Copyright©RARA Electronics Corp.

Mechanical Data

Table 2

Type of

potentiomete

r

Single

Tandem

Switch Tap

Material of

spindle

Spindle

Diameter

(mm)

Typical

Length of

spindle

End of

spindle

Bush

M...x../

length (mm)

Pins/

assembly

PR 185

Single

No

No

Metal

6

16; 20; 25; 40

P1; P3;

P5; P6

M7x0.75/6

Dir. assemb.

PRP 185

No

PCB

PRT 185

Yes

Dir. assemb.

PRPT 185

Yes

PCB

PR 185 s56

Yes

No

Dir. assemb.

PRT 185 s56

Yes

Dir. assemb.

PR 186

No

No

4

8; 10; 12.5; 16;

20; 25; 32; 40;

P1; P3;

P5.1;

P5.2

M7x0.75/6.5

Dir. assemb.

PRP 186

No

PCB

PRT 186

Yes

Dir. assemb.

PRPT 186

Yes

PCB

PR 1862

No

Plastic

12; 20; 25

P5

Dir. assemb

PRT 1862

Yes

Dir. assemb

PR 186 S56

Yes

No

Metal

8; 10; 2.5;16;

20; 25; 32;

P1; P3;

Dir. assemb

PRT 186 S56

Yes

Dir. assemb

PR 18 G

Tandem

No

No

6

16; 20; 25; 32;

40

P5; P6

M7x0.75/6;

16

PCB

PRP 18 G

No

Dir. assemb

PRT 183 G

Yes

PCB

PRPT 183 G

Yes

Dir. assemb

Resistance Laws:

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

Fig. 2. Derating curve versus ambient temperature.

Derating curve: Potentiometers are derated from 100% rated dissipation at 40oC to 25%

rated dissipation at 70oC.