參數(shù)資料
型號(hào): 0435.250KRHFS
元件分類: 保險(xiǎn)絲
英文描述: VERY FAST BLOW ELECTRIC FUSE, 0.25A, 32VDC, 35A (IR), SURFACE MOUNT
封裝: HALOGEN FREE AND ROHS COMPLIANT
文件頁數(shù): 2/4頁
文件大小: 651K
代理商: 0435.250KRHFS
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
46
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
435 Series
Thin Film > 0402 Size > Very Fast-Acting > 435 Series
Please refer to www.littelfuse.com/series/435.html for current information.
Average Time Current Curves
0.001
0.01
0.1
1
10
100
0.1
1.0
10.0
100.0
TIME
IN
SECONDS
CURRENT IN AMPERES
1.5A
1.25A
1.75A 2A 2.5A
3A
3.5A 4A 5A
1A
.25A
.375
A
.5
A
.75A
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)
60–120secs
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
Temperature Rerating Curve
Wave Soldering
260°C,10secondsmax.
Note:
1. Deratingdepictedinthiscurveisinadditiontothestandardderatingof25%for
continuousoperation.
Example:
Forcontinuousoperationat70degreescelsius,thefuseshouldbederatedasfollows:
I=(0.75)(0.80)I
RAT=(0.60)IRAT
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
相關(guān)PDF資料
PDF描述
0435.250KR FAST BLOW ELECTRIC FUSE, 0.25A, 32VDC, 35A (IR), SURFACE MOUNT
0435.375KR FAST BLOW ELECTRIC FUSE, 0.375A, 32VDC, 35A (IR), SURFACE MOUNT
0435.500KR FAST BLOW ELECTRIC FUSE, 0.5A, 32VDC, 35A (IR), SURFACE MOUNT
0435.750KR FAST BLOW ELECTRIC FUSE, 0.75A, 32VDC, 35A (IR), SURFACE MOUNT
0435001.KR FAST BLOW ELECTRIC FUSE, 1A, 32VDC, 35A (IR), SURFACE MOUNT
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