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B3D-5112 Datasheet(PDF) 4 Page - Omron Electronics LLC |
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B3D-5112 Datasheet(HTML) 4 Page - Omron Electronics LLC |
4 / 6 page 272 Ultra-low Profile Dome Key B3D PCB Pattern Diagrams B3D-4112 B3D-5112 Precautions ■ Attaching to the PCB Remove the Dome Key from the sheet using tweezers or a vacuum pick-up tool, and attach it above the contact on the PCB surface, which has been wiped clean in advance. Press down on the top sur- face using an elastic material, such as urethane rubber, and a force of 2.94 to 4.9 N. Place a positioning mark (circle) on the PCB for easy positioning. Make sure that the position of the Dome Key is aligned correctly before use. Significant misalignment may result in short-circuits or reduced sensitivity. Note: The recommended vacuum pick-up tool is the Hozan P-835 Vacuum Pick with an M suction pad (7-mm dia.). Do not reuse a B3D Dome Key that has been detached from the PCB. Attach a new Dome Key to the PCB. Do not touch the contact dome with bare hands, or with unclean gloves. Doing so may damage the contact dome, which is the part that comes in contact with the PCB. ■ Reflow Soldering The Dome Key cannot withstand heat from reflow soldering. Always perform reflow soldering before attaching the Dome Key to the PCB. ■ Washing Do not wash the Dome Key. The Dome Key is not water-resistant and must not be exposed to water or other liquids. ■ Common Precautions Be sure to read the precautions common to all Tactile Switches, contained in the Technical User’s Guide, “Tactile Switches, Technical Information” for correct use. |
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