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B3DA Datasheet(PDF) 1 Page - Omron Electronics LLC |
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B3DA Datasheet(HTML) 1 Page - Omron Electronics LLC |
1 / 6 page Ultra-low Profile Dome Array B3DA 273 Ultra-low Profile Dome Array B3DA Ultra-low Profile Dome Array With Dust-Proof Construction and Crisp Clicking Action • No soldering required. Attach directly to PCB to make an ultra-low profile tactile switch. • Matrix adhesive used to create highly dust-proof construction with good ventilation. Omron's unique circular contact action ensures a high level of resistance to foreign matter. • Lower profile, lighter weight, and crisp clicking action. • Customization of Dome Array available upon request (i.e., silver plating, number of contacts, shape, etc.). • RoHS Compliant. Ordering Information Note: Representative versions for engineering evaluation. Specifications Note: Contact dome specifications not shown in this table are also available. Consult Omron for customization requirements. ■ Recommended Contact Form on PCB 4-mm Diameter Contact Dome 5-mm Diameter Contact Dome Item Model (see note) 4 mm dome array B3DA-0010-A 5 mm dome array B3DA-0000-A Item Model B3DA-0010-A and custom 4 mm dia. versions B3DA-0000-A and custom 5 mm dia. versions Diameter of contact dome 4-mm dia. 5-mm dia. Operating force (OF) approx. 160 ± 50 gf (1.57± 0.49 N) Releasing force (RF) 20 gf min. (0.2 N min.) Pretravel (PT) 0.2 ± 0.1 mm Height 0.25 ± 0.1 mm Life expectancy 500,000 operations min. 1,000,000 operations min. Switching capacity 10 mA at 12 VDC (resistive) Minimum permissible load 1 mA at 3 VDC (resistive) Ambient operating temperature -40 to 80 °C (at 60% RH max.) with no icing or condensation. Ambient storage humidity 10% to 90% (at 40 °C max.) Contact - base material Stainless steel Plating Unplated. (Silver plating available for custom models.) Resist (30 to 50 µm) 2.8 dia. 1.8 dia. 5.2 dia. Gold-plated nickel Resist (30 to 50 µm) 3.8 dia. 2.3 dia. 6.2 dia. Gold-plated nickel 2.0 1.2 0.4 2.8 dia. 1.8 dia. 5.2 dia. Gold-plated nickel 2.0 1.2 0.4 3.8 dia. 2.3 dia. 6.2 dia. Gold-plated nickel Single-side PCB Multilayer PCB Single-side PCB Multilayer PCB |
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