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441 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Surface Mount Fuses - Littelfuse

भाग संख्या 441
समारोह Surface Mount Fuses
मैन्युफैक्चरर्स Littelfuse 
लोगो Littelfuse लोगो 
पूर्व दर्शन
1 Page
		
<?=441?> डेटा पत्रक पीडीएफ

441 pdf
Surface Mount Fuses
Ceramic Fuse > 441 Series
Temperature Re-rating Curve
Average Time Current Curves
140
120
100
80
60
40
-65 -45 -25
-5
15 35 55 75 95 115 135 155
TEMPERATURE (°C)
Note:
1. Re-rating depicted in this curve is in addition to the standard re-rating of 20% for
continuous operation.
For continuous operation at 75 degrees celsius, the fuse should be rerated as follows:
I = (0.80)(0.85)IRAT = (0.68)IRAT
100
10
1
0.1
0.01
0.001
1
10
CURRENT IN AMPERES
100
Soldering Parameters
Reflow Condition
Pb – free assembly
- Temperature Min (Ts(min))
Pre Heat - Temperature Max (Ts(max))
- Time (Min to Max) (ts)
Average Ramp-up Rate (LiquidusTemp
(TL) to peak)
TS(max) to TL - Ramp-up Rate
Reflow
-Temperature (TL) (Liquidus)
- Temperature (tL)
Peak Temperature (TP)
Time within 5°C of actual peak
Temperature (tp)
Ramp-down Rate
Time 25°C to peakTemperature (TP)
Do not exceed
150°C
200°C
60 – 180 seconds
3°C/second max.
5°C/second max.
217°C
60 – 150 seconds
260+0/-5 °C
10 – 30 seconds
6°C/second max.
8 minutes max.
260°C
Wave Soldering
260°C, 10 seconds max.
TP
TL
TS(max)
Ramp-up
TS(min)
Preheat
tS
25
time to peak temperature
(t 25ºC to peak)
tP
Critical Zone
TL to TP
tL
Ramp-down
Time
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/15/18

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डाउनलोड[ 441 Datasheet.PDF ]


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