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| 型號(hào)： | 04671.75NRHF |
| 元件分類： | 保險(xiǎn)絲 |
| 英文描述： | VERY FAST BLOW ELECTRIC FUSE, 1.75A, 32VAC, 32VDC, 35A (IR), SURFACE MOUNT |
| 封裝： | HALOGEN FREE AND ROHS COMPLIANT |
| 文件頁(yè)數(shù)： | 2/3頁(yè) |
| 文件大小： | 589K |
| 代理商： | 04671.75NRHF |
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
42
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
467 Series
Thin Film > 0603 Size > Very Fast-Acting > 467 Series
Please refer to www.littelfuse.com/series/467.html for current information.
Average Time Current Curves
TIME
IN
SECONDS
CURRENT IN AMPERES
0.01
0.1
1
10
100
10
100
0.001
3.50
A
3.00
A
2.50
A
2.00
A
1.75
A
1.50
A
1.25
A
1.00
A
0.750
A
0.500
A
0.375
A
0.250
A
4.00
A
5.00
A
Temperature Rerating Curve
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)
60–180secs
Average ramp up rate (liquidusTemp
(T
l) to peak
5°C/secondmax
T
S(max) to Tl - ramp-up rate
5°C/secondmax
reflow
-Temperature (T
l) (liquidus)
217°C
-Temperature (t
l)
60–150seconds
peakTemperature (T
p)
250+0/-5°C
Time within 5°c of actual peak
Temperature (t
p)
20–40seconds
ramp-down rate
5°C/secondmax
Time 25°c to peakTemperature (T
p)
8minutesMax.
Do not exceed
260°C
Soldering Parameters
Wave Soldering
260°C,10secondsmax.
Note:
1. Deratingdepictedinthiscurveisinadditiontothestandardderatingof25%for
continuousoperation.
Example:
Forcontinuousoperationat70degreescelsius,thefuseshouldbederatedasfollows:
I=(0.75)(0.80)I
RAT=(0.60)IRAT
2.Thetemperaturederatingcurverepresentsthenominalconditions.Forquestions
abouttemperaturederatingcurve,pleaseconsultLittelfusetechnicalsupport
forassistance.
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
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