1177 East Tower Road, Schaumburg, IL 60173

Tel: 847-884-6664

Fax: 847-884-6665

E-mail: sales@tocos.com

www.tocos.com

53

Specifications

Electrical

Standard Resistance Range . . . . . . . . . . . B = 10

Ω to 20kΩ

A,C = 100

Ω to 3kΩ

Resistance Tolerance . . . . . . . . . . . . . . . . .

10% standard

(

5%,

2% or

1% special order )

End Resistance . . . . . . . . . . . . . . . . . . R ! 500

Ω =1Ω max.

R 0 500

Ω = 0.2% max.

Resistance Taper . . . . B = linear; A = CW audio (logarithm);

C = CCW audio (logarithm)

Power Rating . . . . . . . . B = 1 watt; A,C = 0.5 watt, at

40 C

Insulation Resistance . . . . . . . 100M

Ω minimum at 500VDC

Dielectric Strength . . . . . . . . . . . . . . . . . . 500VAC, 1 minute

Theoretical Resolution

Mechanical

Mechanical Travel . . . . . . . . . . . . . . . . . . . . . . . . . . 290

5

Shaft Torque

Solderability . . . . . . . . . . . . . . . . . . . . . . . 235 C, 3 seconds

Marking . . . . . . . . . . . . . Model type, taper, resistance code,

shaft type, terminal identification, date code

Environmental

Temperature Range . . . . . . . . . . . . . . Y =

10 Cto

100 C

or X =

30 Cto

100 C

Temperature Characteristics . . . . . . . . . . .

85 C, 5 hours

without load

∆T/R ) 5%

Low Temperature Exposure . . . . . . .

10 C ( Y ),

30 C ( X )

1 hour without load

∆T/R ) 3%

Load Life . . . . . . . . . . . .

40 C, 1,000 hours with rated load

∆T/R ) 3%

Moisture and Load Life . . . . . . . . . . . .

40 C, 90-95%RH,

500 hours with 1/10 rated load

∆T/R ) 5%

Vibration . . . . . . . . . . . . . . . . . . .10-55Hz, 1.5mm amplitude,

2 directions, 2 hours each

∆T/R ) 1%

Soldering Heat Resistance . . . . . . . . . 350 C, 3.5 seconds;

260 C, 5 seconds (PCB units)

∆T/R ) 2%

Rotational Life . . . . 15,000 cycles (500 cycles for shaft lock

models only) with 1/2 rated load

∆T/R ) 3%

R = Total Resistance Value;

∆T/R = Total Resistance Change

20mm Diameter, Single-Turn, Wirewound Industrial Panel Controls

P ANEL CONTROLS

Features

20mm diameter, single-turn industrial panel controls

Wirewound element

Linear or audio tapers

Single or tandem units, single shaft

Metal shaft and bushing

Panel and PCB mounting styles

Shaft lock available

6mm diameter shafts in slot, flat or round end styles

Standard 10mm or 15mm shaft length

Lug or right angle mount pin terminals

Low operating temperature option of

10 C or

30 C, up to

100 C

Resistance (

Ω)

10

20

50

100

200

500

Resistance (

Ω)

1,000

2,000

5,000

10,000

20,000

–

Resolution ( % )

0.62

1.12

0.78

0.62

0.46

0.38

Resolution ( % )

0.44

0.35

0.25

0.18

0.14

–

RA20Y

RA20YP2