參數(shù)資料
型號: 044003.5WR
元件分類: 保險絲
英文描述: ELECTRIC FUSE, 3.5A, 32VAC, 32VDC, 50A (IR), SURFACE MOUNT
封裝: HALOGEN FREE AND ROHS COMPLIANT
文件頁數(shù): 2/3頁
文件大?。?/td> 637K
代理商: 044003.5WR
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
2
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
Please refer to www.littelfuse.com/series/440.html for current information.
440 Series
Ceramic Fuse > 440 Series
Average Time Current Curves
0.001
0.1
1.0
10.0
100.0
1000.
0.01
0.1
1
10
100
TIME
IN
SECONDS
CURRENT IN AMPERES
reflow condition
Pb-freeassembly
pre Heat
-Temperature min (T
s(min))
150°C
-Temperature max (T
s(max))
200°C
-Time (min to max) (t
s)
60 – 180 seconds
Average ramp-up rate (liquidusTemp
(T
l) to peak)
3°C/second max.
T
S(max) to Tl - ramp-up rate
5°C/second max.
reflow
-Temperature (T
l) (liquidus)
217°C
-Temperature (t
l)
60 – 150 seconds
peakTemperature (T
p)
260+0/-5 °C
Time within 5°c of actual peak
Temperature (t
p)
10 – 30 seconds
ramp-down rate
6°C/second max.
Time 25°c to peakTemperature (T
p)
8 minutes max.
Do not exceed
260°C
Soldering Parameters
Temperature Derating Curve
40
60
80
100
120
140
-65
-45
-25
-5
15
35
55
75
95
115
135 155
TEMPERATURE (°C)
P
E
R
C
E
N
T
O
F
R
A
T
IN
G
Time
Te
mperatur
e
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
Example:
For continuous operation at 75 degrees celsius, the fuse should be derated as follows:
I = (0.80)(0.85)I
RAT = (0.68)IRAT
Note:
1. Derating depicted in this curve is in addition to the standard derating of 20% for
continuous operation.
Wave Soldering
260°C, 10 seconds max.
相關(guān)PDF資料
PDF描述
04401.75WR ELECTRIC FUSE, 1.75A, 32VAC, 32VDC, 50A (IR), SURFACE MOUNT
0440.250WR ELECTRIC FUSE, 0.25A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
0440.375WR ELECTRIC FUSE, 0.375A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
0440.500WR ELECTRIC FUSE, 0.5A, 63VAC, 63VDC, 50A (IR), SURFACE MOUNT
0440.750WR ELECTRIC FUSE, 0.75A, 63VAC, 63VDC, 50A (IR), SURFACE MOUNT
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