RK203

Metal Shaft Potentiometer 20mm Size Metal Shaft Type RK203/EC20A Series Heavy rotation torque and good operational feel, available in potentiometer and encoder type. Rotary Potentiometers Slide Potentiometers Typical Specifications Specifications Items Potentiometer Rating Operating life 0.05W Encoder 1mA 5V DC 30,000cycles Products Line Potentiometer Metal Shaft Insulated Shaft Knob Operating Flat Operating section Length of operating section （mm） 30 Detent torque （mN m） ・ Number of detent Rotational Operating angle direction 240$max Vertical Minimum order unit （pcs.） 400 Products No. Drawing No. 1 Depending on individual specification RK2031110 Encoder Operating section Detent Length of torque operating section （mN m） ・ （mm） Number of detent Number Travel of push- Operating of pulse on switch mm） direction （ Minimum order unit （pcs.） Products No. Drawing No. EC20A1820401 Flat 30 40±20 18 18 1.5 Vertical 400 EC20A1824401 3 2 Notes 1. All the potentiometer types can be customized. Contact us with the detailed specifications if you have such requirements. 2. The same size of the non-switch type can be used as an encoder type. The switch type is an incremental encoder type only. 352 Metal Shaft Potentiometer 20mm Size Metal Shaft Type RK203/EC20A Series Dimensions Photo RK203 Without switch type, Potentiometer type Style Unit:mm PC board mounting hole dimensions （Viewed from mounting side） ø20.2 12 2.6 18.4 19.2 3.5 Mounting surface 2.5 8 10 30 Rotary Potentiometers Slide Potentiometers 4.5 ø6 1.5 3.5 1.5 NC NC NC 3 21 2 NC 1 3 ø3 15.5 1.5 3-ø1.2holes 1.25 6.25 3-1 (17.8) 3.75 EC20A Without switch type, Incremental type 8.3 19.2 2.5 4.5 ¿6 2.6 3.5 Mounting surface 8 10 30 ¿20.2 12 18.4 10 9 M9×0.75 C1 8.3 9 Metal Shaft A 3.5 1.5 1.5 A C B NCNC NC ¿3 15.5 B C 10 9 M9G0.75 C1 Insulated Shaft Knob Operating 9 1.5 3-ø1.2 holes 1.25 3.75 3-1 (17.8) 6.25 2.6 EC20A With push-on switch (travel 1.5mm), Incremental type 3.5 Mounting surface 2.5 10 10 30 12 Switch travel 1.5 4.5 ¿6 ¿20.2 5 18.4 8.3 19.2 9 3.5 1.5 M9G0.75 1.5 7 C1 A C B NC NC NC ¿3 15.5 D 1.5 1.25 3.75 ACB E 5–ø1.2 holes 3Ð1 (17.8) 6.25 D E 10 9 353 Metal Shaft Potentiometers List of Varieties Type Number of drive shafts Model RK203 / EC20A RK2711 20mm size metal shaft 27mm size metal shaft 50mm size metal shaft highquality-audio Single-shaft RK5011□A Rotary motor-driven Rotary Potentiometers Slide Potentiometers RK1681□ / MG0 RK2711□MC0 Photo The bushing Fixing method of bushing fastened by use can be of screws Bushing screw clamp The bushing can be fastened by use of screws Horizontal type Without Terminal mounting Attached switch Gang error applicable to Dual-unit parts for audio volume control purposes Metal Shaft Insulated Shaft Knob Operating Solder heat resistance Electrical performance Mechanical performance Environmental performance Manual soldering Dip soldering Reflow soldering Vertical type −60dB to 0dB 3dB max. 300℃ max. 3s max. 260±5℃, 5±1s 350℃ max. 5s max. −100dB to 0dB 2dB max. 350±10℃, 5 ＋1 0 −40dB to 0dB 3dB max. −60dB to 0dB 3dB max. s 350℃ max. 3s max. 350℃ max. 5s max. Motor terminal : 350$max 2s max. Motor terminal:350℃ max. 2s max. 260±5℃, 5±1s Operating temperature range Rated power Residual resistance Maximum attenuation （Volume control） Insulation resistance Voltage proof Stopper strength N m） （・ −30℃ to ＋80℃ 0.05W R≦10kΩ 20Ωmax. 10kΩ＜R≦50kΩ 30Ωmax. 50kΩ＜R Nominal total resistance of 0.1% or less 5kΩ≦R＜ 10kΩ 70dB min. 10kΩ≦R＜ 50kΩ 80dB min. 50kΩ≦R＜100kΩ 90dB min. 100kΩ≦R 100dB min. 100MΩ min. 250V DC 300V AC for 1minute 0.5 100N max. −10℃ to ＋70℃ 0.1W 0.05W R≦10kΩ 20Ωmax. 10kΩ＜R≦50kΩ 30Ωmax. 50kΩ＜R Nominal total resistance of 0.1% or less 5kΩ ≦R＜ 10kΩ ≦R＜ 50kΩ ≦R＜ 100kΩ ≦R 10kΩ 50kΩ 100kΩ 70dB min. 80dB min. 90dB min. 100dB min. 120dB min. 100MΩ min. 500V DC 500V AC for 1minute 0.9 1.5 150N max. 100MΩ min. 250V DC 100MΩ min. 500V DC 300V AC for 1minute 0.9 100N max. 500V AC for 1minute Push-pull strength Vibration Cold Dry heat Damp heat Page 10 to 55 to 10Hz/min., the amplitude is 1.5mm for all the frequencies, in the 3 direction of X, Y and Z and for 2 hours respectively −40±2℃ for 192h −30±3℃ for 96h −20±3℃ for 240h 85±2℃ for 192h 70±2℃ for 96h 70±2℃ for 240h −20±2 for 96h −30±3℃ for 96h 70±2℃ for 96h 40±2℃, 90 to 95％RH for 96h 360 60±3℃, 40±2℃, 60±2℃, 90 to 95％RH for 240h 90 to 95％RH for 96h 90 to 95％RH for 240h 352 354 358 ● Metal Shaft Potentiometers Attached Parts ………………………………………………………………………………363 ● Metal Shaft Potentiometers Cautions …………………………………………………………………………………364, 365 322