A3AT90L100R - OMRON - Datasheet.Live

A3A

Lighted Pushbutton Switch

Compact High-capacity

Push-button Switch

●Ideal for use as a high breaking capacity Power

Switch.

●Switches from micro load (minimum applicable load:

5 VDC 1mA) to high capacity load.

List of Models

Model Number Structure

■Model Number Legend (Ordering as a Set)......

RoHS Compliant

Refer to Safety Precautions for All Pushbutton Switches and

Safety Precautions on page 8.

●Non-lighted Push-button Switches ●Lighted Push-button Switches

Appearance Model Illumination Appearance Model

Square A3AA-9@

@1-00@

LED

surface

illumination

Square A3AA-9@

@1-00E@

Round A3AT-9@

@1-00@Round A3AT-9@

@1-00E@

The model numbers used to order sets of Units are illustrated below.

One set comprises the Pushbutton (LED lamp built-in) and Switch.

For information on combinations, refer to Ordering Information.

A3AA-90K1-00E R

(1) Shape of Pushbutton

(2) Terminal

(3) Switch Specifications

Symbol Shape

A Square

T Round

Symbol Ty p e

0 Solder

1PCB

Symbol Operation Contact type

A Momentary SPDT 3 A at 125 VAC,

2 A at 30 VDC

B Alternate

K Momentary

SPST-NO

6 A at 125 VAC,

2 A at 250 VAC,

4 A at 30 VDC

L Alternate

(

)

(

)

(4) Illumination

Symbol Operation

00 Non-lighted

00E Surface illumination

(5) Color

1. Pushbutton

(Non-lighted Models)

2. LED (Surface

Illumination Models)

* Common to both lighted and

non-lighted models.

Symbol Color

L Light gray

RRed*

Y Yellow*

G Green*

ABlue

BBlack

DDark gray

HGray

Symbol Color

RRed

Y Yellow

GGreen

(1) (2) (3) (5)(4)

■Specifications: Refer to page 3. ■Dimensions: Refer to page 5.

■Accessories: Refer to page 2.

A3A Lighted Pushbutton Switch

List of Models

SPST-NO

Note: The above models each have a SPST-NO contact that can switch 6 A at 125 VAC, 2 A at 250 VAC, and 4 A at 30 VDC. When ordering any of the above models,

replace @ of the model number with a code to indicate the pushbutton color of the model (i.e., replace @ with R, Y, G, L, A, B, D, H, and L). The pushbutton of

an A3A does not illuminate if the color of the pushbutton is dark gray, gray, light gray, blue, or black.

SPDT

■Accessories

Flange (Select according to panel color.)

Note: An A3A with solder terminals is provided with a round or square black flange and leaf spring. A round black flange is provided with each A3A having solder

terminals and a round pushbutton. A square black flange is provided with each A3A having solder terminals and a square pushbutton.

Appearance Terminal Operation Illumination Model Color symbol for

pushbutton

Minimum

packing unit

Square/A3AA

Solder

Momentary Non-lighted A3AA-90K1-00@

(Non-lighted)

R (red)

Y (yellow)

G (green)

L (light gray)

A (blue)

B (black)

D (dark gray)

H (gray)

(Surface illumination)

R (red)

Y (yellow)

G (green)

100

LED surface illumination A3AA-90K1-00E@

Alternate Non-lighted A3AA-90L1-00@

LED surface illumination A3AA-90L1-00E@

PCB

Momentary Non-lighted A3AA-91K1-00@

LED surface illumination A3AA-91K1-00E@

Alternate Non-lighted A3AA-91L1-00@

LED surface illumination A3AA-91L1-00E@

Round/A3AT

Solder

Momentary Non-lighted A3AT-90K1-00@

LED surface illumination A3AT-90K1-00E@

Alternate Non-lighted A3AT-90L1-00@

LED surface illumination A3AT-90L1-00E@

PCB

Momentary Non-lighted A3AT-91K1-00@

LED surface illumination A3AT-91K1-00E@

Alternate Non-lighted A3AT-91L1-00@

LED surface illumination A3AT-91L1-00E@

Appearance Terminal Operation Illumination Model Color symbol for

pushbutton

Minimum

packing unit

Square/A3AA

Solder

Momentary Non-lighted A3AA-90A1-00@

(Non-lighted)

