1
B3SN
Sealed Tactile Switch (SMT)
Sealed Surface-mounting Switches
Sealed Structure for High Reliability.
Available on Embossed Tape
• Sealed construction conforming to IP67 (IEC-
60529) provides high reliability in locations
exposed to dust or water. (* Excluding the termi-
nal section.)
• Available with ground terminals for protection
against static electricity.
• Use of a stainless-steel spring provides a crisp
clicking action.
• Gold plated version enables stable contact and
insulation over long periods of time.
• Available in embossed taping packages for auto-
matic mounting.
■ List of Models
6 × 6 mm Models
Note: Switches in bags must be ordered in units of 100 pieces, and Switches on embossed taping must be ordered in units of 3,000 piec-
es. Individual Switches are not sold individually.
■
Ratings/Characteristics
■ Operating Characteristics
RoHS Compliant
Without ground terminal With ground terminal
Bags Embossed taping Bags Embossed taping
Operation type
Contact
material
Height
Operating
force (OF)
Plunger
color
Model Minimum
packing
unit
Model Minimum
packing
unit
Model Minimum
packing
unit
Model Minimum
packing
unit
B3SN-3000
Series
Silver
plated
3.1 mm 1.57 N
{160 gf}
Ivory B3SN-
3012
100 pcs B3SN-
3012P
3,000 pcs B3SN-
3112
100 pcs B3SN-
3112P
3,000 pcs
B3SN-G Series
Gold-plated
Gold
plated
1.76 N
{180 gf}
Black
--- ---
B3SN-
3012P-G
--- --- --- ---
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 250 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/s
2
{approx. 100G} max.
Durabulity 100,000 operations min.
Weight Approx. 0.2 g
Degree of protection IEC IP67
Washing Possible
Item Type B3SN-3000 Series B3SN-G Series
Operating force (OF) 1.57±0.49 N {160±50 gf} max. 1.76±0.59 N {180±60 gf} max.
Releasing force (RF) 0.29 N {30 gf} min.
Pretravel (PT) 0.25±0.15 mm
