Lighted Pushbutton Switch
Cylindrical 8-dia. Subminiature Series
Feature Short Mounting Depth
Round, square, and rectangular LED pushbutton
units
Models that can be used as an indicator also
available.
Requires only 18-mm mounting depth
Efficiency in wiring improved by terminals arranged
on the same surface.
Lenses and legends replaceable without tools
A3D
Ordering Information
When placing your order, specify the individual component part model numbers of the pushbutton unit, LED, lamp, and switch unit, as listed in
the ordering tables below.
Lighted Type
Pushbutton Unit
Switch Unit
Non-lighted Type
Pushbutton Unit
Switch Unit
A3Dj-500j
M2Dj-500j*
A3Dj-7jjj
M2Dj-7jjj*
A3Dj-501j
A3D-7jjj
* Model number unique
for indicator unit
Pushbutton Unit
Lighted Type, Built-in LED
Button color
Rectangular
Square
Round
Indicator
Button color
Rectangular
Square
Round
Red
Yellow
Green
White
A3DJ-500R
A3DJ-500Y
A3DJ-500GY
A3DJ-500W
A3DA-500R
A3DA-500Y
A3DA-500GY
A3DA-500W
A3DT-500R
A3DT-500Y
A3DT-500GY
A3DT-500W
Red
Yellow
Green
White
M2DJ-500R
M2DJ-500Y
M2DJ-500GY
M2DJ-500W
M2DA-500R
M2DA-500Y
M2DA-500GY
M2DA-500W
M2DT-500R
M2DT-500Y
M2DT-500GY
M2DT-500W
1
A3D
Switch Unit
Contact
configuration
fi
ti
Switch action
Terminal
Rectangular
Degree of protection: IP00
Square
Round
A3D
SPST-NO+
SPST-NC
SPST NC
Momentary
y
Alternate
Solder
PCB
Solder
PCB
Solder
PCB
A3DJ-7111
A3DJ-7112
A3DJ-7121
A3DJ-7122
M2DJ-7001
M2DJ-7002
A3DA-7111
A3DA-7112
A3DA-7121
A3DA-7122
M2DA-7001
M2DA-7002
A3DT-7111
A3DT-7112
A3DT-7121
A3DT-7122
M2DT-7001
M2DT-7002
For indication (no switch)
(
)
Specifications
Contact Ratings
DC (resistive load)
Note:
0.1 A, 30 VDC.
The minimum permissible load is 1 mA, 5 VDC.
Built-in LED Ratings
Item
Forward voltage V
F
Standard value (see
note)
Max. value
Forward current I
F
Permissible loss P
D
Reverse voltage V
R
Note:
Standard value
Absolute max. value
Absolute max. value
Absolute max. value
1.7 V
2.0 V
20 mA
50 mA
100 mW
4V
Red
2.2 V
2.5 V
20 mA
50 mA
125 mW
4V
Yellow
1.7 V
2.0 V
20 mA
50 mA
122 mW
4V
Green
Refer to VF vs. IF characteristics in Hints on Correct Use, Because no resistor is incorporated in the built-in LED, connect an appropri-
ate external resistance within the above limit.
Characteristics
Operating frequency
Mechanical: Momentary-action type: 120 operations per minute max.
Alternate-action type: 60 operations per minute max.
Electrical:
20 operations per minute max.
100 M! min. (at 500 VDC)
1,000 VAC, 50/60 Hz for 1 minute between terminals of same polarity
2,000 VAC, 50/60 Hz for 1 minute between terminals of different polarity and also between
each terminal and ground
Mechanical/malfunction durability: 10 to 55 Hz, 1.5 mm double amplitude
Mechanical durability: 500 m/s
2
(approx. 50 G)
Malfunction durability: 150 m/s
2
(approx. 15 G)
Operating:
−10_
to 55_C
35 to 85% RH
Mechanical:
Electrical:
Weight
Note:
Momentary-action type: 1,000,000 operations min.
Alternate-action type: 100,000 operations min.
100,000 operations per minute max.
Insulation resistance
Dielectric strength
Vibration
Shock
Ambient temperature
Humidity
Life expectancy
Approx. 3 g (see note)
The weight indicated here applies to the lighted type (SPST-NO).
2
A3D
Applicable Load Range
OF max.
RF min.
TT
LTA min.
PT max.
250 g
20 g
3.5"0.5 mm
0.5 mm
2.5 mm
A3D
3
A3D
A3D
Dimensions
Unless otherwise specified, a tolerance of
"0.4
mm applies to all dimensions.
The following dimensions apply to the switch unit with solder terminals.
Rectangular
A3DJ
Panel cutout
Square
A3DA
Panel cutout
10 min.
Round
A3DT
Legend Plate
A3DJ
A3DA
A3DT
Note:
1. The thickness is 0.8 mm.
2. Since the legend plate is made of polycarbonate, use alcohol-based paints such as melanin, phthalic acid, or acryl paint when
marking the legend.
4
A3D
A3D
Terminals/Connections
Type
SPST-NO
Solder terminal
Lighted type, non-lighted type
Indicator
Indicator
PCB terminal
Lighted type, non-lighted type
Indicator
5
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