Littelfuse BLF User Manual
Cartridge and Axial Lead Fuses
®
®
Laminated Body Fast-Acting Type > BLF Series
Pb
BLF Series Laminated Body Fast-acting Midget / 5AG Size Fuse
Description
Laminated tube BLF fuses offer safe and reliable protection
at a low price for its size, type and features. They are
suitable for control circuit and instrument protection in dry
(little to no humidity) locations.
Electrical Characteristics for Series
Agency Approvals
Agency Agency File Number Ampere Range
E10480 0.5A - 30A
LR 29862 0.5A - 30A
% of Ampere
Rating
100% 0-30 Until temp stabilizes
135% 0–30 1 hours, Maximum
200% 0-30 2 minutes, Maximum
Ampere Rating Opening Time
Electrical Specifications by Item
Ordering
Number
BLF .500
BLF 001
BLF 01.5
BLF 002
BLF 02.5
BLF 003
BLF 004
BLF 005
BLF 006
BLF 6.25
BLF 007
BLF 008
BLF 009
BLF 010
BLF 012
BLF 015
BLF 020
BLF 025
BLF 030
(A)
Max
Voltage
Rating
(V)
Interrupting
Rating
Amp
Rating
.500
250 10,000
1 .395 x x
1.5 .2191 x x
2.125xx
amperes
at rated
VAC.
2.5 .0946 x x
3 .0696 x x
4 .0432 x x
5 .0413 x x
6 .02842 x x
6.25 .02741 x x
7 .02282 x x
8 .01664 x x
9 .01364 x x
10 .0117 x x
12 .00920 x x
15 .00920 x x
20
125
25 .00378 x x
30 .00289 x x
Nominal
Cold
Resistance
(Ohms)
1.57 x x
.00528 x x
Agency
Approvals
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/BLF.html for current information.
13
Revised: February 18, 2009
BLF Series
Dimensions
1000
100
10
1
0.1
0.01
10
100
1000
0.1
1
TIME IN SECONDS
CURRENT IN AMPERES
Cartridge and Axial Lead Fuses
Laminated Body Fast-Acting Type > BLF Series
Average Time Current CurvesTemperature Rerating Curve
1000
100
10
1
TIME IN SECONDS
0.1
1/2A
4A
2A
2 1/2A
3A
1A
1 1/2
38.1
(1.50")
6 - 1/4A
5A
6A
7A
10.31
(.406")
0.01
0.1
1000
100
10
1
TIME IN SECONDS
1
CURRENT IN AMPERES
10
8A
9A
10A
12A
15A
20A
25A
100
30A
1000
BLF Series
0.01
14
Revised: February 18, 2009
0.1
0.1
1
CURRENT IN AMPERES
Please refer to www.littelfuse.com/series/BLF.html for current information.
10
Specifications are subject to change without notice.
100
1000
©2009 Littelfuse, Inc.
.
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