4A 5A
.68A
Reow Condition
Pb – Free assembly
Pre Heat
-Temperature Min (T
s(min))
150°C
-Temperature Max (T
s(max))
200°C
-Time (Min to Max) (t
s)
60 – 180 secs
Average ramp up rate (LiquidusTemp
(T
L) to peak
5°C/second max
T
S(max) to TL - Ramp-up Rate
5°C/second max
Reow
-Temperature (T
L) (Liquidus)
217°C
-Temperature (t
L)
60 – 150 seconds
PeakTemperature (T
P)
250+0/-5 °C
Time within 5°C of actual peak
Temperature (t
p)
20 – 40 seconds
Ramp-down Rate
5°C/second max
Time 25°C to peakTemperature (T
P)
8 minutes Max.
Do not exceed
260°C
Soldering Parameters - Wave Soldering
Temperature Rerating Curve
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