Encoders
List of Varieties
Type
Series
EC11G
Metal shaft
11mm size
Insulated shaft
20mm size
12mm size
EC12E
EC12D
EC11J
EC11K
EC20A/RK203
Standard detent Without detent
With push-on switch
Detector
Photo
Output
Shaft types
Operating direction
Number of pulse/
Number of detent
Push switch
（Travel
mm）
Optional
functions
Changeover angle
W
Dimensions
（mm）
D
H
Manual soldering
Soldering
Dip soldering
Reflow soldering
Operating temperature range
–30℃ to
＋85℃
Maximum operating current Resistive load）
（
Output signal
260±5℃, 5±1s
Please see P.189
–40℃ to
＋85℃
10mA
–30℃ to
＋80℃
1mA
–10℃ to
＋70℃
5mA
–40℃ to
＋85℃
10mA
12
4.5
15/30
Without
With
（1.5）
9/18
15/30
Without
With
（0.5,
1.5）
Incremental
Single-shaft
Vertical
18/18
Without
With
（1.5）
12/12
24/24
Without
15/30
With
（0.5）
Push
Slide
Rotary
Encoders
Power
Dual-in-line
Package Type
11.7
14.2
2.0
19.2
10
350℃ max. 3s max.
260±5℃, 5±1s
260℃±5℃, 3±1s
12.4
13.2
5
12.5
11.7
5V
Outline
specifications
Electrical performance
Mechanical Environmental
performance performance
Push-on Switch
Specifications
TACT Switch
TM
Custom-
Products
Output of A and B signals, proportionate to phase difference
A signal OFF
ON
ON
Output wave
Please see P.191
B signal
OFF
Incremental
Type
Absolute
Type
CW direction
Detent stabillity point
（
When the switch is provided
）
V
1
＝V
2
＝1.5V
max.
Test circuit
R
Terminal A
R
Terminal B
5V DC
Output waveform
t
t
V
1
V
2
Sliding noise
Please see P.191
Encoder
Terminal C
ON
OFF ON
Sliding direction
Measurement condition：Rotation speed 360
û/s
t : Masking time to avoid chattering
Insulation resistance
Voltage proof
Rotational torque
Detent torque
Push-pull strength
Cold
Dry heat
Damp heat
Circuit・number of contacts
Travel mm）
（
Rating
Contact esistance
Operating life
Page
Operating force
（N）
6
＋
2.5
−
2
100MΩ min. 250V DC
300V AC for 1minute
・
7
＋
3
mN m
−
4
10±7mN m
・
12±5mN m
・
100N
–40±3℃ for 240h
85±3℃ for 240h
60±2℃, 90 to 95% RH for 240h
Single pole and single throw（Push-on）
0.5±0.3 1.5±0.5 0.5±0.3 1.5±0.5 0.5±0.3
5±2
4±2
0.5A 16V DC
（1mA
16V DC min. ratings）
4±2
5±2
1.5±0.5
At R = 10kΩ
Chattering : 3ms max.
Bounce : 2ms max.
10MΩ min. 50V DC
50V AC for 1minute
10mN m max.
・
25±15mN m
・
40±15mN m
・
At R = 5kΩ
Chattering : 3ms max.
Bounce : 2ms max.
100MΩ min. 250V DC
300V AC for 1minute
or360V
AC for 1s.
40±20mN m
・
3±2mN m
・
3
to
20mN m
・
5±3mN m
・
10±5mN m
・
80N
100N
–40±3℃ for 240h±10h
85±3℃ for 240h±10h
60±2℃, 90 to 95%RH for 240h±10h
Single pole and single throw（Push-on）
0.5
±0.3
3
＋
1.5
−
1.0
6
＋
2.5
−
2
1mA 5V DC
100mΩfor initial period; 200mΩafter operating life
30,000times min.
192
0.1A 5V DC
4±2
0.5A 16V DC
（1mA
16V DC min. ratings）
100m for initial period; 200m after operating life
Ω
Ω
20,000times min.
181
1,000,000 500,000 1,000,000 100,000
times
times
times
times
min.
min.
min.
min.
187
20,000times
min.
190
177
ALPS [ ALPS ELECTRIC CO.,LTD. ]
