Product Details Portlet

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.
RoHS Compliant
Note: This web page provides an excerpt from a datasheet. Refer to Product 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 humidity35% to 85% (at +5 to +35°C)
Contact formSPST-NO
Contact resistance
(initial value)
100 mΩ max.
Insulation resistance100 MΩ min. (at 250 VDC with insulation tester)
Dielectric strength500 VAC, 50/60 Hz for 1 min
Bounce time5 ms max.
Vibration resistanceMalfunction: 10 to 55 Hz, 1.5-mm double amplitude
Shock resistanceDestruction: 1,000 m/s2 {approx. 100G} max.
Malfunction: 100 m/s2 {approx. 10G} max.
DurabilityStandard force models (1.57 N {160 gf}): 500,000 operations min.
High-force models (2.26 N {230 gf}): 300,000 operations min.
WeightApprox. 0.3 g
Degree of protectionIEC IP67

Operating Characteristics


Operating force (OF)
B3S Series
1.57 N2.26 N
B3S-1 00B3S-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)

(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.