SPECIFICATIONS
Mate rial
Coating: Silicone-ceramic.
Core: Ceramic.
Terminals: Solder-coated copper
clad axial lead.
Derating: Linearly from
100% @ +25°C to
0% @ +275°C.
Ele ctrical
Tolerance: ±5% (J type), ±1% (F
type)
(other tolerances available).
Power rating: Based on 25°C free
air rating.
Choose Ohmite’s highest qual-
ity conformal axial lead sili-
cone-ceramic coated resistors
for applications requiring high
precision and stability.
The wirewound 80 Series
1% tolerance resistors have a
low temperature coefficient
and maintain a high degree of
stability under demanding con-
ditions.
They feature all-welded con-
struction and have the ability to
maintain accurate resistance
values due to their being stabi-
lized. High quality 80 Series
resistors meet or exceed rigid
MIL-R-26 specifications.
80 Series
Acras il®‚ Silicone -Ce ramic Conformal
Axial Le ad Wire wound Re s is tors
MIL-R-26 Spe cifications
1% Tole rance (5% available )
1.5 / 38.1
L
D
Maximum ohmic values:
See chart.
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
Dimensions (in. / mm)
Length Diam.
Lead
Voltage ga.
FEATURES
Series
Wattage Ohms
• High Stability: ±0.5% for 1%.
• Designed for precision power
applications.
• Mil values resistors marked with
“Mil” and Ohmite stock part
number.
• In accordance with MIL-R-26
specifications.
• All-welded construction.
81F (RW70U)
82
83F (RW79U)
83J (RW69V)
1
2
3
0.1-6K 0.437 / 11.1 0.125 / 3.2
0.1-8K 0.406 / 10.3 0.219 / 5.6
0.1-20K 0.593 / 15.1 0.218 / 5.5
150
100
200
24
20
20
85F (RW74U)
85J (RW67V)
5
0.1-75K 0.937 / 23.8 0.343 / 8.7
460
18
18
80F (RW78U) 10 0.1-150K 1.842 / 46.8 0.406 /10.3 1000
80J (RW68V)
Non-Inductive versions available. Insert “N” before tolerance code. Example - 83NF2K21
STOCK PART NUMBERS FOR STANDARD RESISTANCE VALUES
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
✔ ✔ ✔ ✔
✔ ✔ ✔
2.74 –––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 ✔ ✔ ✔ ✔
✔ ✔ ✔
75 –––75R
82.5 –––82R5 ✔ ✔ ✔ ✔
✔ ✔ ✔
2,210 –––2K21
✔ ✔ ✔
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 ✔ ✔ ✔ ✔
2,490 –––2K49 ✔ ✔ ✔ ✔
2,740 –––2K74 ✔ ✔ ✔
3,010 –––3K01 ✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
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
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
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
27,400 –––27K4
30,100 –––30K1
33,200 –––33K2
37,400 –––37K4
38,300 –––38K3
40,200 –––40K2
45,300 –––45K3
49,900 –––49K9
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ ✔
75,000 –––75K
82,500 –––82K5
90,900 –––90K9
100,000 –––100K
150,000 –––150K
200,000 –––200K
✔ ✔
✔
✔
✔
✔
✔
–––R20
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ = Most popular stock
values
✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔
✔ = Stock values
9.09 –––9R09
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
✔ = Non-stock values
subject to minimum
handling charge per
item
10
11
–––10R
–––11R
12.1
13.3
15
16.2
18.2
20
–––12R1 ✔ ✔ ✔ ✔
–––13R3
–––15R
–––16R2
–––18R2 ✔ ✔ ✔ ✔
–––20R
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
Shaded values involve
very fine resistance wire
and should not be used
in critical applications
without burn-in and/or
thermal cycling.
✔ ✔ ✔ ✔
✔ ✔ ✔
22.1
24.9
27.4
30.1
33.2
37.4
40.2
45.3
49.9
51.1
56.2
61.9
68.1
–––22R1
–––24R9 ✔ ✔ ✔ ✔
–––27R4 ✔ ✔ ✔
–––30R1 ✔ ✔ ✔ ✔
–––33R2
–––37R4
–––40R2 ✔ ✔ ✔ ✔
–––45R3 ✔ ✔ ✔
–––49R9 ✔ ✔ ✔ ✔
–––51R1 ✔ ✔ ✔
–––56R2 ✔ ✔ ✔ ✔
–––61R9 ✔ ✔ ✔
–––68R1 ✔ ✔ ✔ ✔
0.909 –––R909
1
1.1
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
–––1R0
–––1R1
✔ ✔ ✔
✔ ✔ ✔
✔ ✔
✔ ✔
✔ ✔
✔ ✔
✔ ✔
✔ ✔
✔ ✔
✔ ✔
1.21 –––1R21 ✔ ✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
1.330 –––1R33
1.5 –––1R5
1.62 –––1R62
1.82 –––1R82 ✔ ✔ ✔ ✔
2
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
1,210 –––1K21 ✔ ✔ ✔ ✔
1,330 –––1K33
1,500 –––1K5
1,620 –––1K62
1,820 –––1K82 ✔ ✔ ✔ ✔
2,000 –––2K0 ✔ ✔ ✔ ✔
✔ ✔ ✔
✔ ✔ ✔ ✔
✔ ✔ ✔
–––2R0
✔ ✔ ✔ ✔
✔ ✔ ✔
2.21 –––2R21
2.49 –––2R49 ✔ ✔ ✔ ✔
✔ ✔
16
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
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