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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 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.
FEATURES
? RUGGED LEAD FREE VITREOUS ENAM-
EL COATING
? ALL-WELDED CONSTRUCTION.
? SELF SUPPORTING TERMINAL MOUNT-
ING OPTION.
? HIGHER POWER RATINGS.
SPECIFICATIONS
Material
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.
Electrical
Tolerance: 1 Ω +: ±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 √ P/R.
ORDERING INFO
200 Series
?
1.50 in. -0/+0.25
38.10 mm -0/+6.35
D C
L
Dimensions (in. / mm ) Lead Max.
Series Wattage Ohms L D C Gauge Volt.*
B5 5.25 0.1-20K 0.625 / 15.88 0.250 / 6.35 0.135 / 3.43 20 187
B8 8.0 0.03-25K 1.000 / 25.40 0.313 / 7.94 0.188 / 4.76 18 250
B12 12.0 0.08-51K 1.750 / 44.45 0.313 / 7.94 0.188 / 4.76 18 625
B20 20.0 0.1-100K 2.000 / 50.80 0.438 / 11.11 0.250 / 6.35 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
MADE-TO-ORDER PARTS
? 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
Coating Non-Inductive
Blank = Vitreous Winding
C = Centohm Optional (blank RoHS
S = Silicone Wattage = std. winding) Compliant
? ? ? ? ? ? ? ?
Series Tolerance Ohms
F = 1% 1R0 = 1 ?
H = 3% 250 = 250 ?
J = 5% 1K0 = 1,000 ?
K = 10% 25K = 25,000 ?
25K5 = 25,500 ?
See web-
site for
custom
core info
Non-Inductive Winding Core Diameter
OPTIONAL (BLANK SEE “CORE AND RoHS
= STD. WINDING) TERMINAL SELECTION” Compliant
200 N 8D5R000JE
Coating Wattage Ohms Tolerance
200 = VITREOUS 3 R500 = 0.500 ? F = 1%
400 = SILICONE 5.25 1R00 = 1 ? H = 3%
CERAMIC 8 250R = 250 ? J = 5%
12 1K00 = 1,000 ? K = 10%
20 25K0 = 25,000 ?
25K5 = 25,500 ?
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
Part No.
Prefix
Suffix
Wattage
Part No.
Prefix
Suffix
Wattage
Part No.
Prefix
Suffix
Wattage
Part No.
Prefix
Suffix
Wattage
Part No.
Prefix
Suffix
Wattage
0.5
1
1.1
––– R50E
––– 1R0E
––– 1R1E
20
22
24
––– 20RE
––– 22RE
––– 24RE
270
300
330
––– 270E
––– 300E
––– 330E
2,250
2,400
2,500
––– 2K25E
––– 2K4E
––– 2K5E
16,000
17,500
18,000
––– 16KE
––– 17K5E
––– 18KE
1.2
––– 1R2E
25
––– 25RE
350
––– 350E
2,700
––– 2K7E
20,000
––– 20KE
1.3
––– 1R3E
27
––– 27RE
360
––– 360E
2,750
––– 2K75E
22,500
––– 22K5E
1.5
1.6
1.8
2
––– 1R5E
––– 1R6E
––– 1R8E
––– 2R0E
30
33
35
36
––– 30RE
––– 33RE
––– 35RE
––– 36RE
390
400
430
450
––– 390E
––– 400E
––– 430E
––– 450E
3,000
3,300
3,500
3,600
––– 3K0E
––– 3K3E
––– 3K5E
––– 3K6E
25,000
30,000
35,000
40,000
––– 25KE
––– 30KE
––– 35KE
––– 40KE
2.2
––– 2R2E
39
––– 39RE
470
––– 470E
3,900
––– 3K9E
45,000
––– 45KE
2.4
––– 2R4E
40
––– 40RE
500
––– 500E
4,000
––– 4K0E
50,000
––– 50KE
2.7
––– 2R7E
43
––– 43RE
510
––– 510E
4,300
––– 4K3E
55,000
––– 55KE
3
3.3
3.6
3.9
––– 3R0E
––– 3R3E
––– 3R6E
––– 3R9E
47
50
51
56
––– 47RE
––– 50RE
––– 51RE
––– 56RE
560
600
620
650
––– 560E
––– 600E
––– 620E
––– 650E
4,500
4,700
5,000
5,100
––– 4K5E
––– 4K7E
––– 5K0E
––– 5K1E
60,000
65,000
70,000
75,000
––– 60KE
––– 65KE
––– 70KE
––– 75KE
4
––– 4R0E
62
––– 62RE
680
––– 680E
5,600
––– 5K6E
80,000
––– 80KE
4.3
4.7
––– 4R3E
––– 4R7E
68
75
––– 68RE
––– 75RE
700
750
––– 700E
––– 750E
6,000
6,200
––– 6K0E
––– 6K2E
85,000
90,000
––– 85KE
––– 90KE
5
5.1
––– 5R0E
––– 5R1E
82
91
––– 82RE
––– 91RE
800
820
––– 800E
––– 820E
6,800
7,000
––– 6K8E
––– 7K0E
95,000
100,000
––– 95KE
––– 100KE
5.6
6.2
6.8
7.5
––– 5R6E
––– 6R2E
––– 6R8E
––– 7R5E
100
110
120
125
––– 100E
––– 110E
––– 120E
––– 125E
900
910
1,000
1,100
––– 900E
––– 910E
––– 1K0E
––– 1K1E
7,500
8,000
8,200
8,500
––– 7K5E
––– 8K0E
––– 8K2E
––– 8K5E
= Standard values; check
availability using the world-
wide inventory search at
www.ohmite.com
B8: 12.5K-25K Ω
B20: 22.5K-100K Ω
8.2
9.1
10
11
12
13
15
16
18
––– 8R2E
––– 9R1E
––– 10RE
––– 11RE
––– 12RE
––– 13RE
––– 15RE
––– 16RE
––– 18RE
130
150
160
180
200
220
225
240
250
––– 130E
––– 150E
––– 160E
––– 180E
––– 200E
––– 220E
––– 225E
––– 240E
––– 250E
1,200
1,250
1,300
1,500
1,600
1,750
1,800
2,000
2,200
––– 1K2E
––– 1K25E
––– 1K3E
––– 1K5E
––– 1K6E
––– 1K75E
––– 1K8E
––– 2K0E
––– 2K2E
9,000
9,100
10,000
11,000
12,000
12,500
13,000
13,500
15,000
––– 9K0E
––– 9K1E
––– 10KE
––– 11KE
––– 12KE
––– 12K5E
––– 13KE
––– 13K5E
––– 15KE
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-20K Ω
B12: 30K-51K Ω
Ohmite Mfg. Co.
1-866-9-OHMITE ? INT’L 1-847-258-0300 ? FAX 1-847-574-7522 ? WWW.OHMITE.COM ? INFO@OHMITE.COM
31
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