Metal
Shaft
Insulated
Shaft
Hollow
Shaft
Ring
Type
210
Detector
Push
Slide
Rotary
Encoders
Power
Dual-in-line
Package Type
TACT SwitchTM
Custom-
Products
1. The operating temperature range for automotive applications can be raised upon request. Please contact us for
details.
2. Please place purchase orders per minimum order unit N (integer).
Notes
11mm Size Metal Shaft Reflow Type
EC11J Series
Compact and highly reliable type available in many varieties.
Encoder
Product Line
Flat
20
12±5
Product No.
Drawing
No.
Minimum
order unit
（pcs.）
EC11J0920402
EC11J1520402
EC11J0924411
EC11J1524413
EC11J0925403
EC11J1525402
EC11J0920602
EC11J1520602
EC11J0924602
EC11J1524604
EC11J0925602
EC11J1525602
EC11J0920802
EC11J1520803
EC11J0924802
EC11J1524802
EC11J0925802
EC11J1525802
Operating
life
（cycles）
Number of
detent
Number
of pulse
Actuator
configuration
Structure
Actuator
length
（mm）
Push-on
switch
Travel of push-
on switch
（mm）
Torque
（mN・m）
Reflow
Without
With
Without
With
Without
With
0.5
1.5
0.5
1.5
0.5
1.5
1
2
1
2
1
2
600500,000
1,000,000
18
30
18
30
18
9
15
9
15
9
30
18
30
18
30
18
30
18
30
18
30
18
30
15
9
15
9
15
9
15
9
15
9
15
9
15
100,000
10mA 5V DC
100,000cycles
500,000cycles
1,000,000cycles
Rating
ｰ40℃
to
＋85℃
Operating temperature range
Items Specifications
Operating life
Typical Specifications
Tray
Packing Specifications
600
300
Number of packages（pcs.）369×283×263
Export package
measurements
（mm）
1 case /Japan 1 case /export packing
Refer to P.212 for product varieties.
Refer to P.217 for product specifications.
Refer to P.212 for soldering conditions.
Automotive
Use
Metal
Shaft
Insulated
Shaft
Hollow
Shaft
Ring
Type
211
Detector
Push
Slide
Rotary
Encoders
Power
Dual-in-line
Package Type
TACT SwitchTM
Custom-
Products
Dimensions Unit:mm
Style
PC board mounting hole dimensions
（Viewed from mounting side）
PhotoNo.
Reflow applicable parts
Reflow applicable parts
with push-on switch
（travel 0.5mm/1.5mm）
PC board mounting detail
A slant line part hows
the solder land black part:
Do not solder and wiring
for electrical contact
1.9
1.6
6.3
4.5 8.2
5-1.3
8.5
4
5-2.4
5
9
10
12.6
12.5
19
16.5
5.5
13
7.5
3
11.7
15
18
8.1
2-R0.8
E
D
B
C
A
A
D
B
C
E
1.45
1.95
(20)
24.5
7
4.5
1.2
C1
(Switch01)
Mounting
surface
¿2.1Hole
10
¿5.975
4.45
R0.5
C1
5.05
0.5
1.3
1.8
2-R0.65
EC11J09
Type only
EC11J15
Type only
¿8.975
(Dummy
terminal)
PC board mounting detail
A slant line part hows
the solder land black part:
Do not solder and wiring
for electrical contact
1.9
1.6
6.3
4.5 8.2
5-1.3
8.5
4
5-2.4
5
9
10
12.6
12.5
19
16.5
5.5
13
7.5
3
11.7
15
18
8.1
2-R0.8
E
D
B
C
A
A
D
BC
E
1.45
1.95
(20)
24.5
7
4.5
1.2
C1
(Switch01)
Mounting
surface
¿2.1Hole
10
¿5.975
4.45
R0.5
C1
5.05
0.5
1.3
1.8
2-R0.65
EC11J09
Type only
EC11J15
Type only
¿8.975
(Dummy
terminal)
1
2
PC board mounting detail
A slant line part hows
the solder land black part:
Do not solder and wiring
for electrical contact
1.9
1.6
6.3
4.5 8.2
5-1.3
8.5
4
5-2.4
5
9
10
12.6
12.5
19
16.5
5.5
13
7.5
3
11.7
15
18
8.1
2-R0.8
E
D
B
C
A
A
D
BC
E
1.45
1.95
(20)
24.5
7
4.5
1.2
C1
(Switch01)
(Switch02)
Mounting
surface
¿2.1hole
10
¿5.975
4.45
R0.5
C1
Switch travel
0.5or1.5
5.05
0.5
1.3
1.8
2-R0.65
EC11J09
Type only
EC11J15
Type only
¿8.975
PC board mounting detail
A slant line part hows
