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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Radial Lead Fuses
TE5
®
> Fast Acting Fuse > 391 Series
Average Time Current Curves
CURRENT IN AMPERES
TIME IN SECONDS
0.001
0.010
0.100
1
10
100
1000
10000
100000
1 10 100 10000.20
0.125A
0.160A
0.200A
0.250A
0.315A
0.400A 0.500A 0.630A
0.800A
1.00A 1.25A 1.60A
2.00A
2.50A 3.15A
4.00A
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:
Temperature Re-rating Curve
0
20
40
60
80
100
120
140
-40-20 020406080
AMBIENTTEMPERATURE(°C)
PERCENT OF RATING
23°C
Note:
1. Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.