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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Radial Lead Fuses
TE > Time-Lag Fuse > 804 Series
Average Time Current CurvesTemperature Re-rating 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:
0%
20%
40%
60%
80%
100%
120%
140%
-55 -30 -5 20 45 70 95 120
AMBIENTTEMPERATURE(°C)
PERCENT OF RATING
804 RE-RATING CURVE
804 DE-RATING CURVE
CURRENT [A]
Blowtime [sec].
0.1110 10
01
000
0.8A
1A
1.25A
1.6A
2A
2.5A
3.15A
4A
5A
6.3A
0.010
0.001
0.100
1.000
10.000
100.000
1000.000
Note:
1. Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.