Ohmite Mfg. Co.
Ohmite Mfg. Co.
1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
29
STOCK PART NUMBERS FOR STANDARD RESISTANCE VALUES
200 Series
Brown Devil
®
‚ Vitreous Enamel
Power Resistors
Ohmite’s Brown Devils
®
are
small, exceptionally durable
power resistors. They feature
all-welded construction and
rugged, flame resistant confor-
mal lead free vitreous enamel
coating to ensure successful
performance under high tem-
peratures.
The wirewound 200 Type
resistors have a hollow-core
construction, which accom-
modates rigid mounting with
brackets or thru bolts.
Mounting brackets not
included with resistors.
FEATURES
•
Rugged lead free vitreous enam-
el coating
•
All-welded construction.
•
Self supporting lead mounting
option.
•
Higher power ratings.
•
Flame-resistant lead free vitre-
ous enamel coating.
•
RoHS compliant product avail-
able Jan. 2006 Add “E” suffix to
part number to specify.
L
D
1.50 in. -0/+0.25
38.10 mm -0/+6.35
C
=
Most popular stock val-
ues
=
Stock values
=
Non-stock values subject
to minimum handling
charge per item
0.5
–––
KR50
1
–––
1R0
1.1
–––
1R1
1.2
–––
1R2
1.3
–––
1R3
1.5
–––
1R5
1.6
–––
1R6
1.8
–––
1R8
2
–––
2R0
2.2
–––
2R2
2.4
–––
2R4
2.7
–––
2R7
3
–––
3R0
3.3
–––
3R3
3.6
–––
3R6
3.9
–––
3R9
4
–––
4R0
4.3
–––
4R3
4.7
–––
4R7
5
–––
5R0
5.1
–––
5R1
5.6
–––
5R6
6.2
–––
6R2
6.8
–––
6R8
7.5
–––
7R5
8.2
–––
8R2
9.1
–––
9R1
10
–––
10R
11
–––
11R
12
–––
12R
13
–––
13R
15
–––
15R
16
–––
16R
18
–––
18R
20
–––
20R
22
–––
22R
24
–––
24R
25
–––
25R
27
–––
27R
30
–––
30R
33
–––
33R
35
–––
35R
36
–––
36R
39
–––
39R
40
–––
40R
43
–––
43R
47
–––
47R
50
–––
50R
51
–––
51R
56
–––
56R
62
–––
62R
68
–––
68R
75
–––
75R
82
–––
82R
91
–––
91R
100
–––
100
110
–––
110
120
–––
120
125
–––
125
130
–––
130
150
–––
150
160
–––
160
180
–––
180
200
–––
200
220
–––
220
225
–––
225
240
–––
240
250
–––
250
2,250
–––
2K25
2,400
–––
2K4
2,500
–––
2K5
2,700
–––
2K7
2,750
–––
2K75
3,000
–––
3K0
3,300
–––
3K3
3,500
–––
3K5
3,600
–––
3K6
3,900
–––
3K9
4,000
–––
4K0
4,300
–––
4K3
4,500
–––
4K5
4,700
–––
4K7
5,000
–––
5K0
5,100
–––
5K1
5,600
–––
5K6
6,000
–––
6K0
6,200
–––
6K2
6,800
–––
6K8
7,000
–––
7K0
7,500
–––
7K5
8,000
–––
8K0
8,200
–––
8K2
8,500
–––
8K5
9,000
–––
9K0
9,100
–––
9K1
10,000
–––
10K
11,000
–––
11K
12,000
–––
12K
12,500
–––
12K5
13,000
–––
13K
13,500
–––
13K5
15,000
–––
15K
16,000
–––
16K
17,500
–––
17K5
18,000
–––
18K
20,000
–––
20K
22,500
–––
22K5
25,000
–––
25K
30,000
–––
30K
35,000
–––
35K
40,000
–––
40K
45,000
–––
45K
50,000
–––
50K
55,000
–––
55K
60,000
–––
60K
65,000
–––
65K
70,000
–––
70K
75,000
–––
75K
80,000
–––
80K
85,000
–––
85K
90,000
–––
90K
95,000
–––
95K
100,000
–––
100K
22,500
2,750
3,900
45,000
5,000
70,000
6,800
95,000
8,500
12,000
Shaded values involve very
fine resistance wire and should
not be used in critical applica-
tions without burn-in and/or
thermal cycling.
Ohmic value
B5J
–––
5.25
B8J
–––
8
B12J
–––
12
B20J
–––
20
Wattage
Part No.
Prefix
Suffix
Ohmic value
B5J
–––
5.25
B8J
–––
8
B12J
–––
12
B20J
–––
20
Wattage
Part No.
Prefix
Suffix
Ohmic value
B5J
–––
5.25
B8J
–––
8
B12J
–––
12
B20J
–––
20
Wattage
Part No.
Prefix
Suffix
270
–––
270
300
–––
300
330
–––
330
350
–––
350
360
–––
360
390
–––
390
400
–––
400
430
–––
430
450
–––
450
470
–––
470
500
–––
500
510
–––
510
560
–––
560
600
–––
600
620
–––
620
650
–––
650
680
–––
680
700
–––
700
750
–––
750
800
–––
800
820
–––
820
900
–––
900
910
–––
910
1,000
–––
1K0
1,100
1,100
–––
1K1
1,200
–––
1K2
1,250
–––
1K25
1,300
–––
1K3
1,500
–––
1K5
1,600
1,600
–––
1K6
1,750
–––
1K75
1,800
–––
1K8
2,000
–––
2K0
2,200
–––
2K2
Ohmic value
B5J
–––
5.25
B8J
–––
8
B12J
–––
12
B20J
–––
20
Wattage
Part No.
Prefix
Suffix
Ohmic value
B5J
–––
5.25
B8J
–––
8
B12J
–––
12
B20J
–––
20
Wattage
Part No.
Prefix
Suffix
See page 34
for mounting hardware
Dimensions (in. /
mm
)
Lead
Series
Wattage
Ohms
Length
Diam.
Core
Gauge
Voltage
B5
B5
5.25
5.25
0.1-20K
0.1-20K
0.625 /
0.625 /
15.88
15.88
0.250 /
0.250 /
6.35
6.35
0.135 /
0.135 /
3.43
3.43
20
20
187
187
B8
8.0
0.03-25K
1.000 /
25.40
0.313 /
7.94
0.188 /
4.76
4.76 4.76
18
250
B12
12.0
12.0
0.08-51K
0.08-51K
1.750 /
1.750 /
44.45
44.45
0.313 /
0.313 /
7.94
7.94
0.188 /
0.188 /
4.76
4.76
4.76 4.76
18
18
625
625
B20
20.0
0.1-100K
2.000 /
50.80
0.438 /
11.11
0.250 /
6.35
6.35 6.35
18
750
Non-Inductive versions available. Insert “N” before tolerance code.
Example
- B5NJ10R
Also available in low cost Centohm coating. Consult Factory.
SPECIFICATIONS
Material
Coating:
lead free vitreous
enamel.
Core:
Ceramic.
Terminals:
Tinned axial lead.
Derating:
Linearly from
100% @ +25°C to 0% @
+350°C.
Electrical
Tolerance:
1
Ω
and over: ±5%
under 1
Ω
: ±10%
Power rating:
Based on 25°C free
air rating.
Overload:
10 times rated wattage
for 5 seconds.
Temperature coefficient:
5
Ω
and under: ±400 ppm/°C
Above 5
Ω
: ±260 ppm/°C
To calculate max. amps:
use the
formula
√
To calculate max. amps:
√
To calculate max. amps:
P/R.
