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適合
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List of Models
Operation
type
Contact
material
HeightOperating
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
Series:

Top-actuated

Silver
plated
1.6 mm1.5 N
{153 gf}
BlackWithout
boss
B3U-1000PB3U-1100P3,500B3U-1000PMB3U-1100PM1,000
With bossB3U-1000P-BB3U-1100P-BB3U-1000PM-BB3U-1100PM-B

B3U-3000
Series:

Side-actuated

3.2 mm1.59 N
{162 gf}
Without
boss
B3U-3000PB3U-3100P4,000B3U-3000PMB3U-3100PM1,000
With bossB3U-3000P-BB3U-3100P-BB3U-3000PM-BB3U-3100PM-B
Note: Orders must be made in multiples of the order unit specified above.
Ratings/Characteristics
ItemOperation
type
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 humidity35% to 85% (at +5 to +35ºC)
Contact configurationSPST-NO
Contact resistance (initial value)100 mΩ max.
Insulation resistance100 MΩ min. (at 100 VDC with insulation tester)
Dielectric strength250 VAC, 50/60 Hz for 1 min
Bounce time5 ms max.
Vibration resistance10 to 55 Hz, 1.5 mm double amplitude
Shock resistance1,000 m/s2 max.
Durability200,000 operations min.100,000 operations min.
WeightApprox. 0.022 g
Degree of protectionIEC IP40
WashingNot possible

Operating Characteristics
Operation type
Item
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)

0.15+0.2mm
-0.1

0.2+0.2mm
-0.1
Dimensions
(Unit: mm)
Top-actuated Models
Without Ground Terminal, without Boss
B3U-1000P(M)
B3U:Dimensions1

 
With Ground Terminal, without Boss
B3U-1100P(M)
B3U:Dimensions2


Without Ground Terminal, with Boss
B3U-1000P(M)-B
B3FS:Dimensions3

 
With Ground Terminal, with Boss
B3U-1100P(M)-B
B3U:Dimensions2
Note: Unless otherwise specified, a tolerance of ± 0.2 mm applies to all dimensions. No terminal numbers are indicated on the Switches.

Side-actuated Models
Without Ground Terminal, without Boss
B3U-3000P(M)
B3FS:Dimensions3


With Ground Terminal, without Boss
B3U-3100P(M)
B3FS:Dimensions3


Without Ground Terminal, with Boss
B3U-3000P(M)-B
B3FS:Dimensions3


With Ground Terminal, with Boss
B3U-3100P(M)-B
B3FS:Dimensions3
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.

Model2D/3D CAD
 B3U-1000P□Download
 B3U-1000P□-BDownload
 B3U-1100P□Download
 B3U-1100P□-BDownload
 B3U-3000P□Download
 B3U-3000P□-BDownload
 B3U-3100P□Download
 B3U-3100P□-BDownload