Ohmite’s Brown Devil
®
is a
small, exceptionally durable
power resistor. It features
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 Series
has a hollow-core construc-
tion, which accommodates
rigid mounting with brackets or
thru bolts.
Mounting brackets not
included with resistors.
SPECIFICATIONS
Material
Coating:
lead free vitreous
enamel.
Core:
Ceramic.
Terminals:
Tinned axial
Derating:
Linearly from
100% @ +25°C to 0% @
+350°C.
Electrical
Tolerance:
1Ω and over: ±5%
under 1Ω: ±10%
Power rating:
Based on
25°C free air rating.
Overload:
10 times rated
wattage for 5 seconds.
Temperature coefficient:
5Ω and under: ±400 ppm/°C
Above 5Ω: ±260 ppm/°C
To calculate max. amps:
use
the formula
√P/R.
Brown Devil
®
Vitreous Enamel Power
1.50 in. -0/+0.25
38.10 mm -0/+6.35
200 Series
C
D
L
Series
B5
B8
B12
B20
Wattage Ohms
5.25 0.1-20K
8.0
0.03-25K
12.0 0.08-51K
20.0 0.1-100K
FEATURES
• Rugged lead free vitreous enam-
el coating
• All-welded construction.
• Self supporting terminal mount-
ing option.
• Higher power ratings.
• Flame-resistant lead free vitre-
ous enamel coating.
• RoHS compliant product avail-
able. Add “E” suffix to part num-
ber to specify.
See page 36
for mounting hardware
Non-Inductive versions available. Insert “N” before tolerance code.
Example
- B5NJ10RE
Also available in low cost Centohm or Silicone coating. Consult Ohmite.
* Maximum Voltage is based on Ohm’s Law [V=√P*R] as limited by the resistance value of
specified product
Dimensions (in. /
mm)
Lead Max.
L
D
C
Gauge Volt.*
0.625 /
15.88
0.250 /
6.35
0.135 /
3.43
20
187
1.000 /
25.40
0.313 /
7.94
0.188 /
4.76
18
250
1.750 /
44.45
0.313 /
7.94
0.188 /
4.76
18
625
2.000 /
50.80
0.438 /
11.11
0.250 /
6.35
18
750
ORDERING INFO
Non-Inductive
Coating
Winding
Blank = Vitreous
Optional (blank
C = Centohm
S = Silicone
Wattage
= std. winding)
MADE-TO-ORDER PARTS
RoHS
Compliant
Non-Inductive Winding
Optional (blank
= std. winding)
Core Diameter
See “Core and
Terminal Selection”
RoHS
Compliant
½ ½
½
½ ½ ½ ½ ½
Series
Tolerance
F = 1%
H = 3%
J = 5%
K = 10%
Ohms
1R0 = 1
Ω
250 = 250
Ω
1K0 = 1,000
Ω
25K = 25,000
Ω
25K5 = 25,500
Ω
See web-
site for
custom
core info
200N8D5R000JE
Coating
200 = Vitreous
400 = Silicone
Ceramic
Wattage
3
5.25
8
12
20
Ohms
R500 = 0.500
Ω
1R00 = 1
Ω
250R = 250
Ω
1K00 = 1,000
Ω
25K0 = 25,000
Ω
25K5 = 25,500
Ω
Tolerance
F = 1%
H = 3%
J = 5%
K = 10%
S TA N D A R D PA RT N U M B E R S F O R 2 0 0 S E R I E S
Wattage
B5J–––
5.25
B8J–––
8
B12J–––
12
B20J–––
20
Ohmic value
Ohmic value
Part No.
Prefix
Suffix
–––R50E
–––1R0E
–––1R1E
–––1R2E
–––1R3E
–––1R5E
–––1R6E
–––1R8E
–––2R0E
–––2R2E
–––2R4E
–––2R7E
–––3R0E
–––3R3E
–––3R6E
–––3R9E
–––4R0E
–––4R3E
–––4R7E
–––5R0E
–––5R1E
–––5R6E
–––6R2E
–––6R8E
–––7R5E
–––8R2E
–––9R1E
–––10RE
–––11RE
–––12RE
–––13RE
–––15RE
–––16RE
–––18RE
Part No.
