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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Axial Lead & Cartridge Fuses
PICO
®
ll > Time-Lag Fuse > 471 Series
Average Time Current CurvesTemperature Re-rating 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
0.1 110 100 1000
0.5A 1A 1.5A 2A 2.5A 3A 4A 5A
TIME IN SECONDS
CURRENT IN AMPERES
Note:
Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.