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© 2009 Littelfuse, Inc.

Specifications are subject to change without notice.

Axial Lead & Cartridge Fuses

239 Series

5×20 mm > Time Lag > 239 Series

Please refer to www.littelfuse.com/series/239.html for current information.

Average Time Current Curves

Temperature Rerating Curve

CURRENT IN AMPERES

10000

1000

100

10

1

0.1

0.01

0.01

1

10

100

1000

0.001

Soldering Parameters - Wave Soldering

Dwell Time

0

20

40

60

80

100

120

140

160

180

200

220

240

260

280

300

Time (Seconds)

Cooling Time

Preheat Time

Wave Parameter

Lead-Free Recommendation

Preheat:

100

150

Solder PotTemperature:

260

°

Solder DwellTime:

Recommended Hand-Solder Parameters:

Note: These devices are not recommended for IR or

Convection Reflow process.

Recommended Process Parameters: