Type

Ring type

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

9/18

15/30

15/30

15/30

18/18

15/30

6×ABC/18

10×ABC/30

15/30

Dimensions

（mm）

W

21.6

22

28

35

35

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

Automotive use

●

●

●

●

●

●

Life cycle (availability)

Electrical

performance

Rating

10mA 5V DC

Max./min. operating

current（Resistive load）

10mA / 1mA

Insulation resistance

100MΩ min. 250V DC

Voltage proof

300V AC for 1minute

or 360V AC for 2s

300V AC for 1minute

or 360V AC for 1s

300V AC for 1minute or 360V AC for 2s

300V AC for 1minute

or 360V AC for 1s

Mechanical

performance

Detent torque

7±5mN･m

16±7mN･m

17±8mN･m（Initial）

7±5mN･m

12±7mN･m

20±10mN･m

18±7mN･m

12±5mN･m

18±7mN･m

30±15mN･m

20±10mN･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

Travel（mm）

—

—

—

—

—

2.8±0.5

Operating force（N）

—

—

—

—

—

3.8±1.5

Switch ON position

—

—

—

—

—

15°±5°

Rotational torque

—

—

—

—

—

40±25mN・m

Rating

—

—

—

—

—

10mA 5V DC

Contact resistance

—

—

—

—

—

200mΩ max.

Operating life

—

—

—

—

—

15,000 cycles

Page

296

298

299

300

302

Encoders Soldering Conditions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 307

Encoders Cautions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 308

Note

（After reflow）

265

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