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Ultra-small Tactile Switch (SMT)
Ultra-small-sized Tactile Switch with
High Contact Reliability:
1.2 × 3 × 2.5 mm (H × W × D)
? Compact switch allows high-density mounting on
PCBs for mobile equipment.
? 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
B3U
■
List of Models
Embossed taping (standard quantity)
Embossed taping (small quantity)
Without
With ground
Quantity per
Without
With ground
Quantity
Operation
type
Locating pin
Plunger
color
ground
terminal
terminal
reel
ground
terminal
terminal
Top-actuated
Without boss
Black
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
Side-
Without boss
B3U-3000P
B3U-3100P
4,000
B3U-3000PM
B3U-3100PM
1,000
actuated
With boss
B3U-3000P-B
B3U-3100P-B
B3U-3000PM-B B3U-3100PM-B
Note:
Orders must be made in multiples of the order unit specified above.
■
Ratings/Characteristics
■
Operating Characteristics
Item
Operation
type
Top-actuated
(B3U-1000 Series)
Side-actuated
(B3U-3000 Series)
Item
Operation type
Top-actuated
(B3U-1000 Series)
Side-actuated
(B3U-3000 Series)
Ratings
Ambient operating
temperature
Ambient operating
humidity
1 to 50 mA, 5 to 12 VDC (resistive load)
-25 ° C to +70 ° C at 60%RH max. (with no icing or
condensation)
35% to 85% (at +5 to +35 ° C)
Operating force (OF)
Releasing force (RF)
Pretravel (PT)
1.50 ± 0.49 N
{153 ± 50 gf}
0.2 N min. {20 gf}
? 0.1
0.15 + 0.2 mm
1.59 ± 0.49 N
{162 ± 50 gf}
? 0.1
0.2 + 0.2 mm
Contact form
Contact
resistance
Insulation
resistance
SPST-NO
100 m Ω max. (initial value) (rated: 1 mA, 5 VDC)
100 M Ω min. (at 100 VDC)
Dielectric strength 250 VAC, 50/60 Hz for 1 min
Bounce time
Vibration
resistance
Shock resistance
5 ms max.
10 to 55 Hz, 1.5 mm double amplitude
1,000 m/s 2 max.
Durability
Maximum
operating force
Weight
200,000 operations min.
30 N max.
Approx. 0.022 g
100,000 operations min.
1
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