R (red)

Y (yellow)

G (green)

L (light gray)

A (blue)

B (black)

D (dark gray)

H (gray)

(Surface illumination)

R (red)

Y (yellow)

G (green)

100

LED surface illumination A3AA-90A1-00E@

Alternate Non-lighted A3AA-90B1-00@

LED surface illumination A3AA-90B1-00E@

PCB

Momentary Non-lighted A3AA-91A1-00@

LED surface illumination A3AA-91A1-00E@

Alternate Non-lighted A3AA-91B1-00@

LED surface illumination A3AA-91B1-00E@

Round/A3AT

Solder

Momentary Non-lighted A3AT-90A1-00@

LED surface illumination A3AT-90A1-00E@

Alternate Non-lighted A3AT-90B1-00@

LED surface illumination A3AT-90B1-00E@

PCB

Momentary Non-lighted A3AT-91A1-00@

LED surface illumination A3AT-91A1-00E@

Alternate Non-lighted A3AT-91B1-00@

LED surface illumination A3AT-91B1-00E@

Name Shape Classification Model Minimum

packing unit

Flange

Square

@12.7

Flange alone

Black A3A-241

100

Light gray A3A-242

Round

φ12.7

Black A3A-251

Light gray A3A-252

Leaf spring A3A-200

Square

@12.7 Flange and leaf

spring

(one each)

Black A3A-211

Light gray A3A-212

Round

φ12.7

Black A3A-221

Light gray A3A-222

A3A Lighted Pushbutton Switch

Specifications

■Approved Standards

■Ratings

Note: Minimum allowable load: 5 VDC 1 mA (Resistive)

The ratings given above are for testing under the following conditions:

(1) Ambient temperature: 20 ±2°C

(2) Ambient humidity: 65 ±5%

(3) Operating frequency: 20 times/minute

LED

Note: The above built-in LEDs do not have a resistor. Connect to each of the

above built-in LEDs a resistor that satisfies the above conditions.

* Refer to the VF – IF characteristic graphs on page 8.

■Operating Characteristics

* Alternate operation models only.

■Characteristics

*1. With alternate operation models, one operation cycle consists of set and

reset operations.

*2. Indicates malfunctions of less than 1 ms.

■Contact Form

• SPST-NO • SPDT

CSA

6 A at 125 VAC 3 A at 125 VAC

2 A at 250 VAC 2 A at 30 VDC

4 A at 30 VDC

Ty p e

Item AC resistive load DC resistive load

Contact form

General load SPST-NO 6 A at 125 VAC

2 A at 250 VAC 4 A at 30 VDC

Item

Illumination Surface illumination

Red Ye l l o w Green

Forward voltage VF

Standard value (V) *

(IF = 10 mA) 2.0 2.1 2.1

Maximum value (V) 3.0

Forward current IFMaximum value (mA) 20 20 25

Permissible loss PD Maximum value (mW) 60 60 75

Reverse voltage VRMaximum value (V) 3

Operating force OF max. 2.45 N

Release force RF min. 0.15 N

To t al trave l TT Approx. 2mm

Pretravel PT max. 1.5 mm

Locktravel alternate * LTA min. 0.5 mm

Operating

frequency

Mechanical Momentary action: 120 operations/minute max.

Alternate action: 60 operations/minute max. *1

Electrical 20 operations/minute max.

Insulation resistance 100 MΩ min. (at 500 VDC)

Contact resistance 100 mΩ max. (initial value)

Dielectric

strength

Between

terminals of

same polarity

600 VAC, 50/60 Hz for 1 min

Between

each terminal

and ground

2,000 VAC, 50/60 Hz for 1 min

Vibration

resistance Malfunction 10 to 55 Hz, 1.5-mm double amplitude *2

Shock

resistance

Destruction 500 m/s2

Malfunction 150 m/s2 *2

Durability Mechanical Momentary action: 1,000,000 operations min.

Alternate action: 50,000 operations min. *1

Electrical 50,000 operations min.

