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參數(shù)資料
| 型號： | 0448.750MR |
| 元件分類： | 保險絲 |
| 英文描述： | FAST BLOW ELECTRIC FUSE, 0.75A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT |
| 封裝： | ROHS COMPLIANT |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 170K |
| 代理商： | 0448.750MR |
51
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
448 Series
NANO2 > Very Fast-Acting > 448 Series
Please refer to www.littelfuse.com/series/448.html for current information.
448
Series
Average Time Current Curves
Reflow Condition
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)
250+0/-5
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, 10
seconds max.
Soldering Parameters
Temperature Rerating Curve
0.001
0.01
0.1
1
10
100
0
1
0
1
0
1
.
0
CURRENT IN AMPS
TIME
IN
SECONDS
.062
A
.080
A
.100
A
.12
5
A
.160
A
.200
A
.2
5
0
A
.31
5
A
.37
5
A
.40
A
.5
0
A
.63
A
.7
5
A
.80
A
1.00
A
1.2
5
A
1.
5
0
A
1.60
A
2.00
A
2.
5
0
A
3.00
A
3.1
5
A
3.
5
0
A
4.00
A
5
.00
A
6.30
A
7
A
8
A
10
A
12
A
1
5
A
continuous operation.
Time
T
emperature
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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