RA20 Datasheet, PDF (1/4 Pages) TOCOSAMERICA, INC. – 20mm Diameter, Single-Turn,Wirewound Industrial Panel Controls

RA20 Series
TOCOS®
PANEL CONTROLS
20mm Diameter, Single-Turn, Wirewound Industrial Panel Controls
RA20Y
RA20YP2
Features
Ⅲ 20mm diameter, single-turn industrial panel controls Ⅲ Wirewound element Ⅲ Linear or audio tapers
Ⅲ Single or tandem units, single shaft Ⅲ Metal shaft and bushing Ⅲ Panel and PCB mounting styles
Ⅲ Shaft lock available Ⅲ 6mm diameter shafts in slot, flat or round end styles Ⅲ Standard 10mm or 15mm shaft length
Ⅲ Lug or right angle mount pin terminals Ⅲ Low operating temperature option of ؁10؇C or ؁30؇C, up to ؀100؇C
Specifications
Electrical
Standard Resistance Range . . . . . . . . . . . B = 10Ω to 20kΩ
A,C= 100Ω to 3kΩ
Resistance Tolerance . . . . . . . . . . . . . . . . . ؓ10% standard
(ؓ5%,ؓ2% or ؓ1% special order )
End Resistance . . . . . . . . . . . . . . . . . . R ! 500Ω = 1Ω max.
R ⁰ 500Ω = 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 . . . . . . . 100MΩ minimum at 500VDC
Dielectric Strength . . . . . . . . . . . . . . . . . . 500VAC, 1 minute
Theoretical Resolution
Resistance ( Ω )
10
20
50
100
200
500
Resolution ( % )
0.62
1.12
0.78
0.62
0.46
0.38
Resistance ( Ω )
1,000
2,000
5,000
10,000
20,000
–
Resolution ( % )
0.44
0.35
0.25
0.18
0.14
–
Mechanical
Mechanical Travel . . . . . . . . . . . . . . . . . . . . . . . . . . 290؇ؓ5؇
Shaft Torque
Single Unit . . . . . 30.6 to 204 gf • cm (0.424 to 2.828 oz • in)
Tandem Unit . . . . . 71.2 to 510 gf • cm (0.987 to 7.07 oz • in)
Stop Strength . . . . . . . . . . . 6.12 kgf • cm (84.84 oz • in) max.
Mounting Nut Torque . . . . . . 15 kgf • cm (207.94 oz • in) max.
Solderability . . . . . . . . . . . . . . . . . . . . . . . 235؇C, 3 seconds
Marking . . . . . . . . . . . . . Model type, taper, resistance code,
shaft type, terminal identification, date code
Environmental
Temperature Range . . . . . . . . . . . . . . Y = ؁10؇C to ؀100؇C
or X = ؁30؇C to ؀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
TOCOS AMERICA, INC.
53
1177 East Tower Road, Schaumburg, IL 60173 Tel: [phone] Fax: [phone] E-mail: [e-mail] www.tocos.com