Weight Approx. 3.2 g

Ambient operating

temperature −10°C to +55°C (with no icing)

Ambient operating humidity 35% to 85%

Ambient storage

temperature −25°C to +65°C (with no icing)

Degree of protection IP00

Electric shock protection

class Class II

PTI (proof tracking index) 175

Pollution degree 3 (IEC947-5-1)

Contact name Contact form Contact type

Double-break SPST-NO

Double-throw SPDT

NO NO

COM

A3A Lighted Pushbutton Switch

Nomenclature

■Model Structure

Note 1. The above is for the A3AA.

2.An A3A with solder terminals is provided with a black flange and leaf spring, however an A3A with PCB terminals is not provided with them. If a black flange

and leaf spring are required for an A3A with PCB terminals, order them from your OMRON representative. (Refer to page 2.)

1. Shape

Square

(A3AA)

3. Ratings

Standard load

6 A at 125 VAC

2 A at 250 VAC

4 A at 30 VDC

* Minimum applicable load:

1 mA at 5 VDC (resistive load)

2. Terminals

• Solder terminal

• PCB terminal

Round

(A3AT)

Diffusion sheet

(milky white)

4.Color cap

5. Color

• Non-lighted Model

Red , yellow , light gray ,

gray , dark gray ,

green , blue , black

• Surface Illumination Model

Red , yellow , green

Flange

Leaf spring

A3A Lighted Pushbutton Switch

Dimensions (Unit: mm)

Note: All units are in millimeters unless otherwise indicated.

The illustrations below show switches with solder terminals, without a flange or leaf spring.

Unless specified, there is a tolerance of ±0.4mm for dimensions.

12.7

15.2

8.9 dia.

Round push-button

Two, t0.4

terminals

@8.9

Square push-button

1.7

12.5 3.5

1.7

3.5

12.5

Three, t0.4

terminals

Non-lighted Model

Square Pushbutton

Round Pushbutton

SPST-NO SPDT

12.7

15.2

8.9 dia.

Round push-button

Two, t0.4 terminals

@8.9

Square push-button

1.7

12.5 3.5

Two, t0.3 LED terminals

1.7

3.5

12.5

Three, t0.4 terminals

Two, t0.3 LED terminals

Surface Illumination Model

Square Pushbutton

Round Pushbutton

SPST-NO SPDT

A3A Lighted Pushbutton Switch

■Terminals

Contact Solder terminal PCB terminal

SPST-NO

SPDT

0.5

0.8

0.5

0.8

23.5

1.7

0.8 × 2

3.5

1.7

10.16

4.48

NO NO

10.16

LED

terminal

Terminal for models

with an illuminating

push-button

Non-lighted Models

Terminal Hole

Dimensions Switch terminal: t0.4

Lighted Models

Switch terminal: t0.4

Lamp terminal: t0.3

3.5

0.6

1.7

3.5

0.6

1.7

Holes for models

with illuminating

push-button

10.16

4.48

(0.67)

(1.87)

Four,

1 dia.

holes

(2.52) (2.52)

㧗㧙

10.16

4.48

NO NO

10.16

LED

terminal

Terminal for models

with an illuminating

push-button

Switch terminal: t0.4

Terminal Arrangement

(BOTTOM VIEW)

Switch terminal: t0.4

Lamp terminal: t0.3

Non-lighted Models

PCB Dimensions

(BOTTOM VIEW)

Lighted Models

0.5

0.8

0.5

0.8

1.7

3.5

0.8

1.7

3.5

1.95

5.7

10.16

LED

terminal

L+

NC NO C

L-

Non-lighted Models

Terminal Hole

Dimensions

Switch terminal: t0.4

Lighted Models

Switch terminal: t0.4

Lamp terminal: t0.3

3.5

0.6

1.7

3.5

0.6

1.7

1.95

5.7

10.16

LED

terminal

L+

NC NO C

L-

(2.54) 10.16 NO

1.95

5.7

Five,

1-dia.

holes

Holes for models

with illuminating

push-button

Lighted ModelsNon-lighted Models

Switch terminal: t0.4

Terminal Arrangement

(BOTTOM VIEW)

Switch terminal: t0.4

LED terminal: t0.3

PCB Dimensions

(BOTTOM VIEW)

A3A Lighted Pushbutton Switch

■Accessories Dimensions

Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.

