Axial lead & cartridge fuses, Average time current curves, Soldering parameters - wave soldering – Littelfuse 215 Series User Manual
Page 3: Wave parameter lead-free recommendation preheat, Temperature minimum: 100, Ctemperature maximum: 150, C maximum solder dwell time: 2-5 seconds
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/21/14
Axial Lead & Cartridge Fuses
5×20 mm > Time-Lag > 215 Series
Average Time Current Curves
100
1000
10000
10
1
0.1
0.01
0.001
0.1
1
10
100
1000
.1
60
A
.1
25
A
.20
0
A
.250
A
.31
5
A
.40
0
A
.50
0
A
.630
A
.80
0
A
TIME IN SECONDS
CURRENT IN AMPERES
100
1000
10000
10
0.1
0.01
0.001
0.1
1
10
100
1000
TIME IN SECONDS
CURRENT IN AMPERES
1.
00
A
1.25
A
2.0
0
A
2.50
A
1.60
A
3.1
5
A
4.0
0
A
5.0
0
A
6.30
A
8.0
0
A
10.0
A
12.0
A
15.0
A
16.0
A
20.0
A
T-C Curves for 125mA to 800mA only
T-C Curves for 1A to 20A only
100
1000
10000
10
1
0.1
0.01
0.001
0.1
1
10
100
1000
.1
60
A
.1
25
A
.20
0
A
.250
A
.31
5
A
.40
0
A
.50
0
A
.630
A
.80
0
A
TIME IN SECONDS
CURRENT IN AMPERES
100
1000
10000
10
0.1
0.01
0.001
0.1
1
10
100
1000
TIME IN SECONDS
CURRENT IN AMPERES
1.
00
A
1.25
A
2.0
0
A
2.50
A
1.60
A
3.1
5
A
4.0
0
A
5.0
0
A
6.30
A
8.0
0
A
10.0
A
12.0
A
15.0
A
16.0
A
20.0
A
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:
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:
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: