Axial lead & cartridge fuses, Average time current curves – Littelfuse 314 Series User Manual
Page 2
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
3AB > Fast-Acting > 314/324 Series
Average Time Current Curves
1000
100
10
1
0.1
0.01
0.1
1
10
100
1000
.375A .50
0A
.750A 1A
2A 3A 4A 5A 6A 7A 8A 10
A
12
A
15
A
20A 25A 30A 40A
TIme IN SeCONDS
CuRReNT IN AmpeReS
Temperature Rerating Curve
Soldering Parameters - Wave Soldering
Dwell Time
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
Time (Seconds)
Temperature (°C) - Measured on bottom side of board
Cooling Time
Preheat Time
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: