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參數(shù)資料
| 型號： | 0452.500NR |
| 元件分類： | 保險絲 |
| 英文描述： | TIME LAG BLOW ELECTRIC FUSE, 0.5A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT |
| 文件頁數(shù)： | 2/4頁 |
| 文件大小： | 176K |
| 代理商： | 0452.500NR |
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
62
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
452/454 Series
NANO2 > Slo-Blo > 452/454 Series
Please refer to www.littelfuse.com/series/452.html
or /454.html for current information.
Average Time Current Curves
Reflow Condition
Pb – Free assembly
Pre Heat
-Temperature Min (T
s(min))
-Temperature Max (T
s(max))
-Time (Min to Max) (t
s)
60 – 120 secs
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)
60 – 90 seconds
PeakTemperature (T
P)
Time within 5°C of actual peak
Temperature (t
p)
20 – 40 seconds
Ramp-down Rate
Time 25°C to peakTemperature (T
P)
8 minutes max.
Do not exceed
Wave Soldering Parameters
Temperature,
Soldering Parameters
Temperature Rerating Curve
Note:
continuous operation.
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
0.01
0.1
1
10
100
0.1
1
10
100
1000
TIME
IN
SECONDS
CURRENT IN AMPERES
375mA
500mA
1.00A
1.50A
2.00A
2.50A
3.00A
3.50A
4.00A
5.00A
7.00A
750mA
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