■Panel Cutouts

7.8

12.7 dia.

9.1 dia.

11.6

(10.1) 5.4

1.0

12.7

9.1

7.8

11.6

(10.1) 5.4

1.0

12.2

2.5

t = 0.3

Leaf Spring A3A-200 Flange (Square) A3A-24@Flange (Round) A3A-25@

Square Pushbutton For Side-by-side MountingPanel Mounting Dimensions

Round Pushbutton

11.5 dia.

+0.2

Square pushbutton Round pushbutton

Horizontal

multiple

mounting

Ver t ic al

multiple

mounting

11.5

+0.2

−0

15.3 min.

3.8 min.

11.5

+0.2

−0

11.5

+0.2

−0

+0.3

−0

12.7(n−1)+11.5

15.3 min.

+0.2

−0

12.7 min.

+0.2

−0

14.5 max.

Flange

Panel *

Leaf spring

* Recommended panel

thickness: 1 to 1.6 mm

(The diagram shows the lighted

SPST-NO model.)

+0.2

11.5

+0.2

11.5

A3A Lighted Pushbutton Switch

Precautions

●Refer to the “Push-button Switches Common Precautions” for correct use.

• Please do not perform wiring or touch

the charged parts of terminals while

power is supplied to the Switch.Doing

so may result in electric shock.

• Make sure to keep a secure insulation

distance after wiring to the Switch.

●Mounting

• When opening a hole on a panel to

mount an A3A to the panel, make sure

that the hole has no burr.

• When mounting a flange to the

switching mechanism of an A3A,

make sure that the flange and the

casing of the switching mechanism

are engaged securely.

●Wiring

• When soldering the terminals of an

A3A, refer to the following.

1. For manual soldering:

Use a soldering iron with the

terminals at a temperature of 350°C

maximum within three seconds.

2. Do not impose any external force on

the terminals for one minute after

the terminals are soldered.

• Do not pull the terminals of any A3A

with a force exceeding 5.34 N,

otherwise the joint part of the A3A may

be damaged.

• When soldering the terminals of an

A3A, apply non-corrosive rosin flux to

the terminals.

• After soldering the terminals of an

A3A, do not wash the A3A with any

solvent.

• When mounting an A3A to a PCB and

soldering the terminals of the A3A to

the PCB, make sure that the flux will

not rise above the surface of the PCB.

●Operating Environment

• When using an A3A, make sure that

dust, metal powder, or oil will not

penetrate into the interior of the A3A.

●LED

• The polarity of the LED is indicated on

the back of the Switch. Wire the LED

correctly according to the polarity.

• An A3A with a built-in LED does not

have a limiting resistor. Connect a

limiting resistor.

• The resistance can be calculated by

using the following expression.

Note: Make sure that the limiting resistor

connected to the built-in LED of an A3A

satisfies the characteristics of the built-in

LED. The mean forward current of the

built-in LED must be 8 mA minimum.

●Example

Conditions: Red LED with an IF of

–10 mA at 24 V and a Ta of 25°C.

From the red LED characteristic below,

VF will be 2 V when IF is 10 mA.

Therefore, R = (24 V – 2 V)/0.01 A =

2,200 Ω.

Thus the recommended resistance is

2.2 kΩ at 0.5 W (2* x IF2R).

Note: A factor of 2 (marked with an asterisk) is

applied because the permissible wattage of

the resistor must be twice as large as the

required wattage.

LED Characteristics

(VF – IF Characteristics)

Ta: Ambient Temperature

(Red)

(Yellow)

(Green)

●Pushbutton

• When exchanging the Pushbutton

(except the ones for the mechanical

indicator models) with a new one, pull

out the Pushbutton from the Switch,

holding the Pushbutton in the

longitudinal direction.

Do not remove the Pushbutton of the

mechanical indicator model.

●Engraving of Pushbutton

• Depth of engraving: 0.3 mm max. for

illuminating pushbutton

• Since the Pushbutton is made of

polycarbonate, use an alcohol-based

paint when marking legend.

