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87

Commercial Grade

Military Grade

Watts

Ohms

Voltage

81F

RW70U

1

0.1-6K

150

82

2

0.1-8K

100

83F

RW79U

3

0.1-20K

200

83J

RW69V

85F

RW74U

5

0.1-75K

460

85J

RW67V

80F

RW78U

10

0.1-150K

1000

80J

RW68V

Non-Inductive versions available. Insert “N” before tolerance code. Example: 83NF2K21

LD

1.5 in. / 38.1mm

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.

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

Fea tures

•Designedforprecisionpowerapplications

•All-weldedconstruction

•RWSeries“Mil”valueresistorsmarkedwith

“Mil”inaccordancewithMIL-R-26specifica-

tions

Chara C teristi C s

s eries spe C i F i C ations

Dimensions

(in./mm max.)

Watts

Length

Diam.

Lead gauge

81F

RW70U

1

0.437 / 11.1

0.125 / 3.2

24

82

2

0.406 / 10.3

0.219 / 5.6

20

83F

RW79U

3

0.593 / 15.1

0.218 / 5.5

20

83J

RW69V

85F

RW74U

5

0.937 / 23.8

0.343 / 8.7

18

85J

RW67V

80F

RW78U

10

1.842 / 46.8

0.406 /10.3

18

80J

RW68V

80 series

Conformal Axial Terminal Wirewound

1% Tolerance (5% available)

rW series

Military Grade 80 Series MIL-R-26 Qualified

(continued)