the solder land black part:
Do not solder and wiring
for electrical contact
1.9
1.6
6.3
4.5 8.2
5-1.3
8.5
4
5-2.4
5
9
10
12.6
12.5
19
16.5
5.5
13
7.5
3
11.7
15
18
8.1
2-R0.8
E
D
B
C
A
A
D
B
C
E
1.45
1.95
(20)
24.5
7
4.5
1.2
C1
(Switch01)
(Switch02)
Mounting
surface
¿2.1hole
10
¿5.975
4.45
R0.5
C1
Switch travel
0.5or1.5
5.05
0.5
1.3
1.8
2-R0.65
EC11J09
Type only
EC11J15
Type only
¿8.975
11mm Size Metal Shaft Reflow Type EC11J Series
Encoder
Automotive
Use
Metal
Shaft
Insulated
Shaft
Hollow
Shaft
Ring
Type
217
Detector
Push
Slide
Rotary
Encoders
Power
Dual-in-line
Package Type
TACT SwitchTM
Custom-
Products
Test circuit 5VDCRTerminalARTerminalBRTerminalCTest condition Rotation speed
TerminalDABC switch
360°/s
Product Specifications
B
CCW CW
C
0˚
A
EC11B
EC09E/EC11E/EC11J/EC11K
EC111/EC11E
0B
Output Wave Circuit Diagram
V1＝V2＝2.5V max.
EC20A EC11J/EC11K
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
At R ＝ 5kΩ Chattering: 8ms max.
Bounce: 5ms max.
At R = 5kΩ Chattering
:
3ms max.
Bounce
:
2ms max.
At R = 5kΩ Chattering
:
5ms max.
Bounce
:
5ms max.
EC11EH
Attached Parts
Hexagonal nut
2
11
M7
×
0.75
2
11
M7
×
0.75
¿12
¿7.1
0.5
ø12
ø7.2
0.5
EC11B Series Unit:mm
Flat washer
A signal
B signal
Detent stabillity point
OFF ON
ONOFF
EC11B, EC11E
30 detents, 15 pulse
A signal
B signal
Detent stabillity point
ONOFF
OFF
ON
EC11B 20 detents, 20 pulse
CW direction CW direction
Shaft rotational Direction
The dotted lines indicate detent positions
Clockwise
ON
A
（
Terminal AÐC
）
A
（
Terminal AÐC
）
B
（
Terminal BÐC
）
B
（
Terminal BÐC
）
Signal Output
Counter-clockwise
OFF
ON
OFF
ON
OFF
ON
OFF
EC20A
A signal DetentpositionCWdirectionB signal
C signal
OFF
ON
OFF
ON
OFF
ON
EC11EH
5V DC
RR
Terminal B
Terminal A
Terminal C
Encoder
Test circuit
tt
V1
V2
5V
ONONOFF
Output waveform
Sliding direction
t : Masking time to avoid chattering
Measurementcondition：Rotationspeed360˚/s
At R ＝ 5kΩ
Chattering
:
2ms max.
Bounce
:
2ms max.
At R ＝ 5kΩ Chattering: 5ms max.
Bounce: 2ms max.
At R ＝ 5kΩ
Chattering
:
3ms max.
Bounce
:
2ms max.
V1＝V2＝1.5V max.
EC11BEC09E
EC11E
Sliding Noise
9mm, 11mm and 20mm Size Metal Shaft Encoders
Automotive
Use
Metal
Shaft
Insulated
Shaft
Hollow
Shaft
Ring
Type
198
Detector
Push
Slide
Rotary
Encoders
Power
Dual-in-line
Package Type
TACT SwitchTM
Custom-
Products
List of Varieties
Soldering
Dimensions
（mm）
Outline
specifications
Shaft types
Operating direction
Number of pulse/
Number of detent
Push switch
（Travel mm）
W
D
H
Manual soldering
Photo
Output
Dip soldering
Reflow soldering
Operating temperature range
Maximum operating current（Resistive load）
Electrical performance
Mechanical
performance
Environmental
performance
Output signal
Output wave
Sliding noise
Push-pull strength
Cold
Damp heat
Dry heat
Insulation resistance
Voltage proof
Rotational torque
Detent torque
Items
Contact arrangement
Travel （mm）Operating force （N）
Rating
Contact resistance
Operating life
Incremental
11.7
12
4.5
20.2
14.2 19.2
10
Vertical
9/18
15/30 18/18
Page
204 210 213
11mm size 20mm size
EC11K EC11J EC20A/RK203
EM20B
Metal shaft
Without
With
（0.5, 1.5）Without
With
（1.5）20
Optional function
Display function
22.25
13
40/40
Without
With
（0.5）Single-shaft
260±5℃, 3±1s
Please see P.212
260±5℃, 5±1s
260℃max. 3s max.
