Product Details Portlet

D2A Ultra Subminiature Detection Switch

Ultra Subminiature Detection Switch with Slide Mechanism and Pushbutton Actuator

  • Compact, light weight, and 3 mm long stroke.
  • Built-in slide mechanism allows selection of shorting or non-shorting switching timing of the switch.
RoHS Compliant
Model 2D/3D CAD ECAD(Download symbol,FootPrint,3DCAD)
* External site (Ultra Librarian) opens in a new window.
D2A-1110 Download Download
D2A-1120 Download Download
D2A-2110 Download Download
D2A-2120 Download Download
(*) Ultra Librarian uniquely created ECAD data based on the information provided by OMRON. Please note that OMRON does not guarantee the accuracy, concurrence or completeness of ECAD data.
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.
OF 0.98 N {100 gf}
OF 0.49 N {50 gf}
Non-shorting Model
Shorting Model
Non-shorting Model
Shorting Model
Pin plunger
D2A-1110 D2A-2110 D2A-1120 D2A-2120
Contact Form
D2A:Ordering Information2
Electrical ratings 0.1 A at 30 VDC (resistive load)
Note: The ratings values apply the following test conditions:
Ambient temperature: 20 ± 2ºC
Ambient humidity: 65 ± 5%
Operating frequency: 30 operations/min

Permissible operating speed 1mm to 500 mm/s
operating frequency
Mechanical 200 operations/min max.
Electrical 30 operations/min max.
Insulation resistance 100 MΩ min. (at 250 VDC with insulation tester)
Contact resistance (initial value) 50 mΩ max.
Dielectric strength Between terminals of the
same polarity
250 VAC 50/60 Hz 1 min
Between current-carrying
metal parts and ground
250 VAC 50/60 Hz 1 min
Vibration resistance
Malfunction between 10 to 55 Hz, 1.5 mm-double amplitude
Shock resistance Destruction 1,000 m/s2 {approx. 100G} max.
Malfunction *1 300 m/s2 {approx. 30G} max.
Durability * 2 50,000 operations min.(30 operations/min)
Degree of protection IEC IP00
Ambient operating temperature -10°C to +80°C (at ambient humidity 60% max.)
(with no icing or condensation)
Ambient operating humidity 85% max. (for +5°C to +35°C)
Weight Approx. 0.3 g
Note: The data given above are initial values.
  * 1. The values are at Free Position and Total Travel Position. Close or open circuit of contact is 1ms max.
  * 2. For testing conditions, consult your OMRON sales representative.
Unless otherwise specified, a tolerance of ± 0.4 mm applies to all dimensions.
The operating characteristics are for operation in the A direction ( ).

D2A:Dimensions1 D2A:Dimensions2D3C:Dimensions2
Non-shorting Models
Shorting Models
OF max.
RF min.
0.98 N {100 gf}
0.15 N {15 gf}
0.49 N {50 gf}
0.05 N {5 gf}
0.98 N {100 gf}
0.15 N {15 gf}
0.49 N {50 gf}
0.05 N {5 gf}
FP max
9.5 mm
8.1± 0.3 mm
7.4± 0.3 mm
6.5± 0.2 mm
9.5 mm
8.0± 0.3 mm
7.5± 0.3 mm
6.5± 0.2 mm



For soldering time, we recommend to solder within 3 seconds at a soldering iron temperature of less than 350°C. When soldering exceeds this temperature and time, or repeated soldering will degrade the Switch characteristics. Make sure that flux and liquid surface of the solder do not flow over the edge of the board when soldering. Please complete soldering at a temperature of 260°C within 5 seconds. It is also recommended that you apply flux guard to the mounting surface of the Switch.

Correct Use


Use M2 mounting screw with plane washers or spring washers to mount the Switch. Tighten the screws to a torque of 4.9 to 9.8×10-2N m {0.5 to 1kgf cm}.

●Application of Operation Force to the Actuator

Do not apply operation forces other than in the operating direction of the lever as shown in the following figure. It may damage the Switch or cause malfunction.

●Mounting Plate

Use materials other than ABS or polycarbonate for the mounting plate. Since grease is used for the Switch, cracks may be caused if grease from the Switch comes in contact with such materials.

●Using Micro Loads

It is recommended to use the Switch in the operation range shown below. However, even when using micro load models within the following operating range, if inrush current occurs when the contact is opened or closed, it may increase the contact wear and so decrease durability. Therefore, insert a contact protection circuit where necessary. The minimum applicable load is the N-level reference value. This value indicates the malfunction reference level for the reliability level of 60% (λ60).
(JIS C5003)
The equation, λ60=0.5×10-6/operation, indicates that the estimated malfunction rate is less than 1/ 2,000,000 operations with a reliability level of 60%.