Product Details Portlet

B3AL Long-stroke Tactile Switch (SMT)

Long-stroke Tactile Switches with High Operating Forces and Long Life.

  • High operating force also providing long life.
    (Reference values: OF = 5 N {510 gf}, Durability =
    500,000 operations)
  • Long stroke achieved by using a rubber plunger.
Model 2D/3D CAD
B3AL Download
B3AL-1000P Download
B3AL-1001P Download
B3AL-1002P Download
B3AL-1003P Download
B3SL-100□P Download
B3SL-102□P Download
B3W-100□ Download
B3W-105□ Download
B3W-110□ Download
B3W-115□ Download
B3W-400□ Download
B3W-405□ Download
B3W-410□ Download
B3W-415□ Download
List of Models / Operating Characteristics
Model B3AL-1000P B3AL-1001P B3AL-1002P B3AL-1003P B3AL-1004P
Color of pushbutton Red green black White
Operating force(OF) 1.96±0.59 N {200±60 gf} 2.45±0.69 N {250±70 gf} 3.00±0.90 N {306±92 gf} 3.50±1.05 N {357±107 gf} 5.00±1.50 N
{510±153 gf}
Releasing force(RF) 0.24 N {24 gf} min. 0.49 N {50 gf} min. 0.60 N {61 gf} min. 0.70 N {71 gf} min. 1.00 N {102 gf} min.
Pretravel(PT) 1.3+0.2/-0.3mm
Minimum packing unit 1,400pcs
Note: Order in multiple of the minimum order unit.
Rating (resistive load) 1 to 50 mA at 5 to 16 VDC (resistive load)
Ambient operating temperature -40°C to +90°C at 60%RH max. (with no icing or condensation)
Ambient operating humidity 35% to 85% (at 5 to 35 °C)
Contact configuration SPST-NO
Contact resistance 100 mΩ max.
Insulation resistance 100 MΩ min. (at 500 VDC with insulation tester)
Dielectric strength 250 VAC, 50/60 Hz for 1 min
Bounce time 5 ms max. (The center of the plunger is pressed at a speed of 3 or 4 times per second.)
Vibration resistance Malfunction: 10 to 55 Hz, 1.5-mm double amplitude
Shock resistance Destruction: 1,000 m/s2 max.
Malfunction: 100 m/s2 max.
Durability B3AL-1000P : 1,000,000 operations min.
B3AL-1001P : 1,000,000 operations min.
B3AL-1002P : 1,000,000 operations min.
B3AL-1003P : 1,000,000 operations min.
B3AL-1004P : 500,000 operations min.
Weight Approx. 0.18 g
(Unit: mm)
Note: . Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions. No terminal numbers are indicated on the Switches.

Precautions for Correct Use


Do not exceed the following terminal temperature profile during soldering in a reflow oven.


The Switches are not sealed, and cannot be washed.
Doing so will cause the washing agent, together with flux or dust particles on the PCB, to enter the Switch, resulting in malfunction.

●Packaging Specifications

The packaging specifications for B3AL Switches in embossed taping are given below.


·Do not repeatedly operate the Switch with excessive force. Applying excessive pressure or applying additional force after the plunger has stopped may deform the disk spring of the Switch, resulting in malfunction.
·Be sure to set up the Switch so that the plunger will operate in a 260℃ straight vertical line.
If the plunger is pressed of-center or from an angle it may cause deformation or damage to some parts.
·We recommend using a round bar with a diameter of at least 3 mm as the actuator.

●Dust Countermeasures

Do not mount or use the Switch in areas that are subject to dust. If dust is unavoidable, protect the Switch with a sheet or other countermeasure.

●Water and Drip Resistance

The switch is not water or drip resistant. Do not use it in locations subject to water.