EC20A 20mm Size Metal Shaft Type RK203 Heavy torque and comfortable operation feel for encoder and potentiometer applications ■ Typical Specifications Specifications Items Encoders Rating Encoder Potentiometer 1mA 5V DC 0.05W Operating life 30,000 cycles Operating temperature range −30℃ to +80℃ −40℃ to ＋85℃ Metal Shaft Product Line Encoders Shaft Length of the Detent torque Number of Number Operating detent of pulse direction configuration shaft（mm） （mN・m） Push-on Travel of push-on Minimum order unit（pcs.） switch switch（mm） Japan Export Insulated Shaft With Flat 30 40±20 18 18 1.5 Vertical 400 Without 800 ー Hollow Shaft Product No. Drawing No. EC20A1824401 1 EC20A1820401 2 Product No. Drawing No. RK203111000V 3 Potentiometer Shaft Length of the Detent torque Number Rotational Mounting Number of Total resistance Resistance Minimum order unit（pcs.） configuration shaft（mm） （mN・m） of detent angle direction resistor elements （kΩ） taper Japan Export Flat 30 40±20 17 Singleunit 220° Vertical 10 1B 800 800 Ring Type Notes 1. Only the encoder type can be supplied with a push-on switch. 2. Shaft design and other features are customizable. Packing Specifications Tray Number of packages（pcs.） 1 case /Japan 1 case /export packing Export package measurements （mm） 400 800 374×508×272 Dimensions Unit:mm EC20A with push-on switch （travel 1.5mm） Encoder type PC board mounting hole dimensions （Viewed from mounting side） Style 3.5 10 Mounting surface Switch travel 30 10 1.5 9 8.3 2.5 12 ø20.2 M9G0.75 1.5 3.5 D 282 C1 1.5 1 E 3–1 (SW01) 19.2 Photo 4.5 ø6 No. A C B NCNC NC ø3 15.5 E D (17.8) 2-0.9 (SW02) Refer to P.284 for attached parts. Refer to P.284 for switches. Refer to P.307 for soldering conditions. EC20A / RK203／20mm Size Metal Shaft Type Dimensions No. Unit:mm Photo PC board mounting hole dimensions （Viewd from mounting side） Style 8 ø20.2 30 8.3 C1 M9G0.75 1.5 3.5 1.5 9 4.5 2 19.2 12 ø6 10 2.5 3.5 Mounting surface Encoders EC20A without switch type Encoder type A C B NCNC NC ø3 Metal Shaft 15.5 Insulated Shaft 3-1 (17.8) ø20.2 30 8 10 12 ø6 9 C1 1.5 1.5 3.5 8.3 4.5 2.5 M9×0.75 3 Ring Type 19.2 3.5 Mounting surface Hollow Shaft RK203 without switch type Potentiometer type NC 2 NC 1 NC 3 15.5 ø3 NC 3-1 (17.8) Output Wave（EC20A） Output Wave（EC20A） V1=V2=2.5V max. Test circuit ） （ ） ※ （ ） （ ） ※ ※Detent position cannot be specified for B signal. R t R Terminal A Terminal B t V1 5V （ Output waveform 5V DC V2 Encoder ON Terminal C Measurement condition：Rotation speed 360˚/s At R ＝ 5kΩ Chattering : 8ms max. OFF ON Sliding direction t : Masking time to avoid chattering Bounce : 5ms max. 283 EC20A 20mm Size Metal Shaft Type RK203 Circuit Diagram（RK203） 3 Encoders 2 1 Metal Shaft 20mm Size Metal Shaft Type / Attached Parts Insulated Shaft The following parts are included with the product. Unit:mm Nut Hollow Shaft 11 Washer 2 0.5 ø14 ø9.1 Ring Type M9×0.75 20mm Size Metal Shaft Type / Switch Specifications Switch type Momentary push switch Contact arrangement Single pole and single throw（Push-on） Travel（mm） 1.5±0.5 Operating force 4±2N Operating life 20,000 times Electrical performance 284 Rating 0.5A 16V DC (1mA 16V DC min. ratings） Contact resistance 100mΩ max. for initial period, 200mΩ max. after operating life. Insulation resistance 100MΩ min. 250V DC Voltage proof 300V AC for 1 minute or 360V AC for 2s Metal shaft Type 11mm size Series EC111 EC11K 20mm size EM11B EC11J EC20A/RK203 EM20B NEW Photo Self-return switch Incremental（Two phase A and B） Shaft types Single-shaft Operating direction Vertical — Features — 9/18 15/30 W 40/40 Magnetic type — Magnetic type 10.8 20.2 20 11 19.2 22.25 7.5 10 13 −30℃ to +85℃ −30℃ to +80℃ −10℃ to +70℃ 1,000,000 cycles 30,000 cycles 500,000 cycles ● ● — 11.7 D 13 H 5 12 14.2 4.5 Operating temperature range −40℃ to +85℃ Operating life 15,000 cycles Automotive use ● 100,000 cycles ● ● Life cycle (availability) 10mA 5V DC 10mA 5V±5% DC 1mA 5V DC 10mA 5V±5% DC 