Ultra-small Tactile Switch
B3U
Ultra-small-sized Tactile Switch with High
Contact Reliability: 1.2 x 3 x 2.5 mm (H x W x D)
• Industry’s smallest switch* allows high-density mounting on
PCBs for mobile equipment.
*As of October 2006 (according to OMRON survey).
• Dust-proof construction provides high reliability in dusty
environments.
• Surface mounted: Ideal for high-density mounting.
• Models with ground terminals are available for protection
against static electricity.
• RoHS Compliant
Ordering Information
Model
Type
Top-actuated
Side-actuated
Quantity per reel Locating pin
3,500 pieces
4,000 pieces
Without boss
With boss
Without boss
With boss
Without ground terminal
B3U-1000P
B3U-1000P-B
B3U-3000P
B3U-3000P-B
With ground terminal
B3U-1100P
B3U-1100P-B
B3U-3100P
B3U-3100P-B
Note: 1.
Order in multiples of the quantities given for each package
2.
Replace “P” in the part number with “PM” to order versions with 1,000 pieces per reel. Example: B3U-3100PM-B
Specifications
■
Characteristics
Item
Contact form
Switching capacity
Contact resistance
Insulation resistance
Dielectric strength
Bounce time
Vibration resistance
Shock resistance
Life expectancy
Ambient operating temperature
Ambient operating humidity
Weight
Note:
Data shown are of initial value
SPST-NO
1 to 50 mA, 5 to 12 VDC (resistive load)
100 mΩ max. (rated: 1 mA, 5 VDC)
100 MΩ min. (at 100 VDC)
250 VAC, 50/60 Hz for 1 min
5 ms max.
10 to 55 Hz, 1.5 mm double amplitude
1,000 m/s
2
max.
200,000 operations min.
35% to 85% (at 5 to 35°C)
Approx. 0.022 g
100,000 operations min.
–25 to 70°C, (at 60% RH max.) with no icing or condensation
Top-actuated
(B3U-1000 Series)
Side-actuated
(B3U-3000 Series)
■
Operating Characteristics
Characteristics
Operating force (OF)
Releasing force (RF) min.
Pretravel (PT)
153 ± 50 gf
20.3 gf
0.15
+0.2
mm
– 0.1
0.2
+0.2
mm
– 0.1
Top-actuated
(B3U-1000 Series)
162 ± 50 gf
Side-actuated
(B3U-3000 Series)
Ultra-small Tactile Switch
B3U
243
OMRON [ OMRON ELECTRONICS LLC ]
