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參數資料
型號: 04401.25WR
元件分類: 保險絲
英文描述: ELECTRIC FUSE, 1.25A, 50VAC, 50VDC, 50A (IR), SURFACE MOUNT
封裝: HALOGEN FREE AND ROHS COMPLIANT
文件頁數: 2/3頁
文件大小: 637K
代理商: 04401.25WR
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PDF資料
PDF描述
0440670201 2 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SOLDER
0440670401 4 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SOLDER
0440670402 4 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SOLDER
0440670403 4 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SOLDER
0440670601 6 CONTACT(S), MALE, STRAIGHT TWO PART BOARD CONNECTOR, SOLDER
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