Littelfuse 807 Series - Manual (Page 2)

Introduction to Circuit Protection Introduction to Circuit Protection
Transientology
2
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Radial Lead Fuses
Please refer to www.littelfuse.com/series/807.html for current information.
TE-UMF 807 Series
TE7 > Time Lag > 807 Series
Average Time Current Curves Temperature De-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:
­ i«i˜`ГКœ˜КХЭК
VМˆЫ>Мˆœ˜К/i“«iÀ>ÌÕÀi® ­/Þ«ˆV>К˜`ХГМАЮК,iVœ““i˜`>̈œ˜®
Temperature Minimum: 100 ˚ C
КККК/i“«iÀ>ÌÕÀiÊ >Эˆ“Х“\ 150 ˚ C
КККК*Аi i>ÌÊ/ˆ“i\ 60-180 seconds
Solder Pot Temperature: 260 ˚
Ê >Эˆ“Х“
Solder Dwell Time: 2-5 seconds
Recommended Hand-Solder Parameters:
Solder Iron Temperature: 350˚C ± 5˚C
i>Мˆ˜}К/ˆ“i\ÊÊxÊÃiVœ˜`Ãʓ>Эˆ“Х“
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
AMBIENT TEMPERATURE (°C)
PE
RCE
NT
O
F
RAT
IN
G
807 DE-RATING CURVE
CURRENT [A]
Blo
wtime [sec].
0.1 1 10 100 1000
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