10mA / 1mA 15mA / － — 15mA / － 100MΩ min. 250V DC 100MΩ min.100V DC 10MΩ min. 50V DC 100MΩ min. 250V DC 250V AC for 1 minute or 300V AC for 2s 50V AC for 1 minute or 60V AC for 2s 300V AC for 1 minute or 360V AC for 2s Electrical performance Insulation resistance Mechanical performance Voltage proof 300V AC for 1 minute or 360V AC for 2s 300V AC for 1 minute or 360V AC for 1s Rotational torque （Without detent） 3 to 30mN･m — — — — 7mN･m max. Detent torque — 12±5mN･m 12±5mN･m（Initial） 12±4mN･m（After reflow） 10±5mN･m 40±20mN･m 8±5mN･m Push-pull strength 100N Shaft configuration Flat, Slotted, Serrated Terminal type Insertion Flat Reflow Insertion Switch type Push-on switch Contact arrangement Single pole and single throw（Push-on） Travel（mm） 0.5±0.3 1.5±0.5 0.5±0.3 1.5±0.5 0.5±0.3 1.5±0.5 Switch ＋2.5 −2 Specifications Operating force（N） 6 Rating Contact resistance Operating life Ring Type Rating Max./min. operating current （Resistive load） Hollow Shaft 18/18 Insulated Shaft Dimensions （mm） Surface Mount type — 16/16 Metal Shaft Number of pulse / Number of detent Encoders Output 4±2 0.1A 5V DC （500μA 5V DC min. ratings） 5±2 4±2 5±2 4±2 0.1A 5V DC （0.1mA 5V DC min. ratings） 100mΩ max. for initial period, 200mΩ max. after operating life. 20,000 times 1,000,000 100,000 1,000,000 100,000 times times times times Page 269 0.5 ＋0.3 −0.2 1.5±0.5 5.5±3 4±2 0.5 ＋0.4 −0.3 6±3 0.5A 16V DC 3A 16V DC 5mA 5V DC （50mA 12V DC max. ratings） （1mA 16V DC min. ratings） （10mA 16V DC min. ratings） 500mΩ max. for initial period, 100mΩ max. for initial period, 5mΩ max. after operating life. 200mΩ max. after operating life. 1,000,000 times 20,000 times 25,000 times 280 282 285 Encoders Soldering Conditions ・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 307 Encoders Cautions・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 308 Note ● Indicates applicability to all products in the series. 263 Encoders Soldering Conditions Reference for Manual Soldering Series Soldering time No. of solders EC05E, EC09E, EC10E, EC111, EC11B, EC11E, EC11G, EC11K, EC12D, EC12E, EC18A, EC21A, EC28A, EC35A, EC35AH, EC35B, EC40A, EC45A, EC50A, EC60B, EM11B, EM20B, EC21C 350℃ max. 3s max. 1 time EC11J 350±10℃ 3 ＋1 s 0 2 time Encoders Tip temperature Reference for Dip Soldering Dip soldering No. of solders Soldering temperature Soldering time EC09E, EC11B, EC111, EC11E, EC11G, EC11K, EC18A, EC21A, EC28A, EC35A, EC35AH, EC35B, EC50A, EC60B 100℃ max. 2 min. max. 260±5℃ 5±1s 2 time max. EC10E, EC12D, EC12E, EM11B 100℃ max. 1 min. max. 260±5℃ 3±1s 2 time max. EC40A 110℃ max. 1 min. max. 260℃ max. 10s max. 1 time EC45A 100℃ max. 2 min. max. 260℃ max. EM20B 80℃ max. 1 min. max. 260℃ max. 5s max. 2 time max. 3s max. 2 time max. Ring Type Example of Reflow Soldering Condition Temperature profile 300 Temperature (˚C ) Hollow Shaft Heating time Insulated Shaft Soldering surfacetemperature Metal Shaft Preheating Series A B 200 C D 100 Room temperature Time (s) Pre-heating E max. F max. G max. H max. Series A B C D E F G H No. of reflows EC11J 260℃ 230℃ 180℃ 150℃ 2 min. max. 3s 40s 4 min. max. 2 time max. EC05E 250℃ min. 230℃ min. 180℃ 150℃ 60s to 120s ー 30s to 40s ー 2 time max. EC21C 230℃ to 245℃ 220℃ 200℃ 150℃ 60s to 120s ー 25s to 60s 300 max. 1 time max. 注記 1. When using an infrared reflow oven, solder may sometimes not be applied. Be sure to use a hot air reflow oven or a type that uses infrared rays in combination with hot air. 2. The temperatures given above are the maximum temperatures at the terminals of the encoder when employing a hot air reflow method. The temperature of the PC board and the surface temperature of the encoder may vary greatly depending on the PC board material, its size and thickness. Ensure that the surface temperature of the encoder does not rise to 250℃ or greater. 3. Conditions vary to some extent depending on the type of reflow bath used. Be sure to give due consideration to this prior to use. 307