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Product Details Portlet
B3U Ultra-small Tactile Switch (SMT)
Ultra-small Surface-mounting Tactile Switches with High Contact Reliability: 1.2 × 3 × 2.5 mm (H × W × D)
- Smallest class in the industry for high-density mounting of compact devices.
- Surface mounted: Ideal for high-density mounting.
- Models with ground terminals are available for protection against static electricity.
- Available on embossed tape: Ideal for automatic mounting.
RoHS Compliant
Datasheet
Note: This web page provides an excerpt from a datasheet. Refer to Product Datasheet and other applicable documents for more information.
List of Models
Note: Orders must be made in multiples of the order unit specified above.
| Operation type | Contact material | Height | Operating force (OF) | Plunger color | Locating pin | Embossed taping (standard quantity) | Embossed taping (small quantity) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Without ground terminal | With ground terminal | Minimum packing unit | Without ground terminal | With ground terminal | Minimum packing unit | ||||||
B3U-1000 Top-actuated | Silver plated | 1.6 mm | 1.5 N {153 gf} | Black | Without boss | B3U-1000P | B3U-1100P | 3,500 | B3U-1000PM | B3U-1100PM | 1,000 |
| With boss | B3U-1000P-B | B3U-1100P-B | B3U-1000PM-B | B3U-1100PM-B | |||||||
B3U-3000 Side-actuated | 3.2 mm | 1.59 N {162 gf} | Without boss | B3U-3000P | B3U-3100P | 4,000 | B3U-3000PM | B3U-3100PM | 1,000 | ||
| With boss | B3U-3000P-B | B3U-3100P-B | B3U-3000PM-B | B3U-3100PM-B | |||||||
Ratings/Characteristics
Operating Characteristics
| Top-actuated (B3U-1000 Series) | Side-actuated (B3U-3000 Series) | ||
|---|---|---|---|---|
| Rating (resistive load) | 1 to 50 mA, 3 to 12 VDC | |||
| Minimum applicable load (reference value) | 10 μA at 1 VDC (resistive load) | |||
| Ambient operating temperature | -25°C to +70°C at 60%RH max. (with no icing or condensation) | |||
| Ambient humidity | 35% to 85% (at +5 to +35ºC) | |||
| Contact configuration | SPST-NO | |||
| Contact resistance (initial value) | 100 mΩ max. | |||
| Insulation resistance | 100 MΩ min. (at 100 VDC with insulation tester) | |||
| Dielectric strength | 250 VAC, 50/60 Hz for 1 min | |||
| Bounce time | 5 ms max. | |||
| Vibration resistance | 10 to 55 Hz, 1.5 mm double amplitude | |||
| Shock resistance | 1,000 m/s2 max. | |||
| Durability | 200,000 operations min. | 100,000 operations min. | ||
| Weight | Approx. 0.022 g | |||
| Degree of protection | IEC IP40 | |||
| Washing | Not possible | |||
Operating Characteristics
| Top-actuated (B3U-1000 Series) | Side-actuated (B3U-3000 Series) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Operating force (OF) | 1.50 ± 0.49 N {153 ± 50 gf} | 1.59 ± 0.49 N {162 ± 50 gf} | ||||||||||
| Releasing force (RF) | 0.2 N min. {20 gf} | |||||||||||
| Pretravel (PT) |
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Note: Unless otherwise specified, a tolerance of ± 0.2 mm applies to all dimensions. No terminal numbers are indicated on the Switches. | ||||
Precautions
Be sure to read the precautions common to all Tactile Switches on pages for correct use.
