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| 型号： | 004.DR |
| 元件分类： | 保险丝 |
| 英文描述： | ELECTRIC FUSE, 4A, 75VAC, 75VDC, 50A (IR), SURFACE MOUNT |
| 封装： | HALOGEN FREE AND ROHS COMPLIANT |
| 文件页数： | 2/4页 |
| 文件大小： | 261K |
| 代理商： | 004.DR |
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
70
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
NANO2 > 458 Series 1206 Size Inrush Withstand Fuse
458 Series
Please refer to www.littelfuse.com/series/458.html for current information.
Average Time Current Curves
Reflow Condition
Pre Heat
-Temperature Min (T
s(min))
-Temperature Max (T
s(max))
-Time (Min to Max) (t
s)
Average ramp up rate (LiquidusTemp
(T
L) to peak
T
S(max) to TL - Ramp-up Rate
Reflow
-Temperature (T
L) (Liquidus)
-Temperature (t
L)
PeakTemperature (T
P)
Time within 5°C of actual peak
Temperature (t
p)
Ramp-down Rate
Time 25°C to peakTemperature (T
P)
Do not exceed
Soldering Parameters
Temperature Rerating Curve
Time
T
e
mperature
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
(t 25C to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
TL to TP
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