●Pressing of Pushbutton

• Apply firm pressure to the Pushbutton

when operating it. In doing so,

however, do not apply a pressure

greater than 11.8 N.

Precautions for Correct Use

R = (Ω)

E : Applied

voltage (V)

VF: LED forward

voltage (V)

IF: LED forward

current (A)

E−VF

5.0

2.0

0.1

0.2

0.5

1.0

1.0 1.5 2.0 2.5 3.0

VF (V)

(mA) Ta = 25°C

5.0

2.0

0.1

0.2

0.5

1.0

1.0 1.5 2.0 2.5 3.0

VF (V)

(mA) Ta = 25°C

Ta = 25°C

5.0

2.0

0.1

0.2

0.5

1.0

1.0 1.5 2.0 2.5 3.0

VF (V)

(mA)

A3A Lighted Pushbutton Switch

■Installation

●Mounting and Replacing the Pushbutton

●Mounting Switch on a Panel

1. Mounting Direction for the

Pushbutton and Switch 2. Removing the Pushbutton (Non-lighted Models Only)

• Insert the catches of the Pushbutton into the

grooves of the Switch and push down on the

Pushbutton until it is fixed securely to the

Switch.

• With lighted models, the LED is built into the

Switch and cannot be replaced.

• To remove the Pushbutton, hold both the

Pushbutton and the Switch on the longer

sides and pull the Pushbutton away from the

Switch.

(If the catches on the Pushbutton are bent

outwards, it may result in malfunction.)

• When replacing the Pushbutton, if the cap is held

on the sides with catches, internal components

(e.g., plate) may come loose. Be sure to hold the

Pushbutton by the sides without catches (i.e., the

longer sides of the Switch) when removing.

Catches on the

Pushbutton

Grooves in

the Switch

LED terminals

Catch

1. Mount Leaf Spring 2. Mount Flange on Panel 3. Fit Flange with Switch 4. Removing Switch

• Press the leaf spring into the fitted

groove on the upper surface of the

Switch. For an easier fitting, first fit

one side of the leaf spring, then

press the other side into the fitting

groove.

(It will be easier mounting the leaf

spring of one side first, then mount

the other side.)

• Insert the flange from the front

surface of the panel.

• The flange has two opposing

guides to facilitate its insertion into

the panel cutout hole. Be sure the

flange does not remain tilted with

respect to the panel surface after

being installed.

• While holding the flange, insert the

opposing supports into the gaps

between the leaf spring and

Switch on the longer sides of the

housing, and fit the rectangular

hole of the flange with the

projections of the switch housing.

• Insert a small flat-bladed screwdriver

or tweezers into the flange support

exposed on the rear of the panel.

Pry up on each side to pull out the

Switch.

Note: Be sure to fit the leaf spring

exactly into the groove, and do

not allow it to slip out of the

groove.

Note: The mounting direction of the

flange determines the orientation

of the Switch.

Note: Completely remove any burrs on

the panel cutout surface;

otherwise, the flange and Switch

will not attach solidly.

Note: Do not pry up the flange support

more than necessary or the

switch holding portions may be

damaged.

Leaf spring

fitting groove

Switch

Flange

Guide

Panel

Flange

Panel

(t = 1 to 1.6 mm)

Cross Section

Support

Panel

Projection

Panel Flat-bladed

screwdriver

or tweezers

A3A Lighted Pushbutton Switch

• Application examples provided in this document are for reference only. In actual applications, confirm equipment functions and safety before using the product.

• Consult your OMRON representative before using the product under conditions which are not described in the manual or applying the product to nuclear control systems, railroad

systems, aviation systems, vehicles, combustion systems, medical equipment, amusement machines, safety equipment, and other systems or equipment that may have a serious

influence on lives and property if used improperly. Make sure that the ratings and performance characteristics of the product provide a margin of safety for the system or

equipment, and be sure to provide the system or equipment with double safety mechanisms.

OMRON Corporation

Electronic and Mechanical Components Company Contact: www.omron.com/ecb Cat. No. A025-E1-05

0812(0207)(O)

Note: Do not use this document to operate the Unit.