Littelfuse 239 Series Bedienungsanleitung PDF herunterladen (Seite 3)

Speciﬁcations are subject to change without notice.

Revised: 12/26/13

Axial Lead & Cartridge Fuses

5×20 mm > Time Lag > 239 Series

Average Time Current CurvesTemperature Rerating Curve

CURRENT IN AMPERES

10000

0.200A

0.250A

0.300A

0.400A

0.500A

0.600A

0.700A

0.750A

0.800A

1.25A

1.6A

2.5A

3.15A

1000

100

0.1

0.01

0.1 110100 1000

0.001

TIME IN SECONDS

Soldering Parameters - Wave Soldering

Dwell Time

100

120

140

160

180

200

220

240

260

280

300

100

110

120

130

140

150

160

170

180

190

200

210

220

230

240

Time (Seconds)

Temperature (°C) - Measured on bottom side of board

Cooling Time

Preheat Time

Wave Parameter Lead-Free Recommendation

Preheat:

(DependsonFluxActivationTemperature)

(TypicalIndustryRecommendation)

TemperatureMinimum:

100

° C

TemperatureMaximum:

150

° C

PreheatTime: 60-180seconds

Solder Pot Temperature:

260

° CMaximum

Solder Dwell Time: 2-5seconds

Recommended Hand-Solder Parameters:

SolderIronTemperature:350°C+/-5°C

HeatingTime:5secondsmax.

Note: These devices are not recommended for IR or

Convection Reﬂow process.

Recommended Process Parameters:

1 2 3 4

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