Electrical
Tolerance: ±5% (J type),
±1% (F type)
(other tolerances available).
Power rating: Based on 25°C free
air rating.
Maximum ohmic values:
See chart.
F E A T U R E S
• Designed for precision power
applications
• All-welded construction
• RW Series “Mil” value resistors
marked with “Mil” in accordance
with MIL-R-26 specifications
80 Series
®
Commercial Grade Acrasil ‚ Silicone-Ceramic
Conformal Axial Terminal Wirewound
1% Tol. (5% avail.)
Overload: Under 5 watts: 5 times
rated wattage for 5 seconds. 5
watts and over: 10 times rated
wattage for 5 seconds.
Temperature coefficient:
Under 1Ω: ±90 ppm/°C
1 to 9.99Ω: ±50 ppm/°C
10Ω and over: ±20 ppm/°C
Dielectric withstanding voltage:
500 VAC: 1 watt rating
1000 VAC: 2, 3, 5, 7 and
10 watt rating
S P E C I F I C A T I O N S
Material
Coating: Silicone-ceramic.
Core: Ceramic.
Terminals: Solder-coated copper
clad axial.
Derating: Linearly from
100% @ +25°C to
0% @ +275°C.
RW Series
Military Grade 80 Series MIL-R-26 Qualified
1.5 / 38.1
L
D
Dimensions (in. / mm)
Length Diam.
O R D E R I N G I N F O R M AT I O N
Comm. Military
Grade Grade Watts Ohms
Lead
Voltage ga.
Non-Inductive Winding
Commercial Grade
This product will
not be made avail-
able as RoHS
Optional (blank = std. winding)
81F
82
83F
83J
RW70U
1
2
3
0.1-6K 0.437 / 11.1 0.125 / 3.2 150
0.1-8K 0.406 / 10.3 0.219 / 5.6 100
0.1-20K 0.593 / 15.1 0.218 / 5.5 200
24
20
20
8 1 N J R 1 0
RW79U
RW69V
Compliant.
80 Series
Wattage Tolerance Resistance Value
Acrasil®
1 = 1W F= 1%
R10 = 0.10Ω
1R0 = 1.0Ω
10R =10.0Ω
Silicone Ceramic
Conformal Axial
Term. Wirewound
2
J = 5%
85F
85J
RW74U
RW67V
5
0.1-75K 0.937 / 23.8 0.343 / 8.7 460
18
3
For RoHS
Compliant equiva-
lent, see 40 Series.
5
250 =
250Ω
0 = 10W
1K0 = 1,000Ω
4K5 = 4,500Ω
50K = 50,000Ω
80F
80J
RW78U
RW68V
10 0.1-150K 1.842 / 46.8 0.406 /10.3 1000 18
Military Grade
Non-Inductive versions available. Insert “N” before tolerance code. Example: 83NF2K21
� ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢅ ꢄ ꢆ
Tolerance
F = 1%
Resistance Value
R100 = 0.1�
RW Series
Ohmite’s highest quality conformal axial terminal silicone-ceram-
ic coated resistors for applications requiring high precision and
stability. These resistors have a low temperature coefficient and
maintain a high degree of stability under demanding conditions.
Military grade
J = 5%
1R00 = 1.0�
10R0 = 10.0�
1000 = 100� 1002 = 10K�
1001 = 1000� 1503 = 150K�
C O M M E R C I A L G R A D E P A R T N U M B E R S
Wattage
Wattage
Wattage
Wattage
Wattage
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
0.1
–––R10
2.21 –––2R21
51.1 –––51R1
1,210 –––1K21
27,400 –––27K4
30,100 –––30K1
33,200 –––33K2
37,400 –––37K4
38,300 –––38K3
40,200 –––40K2
45,300 –––45K3
49,900 –––49K9
51,100 –––51K1
56,200 –––56K2
61,900 –––61K9
68,100 –––68K1
0.11 –––R11
0.121 –––R121
0.133 –––R133
0.15 –––R15
0.162 –––R162
0.182 –––R182
0.2
0.221 –––R221
0.249 –––R249
0.274 –––R274
0.301 –––R301
0.332 –––R332
0.374 –––R374
0.392 –––R392
0.402 –––R402
0.453 –––R453
0.499 –––R499
0.511 –––R511
0.562 –––R562
0.619 –––R619
0.681 –––R681
0.75 –––R75
0.825 –––R825
2.49 –––2R49
2.74 –––2R74
3.01 –––3R01
3.32 –––3R32
3.74 –––3R74
4.02 –––4R02
4.53 –––4R53
4.99 –––4R99
5.11 –––5R11
5.62 –––5R62
6.19 –––6R19
6.81 –––6R81
7.5 –––7R5
8.25 –––8R25
56.2 –––56R2
61.9 –––61R9
68.1 –––68R1
75 –––75R
82.5 –––82R5
1,330 –––1K33
1,500 –––1K5
1,620 –––1K62
1,820 –––1K82
2,000 –––2K0
2,210 –––2K21
90.9 –––90R9
100 –––100
110 –––110
121 –––121
133 –––133
150 –––150
162 –––162
182 –––182
200 –––200
221 –––221
249 –––249
274 –––274
301 –––301
332 –––332
374 –––374
402 –––402
453 –––453
499 –––499
511 –––511
562 –––562
619 –––619
681 –––681
750 –––750
825 –––825
909 –––909
1,000 –––1K0
1,100 –––1K1
–––R20
2,490 –––2K49
2,740 –––2K74
3,010 –––3K01
3,320 –––3K32
3,740 –––3K74
4,020 –––4K02
4,530 –––4K53
4,990 –––4K99
5,110 –––5K11
5,620 –––5K62
6,190 –––6K19
6,810 –––6K81
7,500 –––7K5
8,250 –––8K25
9,090 –––9K09
10,000 –––10K
10,500 –––10K5
11,000 –––11K
12,100 –––12K1
13,300 –––13K3
15,000 –––15K
16,200 –––16K2
18,200 –––18K2
20,000 –––20K
22,100 –––22K1
24,900 –––24K9
75,000 –––75K
82,500 –––82K5
90,900 –––90K9
100,000 –––100K
150,000 –––150K
200,000 –––200K
9.09 –––9R09
10
11
–––10R
–––11R
12.1
13.3
15
–––12R1
–––13R3
–––15R
= Standard values
= Non-standard values
subject to minimum
handling charge per
item
16.2
18.2
20
–––16R2
–––18R2
–––20R
0.909 –––R909
1
1.1
22.1
24.9
27.4
30.1
33.2
37.4
40.2
45.3
49.9
–––22R1
Shaded values involve
very fine resistance wire
and should not be used
in critical applications
without burn-in and/or
thermal cycling.
–––1R0
–––1R1
–––24R9
–––27R4
–––30R1
–––33R2
–––37R4
–––40R2
–––45R3
–––49R9
1.21 –––1R21
1.330 –––1R33
1.5 –––1R5
1.62 –––1R62
1.82 –––1R82
2
Check product availability at
www.ohmite.com
–––2R0
22
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
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