Introduction to Circuit Protection

Introduction to Circuit Protection

Transientology

© 2012 Littelfuse, Inc.

Specifications are subject to change without notice.

Axial Lead & Cartridge Fuses

473 Series

Please refer to www.littelfuse.com/series/473.html for current information.

Average Time Current Curves

1000

100

10

1

0.1

0.01

1000

100

10

1

0.1

CURRENT IN AMPERES

Temperature Rerating Curve

Soldering Parameters

Wave Parameter

Lead-Free Recommendation

Preheat:

100

150

60-180 seconds

Solder Pot Temperature:

260

°

Solder Dwell Time:

2-5 seconds

Recommended Hand-Solder Parameters:

Note: These devices are not recommended for IR or

Convection Reflow process.

Recommended Process Parameters:

continuous operation.