Lighted PushButton Switch
Cylindrical 8mm dia. Subminiature
Series Featuring Short Mounting Depth
Round, square and rectangular LED pushbutton
units.
Indicator types also available.
Requires only 18mm mounting depth.
Efficiency in wiring improved by terminals arranged
on the same level.
All LEDs, lamps, lenses and legends replaceable
without tools.
Degree of protection conforms to IP40.
A3D
Ordering Information
Illuminated types
When placing your order, specify the individual
component part numbers of the pushbutton unit, LED,
lamp and switch unit, as listed in the ordering tables
below.
Pushbutton Unit
Switch Unit
A3D---500-
M2D---500-*
* Model number unique for
indicator unit
A3D---7---
M2D---7---*
* Model number unique for
indicator unit
Lighted type, Built-in LED
Shape
Rectangular
Square
Round
Pushbutton Unit
Indicator
Shape
Button
colour
Rectangular
Square
Round
Button
colour
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
Degree of protection
Appearance
M2DJ--500R
M2DJ--500Y
M2DJ--500GY
M2DJ--500W
M2DA--500R
M2DA--500Y
M2DA--500GY
M2DA--500W
IP40
M2DT--500R
M2DT--500Y
M2DT--500GY
M2DT--500W
Switch Unit
Rectangular
Square
Round
Contact configuration
SPST--NO+ SPST--NC
Switch
action
Momentary
Alternate
Terminal
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 (without switch)
OMRON Electronics Technical Help Desk on 0181-450 4646
1
A3D
A3D
Specifications
Contact Ratings
DC (Resistive load)
Note:
0.1A, 30VDC
The minimum permissible load is 1mA, 5VDC
Built-in LED Ratings
Item
Forward voltage V
F
Forward current I
F
Permissible loss P
D
Reverse voltage V
R
LED colour
Standard value*
Max. value
Standard value*
Absolute max. value
Absolute max. value
Absolute max. value
Red
1.7V
2.0V
20mA
50mA
100mW
4V
Yellow
2.2V
2.5V
20mA
50mA
125mW
4V
Green
1.7V
2.0V
20mA
50mA
122mW
4V
*
Refer to V
F
vs. I
F
characteristics in Hints on Correct Use. Because no resistor is incorporated in the LED, connect an appropriate external
resistance within the above limit.
Applicable load range
Voltage (VDC)
Current (mA)
Note: The load range shown above is applicable only during
the standard conditions.
Operating frequency Mechanical
Electrical
Insulation resistance
Dielectric strength
Momentary-action type: 120 operations per minute max.
Alternate-action type: 60 operations per minute max.
20 operations/minute max.
100MW min. (at 500VDC)
1,000VAC, 50/60Hz for 1 minute between terminals of same polarity
2,000VAC, 50/60Hz for 1 minute between terminals of different polarity and also between each
terminal and ground
Shock
Ambient temperature
Humidity
Life expectancy
Destruction
Malfunction
Approx. 500m/s
2
(50G)
Approx. 150m/s
2
(15G)
Operating: --10_C to 55_C
35 to 85% RH
Mechanical
Electrical
Momentary-action type: 1,000,000 operations min.
Alternate-action type: 100,000 operations min.
Approx. 3g
Weight
Operating Characteristics
OF max.
RF min.
TT
LTA min.
PT max.
250g
20g
3.5¦0.5mm
0.5mm
2.5mm
2
LEADERS IN ELECTRONIC COMPONENTS
Card
Readers
Opto--
Switches
100,000 operations min.
Relays
Vibration
Malfunction
10 to 55Hz, 1.5mm double amplitude
Lighted
Pushbuttons
Characteristics
Micro
Switches
DIP
Switches
Mechanical
Key Switches
A3D
A3D
Assembly/Disassembly
Mounting directions for switch and pushbutton
unit
1. Insert the pushbutton unit in the switch unit so that the circular
shaped claw outside the projection of the switch unit mates
with the claw on the upper part of the switch unit.
2. The pressure applied during the insertion should be 2.5kg
max.
Note:
If the LED terminal is bent , it may not align with the mating
hole. Before insertion, check to see if any LED terminal is
bent and, if so, straighten it. The inserting direction of the
LED for the pushbutton unit is opposite to that for the indica-
tor unit. Pay attention to the mounting direction of the legend
plate.
Projection
·
The tightening torque of the mounting nut should be less than
5kg--cm.
·
Solder the terminals after mounting the nut. Otherwise, the
terminals, when thickened by solder, may prevent the nut from
being screwed down onto the switch unit.
Panel
Mounting nut
Construction
Lens
Legend plate
Diffuse plate
Pushbutton
unit
Curved claw
Removing the pushbutton unit
While holding the recessed portions on both sides, firmly and steadily
pull out the top of the pushbutton unit with your thumb and forefinger.
Pulling out the cap with pliers or a similar tool will damage the cap.
LED
Recessed
portions
Switch unit
Nut
Mounting the switch unit on panel
Nut mounting
·
Insert the switch unit from the front of the panel and tighten the
mounting nut inserted from the rear of the panel.
Wiring
·
Finish soldering within 5 seconds with a 30 watt soldering iron, or
·
Since a projection exists on the rear portion of the switch unit, if the
mounting unit cannot be fitted into position, turn the nut slightly.
within 3 seconds at a solder temperature of 240_C. To avoid
deforming the softened plastic switch unit base, do not apply any
force to the switch unit for about a minute after soldering.
·
Use a non-corrosive, resin-based soldering flux.
Hints on Correct Use
LED
·
Because no resistor is incorporated in the LED of the lighted
pushbutton switch, connect an appropriate external resistor.
·
Make sure that the resistance of the resistor is within the
permissible range determined by the LED characteristics. The
forward current of the LED must be 8mA minimum.
equation:
·
The resistance of the external resistor can be obtained by this
R=E--V
F
/I
F
(W)
where,
E: operating voltage (V)
V
F
: LED forward voltage (V)
I
F
: LED forward current (mA)
Determine the resistance of the external resistor that satisfies the
characteristics of the LED. However, the average LED forward
current must be 8mA or more.
·
Example of resistance calculation
When using a red LED where E=24V, I
F
=20mA and Ta=25_C,
from the VFvs. IF characteristics on the right, forward voltage V
F
is 1.7V, when 20mA of I
F
flows through the LED. Substituting
these values for the variables in the above equation,
R=24(V) -- 1.7(V)=1111(W)
0.02(A) (or 20mA) (or 1.1kW)
Therefore, the estimated resistance is 1kW, 1W.
OMRON Electronics Technical Help Desk on 0181-450 4646
5
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