Ohmite 33Jxxx Series, 35Jxxx Series, 30Jxxx Series, 825JxxxH Series, RH3R0DBxxxJ Series Data Sheet
Page 1
High Energy Wirewound
1.5 / 38.1
33J: 0.593 / 15.1
35J: 1.000 / 25.4
30J: 1.900 / 46.8
33J: 0.218 / 5.5
35J: 0.343 / 8.7
30J: 0.406 / 10.3
33J: 20 ga.
35J: 18 ga.
30J: 18 ga.
RH3R0DBxxxJ: 0.612 / 15.545 0.273 / 6.934
0.226 / 5.740
825JxxxH: 1.938 / 49.23
1.080 / 27.43
0.546 / 13.87
in. / mm
Axial Terminal / Surface Mount / Heat Sinkable Packaging
Ohmite Manufacturing’s family of High Energy
Wirewound Resistors employ special winding techniques to maximize the effective joule rating of each
resistor. Most wirewound 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 substitution of resistance wire,
depending on material availability. 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 rating 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 wound so
as to maintain the tightest possible pitch (space
between windings) and thereby maximize the mass
of the resistive element. Since no wire substitutions
are allowed, and no abrasive adjusting is permitted
in this family, Ohmite can publish a fixed joule rating and fusing current for each part number in the
series.
This technique can be applied to any wirewound
product. In order to provide the broadest selection of
packaging, Ohmite has developed standard offerings
in three different package types-axial, SMD, and heat
sinkable. Other sizes and types can be quoted on
request, such as tubular power resistors.
SERIES SPECIFICATIONS
Series Type Watts Tolerance Voltage
33Jxxx Axial 3 5% 200
35Jxxx Axial 5 5% 460
30Jxxx Axial 10 5% 1000
825JxxxH Heat Sinkable 25 5% 520
RH3R0DBxxxJ Surface Mount 3 5% 200
DIMENSIONS
61
Page 2
Energy (J)
0
33J1R0
33J5R0
33J10R
33J15R
33J20R
33J25R
33J30R
33J50R
33J100
35J1R5
35J2R5
35J7R5
35J12R
35J18R
35J22R
35J36R
35J47R
35J75R
30J2R0
30J4R7
30J6R8
30J15R
30J27R
30J33R
30J50R
30J82R
30J100
30J150
20
40
60
80
100
120
140
160
180
Fusing Energy (J)
0
33J1R0
33J5R0
33J10R
33J15R
33J20R
33J25R
33J30R
33J50R
33J100
35J1R5
35J2R5
35J7R5
35J12R
35J18R
35J22R
35J36R
35J47R
35J75R
30J2R0
30J4R7
30J6R8
30J15R
30J27R
30J33R
30J50R
30J82R
30J100
30J150
100
200
300
400
500
600
700
Fusing Current (A)
0
33J1R0
33J5R0
33J10R
33J15R
33J20R
33J25R
33J30R
33J50R
33J100
35J1R5
35J2R5
35J7R5
35J12R
35J18R
35J22R
35J36R
35J47R
35J75R
30J2R0
30J4R7
30J6R8
30J15R
30J27R
30J33R
30J50R
30J82R
30J100
30J150
10
20
30
40
50
Energy (J)
0
-1R0H
-5R0H
-10RH
-25RH
-36RH
-47RH
-75RH
-100H
-150H
Fusing Energy (J)
825J-
Energy (J)
0
-R500J
-1R00J
-2R70J
-4R70J
-6R80J
-7R50J
-10R0J
-15R0J
-25R0J
-47R0J
-68R0J
-75R0J
RH3R0DB-
0
-1R0H
-5R0H
-10RH
-25RH
-36RH
-47RH
-75RH
-100H
-150H
825J-
Fusing Energy (J)
0
-R500J
-1R00J
-2R70J
-4R70J
-6R80J
-7R50J
-10R0J
-15R0J
-25R0J
