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Technical content

Ultra-small, Low-cost, Push-operated Switches

  • All-in-one design means fewer parts are required. This product delivers high reliability at a low cost.  Uses long-lasting resin springs to achieve a long mechanical durability expectancy of 30,000 operations.  Models with stoppers for restricting the setting range are available.  The series includes a complete range of pen-push models that prevent accidental operation.

Ordering Information

Switches (Single Switch Units) Note: 1. The classification diagrams show 4 Switch Units combined with End Caps to create 4-digit displays. 2. The model numbers given above are for 1 Switch Unit. 3. Models with stoppers are also available. Add “-S@@” after the “106” or “206” in the model number and specify the display range in the @@. For example, to specify the range 0 to 6, add “-S06” to the model number (e.g., A7D-106-S06-1). Accessories (Order Separately) Use accessories, such as End Caps and Spacers, with the Switch Units. Note: The @ in the Spacer model number stands for a letter in the range A to U. (Refer to the table in the following explanation about Spa cers.) End Caps End Caps are used on the Switch Units at each end and allow all the Switch Units to be securely mounted to a panel. They come in pairs, one for the left and one for the right. Spacers

  • Spacers are used for creating extra space or gaps between the Switch Units and have the same dimensions as the Switch Units themselves.
  • There are also Spacers with engraved characters or symbols that can be used for indicating units, such as time and length. (Refer to the following table.) Consult your OMRON representative for details. Model A7D A7DP Classification (See note 1.) Screw mounting (back mounting) Snap-in (front mounting) Snap-in (front mounting) Output code number Terminals PCB terminals Color Light gray Black Light gray Black Light gray Black 06 (binary coded decimal) A7D-106 A7D-106-1 A7D-206 A7 D-206-1 A7DP-206 A7DP-206-1 Classification Screw mounting (back mounting) Snap-in (front mounting) Accessory Color Light gray Black Light gray Black End Caps (1 pair) A7D-1M A7D-1M-1 A7D-2M A7D-2M-1 Spacer A7D-1P@ (See note.) A7D-1P@-1 (See note.) A7D-2P@ (See note.) A7D-2P@-1 (See note.) Symbol A B C D E F G Stamp No desig- nation SEC MIN H g kg mm Symbol H J K L Q T U Stamp cm m °CP C S x 10 SEC 0

Dimensions (Unit: mm) Switches Switching capacity (resistive load) 3.3 to 30 VDC 1 mA to 0.1 A Continuous carry current 100 mA Contact resistance 200 mΩ max. Insulation resistance Between non-connected terminals 10 MΩ min. (at 250 VDC) Between terminal and non-current carrying part 100 MΩ min. (at 500 VDC) Dielectric strength Between non-connected terminals 250 VAC, 50/60 Hz for 1 min Between terminal and non-current carrying part 1,000 VAC, 50/60 Hz for 1 min Vibration resistance 10 to 55 Hz, 1.5-mm double amplitude Shock resistance 500 m/s2 min. Durability Mechanical 30,000 operations min. Electrical 20,000 operations min. Ambient temperature Operating: –10 °C to 70°C (with no icing) Storage: –20 °C to 80°C Ambient humidity Operating: 45% to 85% Max. operating force 3.43 N max. C 1.5 1.5 1.85 (2.2)P=5.08±0.3 16 14 ±0.1 2.8 5.08±0.1 A C B 0.8 1.4 PCB terminal 1.92 P=2.54 14±0.1510 2.2 4.2 2 1.51.6 3.7 D+0.3 B 14.2+0.4 Panel thickness: 2 Two, M2.6 or 2.8 mm holes Note: 1. The dimensions above include both End Caps, and will increase 5.08 mm for each Spacer inserted. 2. Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions. The tolerance for multiple connection is ±(number of units x 0.4) mm. Number of Switches (n) Size A (n x 5.1 + 3) Size B (n x 5.1 + 8.3) Size C (n x 5.1 + 13.3) Size D 1 8.1 13.4 18.4 8.4 2 13.2 18.5 23.5 13.5 3 18.3 23.6 28.6 18.6 4 23.4 28.7 33.7 23.7 5 28.5 33.8 38.8 28.8 6 33.5 38.9 43.9 33.9 7 38.6 44.0 49.0 39.0 8 43.7 49.1 54.1 44.1 9 48.8 54.2 59.2 49.2 10 53.9 59.3 64.3 54.3 A7D-106(-1) PCB Terminals Note: Common terminal C is at the bottom when the Switch Unit is viewed from the front. Panel Cutout C 1.5 5.08±0.1(2.5) 16 10 2.2 1.92 0.8 1.4 P=2.54 14±0.15 14.2+0.4 3.7 17.5 1.5 1.5 3.7 A (1.5) (2.2)P=5.08±0.3 B C+0.3 Panel thickness: 1 to 2 PCB ter minal Note: 1. The dimensions above include both End Caps, and will increase 5.08 mm for each Spacer inserted. 2. Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions. The tolerance for multiple connection is ±(number of units x 0.4) mm. Number of Switches (n) Size A (n x 5.1 + 5) Size B (n x 5.1 + 3) Size C (n x 5.1 + 3.9) 11 0 . 18 . 19 2 15.2 13.2 14.1 3 20.3 18.3 19.2 4 25.4 23.4 24.3 5 30.5 28.5 29.4 6 35.5 33.5 34.5 7 40.6 38.6 39.6 8 45.7 43.7 44.7 9 50.8 48.8 49.8 10 55.9 53.9 54.9 A7D-206(-1) PCB Terminals Note: Common terminal C is at the bottom when the Switch Unit is viewed from the front. Panel Cutout