Prefix
Suffix
–––20RE
–––22RE
–––24RE
–––25RE
–––27RE
–––30RE
–––33RE
–––35RE
–––36RE
–––39RE
–––40RE
–––43RE
–––47RE
–––50RE
–––51RE
–––56RE
–––62RE
–––68RE
–––75RE
–––82RE
–––91RE
–––100E
–––110E
–––120E
–––125E
–––130E
–––150E
–––160E
–––180E
–––200E
–––220E
–––225E
–––240E
–––250E
Wattage
B5J–––
5.25
B8J–––
8
B12J–––
12
B20J–––
20
Ohmic value
Part No.
Prefix
Suffix
Wattage
B5J–––
5.25
B8J–––
8
B12J–––
12
B20J–––
20
Ohmic value
Part No.
Prefix
Suffix
Wattage
B5J–––
5.25
B8J–––
8
B12J–––
12
B20J–––
20
Ohmic value
Part No.
Prefix
Suffix
Wattage
B5J–––
5.25
B8J–––
8
B12J–––
12
B20J–––
20
0.5
1
1.1
1.2
1.3
1.5
1.6
1.8
2
2.2
2.4
2.7
3
3.3
3.6
3.9
4
4.3
4.7
5
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
25
27
30
33
35
36
39
40
43
47
50
51
56
62
68
75
82
91
100
110
120
125
130
150
160
180
200
220
225
240
250
270
300
330
350
360
390
400
430
450
470
500
510
560
600
620
650
680
700
750
800
820
900
910
1,000
1,100
1,200
1,250
1,300
1,500
1,600
1,750
1,800
2,000
2,200
–––270E
–––300E
–––330E
–––350E
–––360E
–––390E
–––400E
–––430E
–––450E
–––470E
–––500E
–––510E
–––560E
–––600E
–––620E
–––650E
–––680E
–––700E
–––750E
–––800E
–––820E
–––900E
–––910E
–––1K0E
–––1K1E
–––1K2E
–––1K25E
–––1K3E
–––1K5E
–––1K6E
–––1K75E
–––1K8E
–––2K0E
–––2K2E
2,250
2,400
2,500
2,700
2,750
3,000
3,300
3,500
3,600
3,900
4,000
4,300
4,500
4,700
5,000
5,100
5,600
6,000
6,200
6,800
7,000
7,500
8,000
8,200
8,500
9,000
9,100
10,000
11,000
12,000
12,500
13,000
13,500
15,000
–––2K25E
–––2K4E
–––2K5E
–––2K7E
–––2K75E
–––3K0E
–––3K3E
–––3K5E
–––3K6E
–––3K9E
–––4K0E
–––4K3E
–––4K5E
–––4K7E
–––5K0E
–––5K1E
–––5K6E
–––6K0E
–––6K2E
–––6K8E
–––7K0E
–––7K5E
–––8K0E
–––8K2E
–––8K5E
–––9K0E
–––9K1E
–––10KE
–––11KE
–––12KE
–––12K5E
–––13KE
–––13K5E
–––15KE
16,000
17,500
18,000
20,000
22,500
25,000
30,000
35,000
40,000
45,000
50,000
55,000
60,000
65,000
70,000
75,000
80,000
85,000
90,000
95,000
100,000
–––16KE
–––17K5E
–––18KE
–––20KE
–––22K5E
–––25KE
–––30KE
–––35KE
–––40KE
–––45KE
–––50KE
–––55KE
–––60KE
–––65KE
–––70KE
–––75KE
–––80KE
–––85KE
–––90KE
–––95KE
–––100KE
= Standard values; check
availability using the world-
wide inventory search at
www.ohmite.com
These values involve very fine
resistance wire and should not
be used in critical applications
without burn-in and/or thermal
cycling:
B5: 6.8K-20KΩ
B8: 12.5K-25KΩ
B12: 30K-51KΩ
B20: 22.5K-100KΩ
31
Ohmite Mfg. Co.
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Embedded System
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