Thumbwheel Switch
Economical and Reliable Thumbwheel
Switch in Ultra-Small Size
■
Gold contacts are employed to provide
A7MA
maximum contact reliability
■
Printed circuit board employs epoxy paper
as the base material, with gold plating over
nickel plate for circuit pattern
■
Switch units can be assembled simply by
fitting the integral hook coupler of each unit
into the mating unit, thus eliminating the
need of nuts and bolts for assembly
Ordering Information
■
SWITCH UNITS
Part Number
Front mounting solder terminals
Light gray case
Black case
A7MA-206
A7MA-206-PM
A7MA-207
A7MA-206-1
A7MA-206-PM-1
A7MA-207-1
Front mounting PC board terminals
Light gray case
Black case
A7MA-206-P2
A7MA-206-P2-PM
A7MA-207-P2
A7MA-206-P2-1
A7MA-206-P2-PM-1
A7MA-207-P2-1
Output Code
06 (binary code)
(binary code w/+, – display)
07 (binary code w/diode provision)
Output Code
06 (binary code)
(binary code w/+, – display)
07 (binary code w/diode provision)
Back mounting solder terminals
Light gray case
Black case
–
A7MA-106
–
–
A7MA-106-PM
A7MA-107
Back mounting PC board terminals
Light gray case
Black case
–
A7MA-106-P2
–
–
A7MA-106-P2-PM
A7MA-107-P2
■
ACCESSORIES
Part Number
Accessory
End Cap
Spacer
For front mounting type switch assembly
Light gray
Black
A7M-2M
A7M-2P■
■
A7M-2M-1
A7M-2P■ -1
■
For back mounting type switch assembly
Light gray
Black
–
–
A7M-1M
A7M-1P■
■
Note: 1. When placing your order, please specify the model numbers and quantities of required switch units, end caps, and spacers,
respectively. (Note that switch units and accessories are not factory-assembled for shipment.)
2. Switch case, end cap, and spacer are made of polyacetal resin.
3. One of the following alphabetic codes must be filled into the boxed part of the model number to specify a legend to be hot
stamped on the required spacer.
4. End caps come as a set -- left and right.
Code
A
B
C
D
E
F
G
Legend
Hot stamp
not required
SEC
MIN
H
g
kg
mm
Code
H
J
K
L
Q
T
Legend
cm
m
°C
PCS
x10 SEC
0
A7MA
A7MA
Characteristics
Switching capacity
Carry current
Contact resistance
Insulation resistance
Dielectric strength
Operating force
Vibration
Shock
Ambient temperature
Humidity
Service life
Weight (per unit)
Note: Data shown are of initial value.
1 mA to 0.1 A 5 to 28 VDC (resistive load)
1 A max.
200 mΩ max.
10 MΩ min. (at 500 VDC) between nonconnected terminals
1,000 MΩ min. (at 500 VDC) between each terminal and noncurrent-carrying part
200 VAC, 50/60 Hz for 1 minute between nonconnected terminals
1,000 VAC, 50/60 Hz for 1 minute between each terminal and noncurrent-carrying part
300 g max.
10 to 55 Hz, 1.5 mm double amplitude
200 m/s
2
(approx. 20 G)
-10° to 65°C
-20° to 80°C
85% RH max. (at 40°C)
30,000 operations (steps) min.
20,000 operations (steps) min.
Approx. 1.1 g to 1.2 g
Operating
Storage
Mechanical
Electrical
Dimensions
Unit: mm (inch)
■
SWITCH UNITS
A7MA-1■
■
■
A7MA-1■
■
■ ■P2
Note:
Dimension * is 19 for the
switch with output code
“06” and 31 for the switch
with output code “07”
C
(6n + 16)
22 (0.87)
28 (1.10)
34 (1.34)
40 (1.57)
46
±
0.8 (1.81±0.03)
52
±
0.8 (2.05±0.03)
58
±
0.8 (2.28±0.03)
64
±
0.8 (2.52±0.03)
70
±
0.8 (2.76±0.03)
76
±
0.8 (3.00±0.03)
Panel cutout
No. of
units (n)
1
2
3
4
5
6
7
8
9
10
A
(6n + 6)
12 (0.47)
18 (0.71)
24 (0.94)
30 (1.18)
36
±
0.8 (1.42±0.03)
42
±
0.8 (1.65±0.03)
48
±
0.8 (1.89±0.03)
54
±
0.8 (2.13±0.03)
60
±
0.8 (2.36±0.03)
66
±
0.8 (2.60±0.03)
B
(6n + 11)
17 (0.67)
23 (0.91)
29 (1.14)
35 (1.38)
41 (1.61)
47 (1.85)
53 (2.09)
59 (2.32)
65 (2.56)
71 (2.80)
Note: 1. Unless otherwise specified, a tolerance of
±
0.4 mm applies to all dimensions.
2. Each model number applies to a single switch unit and not to the switch assembly as shown in the drawings.
2
A7MA
A7MA-2■
■
■ ■(-1)
A7MA-2■
■
■ ■-P2(-1)
A7MA
Note:
Dimension * is 19 for the switch with
output code “06” and 31 for the
switch with output code “07”
Panel cutout
No. of
units (n)
1
2
3
4
5
6
7
8
9
10
A
(6n + 8)
14 (0.55)
20 (0.79)
26 (1.02)
32 (1.26)
38 (1.50)
44 (1.73)
50 (1.97)
56 (2.20)
62 (2.44)
68 (2.68)
B
(6n + 10)
16 (0.63)
22 (0.87)
28 (1.10)
34 (1.34)
40 (1.57)
46 (1.81)
52 (2.05)
58 (2.28)
64 (2.52)
70 (2.76)
Note: 1. Unless otherwise specified, a tolerance of
±
0.4 mm applies to all dimensions.
2. Each model number applies to a single switch unit and not to the switch assembly as shown in the drawings.
3
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