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E l e c t r o n i c O v e r c u r r e n t P r o t e c t i o n
UL/CSA Standard Axial Lead and Cartridge Fuses
5 x 20mm Series
Features
Specifications
5 x 20mm Medium-Acting Fuses
233 Series, Fast-Acting 235 Series,
and Time Lag Fuses 239 Series:
Approvals:
(233 Series)
MITI approved
•
•
•
Designed to UL/CSA/ANCE
248 standard
(235 Series)
MITI approved from 1A to 5A
Available in cartridge and axial
lead format
(239 Series)
MITI approved from 1A to 5A
Patented
Available in ratings of 0.200 to 5A
UL Recognized/CSA Certified
Electrical Characteristics
233/233xe Series
Opening Time
235/236 Series
Opening Time
238/239 Series
Opening Time
% of Ampere
Rating
Minimum / Maximum Minimum / Maximum Minimum / Maximum
110
135
200
110
135
4 hrs. / —
— / 1 hr.
— / 3 sec.
1 hr. / —
— / 1 hr.
4 hrs. / —
— / 1 hr.
— / 1 sec.
4 hrs. / —
— / 1 hr.
4 hrs. / —
— / 1 hr.
5 sec. / —
4 hrs. / —
— / 1 hr.
1 to 3.5A
4 to 6.3A
200
— / 3 sec.
— / 1 sec.
5 sec. / —
Dimensions
Ordering Information
233/233xe Series
(Medium-Acting)
235/236 Series
(Fast-Acting)
238/239 Series
(Time Lag)
233/235/239 Series 233xe/236/238 Series
.635
Nominal
Catalog Melting I2t
Number (A2 Sec.)
Nominal
Nominal
(.025")
Ampere
Rating
Catalog
Number
Melting I2t
(A2 Sec.)
Catalog Melting I2t
Number
—
(A2 Sec.)
—
20
(.787")
22.5
(.886")
40
(1.58")
5
5.25
(.207")
0.100
0.125
0.200
0.250
0.300
0.400
0.500
0.600
0.700
0.750
0.800
1
—
—
235.100
235.125
235.200
235.250
235.300
235.400
235.500
235.600
235.700
—
0.00160
0.00280
0.00890
0.0170
0.0330
0.0600
0.0710
0.115
0.160
—
(.197")
—
—
—
—
—
—
239.200
239.250
239.300
239.400
239.500
239.600
239.700
239.750
239.800
239 001
239 1.25
239 01.6
239 002
239 02.5
239 003
239 3.15
239 004
239 005
—
0.170
0.3508
0.630
1.53
—
—
—
—
—
—
—
—
2.04
—
—
2.48
—
—
4.23
—
—
5.57
—
—
235.800
235 001
235 1.25
235 01.6
235 002
235 02.5
235 003
—
0.260
0.480
1.12
7.77
0233 001
0233 1.25
0233 0.16
0233 002
0233 02.5
0233 003
0233 3.15
0233 03.5
0233 004
0233 005
0233 006
0233 06.3
2.03
3.48
6.31
10.2
17.5
27.0
30.6
37.3
53.0
92.4
135
156
11.60
20.05
31.25
51.95
81.85
133.0
131.5
278.0
311.0
—
1.25
1.6
2.08
2
2.72
2.5
5.59
3
8.62
3.15
3.5
—
—
—
4
235 004
235 005
235 006
—
17.60
28.15
48.60
—
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
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