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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Axial Lead & Cartridge Fuses
5×20 mm > Fast-Acting Fuse > 216SP Series
Average Time Current Curves
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:
0.001
0.01
0.1
1
10
100
1000
10000
0.01 0.1 1 10 100
Time (seconds)
Amps
1.6A 1A 2A 2.5A 3.15A 4A 5A 6.3A 8A 10A
Temperature Re-rating Curve
For the pigtailed fuse, please follow the recommendations
below for axial lead forming and mounting into PCB:
Lead forming:
The distance C between cap flat surface and axial lead shall
be greater than 1.0 mm.
PCB mounting:
According to the standard of IPC-A-610, the distance
between PCB and fuse cap is recommended to be a
minimum of 1.5 mm.
A
B
C
C
A
B
Different values of A and B available, please contact the Littelfuse sales representative in your region:
Note:
Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.