S TA N D A R D P A R T N U M B E R S f o R 3 0 S E R i E S
High Energy
Wirewound
Energy
(J)
Fusing
Current
Power to
fuse (W)
Part Number
Ohms
Power
Energy (J) to fuse (A)
33J1R0
33J5R0
33J10R
33J15R
33J20R
1
5
10
15
20
3
3
3
3
3
12.70
6.25
4.94
4.66
3.91
53.26
26.20
20.73
19.55
16.40
23.93
10.03
7.08
5.95
5.00
572.60
502.96
501.70
531.47
500.45
Axial Terminal / Surface Mount /
Heat Sinkable Packaging
33J25R
33J30R
33J50R
33J100
35J1R5
25
30
50
100
1.5
3
3
3
3
5
3.07
2.97
12.89
12.46
10.20
8.07
4.20
3.92
441.79
460.80
440.68
439.58
2438.48
2.43
2.97
1.92
2.10
33J: 0.593 / 15.1
35J: 1.000 / 25.4
30J: 1.900 / 46.8
76.55
321.19
40.32
in. / mm
1.5 / 38.1
35J2R5
35J7R5
35J12R
35J18R
35J22R
2.5
7.5
12
18
22
5
5
5
5
5
64.65
37.66
37.90
28.80
27.48
271.23
158.01
158.99
120.84
115.29
31.59
16.90
14.20
11.13
10.03
2494.75
2141.89
2420.25
2228.50
2213.02
33J: 0.218 / 5.5
35J: 0.343 / 8.7
30J: 0.406 / 10.3
33J: 20 ga.
35J: 18 ga.
30J: 18 ga.
35J36R
35J47R
35J75R
30J2R0
30J4R7
36
47
75
2
5
5
5
10
10
22.78
23.22
18.77
162.30
150.86
95.59
97.42
78.77
680.93
632.92
7.86
7.08
5.55
47.98
33.88
2222.93
2358.00
2309.77
4603.79
5395.94
825JxxxH: 1.938 / 49.23
0.546 / 13.87
4.7
30J6R8
30J15R
30J27R
30J33R
30J50R
6.8
15
10
10
10
10
10
137.27
119.76
85.27
65.54
62.45
575.91
502.47
357.74
274.98
262.03
28.47
20.11
14.20
11.93
10.03
5513.41
6065.77
5445.56
4700.40
5029.59
27
33
50
30J82R
82
100
150
1
10
10
10
25
25
51.90
49.41
46.61
51.04
39.92
217.74
207.28
195.54
214.12
167.49
7.86
7.08
5063.34
5017.03
5314.71
1625.65
2021.92
30J100
30J150
825J1R0H
825J5R0H
5.95
40.32
20.11
5
RH3R0DBxxxJ: 0.612 / 15.545
0.273 / 6.934
825J10RH
825J25RH
825J36RH
825J47RH
825J75RH
10
25
36
47
75
25
25
25
25
25
31.58
19.64
17.79
18.71
14.66
132.50
82.40
74.62
78.49
61.49
14.20
8.43
7.08
6.60
5.00
2016.87
1776.01
1806.13
2049.57
1876.69
825J100H
100
150
0.5
1
25
25
3
12.29
11.59
12.93
10.23
6.87
51.56
48.64
54.25
42.91
28.82
4.20
3.53
31.59
22.31
13.24
1767.15
1872.00
498.95
497.70
473.33
825J150H
RH3R0DBR500J
RH3R0DB1R00J
RH3R0DB2R70J
3
2.7
3
RH3R0DB4R70J
RH3R0DB6R80J
RH3R0DB7R50J
RH3R0DB10R0J
RH3R0DB15R0J
4.7
6.8
7.5
10
3
3
3
3
3
5.87
5.34
4.75
3.98
3.75
24.63
22.41
19.91
16.70
15.75
10.03
8.43
7.86
6.60
5.55
472.78
483.07
463.11
436.08
461.95
Type
Axial
Axial
Watts
3
5
Tolerance
5%
Voltage
200
460
33Jxxx
35Jxxx
5%
15
30Jxxx
825JxxxH
RH3R0DBxxxJ
Axial
Heat Sinkable
Surface Mount
10
25
3
5%
5%
5%
1000
520
200
RH3R0DB25R0J
RH3R0DB47R0J
RH3R0DB68R0J
RH3R0DB75R0J
25
47
68
75
3
3
3
3
3.07
2.28
2.08
2.29
12.89
9.59
8.72
9.62
4.20
2.97
2.49
2.49
441.79
414.24
423.26
466.83
RoHS compliant product available; Add “E” suffix to part number to specify.
Ohmite Manufacturing’s family
of High Energy Wirewound
Resistors employ special
winding techniques to maxi-
mize the effective joule rating
of each resistor. Most wire-
wound resistors are wound
with the objective of meeting
the stated power (wattage)
rating and keeping cost low
through the use of automatic
winding equipment. Typically,
manufacturers will allow sub-
stitution of resistance wire,
depending on material avail-
ability. On tight tolerance
wirewounds some type of
abrasive adjustment to the
resistance wire is often used
to maximize production yields.
Both of these procedures can
adversely affect the joule rat-
ing and fusing current of a
wirewound resistor, and this
is often the reason that the
manufacturer does not publish
a fixed joule rating.
Ohmite High Energy
Wirewounds are hand
wound in order to maintain
the tightest possible pitch
(space between windings) and
thereby maximize the mass of
the resistive element. Since no standard offerings in three
wire substitutions are allowed,
and no abrasive adjusting is
part number in the series.
This technique can be
applied to any wirewound
product. In order to provide the
broadest selection of packag-
ing, Ohmite has developed
different package types-axial,
SMD, and heat sinkable. Other
permitted in this family, Ohmite sizes and types can be quoted
can publish a fixed joule rating
and fusing current for each
on request, such as tubular
power resistors.
Check product availability
using the Worldwide Inventory
Search at ohmite.com
(continued)
50 Ohmite Mfg. Co.
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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