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Ring encoder with 4mm height contribute to space saving and multifunctioning 21mm Size Ring TypeEC21A EC21C ■ Typical Specifications Items Specifications Rating 10mA 5V DC Operating life 50,000 cycles Operating temperature range −40℃ to ＋85℃ Product Line Dip 16±7 7±5 17±8 （Initial） , 12＋7 −4 （After reflow） Reflow 12 EC21A1520401 EC21A1520407 EC21A0920401 EC21C1520401 Product No. EC21A1540401 No.Structure Detent torque （mN ・ m） Actuator l e n g t h（ m m ） Number of detent Number of pulse 600 1,20 0 240 600 640 480 1,20 0 640 Minimum order unit （pcs.） Japan Export 1.5 90˃ C A B 22.3 2.6 2.6 23.6 16.6 23.2 3–ø1 holes 90˃ No. Dimensions Unit:mm PC board mounting hole dimensions (Viewed from mounting side)Style Photo Do not wire the shaded area Packing Specifications Tray Product No. Number of packages （pcs.） Export package measurements （mm）1 case /Japan 1 case /export packing EC21A09 240 480 375×285×223 EC21A15 600 1,20 0 3 6 4 × 5 0 8 ×19 2 EC21A1520407 600 1,20 0 360×540×290 EC21C 640 640 310×400×185 Refer to P.307 for soldering conditions. NEW

EC21A/EC21C／21mm Size Ring Type A signal B signal OFF ON ON OFF Detent stability position CW direction 5V DC RR Terminal BTerminal A Terminal C Encoder Test circuit tt ON ON OFF Output waveform Sliding direction t : Masking time to avoid chattering.FBTVSFNFOUDPOEJUJPOɿ3PUBUJPOTQFFE˚/s Output Wave Sliding Noise ※Detent position cannot be specified for B signal. V1=V2=2.5V max. At R = 5kΩ Chattering : 5ms max. Bounce : 5ms max. No. Dimensions Unit:mm PC board mounting hole dimensions (Viewed from mounting side)Style Photo Do not wire the shaded area Do not wire the shaded area 1.5 90˃ C A B 22.3 2.6 1.8 2.6 23.6 16.6 23.2 3–ø1 holes ø1.5 hole 90˃ Mounting surface 3.5 9 2.5 3-2 4-4 3-2 21.6 120° 120° ø12.2 0.7 21.6 4-2.5 ø10.8 120° 120° 2-8 A B C ø15.4 4-3.05 12.2 21.6 10.8 3-2.1 2-2.6 120° 120° 120° 120° A B C 2-2.5 3-φ1.45 14.5 3-1.5 3 3-2.05 15.4 3.5 3-C0.3 22.3 2-16.6 2-23.2 23.6 3- 1.05 hole 5 2-2.65 2-1.55 3-3 3-1.55 2.6 90°30° 16.3 8.152-8 4 3-8 Mounting surface 2-φ1.475 2-φ0.95 φ15.4 3-2.1 0.8 0.8 2-2 C0.2 2-1.6 122 Mounting surface 90°30° 16.3 8.15 22.3 2- 16.6 2-23.2 23.6 3-φ1.05holes 5 2-2.65 2- 1.55 3-3 3- 1.55 2.6 φ10.8 φ12.2 3-2.05 4-4.1 3-0.625 120° 120° 120° 120° 21.65 4-2.6 2-8 A B C 4-3.05 12.2 21.6 10.8 3-2.1 2-2.6 120° 120° 120° 120° A B C 2-2.5 3-φ1.45 14.5 3-1.5 3 3-2.05 15.4 3.5 3-C0.3 22.3 2-16.6 2-23.2 23.6 1.05 hole 5 2-2.65 2-1.55 3-3 3-1.55 2.6 90°30° 16.3 8.152-8 4 3-8 Mounting surface

