Copyright©RARA Electronics Corp.

Resistance Laws:

Fig. 1. Resistance laws: A - linear; B-logarithmic, C-reverse logarithmic.

Fig. 2. Derating curve versus ambient temperature.

Fig. 2. Power dissipation curve of potentiometers versus ambient temperature.

Derating curve: Potentiometers could be dissipated of power from 100% nominal power

at ambient temperature

≤ +40oC up to 25% nominal power at ambient temperature +70oC.

Summary

Type of

potentiometer

Switch

Spindle

material

Diameter of

Spindle

(mm)

Standard spindle long

(mm)

Type of spindle

end

PR 246

No

Metal

6

16; 20; 25; 32; (40)

P-1; P-5; P-6

PR 2461 s55

Yes

Metal

6

16; 20; 25; 32; (40)

P-1; P-5; P-6

PR 2462

No

Plastic

6

(20); 25; (32)

(P-1); P-5

PR 2462 s55

Yes

Plastic

6

(20); 25; (32)

(P-1); P-5