Accessories (Order Separately) Note: Unless otherwise indicated, dimensional toleranc es for dimensions in the models above are ± 0.4 mm. Output Codes Note: The solid dot ● indicates that the internal switch is ON (i.e., connected to the common terminal). Output code number 06 (Binary Code) Internal circuit Dial display Terminal C 1 2 4 8 1 ● 2 ● 3 ●● 4 ● 5 ●● 6 ●● 7 ●●● 8 ● 9 ●● C 5.08±0.1(2.5) 16 10 2.2 1.92 0.8 1.4 P= 2.54 14±0.15 1.9 17.5 1.5 1.5 3.7 A (1.5) (2.2)P= 5.08±0.3 B C 14.2+0.4 Panel thickness: 1 to 2 PCB terminal Note: 1. The dimensions above include both End Caps, and will increase 5.08 mm for each Spacer inserted. 2. Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions. The tolerance for multiple connection is ±(number of units x 0.4) mm. Number of Switches (n) Size A (n x 5.1 + 5) Size B (n x 5.1 + 3) Size C (n x 5.1 + 3.9) 11 0 . 18 . 19 2 15.2 13.2 14.1 3 20.3 18.3 19.2 4 25.4 23.4 24.3 5 30.5 28.5 29.4 6 35.5 33.5 34.5 7 40.6 38.6 39.6 8 45.7 43.7 44.7 9 50.8 48.8 49.8 10 55.9 53.9 54.9 A7DP-206(-1) PCB Terminals, Pen-push Model Note: Common terminal C is at the bottom when the Switch Unit is viewed from the front. Panel Cutout 14 1.5 1.5 0.8 1.5 0.81.4 1.5 0.7 0.8 6.5 6.5 15.5 1.5 15.5 1.5 End Caps for Push-operated Switches A7D-1M(-1) Screw Mounting (Back Mounting) Left Side Right Side 1.555 2.5 1.4 2.5 2.6 0.7 0.70.8 1.5 1.52.6 3.3 16 1617.5 17.5 1.5 1.5 16 16 End Caps for Push-operated Switches A7D-2M(-1) Snap-in Mounting (Front Mounting) Left Side Right Side 1.4 0.8 17.5 5.08±0.1 1.62 14±0.15 16 Spacers for Push-operated Switches A7D-1P@(-1) Screw Mounting (Back Mounting) Note: The @ in the Spacer model number stands for a letter in the range A to U. (Refer to the table under the explanation about Spacers on page 1.) 1.4 0.8 17.5 5.08±0.1 1.5 14±0.15 16 Spacers for Push-operated Switches A7D-2P@(-1) Snap-in Mounting (Front Mounting) Note: The @ in the Spacer model number stands for a letter in the range A to U. (Refer to the table under the explanation about Spacers on page 1.)

Place orders as shown in the example below, specifying the model and number. 1. A7D-2M (End Caps): 1 pair 2. A7D-206-S @@ (Switch Unit with stopper): 1 piece 3. A7D-206 (Switch Unit): 1 piece 4. A7D-2P @ (Spacer): 1 piece 5. A7D-206 (Switch Unit): 2 pieces Note: Standard products, such as the Switch Units and End Caps, are not factory-assembled for shipment. Contact your OMRON representative for details on ordering factory-assembled sets. Safety Precautions Refer to Safety Precautions for All Thumbwheel Switches. Handling

  • The molded components of the Switch use polyacetal resin and PBT resin. It is recommended that alcohol is used to wipe off dirt and smudges from the molded components. Take care to prevent the alcohol from getting inside.
  • Do not use thinner or other solutions which might damage the resin.
  • Terminals can withstand a force of 4.9 N for 10 seconds or more (the mating strength of the case and seal), and survive bending of 20° without breaking after returning to original position. Do not use excessive force or apply repetitive external force, however, when handling terminals. In particular, take care to avoid dropping them as the terminals might bend or break.
  • The setting buttons can withstand 19.6 N for 1 minute, but do not push the (+) and (-) buttons at the same time. Soldering
  • Using a Soldering Iron Use a 30-W soldering iron at a temperature of 350°C for a maximum of 3 seconds, and flush as described above. Do not apply force to the terminals during soldering and for 3 minutes after soldering is completed. Doing so may result in conduction or operation failure. Ensure that soldering flux and alcohol do not penetrate into the Switch interior Setting Numbers Pen-push Type Press the center of the setting switch with the tip of a ball-point pen. Do not use pencil point or mechanical pencil point to press the setting switch, otherwise the lead of the pencil or mechanical pencil may be broken and A7DP malfunctions may result due to fragments of the broken lead. Screw-mounting Models Tighten mounting screws to a torque between 0.2 to 0.24 N·m, using M2.6 screws. Use plain washers or spring washers together with the screws. 11 423 5 Precautions for Correct Use

Terms and Conditions Agreement Read and understand this catalog. Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments. Warranties. (a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron disclaims all other warranties, express or implied. (b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty, repair, indemnity or any other claims or expenses regarding the Products unless Omron’s analysis confirms that the Products were properly handled, stored, installed and maintained and not subject to contamination, abuse, misuse or inappropriate modification. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice, recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above warranty. See http://www.omron.com/global/ or contact your Omron representative for published information. Limitation on Liability; Etc. OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY. Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted. Suitability of Use. Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine, system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases. NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM. Programmable Products. Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence thereof. Performance Data. Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability. Change in Specifications. Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our practice to change part numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at any time to confirm actual specifications of purchased Product. Errors and Omissions. Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical or proofreading errors or omissions. 2014.9 In the interest of product improvement, specifications are subject to change without notice. OMRON Corporation Industrial Automation Company http://www.ia.omron.com/ (c)Copyright OMRON Corporation 2014 All Right Reserved.