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Tactile Switches(SMD Types)

B3S Sealed Tactile Switch (SMT)

Surface-mounting Switches with a Sealed Structure for High Reliability. Available on Embossed Tape

  • Sealed construction conforming to IP67
    (IEC- 60529) provides high contact reliability in locations
    exposed to dust or water. (* Excluding the terminal section.)
  • Surface-mounting terminals for high-density mounting.
  • Ground terminal available to protect against static electricity.
  • Available in embossed taping packages for automatic mounting.

Updated Aug. 31, 2012

This web page provides an excerpt from a datasheet. Refer to Datasheet and other applicable documents for more information.

List of Models
6 × 6 mm Models

Operation type  Contact material  Height  Operating force (OF)  Plunger color  Without ground terminal  With ground terminal 
Bags  Embossed taping  Bags  Embossed taping 
Model  Minimum packing unit  Model  Minimum packing unit  Model  Minimum packing unit  Model  Minimum packing unit 
B3S-1000 Series  Silver plated  4.3 mm  1.57 N
{160 gf} max. 
Ivory  B3S-1000  100 pcs  B3S-1000P  1,000 pcs  B3S-1100  100 pcs  B3S-1100P  1,000 pcs 
2.26 N 
{230 gf} max.
Yellow  B3S-1002  B3S-1002P  B3S-1102  B3S-1102P 
Note: Switches in bags must be ordered in units of 100 Switches, and Switches on embossed taping must be ordered in units of 1,000 Switches.
Rating (resistive load) 1 to 50 mA, 3 to 24 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 operating humidity 35% to 85% (at +5 to +35°C)
Contact form SPST-NO
Contact resistance
(initial value)
100 mΩ max.
Insulation resistance 100 MΩ min. (at 250 VDC with insulation tester)
Dielectric strength 500 VAC, 50/60 Hz for 1 min
Bounce time 5 ms max.
Vibration resistance Malfunction: 10 to 55 Hz, 1.5-mm double amplitude
Shock resistance Destruction: 1,000 m/s2 {approx. 100G} max.
Malfunction: 100 m/s2 {approx. 10G} max.
Durability Standard force models (1.57 N {160 gf}): 500,000 operations min.
High-force models (2.26 N {230 gf}): 300,000 operations min.
Weight Approx. 0.3 g
Degree of protection IEC IP67
Washing Possible

Operating Characteristics
  Operating force (OF)
Item Model
B3S Series
1.57 N 2.26 N
B3S-1 00 B3S-1 02
Operating force (OF) 1.57 N {160 gf} max. 2.26 N {230 gf} max.
Releasing force (RF) 0.2 N {20 gf} min. 0.49 N {50 gf} min.
Pretravel (PT)
  0.25 +0.2 mm
(Unit: mm)
Note: . The numbers used for terminals in the following graphics are indicated in the “Bottom View” diagram below. In this diagram, the Switch is rotated so that the terminals are on the right and left-hand sides, and the OMRON logo appears the right way up.
Without Ground Terminal

With Ground Terminal
Note: Unless otherwise specified, a tolerance of ± 0.4 mm applies to all dimensions. No terminal numbers are indicated on the Switches.


Be sure to read the safety precautions common to all Tactile Switches for correct use.

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