Littelfuse 471 Series - Manual (Page 2)

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
PICO ® ll > Time-Lag > 471 Series
Average Time Current Curves Temperature Rerating Curve
Soldering Parameters
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:
100
10
1
0.1
0.01
0.001
0.1 1 10 100 1000
0.5A 1A 1.5A 2A 2.5A 3A 4A 5A
TIME IN SEC
ONDS
CURRENT IN AMPERES
Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.