200 Series
Brown Devil® Vitreous Enamel Power
Ohmite’s Brown Devil® is a small, exceptionally
durable power resistor. It features all-welded construction and rugged, flame resistant conformal lead
free vitreous enamel coating to ensure successful
performance under high temperatures.
The wirewound 200 Series has a hollow-core construction, which accommodates rigid mounting with
brackets or thru bolts.
Mounting brackets not included with resistors.
F e at u r e s
• Rugged lead free vitreous enamel coating
• All-welded construction.
• Self supporting terminal mounting option.
• Higher power ratings.
• Flame-resistant lead free vitreous enamel coating.
• RoHS compliant product available. Add “E” suffix to
part number to specify.
S ERIE S S P ECI F ICATI O N S
Series Wattage
Ohms Lead Gauge Max. Voltage*
B5
5.25
0.1-20K
20
187
B8
8.0
0.03-25K
18
250
B12
12.0 0.08-51K
18
625
B20
20.0 0.1-100K
18
750
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
characteristics
Coating lead-free vitreous enamel
Core Ceramic
Terminals Tinned axial; RoHS solder composition is 96% Sn, 3.5%
Ag, 0.5% Cu
Derating Linearly from 100% @ +25°C to 0% @ +350°C
Tolerance 1Ω+: ±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
Max. amps To calculate, use the formula √P/R
(continued)
82
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200 Series
Brown Devil® Vitreous Enamel Power
d i m e ns i ons
(in. / mm)
1.50 in. -0/+0.25
38.10 mm -0/+6.35
Series
Wattage
L
D
C
B5
5.25
0.625 / 15.88
0.250 / 6.35
0.135 / 3.43
B12
12.0
0.313 / 7.94
0.188 / 4.76
B8
D
C
B20
L
8.0
1.000 / 25.40
0.313 / 7.94
20.0
2.000 / 50.80
0.438 / 11.11
1.750 / 44.45
Lead Gauge
0.188 / 4.76
0.250 / 6.35
20
18
18
18
o r d e r i n g i nfo r m a t i on
Standard Values
–––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
Coating
Non-Inductive
Blank = Vitreous
Winding
C = Centohm
Optional (blank
S = Silicone Wattage = std. winding)
Series
Tolerance
F = 1%
H = 3%
J = 5%
K = 10%
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
Part No.
Prefix
Suffix
16,000 –––16KE
17,500 –––17K5E
18,000 –––18KE
20,000 –––20KE
22,500 –––22K5E
25,000 –––25KE
30,000 –––30KE
35,000 –––35KE
40,000 –––40KE
45,000 –––45KE
50,000 –––50KE
55,000 –––55KE
60,000 –––60KE
65,000 –––65KE
70,000 –––70KE
75,000 –––75KE
80,000 –––80KE
85,000 –––85KE
90,000 –––90KE
95,000 –––95KE
100,000 –––100KE
= Standard values; check
availability 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
Made-to-order Parts
RoHS
Compliant
Ohms
1R0 = 1Ω
250 = 250Ω
1K0 = 1,000Ω
25K = 25,000Ω
25K5 = 25,500Ω
Non-Inductive Winding
Optional (blank
= std. winding)
Core Diameter
See “Core and
Terminal Selection”
RoHS
Compliant
200N8D5R000JE
Coating
200 = Vitreous
400 = Silicone
Ceramic
Wattage
3
5.25
8
12
20
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Ohms
R500 = 0.500Ω
1R00 = 1Ω
250R = 250Ω
1K00 = 1,000Ω
25K0 = 25,000Ω
25K5 = 25,500Ω
83
Tolerance
F = 1%
H = 3%
J = 5%
K = 10%
B5J––– 5.25
B8J––– 8
B12J––– 12
B20J––– 20
Ohmic value
B5J––– 5.25
B8J––– 8
B12J––– 12
B20J––– 20
Ohmic value
B5J––– 5.25
B8J––– 8
B12J––– 12
B20J––– 20
Ohmic value
B5J––– 5.25
B8J––– 8
B12J––– 12
B20J––– 20
B5J––– 5.25
B8J––– 8
B12J––– 12
B20J––– 20
Ohmic value
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
Part No.
Prefix
Suffix
Wattage
Part No.
Prefix
Suffix
Wattage
–––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
Wattage
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
Wattage
Part No.
Prefix
Suffix
Ohmic value
Wattage
See website for
custom
core info