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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. PR18 SINGLE-TURN ROTARY POTENTIOMETERS
Description
The PR 18... single- turn, housed in a metal case, rotary carbon control potentiometers. It comprises a carbon resistive track fitted on a resin modified paper base. Base diameter of potentiometers is 18 mm. Resis tance 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 the PCB or soldering pins.
Applications
Potentiometers are widely used in electronic audio -video equipment, electric domestic equipment and outer control elements. Quick Reference Data Parameter Value Rated resistance RN According E3- series (1 - 2,2 - 4,7 - 10 etc.) Resistance range:A low (linear) (ohms) B low (logarithmic) (ohms) C low (inverse logarithmic) (ohms) 120 ÷ 2,2M 1k ÷ 1M 1k ÷ 1M Tolerance of resistance (%) ±5% on RN less or = 470kohms on request ±10% on RN less or = 470kohms on request ±20% on RN less or = 220kohms on request ±30% on RN more than 220kohms on request Maximum dissipation PN at Tamb= 40oC: A low (W) B low (W) C low (W) 0.2 0.1 0.1 Maximum limit voltage : A low (V) B low (V) C low (V) 200 200 200 Total mechanical angle of rotation (o) 300 ± 5 Synchronous characteristic: (dB) (only for tandem potencjometers G) - for linear A at values between 10 and 90 % of RTotal - for logarithmic B at attenuation range 0 ÷ 40dB Maximum dissipation at category temperature 25% PN Switch data: voltage/current 120 V / 1 AAC or 16 V / 2 ADC Climatic category 25/070/10 Marking Marking on metal case: producer "TELPOD"; rated resistance; month and year of production. Ordering example: Please order by an example: We need potentiometer 18 mm; with switch; single; 47kW; linear A low; diameter of spindle 6 mm, long 25 mm; end type of spindle P-6; for mounting on printed circuit board: Potentiometer PRP 185 s56 47kohm A 25 P6 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. 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 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 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; P5; P6 M7x0.75/6; 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.
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/a/h for L 8, 10, 12, 12.5 For L For L for L 25, 32, 40 P1 4, 6 P3 4 P6 6 8/7/6 12/11/10 14/13/12 Outline view of potentiometers
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. Outline view of potentiometers (cont.)