Choose Ohmite’s highest quality conformal axial lead silicone-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
conditions.
They feature all-welded
construction and have the
ability to maintain accurate
resistance values due to their
being stabilized. High quality
80 Series resistors meet or
exceed rigid MIL-R-26 specifications.
FEATURES
• High Stability: ±0.5% for 1%.
• Designed for precision power
applications.
• Mil values resistors marked with
“Mil” and Ohmite stock part no.
• In accordance with MIL-R-26
specifications.
• All-welded construction.
• RoHS compliant product available Jan. 2006 Add “E” suffix to
part number to specify.
80 Series
SPECIFICATIONS
Material
Coating: Silicone-ceramic.
Core: Ceramic.
Terminals: Solder-coated copper
clad axial lead.
Derating: Linearly from
100% @ +25°C to
0% @ +275°C.
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.
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
Acrasil®‚ Silicone-Ceramic Conformal
Axial Lead Wirewound Resistors
MIL-R-26 Specifications
1% Tolerance (5% available)
1.5 / 38.1
L
Series
Wattage Ohms
81F (RW70U) 1
0.1-6K
82
2
0.1-8K
83F (RW79U) 3
0.1-20K
83J (RW69V)
85F (RW74U) 5
0.1-75K
85J (RW67V)
80F (RW78U) 10 0.1-150K
80J (RW68V)
D
Dimensions (in. / mm)
Lead
Length
Diam.
Voltage ga.
0.437 / 11.1 0.125 / 3.2 150
24
0.406 / 10.3 0.219 / 5.6 100
20
0.593 / 15.1 0.218 / 5.5 200
20
0.937 / 23.8
0.343 / 8.7
460
18
1.842 / 46.8
0.406 /10.3
/10.3
1000
18
Non-Inductive versions available. Insert “N” before tolerance code. Example: 83NF2K21
2.74
3.01
3.32
3.74
4.02
4.53
4.99
5.11
5.62
6.19
6.81
7.5
8.25
9.09
10
11
12.1
13.3
15
16.2
18.2
20
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
2,210
2,490
2,740
3,010
3,320
3,740
4,020
4,530
4,990
5,110
5,620
6,190
6,810
7,500
8,250
9,090
10,000
10,500
11,000
12,100
13,300
15,000
16,200
18,200
20,000
22,100
24,900
27,400
30,100
33,200
37,400
38,300
40,200
45,300
49,900
51,100
56,200
61,900
68,100
75,000
82,500
90,900
100,000
150,000
200,000
Part No.
Prefix
Suffix
–––51K1
–––56K2
–––61K9
–––68K1
–––75K
–––82K5
–––90K9
–––100K
–––150K
–––200K
85F––– 5
80F––– 10
Ohmic value
1
3
5
10
81F–––
83F–––
85F–––
80F–––
Ohmic value
1
3
5
10
81F–––
83F–––
85F–––
80F–––
Ohmic value
1
3
5
10
81F–––
83F–––
85F–––
80F–––
Ohmic value
1
3
5
10
81F–––
83F–––
85F–––
80F–––
Part No.
Prefix
Suffix
–––2K21
–––2K49
–––2K74
–––3K01
–––3K32
–––3K74
–––4K02
–––4K53
–––4K99
–––5K11
–––5K62
–––6K19
–––6K81
–––7K5
–––8K25
–––9K09
–––10K
–––10K5
–––11K
–––12K1
–––13K3
–––15K
–––16K2
–––18K2
–––20K
–––22K1
–––24K9
–––27K4
–––30K1
–––33K2
–––37K4
–––38K3
–––40K2
–––45K3
–––49K9
Wattage
Part No.
Prefix
Suffix
75 –––75R
82.5 –––82R5
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
1,210 –––1K21
1,330 –––1K33
1,500 –––1K5
1,620 –––1K62
1,820 –––1K82
2,000 –––2K0
Wattage
Part No.
Prefix
Suffix
–––2R74
–––3R01
–––3R32
–––3R74
–––4R02
–––4R53
–––4R99
–––5R11
–––5R62
–––6R19
–––6R81
–––7R5
–––8R25
–––9R09
–––10R
–––11R
–––12R1
–––13R3
–––15R
–––16R2
–––18R2
–––20R
–––22R1
–––24R9
–––27R4
–––30R1
–––33R2
–––37R4
–––40R2
–––45R3
–––49R9
–––51R1
–––56R2
–––61R9
–––68R1
Wattage
Part No.
Prefix
Suffix
–––R10
–––R11
–––R121
–––R133
–––R15
–––R162
–––R182
–––R20
–––R221
–––R249
–––R274
–––R301
–––R332
–––R374
–––R392
–––R402
–––R453
–––R499
–––R511
–––R562
–––R619
–––R681
–––R75
–––R825
–––R909
–––1R0
–––1R1
–––1R21
–––1R33
–––1R5
–––1R62
–––1R82
–––2R0
–––2R21
–––2R49
Wattage
0.1
0.11
0.121
0.133
0.15
0.162
0.182
0.2
0.221
0.249
0.274
0.301
0.332
0.374
0.392
0.402
0.453
0.499
0.511
0.562
0.619
0.681
0.75
0.825
0.909
1
1.1
1.21
1.330
1.5
1.62
1.82
2
2.21
2.49
Wattage
Ohmic value
S T O C K PA RT N U M B E R S F O R S TA N D A R D R E S I S TA N C E VA L U E S
= Most popular stock
values
= Stock values
= Non-stock values
subject to minimum
handling charge per
item
Shaded values involve
very fine resistance wire
and should not be used
in critical applications
without burn-in and/or
thermal cycling.
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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