Littelfuse 267 Series PICO - Manual (Page 2)

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
PICO ® > Very Fast Acting > 265/266/267 Series
Average Time Current Curves
100
10
1
0.1
0.01
0.001
10 100 1000 0.1 1
TIME IN SECONDS
CURRENT IN AMPERES
1/1
6A
1/8A 1/4A 3/8A 1/2A 3/4A 1A 1 1/2A 2A 2 1/2A 3A 4A 5A 7A 10
A
15
A
Temperature Rerating Curve
Soldering Parameters\
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 10
0
11
0
12
0
13
0
14
0
15
0
16
0
17
0
18
0
19
0
20
0
21
0
22
0
23
0
24
0
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: 280 ° 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:
Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.