-47R0J
-68R0J
-75R0J
RH3R0DB-
Fusing Current (A)
0
-1R0H
-5R0H
-10RH
-25RH
-36RH
-47RH
-75RH
-100H
-150H
825J-
Fusing Current (A)
0
-R500J
-1R00J
-2R70J
-4R70J
-6R80J
-7R50J
-10R0J
-15R0J
-25R0J
-47R0J
-68R0J
-75R0J
RH3R0DB-
10
20
30
40
50
60
50
100
150
200
250
5
10
15
20
25
30
35
40
45
2
4
6
8
10
12
14
0
10
20
30
40
50
60
5
10
15
20
25
30
35
High Energy Wirewound
Axial Terminal / Surface Mount / Heat Sinkable Packaging
PERFORMANCE CHARACTERISICS
62
(continued)
Page 3
High Energy Wirewound
Axial Terminal / Surface Mount / Heat Sinkable Packaging
ORDERING INFORMATION
Standard Part Numbers
Part Number Ohms Power (J) Energy (J) to fuse (A) fuse (W)
33J1R0 1 3 12.70 53.26 23.93 572.60
33J5R0 5 3 6.25 26.20 10.03 502.96
33J10R 10 3 4.94 20.73 7.08 501.70
33J15R 15 3 4.66 19.55 5.95 531.47
33J20R 20 3 3.91 16.40 5.00 500.45
33J25R 25 3 3.07 12.89 4.20 441.79
33J30R 30 3 2.97 12.46 3.92 460.80
33J50R 50 3 2.43 10.20 2.97 440.68
33J100 100 3 1.92 8.07 2.10 439.58
35J1R5 1.5 5 76.55 321.19 40.32 2438.48
35J2R5 2.5 5 64.65 271.23 31.59 2494.75
35J7R5 7.5 5 37.66 158.01 16.90 2141.89
35J12R 12 5 37.90 158.99 14.20 2420.25
35J18R 18 5 28.80 120.84 11.13 2228.50
35J22R 22 5 27.48 115.29 10.03 2213.02
35J36R 36 5 22.78 95.59 7.86 2222.93
35J47R 47 5 23.22 97.42 7.08 2358.00
35J75R 75 5 18.77 78.77 5.55 2309.77
30J2R0 2 10 162.30 680.93 47.98 4603.79
30J4R7 4.7 10 150.86 632.92 33.88 5395.94
30J6R8 6.8 10 137.27 575.91 28.47 5513.41
30J15R 15 10 119.76 502.47 20.11 6065.77
30J27R 27 10 85.27 357.74 14.20 5445.56
30J33R 33 10 65.54 274.98 11.93 4700.40
30J50R 50 10 62.45 262.03 10.03 5029.59
30J82R 82 10 51.90 217.74 7.86 5063.34
30J100 100 10 49.41 207.28 7.08 5017.03
30J150 150 10 46.61 195.54 5.95 5314.71
825J1R0H 1 25 51.04 214.12 40.32 1625.65
825J5R0H 5 25 39.92 167.49 20.11 2021.92
825J10RH 10 25 31.58 132.50 14.20 2016.87
825J25RH 25 25 19.64 82.40 8.43 1776.01
825J36RH 36 25 17.79 74.62 7.08 1806.13
825J47RH 47 25 18.71 78.49 6.60 2049.57
825J75RH 75 25 14.66 61.49 5.00 1876.69
825J100H 100 25 12.29 51.56 4.20 1767.15
825J150H 150 25 11.59 48.64 3.53 1872.00
RH3R0DBR500J 0.5 3 12.93 54.25 31.59 498.95
RH3R0DB1R00J 1 3 10.23 42.91 22.31 497.70
RH3R0DB2R70J 2.7 3 6.87 28.82 13.24 473.33
RH3R0DB4R70J 4.7 3 5.87 24.63 10.03 472.78
RH3R0DB6R80J 6.8 3 5.34 22.41 8.43 483.07
RH3R0DB7R50J 7.5 3 4.75 19.91 7.86 463.11
RH3R0DB10R0J 10 3 3.98 16.70 6.60 436.08
RH3R0DB15R0J 15 3 3.75 15.75 5.55 461.95
RH3R0DB25R0J 25 3 3.07 12.89 4.20 441.79
RH3R0DB47R0J 47 3 2.28 9.59 2.97 414.24
RH3R0DB68R0J 68 3 2.08 8.72 2.49 423.26
RH3R0DB75R0J 75 3 2.29 9.62 2.49 466.83
RoHS compliant product available; Add “E” suffix to part number to specify.
Energy Fusing Current Power to
Other values available, contact Ohmite for details.
63
Loading...