Commercial Grade Acrasil
®
‚ Silicone-Ceramic
Conformal Axial Terminal Wirewound
1% Tolerance (5% available)
80 series
rW series
F e at u r e s
Military Grade 80 Series MIL-R-26 Qualified
Ohmite’s highest quality conformal axial terminal
silicone-ceramic 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.
• Designed for precision power applications
• All-welded construction
• RW Series “Mil” value resistors marked with
“Mil” in accordance with MIL-R-26 specifica-
tions
s e r i e s s p e C i F i C at i o n s
Commercial Grade
81F
82
83F
83J
85F
85J
80F
80J
Military Grade
RW70U
RW79U
RW69V
RW74U
RW67V
RW78U
RW68V
Watts
1
2
3
5
10
Ohms
0.1-6K
0.1-8K
0.1-20K
0.1-75K
0.1-150K
Voltage
150
100
200
460
1000
Non-Inductive versions available. Insert “N” before tolerance code. Example: 83NF2K21
CharaCteristiCs
Coating
Silicone-ceramic
Core
Ceramic
Terminals
Solder-coated copper clad axial
Derating
Linearly from 100% @ +25°C to 0% @ +275°C.
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
Dimensions
(in./mm max.)
Watts
Length
0.406 / 10.3
0.437 / 11.1
Diam.
0.219 / 5.6
0.125 / 3.2
Lead gauge
20
24
1.5 in. /
38.1mm
L
D
85F
85J
80F
80J
83F
83J
82
81F
RW70U
RW79U
RW69V
3
5
10
2
1
0.593 / 15.1
0.937 / 23.8
1.842 / 46.8
0.218 / 5.5
0.343 / 8.7
0.406 /10.3
20
18
18
RW74U
RW67V
RW78U
RW68V
(continued)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
87
Commercial Grade Acrasil
®
‚ Silicone-Ceramic
Conformal Axial Terminal Wirewound
1% Tolerance (5% available)
80 series
rW series
Wattage
1
3
5
10
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
81F–––
83F–––
85F–––
80F–––
Wattage
Military Grade 80 Series MIL-R-26 Qualified
o r D e r i n G i n F o r m at i o n
Commercial Grade (80 Series) Part Numbers
Ohmic value
Ohmic value
Ohmic value
Ohmic value
Ohmic value
Wattage
1
3
5
10
81F–––
83F–––
85F–––
80F–––
Wattage
1
3
5
10
Part No.
Prefix
Suffix
–––1K21
–––1K33
–––1K5
–––1K62
–––1K82
–––2K0
–––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
81F–––
83F–––
85F–––
80F–––
Wattage
Part No.
Prefix
Suffix
–––27K4
–––30K1
–––33K2
–––37K4
–––38K3
–––40K2
–––45K3
–––49K9
–––51K1
–––56K2
–––61K9
–––68K1
–––75K
–––82K5
–––90K9
–––100K
–––150K
–––200K
85F–––
5
80F–––
10
Part No.
Prefix
Suffix
–––2R21
–––2R49
–––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
1
3
5
10
81F–––
83F–––
85F–––
80F–––
Part No.
Prefix
Suffix
51.1
–––51R1
56.2
–––56R2
61.9
–––61R9
68.1
–––68R1
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
Military Grade
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
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
1,210
1,330
1,500
1,620
1,820
2,000
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
=
tandard values
S
= Non-standard 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.
Commercial Grade
81NJR10
80 Series
Acrasil
®
Silicone Ceramic
Conformal Axial
Term. Wirewound
Non-Inductive Winding
Optional (blank = std. winding)
½½½½½½½½½½
RW Series
Military grade
Tolerance
Resistance Value
F = 1%
R100 = 0.1½
J = 5%
1R00 = 1.0½
10R0 = 10.0½
1000 = 100½ 1002 = 10K½
1001 = 1000½ 1503 = 150K½
Wattage Tolerance Resistance Value
R10 = 0.10Ω
1 = 1W F= 1%
J = 5%
1R0 = 1.0Ω
2
10R = 10.0Ω
3
250 =
250Ω
5
1K0 = 1,000Ω
0 = 10W
4K5 = 4,500Ω
50K = 50,000Ω
This product will
not be made avail-
able as RoHS
Compliant.
For RoHS
Compliant equiva-
lent, see
40 Series.
88
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
