Axial lead & cartridge fuses, Pico, Ll > slo-blo – Littelfuse 473 Series User Manual
Page 2: 473 series
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© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
PICO
®
ll > Slo-Blo
®
> 473 Series
Average Time Current Curves
1000
100
10
1
0.1
0.01
1000
100
10
1
0.1
.375A .50A .75A 1.0A 1.5A 2.0A 2.5A 3.0A 3.5A 4.0A 5.0A 7.0A
TIME IN SECONDS
CURRENT IN AMPERES
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:
Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.