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0453.250MR Datasheet(PDF) 3 Page - Littelfuse

No. de Pieza. 0453.250MR
Descripción  Surface Mount Fuses NANO2 > Very Fast-Acting > 451/453 Series
Descarga  4 Pages
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Fabricante  LITTELFUSE [Littelfuse]
Página de inicio  http://www.littelfuse.com
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0453.250MR Datasheet(HTML) 3 Page - Littelfuse

   
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© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
451/453 Series
NANO> Very Fast-Acting > 451/453 Series
Please refer to www.littelfuse.com/series/451.html
or /453.html for current information.
Average Time Current Curves
Reflow Condition
Pb – Free assembly
Pre Heat
- Temperature Min (T
s(min))
150°C
- Temperature Max (T
s(max))
200°C
- Time (Min to Max) (t
s)
60 – 120 secs
Average ramp up rate (Liquidus Temp
(T
L) to peak
5°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 – 90 seconds
Peak Temperature (T
P)
250+0/-5 °C
Time within 5°C of actual peak
Temperature (t
p)
20 – 40 seconds
Ramp-down Rate
5°C/second max.
Time 25°C to peak Temperature (T
P)
8 minutes max.
Do not exceed
260°C
Soldering Parameters
Temperature Rerating Curve
1000.000
100
10
1
0.1
0.01
0.001
0.05 0.1
110100
1000
CURRENT IN AMPERES
Note:
1.Deratingdepictedinthiscurveisinadditiontothestandardderatingof25%for
continuous operation.
Wave Soldering Parameters
260°CPeak
Temperature,
10 seconds max.
Time
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
(t 25ºC to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
TL to TP


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