Littelfuse 263 Series - Manual (Page 2)

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
PICO ® ll > Very Fast-Acting > 263 Series
Average Time Current Curves
100
10
1
0.1
0.01
0.001
1/16A
0.05 0.1 1 10 100
1/8A 1/4A 3/8A 1/2A 3/4A 1A 1 1/2A 2A 2 1/2A 3A 3 1/2A 4A 5A
TIME IN SEC
ONDS
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.