290
Encoders Metal
Shaft Insulated
Shaft Ring
Type
Through
Shaft Type
2-11.5
18.7
2-3.5
4.5
2-1.5
20
3-8
3-3.5
ø
23.7
2-12
35
2-35
ø
35
36.5
ø
25.25
3-3
29.4
29.4
36
2-36.4
2-28.6
4-4.4
2-ø2.1
1.5
2-5.1
4-R0.75
18.5
2-1.5
3-ø1 hole
90°
AC
5
B
ø1.5
3
90°
2-3.5
Mounting
surface
A B
C
ø28.8
2-11.5
18.7
2-3.5
4.5
2-1.5
20
3-8
3-3.5
ø
23.7
2-12
35
2-35
ø
35
36.5
ø
25.25
3-3
29.4
29.4
36
2-36.4
2-28.6
4-4.4
2-ø2.1
1.5
2-5.1
4-R0.75
18.5
2-1.5
3-ø1 hole
90°
AC
5
B
ø1.5
3
90°
2-3.5
Mounting
surface
A B
C
ø28.8
EC35A 35mm Size Ring Type
A low-profile unit with 4.5mm height and
good operation feel
■Typical Specifications
Items Specifications
Rating
10mA 5V DC
Operating life
50,000 cycles
Operating temperature range
−40℃ to ＋85℃
Refer to P.299 for soldering conditions.
Packing Specifications
Tray
Actuator length
（mm）
Number of packages （pcs.） Export package measurements
（mm）
1 case /Japan
1 case /export packing
20 420 840
540×360×380
25 350 700
ø28.8
2-3.5
4.5
3-8
3-3
2-3.5
20
29.4
29.4
36
2-36.4
2-28.6
4-4.4
2-ø2.6
2-1.5
2-5.1
2-3
4-R0.75
18.5
2-1.5
2-11.5
3-ø1
hole
90°
90°
AC
5
B
3-3.5
2-1.5
2-ø1.5
Mounting
surface
35
36.5
35
ø35
2-12
A B
18.7
ø23.7
ø25
C
ø28.8
2-3.5
4.5
3-8
3-3
2-3.5
35
20 36.5
29.4
29.4
36
2-36.4
2-28.6
4-4.4
2-ø2.6
2-1.5
2-5.1
2-3
4-R0.75
18.5
2-1.5
35
ø35
2-12
A B
2-11.5
18.7
ø23.7
ø25
3-ø1
hole
90°
90°
AC
5
B
3-3.5
2-1.5
2-ø1.5
C
Mounting
surface
Dimensions Unit:mm
Style PC board mounting hole dimensions
(Viewed from mounting side)
1
2
No. Photo
Shaded area: Wiring prohibited area
Shaded area: Wiring prohibited area
EC35A1520402
Actuator length 20mm
EC35A0930401
Actuator length 20mm
Product Line
Product No. Drawing
No.
Actuator length
（mm）
Number of
detent Number of pulse
Detent torque
（mN・m）
30
30
18
15
15
9
420
350
840
700
20
25
20
18±7
3 0 ±15
22±8
EC35A1520402 １
EC35A1550502
EC35A0930401
3
2
Minimum order unit （pcs.）
Japan Export
291
Encoders Metal
Shaft Insulated
Shaft Ring
Type
Through
Shaft Type
5V DC
RR
Terminal B
Terminal A
Terminal C
Encoder
Test circuit
tt
V1
V2
5V
ON ONOFF
Output waveform
Sliding direction
t : Masking time to avoid chattering
Measurementcondition：Rotationspeed360˚/s
A signal
B signal ON
ON
OFF
OFF
Detent stability position
CW direction
Output Wave Sliding Noise
V1=V2=2.5V max.
At R = 5kΩ
Chattering : 5ms max. Bounce : 5ms max.
