EM20B ALPS [ALPS ELECTRIC CO.,LTD.], EM20B Datasheet - Page 2

• Manufacturer Part Number: EM20B
• Description: 20mm Size Metal Shaft Magnetic Type
• Manufacturer: ALPS [ALPS ELECTRIC CO.,LTD.]

No.
2
3
Dimensions
LED Unit Recommended Drive Circuit Block Diagram
（travel 0.5mm）
（travel 0.5mm）
With push-on switch
With LED
With push-on switch
Common
select signal
ø21.5
A
B
3
L1 L31
20
ø4
20
9˚
Style
ø4
2.4
3
LED
Encoder
20mm Size Metal Shaft Magnetic Type
ø18.6
5
6
8
7
4
C0.5
Switch travel
C0.5
Switch
8 bit latch driver shift register
travel
0.5
2
0.5
1
3 10 12 11
16
Driver
5.5
1
3.6
19
Lamp house Top : Black
13
3.5
9
Snap- in
3.5
3.9
3.9
Side : White
Snap-in
DATA (display data)
LATCH (display data latch signal)
CLK (data transfer clock)
6-ø0.6 holes
PC board mounting hole dimensions
（Viewed from mounting side）
12-ø0.8 holes
1.8
B
S
G
1
B
29.25˚
11.1
V
5
A
B
1
G
A
S
V
2
A
1.8
29.25
10.38
13.83
16.63
11.1
6.43
2. 1 8
5
VA, VB MMM Power supply
GA, GB MMM Ground
A, B MMMMMMMM Out put
EM20B
12
2-ø1
Unit:mm
+0.1
0
Series
Detector
Push
Slide
Rotary
Encoders
Power
Dual-in-line
Package Type
TACT Switch
Custom-
Products
Incremental
Type
Absolute
Type
201
TM