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