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Electronic Overcurrent Protection
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Glossary
UL/CSA Standard Axial Lead and Cartridge Fuses
5 x 20mm Series
Features
5 x 20mm Medium-Acting Fuses
233 Series, Fast-Acting 235 Series,
and Time Lag Fuses 239 Series:
•
•
•
Designed to UL/CSA/ANCE
248 standard
Available in cartridge and axial
lead format
Available in ratings of 0.200 to 5A
Specifications
Approvals:
(233 Series)
MITI approved
(235 Series)
MITI approved from 1A to 5A
(239 Series)
MITI approved from 1A to 5A
Patented
UL Recognized/CSA Certified
Electrical Characteristics
233/233xe Series
% of Ampere
Opening Time
Rating
Minimum / Maximum
110
4 hrs. / —
135
— / 1 hr.
200
— / 3 sec.
110
1 hr. / —
— / 1 hr.
135
200
— / 3 sec.
235/236 Series
Opening Time
Minimum / Maximum
4 hrs. / —
— / 1 hr.
— / 1 sec.
4 hrs. / —
— / 1 hr.
— / 1 sec.
238/239 Series
Opening Time
Minimum / Maximum
4 hrs. / —
— / 1 hr.
5 sec. / —
4 hrs. / —
— / 1 hr.
5 sec. / —
1 to 3.5A
4 to 6.3A
Dimensions
233/235/239 Series 233xe/236/238 Series
.635
(.025")
Ordering Information
233/233xe Series
(Medium-Acting)
Nominal
Catalog Melting I
2
t
Number (A
2
Sec.)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0233 001
2.03
0233 1.25
3.48
0233 0.16
6.31
0233 002
10.2
0233 02.5
17.5
0233 003
27.0
0233 3.15
30.6
0233 03.5
37.3
0233 004
53.0
0233 005
92.4
0233 006
135
0233 06.3
156
235/236 Series
(Fast-Acting)
Nominal
Catalog
Melting I
2
t
Number
(A
2
Sec.)
235.100
0.00160
235.125
0.00280
235.200
0.00890
235.250
0.0170
235.300
0.0330
235.400
0.0600
235.500
0.0710
235.600
0.115
235.700
0.160
—
—
235.800
0.260
235 001
0.480
235 1.25
1.12
235 01.6
2.08
235 002
2.72
235 02.5
5.59
235 003
8.62
—
—
—
—
235 004
17.60
235 005
28.15
235 006
48.60
—
—
238/239 Series
(Time Lag)
Nominal
Catalog Melting I
2
t
Number
(A
2
Sec.)
—
—
—
—
239.200
0.170
239.250
0.3508
239.300
0.630
239.400
1.53
239.500
2.04
239.600
2.48
239.700
4.23
239.750
5.57
239.800
7.77
239 001
11.60
239 1.25
20.05
239 01.6
31.25
239 002
51.95
239 02.5
81.85
239 003
133.0
239 3.15
131.5
239 004
278.0
239 005
311.0
—
—
—
—
—
—
5
(.197")
20
(.787")
5.25
(.207")
22.5
(.886")
40
(1.58")
Ampere
Rating
0.100
0.125
0.200
0.250
0.300
0.400
0.500
0.600
0.700
0.750
0.800
1
1.25
1.6
2
2.5
3
3.15
3.5
4
5
6
6.3
Note: For axial leads in 233 Series, add packaging suffix XE. For radial leads in 233 Series, add packaging suffix XW.
For tape and reel option in 233 Series, contact Littlefuse. For axial leads in 235 Series, change catalog number
from 235 to 236.
For axial leads in 239 Series, change catalog number from 239 to 238. All fuses listed are rated @ 250 VAC
Consult Littelfuse web site for more information
www.littelfuse.com
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