Sealed Tactile Switch (SMT)
B3SN
Sealed Surface-mounting Switches
Sealed Structure for High Reliability.
Available on Embossed Tape
• Sealed construction conforming to IP67 (IEC60529) provides high reliability in locations
exposed to dust or water. (* Excluding the terminal 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 automatic mounting.
RoHS Compliant
■
List of Models
6 × 6 mm Models
Without ground terminal
Bags
Model
Operating Plunger
force (OF)
color
Contact
Operation type material
Height
B3SN-3000
Series
Silver
plated
3.1 mm 1.57 N
{160 gf}
Ivory
B3SN-G Series Gold
plated
Gold-plated
1.76 N
{180 gf}
Black
Note:
■
B3SN3012
---
With ground terminal
Embossed taping
Minimum
packing
unit
100 pcs
---
Model
B3SN3012P
Bags
Minimum
packing
unit
Model
3,000 pcs B3SN3112
B3SN3012P-G
Embossed taping
Minimum
packing
unit
100 pcs
---
---
B3SN3112P
---
Minimum
packing
unit
3,000 pcs
---
Switches in bags must be ordered in units of 100 pieces, and Switches on embossed taping must be ordered in units of 3,000 pieces. Individual Switches are not sold individually.
Ratings/Characteristics
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/s2 {approx. 100G} max.
Durabulity
100,000 operations min.
Weight
Approx. 0.2 g
Degree of protection
IEC IP67
Washing
Possible
■
Model
Operating Characteristics
Item
Type
B3SN-3000 Series
Operating force (OF)
1.57±0.49 N {160±50 gf} max.
Releasing force (RF)
0.29 N {30 gf} min.
Pretravel (PT)
0.25±0.15 mm
B3SN-G Series
1.76±0.59 N {180±60 gf} max.
1
B3SN
■
B3SN
Model Structure
Film
Plunger
Contact dome
Pushbutton
Cover
Fixed contact
Terminals
■
Base
Dimensions
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.
2
1
4
3
(Bottom View)
Without Ground Terminal
B3SN-3012
B3SN-3012P
B3SN-3012-G
7±0.5
6
PCB Pad
(Top View)
4±0.2
6
9.5
4
3 dia.
2 3.1
1.2
0.1
Terminal Arrangement
/Internal Connections
(Top View)
4
3
2
1
+0.3
0
2.6 5.4
0.7
(4.6)
6.5
With Ground Terminal
B3SN-3112
B3SN-3112P
7±0.5
6
PCB Pad
(Top View)
4±0.2
Terminal Arrangement
/Internal Connections
(Top View)
9.5
4
6
4
3 dia.
3
5
3.4±0.2
1.4
2.6 5.4
2
1
+0.3
2 3.1
1.2
Note:
■
0.1
0
0.7
(4.6)
0.7
6.5
Unless otherwise specified, a tolerance of ±0.3 mm applies to all dimensions. No terminal numbers are indicated on the Switches.
Precautions
Be sure to read the safety precautions common to all Tactile Switches on pages for correct use.
2
B3SN
B3SN
• Application examples provided in this document are for reference only. In actual applications, confirm equipment functions and safety before using the product.
• Consult your OMRON representative before using the product under conditions which are not described in the manual or applying the product to nuclear control systems, railroad
systems, aviation systems, vehicles, combustion systems, medical equipment, amusement machines, safety equipment, and other systems or equipment that may have a serious
influence on lives and property if used improperly. Make sure that the ratings and performance characteristics of the product provide a margin of safety for the system or
equipment, and be sure to provide the system or equipment with double safety mechanisms.
Note: Do not use this document to operate the Unit.
OMRON Corporation
Electronic and Mechanical Components Company
Contact: www.omron.com/ecb
Cat. No. C096-E1-06
1014(0207)(O)
3