參數(shù)資料
型號： 0448.250MR
元件分類： 保險絲
英文描述： FAST BLOW ELECTRIC FUSE, 0.25A, 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： 0448.250MR
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
相關PDF資料
PDF描述
0448.315MR FAST BLOW ELECTRIC FUSE, 0.315A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
0448.375MR FAST BLOW ELECTRIC FUSE, 0.375A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
0448.400MR FAST BLOW ELECTRIC FUSE, 0.4A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
0448.500MR FAST BLOW ELECTRIC FUSE, 0.5A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
0448.630MR FAST BLOW ELECTRIC FUSE, 0.63A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
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