Type
Series
350℃max. 3s max.
–40℃to ＋85℃ｰ10℃
to
＋70℃
Automotive use
○○○
VHI：＋4.0V min.
VLO：0.5V max.（lsink=5mA）
100MΩmin. 250V DC
300V AC for 1minute
7mN
・
mmax.8±5mN
・
m
−30±3℃for 240h
80±3℃for 240h
40±2℃, 90 to 95%RH for 240h60±3℃, 90 to 95%RH for 240h
215
10mA
Output of A and B signals, proportionate to phase difference
Please see P.217
Please see P.217
Output phase
A, B（Squarewave）100MΩmin. 250V DC
10MΩmin. 50V DC
50V AC for 1minute
12±5mN・m
40±20mN・m
–40±2℃for 240h
85±2℃for 240h
–40±3℃for 240h
85±3℃for 240h
60±2℃, 90 to 95% RH for 240h
300V AC for 1minute
100N
Push-on Switch Specifications
EC11K/EC11J EC20A EM20B
Single pole and single throw（Push-on）0.5±0.3 1.5±0.5
5±2 4±2
0.5＋ 0.4
− 0.3
6±3
0.1A 5V DC
0.5A 16V DC
（1mA 16V DC min. ratings）
0.1A 5V DC
100mΩfor initial period; 200mΩafter operating life
1,000,000 times min. 100,000 times min. 20,000times min. 25,000times min.
Encoders
〇marks in "Available for automotive use" indicate that some of the series products can work at the operating
temperature range from -40℃to +85℃.
Note
Metal
Shaft
Insulated
Shaft
Hollow
Shaft
Ring
Type
212
Detector
Push
Slide
Rotary
Encoders
Power
Dual-in-line
Package Type
TACT SwitchTM
Custom-
Products
L1
S1
0.5
LB
¿8.975 C1
R
1
1
¿6
18 teeth knurl
●Detailed dimensions
L1LBR
15
20
7
10
5
7
●Detailed dimensions
L1
15
20
7
10
LB
Series（Reflow type）EC11J 260 230 180 120 240
A（℃）3s max. B（℃）C（℃）150
D（℃）E（s）F（s）G（s）
LB1.6
¿5.975
C0.5
1
L1
¿8.975
2）Flat Type
Unit:mm
3）Slotted Type
Unit:mm
1. Single-shaft Type
1）Knurled Type
Unit:mm
Configuration（Shaft diameter：φ6）
L1
LB
R
¿5.975
C1
¿8.975
Shaft Dimensions
1. The highlighted figures in shaft types refer to Product Specifications in P.215.
2. Products other than those listed in the above chart are also available. Please contact us for details
Notes
Configuration（Shaft diameter：φ5.975）Configuration（Shaft diameter：φ5.975）Product Varieties
L1LBS1
R1
20106 7
155 6 7
●Detailed dimensions
Example of Reflow Soldering Condition
1. Heating method: Double heating method with infrared heater.
2. Temperature measurement: Thermocouple 0.1 to 0.2φCA（K）or CC（T）at soldering portion（copper foil surface）. A heat resisting tape
should be used for fixed measurement.
3. Temperature profile
300
200
100
A
B
C
D
Time (s)
40 max.
F max.
E max.
G max.
Room
temperature
Temperature (ûC )
Pre-heating
1. The condition mentioned above is the temperature on the mounting surface of a PC board. There are cases where
the PC board's temperature greatly differs from that of the switch, depending on the PC board's material, size,
thickness, etc. The above-stated conditions shall also apply to switch surface temperatures.
2. Soldering conditions differ depending on reflow soldering machines. You are requested to verify the soldering
conditions thoroughly beforehand.
Notes
Soldering Conditions
11mm Size Metal Shaft Long Life Encoders