21mm size 28mm size 35mm size Series EC21A EC21C EC28A EC35A EC35AH EC35B Photo Output Incremental （Two phase A and B ） Incremental （ Three phase A, B and C） Incremental （Two phase A and B ） / Self-return switch Shaft types Ring type Number of pulse / Number of detent 15/3 0 15/3 0 15/3 0 18 /18 15/3 0 6×A BC /18 10×A BC/30 15/3 0 Dimensions （mm） W 21.6 22 28 D 21.6 29 37 H 4 4.5 12.1 Operating temperature range −40℃ to ＋85℃ Operating life 50,000 cycles 30,000 cycles Life cycle (availability) Electrical performance Rating 10m A 5V DC Max./min. operating current（Resistive load） 10mA / 1mA Insulation resistance 100MΩ m in. 250V DC Voltage proof 3 0 0V A C f or 1minute or 360V AC for 2s 3 0 0V A C f or 1minute or 360V AC for 1 s 300V AC for 1minute or 360V AC for 2s 3 0 0V A C f or 1minute or 360V AC for 1 s Mechanical performance Detent torque 7±5mN･m 16±7mN･m 17±8mN･m （Initial） 12＋ 7 4 mN･m 7±5mN･m 12±7mN･m 2 0 ±10 m N･m 18±7mN･m 12±5mN･m 18±7mN･m 3 0 ±15 m N･m 2 0 ±10 m N･m Push-pull strength Push 100N Pull 100N Shaft configuration Ring type Terminal type Insertion Switch Specifications Switch type — — — — — Self-return switch Contact arrangement — — — — — Single pole and double throw Operating force （N） — — — — — 3 . 8 ±1. 5 Switch ON position — — — — — 15° ±5° Rotational torque — — — — — 4 0 ± 2 5 m N・m Rating — — — — — 10m A 5V DC Contact resistance — — — — — 200mΩ max. Operating life — — — — — 1 5,000 cycles Page 296 298 299 300 302 Encoders Cautions Note

  • Indicates applicability to all products in the series. （After reflow） 265 Encoders Metal Shaft Ring Type Insulated Shaft Hollow Shaft NEW

Soldering surfacetemperature Soldering temperatureHeating time Soldering time No. of solders EC10E, EC12D, EC12E, EM11B EC45A EC40A EM20B EC09E, EC11B, EC111, EC11E, EC11G, EC11K, EC18A, EC21A, EC28A, EC35A, EC35AH, EC35B, EC50A, EC60B Series 100℃ ma x . 260±5℃2 min. max. 5±1s 2 time max. 100℃ ma x . 100℃ ma x . 110 ℃ m a x . 80℃ max. 260±5℃ 260℃ max. 260℃ max. 260℃ max. 1 min. max. 2 min. max. 1 min. max. 1 min. max. 3±1s 5s max. 10s ma x . 3s max. 2 time max. 2 time max. 1 time 2 time max. Preheating Dip soldering Reference for Dip Soldering Example of Reflow Soldering Condition Reference for Manual Soldering EC05E EC21C EC11J Series 250℃ min. 230℃ to 245℃ 230℃ min. 220℃ 180℃ 200℃ 15 0 ℃ 15 0 ℃ 60s to 120s 60s to 120s ー ー 30s to 40s 25s to 60s ー 300 max. 2 time max. 1 time max. A B C D E F G H No. of reflows Temperature profile 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. 注記 300 200 100 A B C Time (s) G max. F max. H max. E max. Room temperature Temperature (˚C ) Pre-heating D Encoders Soldering Conditions 3 sEC11J EC05E, EC09E, EC10E, EC111, EC11B, EC11E, EC11G, EC11K, EC12D, EC12E, EC18A, EC21A, EC28A, EC35A, EC35AH, EC35B, EC40A, EC45A, EC50A, EC60B, EM11B, EM20B, EC21C Series 350℃ max. 3s max. 1 time 3 5 0 ±10 ℃ 2 time Tip temperature Soldering time No. of solders