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Tel: 82-32-817-4325 Resistors And Fax: 82-32-817-4329 Resistive Applications Web: http://www.raraohm.com Email: sg@raraohm.com Date: 2012-12-12 Copyright©RARA Electronics Corp. PR24 SINGLE-TURN ROTARY POTENTIOMETERS

Description

The PR 24 series are single- turn, housed in a metal case, rotary car bon control potentiometers. They comprise a carbon resistive track fitted on a resin modified paper base. Base diameter of potentiometers is 24 mm. R esistance track can be linear -A, logarithmic-B, inverse logarithmic-C. Potentiometers are made single or tandem, with plastic or metallic spindle. Terminals are designed for PCB or soldering pins.

Applications

Potentiometers are widely used in electr onic audio video equipment, electric domestic equipment and outer control elements in professional use too. Quick Reference Data Parameter Value Nominal resistance RN According series E3 (1 - 2, 2 - 4, 7 - 10 etc.) Resistance range: A low (linear) (ohms) B low (logarithmic) (ohms) C low (reverse logarithmic) (ohms) 100 ÷ 2,2M 1k ÷ 1M 1k ÷ 1M Tolerance of resistance (%) ±5% on RN less or = 470kohms on request ±10% on RN more than = 470kohms on request ±20% on RN less or = 470kohms on request ±30% on RN more than 470kohms on request Max. dissipation PN at Tamb= 40oC: A low (W) B low (W) C low (W) 0.5 0.25 0.25 Maximum working voltage: A law (V) B law (V) C law (V) 250 250 250 Insulating voltage (VDC) 350 /2100 (pulse value) Total mechanical angle of rotation (o) 300±10 Maximum dissipation at category temperature 25% PN Climatic category 25/070/10 Switch data: voltage/current 250V/3A AC Marking Marking on metal case: producer "TELPOD"; rated resistance; month and year of production. Ordering example: Please order according example: 1. We need potentiometers 24 mm diameter; without switch; resistance 47kohms; linear A law; diameter of spindle 6 mm, long of spindle 40 mm; type of spindle end P-6. Potentiometer PR 246 47kohms A 40 P6 2. We need potentiometers 24 mm diameter; with switch; resistance 22kohms; logarithmic C; plastic spindle, diameter of spindle 6 mm, long of spindle 25 mm; type of spindle end P-5 Potentiometer PR 2462 s55 22kohms C 25 P5 Packing The potentiometers can be supplied in bulk packing in a plastic bags and in a carton box.

Tel: 82-32-817-4325 Resistors And Fax: 82-32-817-4329 Resistive Applications Web: http://www.raraohm.com Email: sg@raraohm.com Date: 2012-12-12 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

Tel: 82-32-817-4325 Resistors And Fax: 82-32-817-4329 Resistive Applications Web: http://www.raraohm.com Email: sg@raraohm.com Date: 2012-12-12 Copyright©RARA Electronics Corp. Spindles Indicating of spindle ends Dimensions (mm) Diameter D L/l/a/h Outline View of Potentiometers