3-3.5
3-7
18.7
35
ø23.7
ø35
2-35
2-12
21.5
36.5
22.6
ø25.25
2-3.5
4.5
25
2-1.5
2-3.5
3-16.5
3-5
3-3
ø28.8
2-ø1.5
5
90°
2-28.6
2-36.4
4-4.4
18.5
1.5
3
36
2-1.5
2-5.1
4-R0.75
3-ø1 hole
ø1.5 hole
29.4
A B
AC B
Mounting
surface
C
3-3.5
3-7
18.7
35
ø23.7
ø35
2-35
2-12
21.5
36.5
22.6
ø25.25
2-3.5
4.5
25
2-1.5
2-3.5
3-16.5
3-5
3-3
ø28.8
2-ø1.5
5
90°
2-28.6
2-36.4
4-4.4
18.5
1.5
3
36
2-1.5
2-5.1
4-R0.75
3-ø1 hole
ø1.5 hole
29.4
A B
ACB
Mounting
surface
C
3
Shaded area: Wiring prohibited area
EC35A1550502
Actuator length 25mm
Dimensions
EC35A／35mm Size Ring Type
Unit:mm
Type
Ring type
28mm size 35mm size
Series
EC28A EC28C EC35A EC35AH EC35CH
Photo
Output
Incremental （Two phase A and B ） Incremental
（Three phase A, B and C）
Shaft types
Ring type
Number of pulse /
Number of detent
15 / 3 0
18 /18 15 / 3 0 9 /18
15 / 3 0
6×A B C / 18
10×A B C / 3 0 6×A B C / 18
Dimensions
（mm）
W
28
35
35.2
D
29 29.5 36
H
44.5
Operating temperature range
−40℃ to ＋85℃
−40℃
to
＋90℃
−40℃ to ＋85℃
−40℃
to
＋90℃
Operating life
50,000 cycles
Automotive use
●●●●
●
Life cycle (availability)
Electrical
performance
Rating
10 m A 5 V D C
Max./min. operating
current（Resistive load）
10mA /1mA
Insulation resistance
10 0 MΩ m i n . 25 0 V D C
Voltage proof 3 0 0V A C f o r 1mi n u te
or 360V AC for 2s
3 0 0V A C f o r 1mi n u te
or 360V AC for 1s
3 0 0V A C f o r 1m i n u t e
or 360V AC for 2s
3 0 0V A C f o r 1mi n u te
or 360V AC for 1s
Mechanical
performance
Detent torque
7±5mN･m
12±7 m N･m
2 0 ±1 0 m N ･ m
22±11mN･m （Initial）
16±7 m N･m
（After reflow）
30±15mN･m（Initial）
2 0 ±1 0 m N ･ m
（After reflow）
18±7 m N･m
22±8mN･m
3 0 ±15 m N ･ m
12 ±5 m N･m
18±7 m N･m
3 0 ±15 m N ･ m
30±15mN･m （Initial）
2 0 ±1 0 m N ･ m
（After reflow）
Push-pull
strength
10 0 N
Shaft configuration
Ring type
Terminal type
Insertion
Switch
Specifications
Switch type
—————
Contact
arrangement
—————
Travel （mm）
—————
Operating force （N）
—————
Switch ON position
—————
Rotational torque
—————
Rating
—————
Contact resistance
—————
Operating life
—————
Page
288 290 292
Encoders Soldering Conditions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 299
Encoders Cautions ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 300
Note
●Indicates applicability to all products in the series.
257
Encoders Metal
Shaft Ring
Type
Insulated
Shaft Through
Shaft Type
299
Encoders Metal
Shaft Insulated
Shaft Ring
Type
Through
Shaft Type
Soldering surfacetemperature
Soldering temperature
Heating time Soldering time No. of solders
EC10E, EC12D, EC12E
EM11B
EC45A
EC40A
EC09E, EC11B, EC111, EC11E, EC11G, EC11K,
EC11M, EC11N, EC18A, EC21A, EC28A, EC35A,
EC35AH, EC50A, EC60B
Series
10 0 ℃ m a x . 260±5℃2 min. max. 5 ±1s 2 times max.
10 0 ℃ m a x .
10 0 ℃ m a x .
10 0 ℃ m a x .
110 ℃ m a x .
260±5℃
260℃ max.
260℃ max.
260℃ max.
1 min. max.
1 min. max.
2 min. max.
1 min. max.
3 ±1s
3s max.
5s max.
10 s ma x .
2 times max.
2 times max.
2 times max.
1 time
Preheating Dip soldering
Reference for Dip Soldering
Example of Reflow Soldering Condition
Reference for Manual Soldering
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.
Notes
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 s
EC11J
EC05E, EC09E, EC10E, EC111, EC11B, EC11E,
EC11G, EC11K, EC11M, EC11N, EC12D, EC12E,
EC18A, EC21A, EC28A, EC35A, EC35AH, EC40A,
EC45A, EC50A, EC60B, EM11B, EC21C, EC28C,
EC35CH
Series
350℃ max. 3s max. 1 time
3 5 0 ±10 ℃ 2 times
Tip temperature Soldering time No. of solders
＋1
　0
EC05E
EC21C
EC28C, EC35CH
EC11J
Series
260℃ 230℃ 18 0 ℃ 15 0 ℃ 2 min. max. 3s 40s 4 min. max. 2 times max.
250℃ min.
230℃ to 245℃
260℃
230℃ min.
220℃
230℃
18 0 ℃
200℃
18 0 ℃
15 0 ℃
15 0 ℃
15 0 ℃
60s to 120s
60s to 120s
2 min. min.
ー
ー
3s
30s to 40s
25s to 60s
40s
ー
300s max.
230s max.
2 times max.
1 time max.
1 time max.
A B C D E F G H No. of reflows