1
B3W Sealed Tactile Switch
Through-hole-mounting Switches
That Are Mounting-compatible
with B3F Series.
Sealed Structure for High Reliability
• Sealed construction conforming to IP67 (IEC-
60529) provides high reliability in locations
exposed to dust or water. (* Excluding the termi-
nal section.)
• Available in two sizes: 6 × 6 mm and 12 × 12 mm
sizes.
• Ground terminal available to protect against static
electricity.
• B32-series Key Tops mount to models with pro-
jected plungers.
■List of Models
6 × 6 mm Models
Note: Bulk Packaged, 100 switches per bag. Order in multiples of the package quantity.
12 × 12 mm Models
Note: Bulk Packaged, 100 switches per bag. Order in multiples of the package quantity.
RoHS Compliant
Type Contact
material
Plunger Height Operating
force (OF)
Plunger
color
Bags
Without
ground
terminal
Minimum
packing
unit
With ground
terminal
Minimum
packing
unit
B3W-1000
Series
Silver
plated
4.3 mm 1.57 N {160 gf}
max.
White B3W-1000
100 pcs
B3W-1100
100 pcs
2.26 N {230 gf}
max.
Yellow B3W-1002 B3W-1102
5.0 mm 1.57 N {160 gf}
max.
White B3W-1020 ---
2.26 N {230 gf}
max.
Yellow B3W-1022 ---
7.3 mm 1.57 N {160 gf}
max.
White B3W-1050 B3W-1150
2.26 N {230 gf}
max.
Yellow B3W-1052 B3W-1152
Type Contact
material
Plunger Height Operating
force (OF)
Plunger
color
Bags
Without
ground
terminal
Minimum
packing
unit
With ground
terminal
Minimum
packing
unit
B3W-4000
Series
Silver
plated
4.3 mm 1.96 N {200 gf}
max.
White B3W-4000
100 pcs
B3W-4100
100 pcs
3.43 N {350 gf}
max.
Yellow B3W-4005 B3W-4105
7.3 mm 1.96 N {200 gf}
max.
White B3W-4050 B3W-4150
3.43 N {350 gf}
max.
Yellow B3W-4055 B3W-4155
Flat type
Projected type
Flat type
Projected type
2
B3WB3W
■Ratings/Characteristics
■Operating Characteristics
6 × 6 mm Models
12 × 12 mm Models
■Model Structure
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. 100 G} max.
Malfunction: 100 m/s2 {approx. 10 G} max.
Durability B3W-1000:
1.57 N (standard force):1,000,000 operations min.
2.26 N (high-force):300,000 operations min.
B3W-4000:
1.96 N (standard force):3,000,000 operations min.
3.43 N (high-force):1,000,000 operations min.
Weight 6 × 6 mm: approx. 0.3 g, 12 × 12 mm: approx. 1 g
Degree of protection IEC IP67
Washing Possible
Type B3W-1000 series
Operating force (OF) 1.57 N 2.26 N
Item Model B3W-1@@0B3W-1@@2
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/–0.1 mm
Type B3W-4000 series
Operating force (OF) 1.96 N 3.43 N
Item Model B3W-4@@0B3W-4@@5
Operating force (OF) 1.96 N {200 gf} max. 3.43 N {350 gf} max.
Releasing force (RF) 0.29 N {30 gf} min. 0.49 N {50 gf} min.
Pretravel (PT) 0.3+0.2/–0.1 mm
Plunger
Cover Spacer
Contact dome
Sealed rubber
Fixed contact
Base
3
B3WB3W
■Dimensions (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.
■6 × 6 mm Models
Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions. No terminal numbers are indicated on the Switches.
(Bottom View)
2
4
1
3
B3W-1000
B3W-1002
B3W-1100
B3W-1102
PCB Processing Dimensions
(Reference Only) (Top View)
(PCB thickness, t=1.6)
PCB Processing Dimensions
(Reference Only) (Top View)
(PCB thickness, t=1.6)
PCB Processing Dimensions
(Reference Only) (Top View)
(PCB thickness, t=1.6)
Terminal Arrangement
/Internal Connections
(Top View)
Terminal Arrangement
/Internal Connections
(Top View)
Flat Plunger Type
(without Ground
Terminal)
B3W-1020
B3W-1022
Terminal Arrangement
/Internal Connections
(Top View)
Flat Plunger Type
(without Ground
Terminal)
Flat Plunger Type
(with Ground
Terminal)
ࠉ
ࠉ
0.3
ࠉ
0.7 0.7
6.5±0.1
4.5±0.1
Four, 1±0.05 dia.
4
2
3
1
3.3 dia.
4.5±0.2
6.6±0.2
6±0.2
3.5
3.4
(1.8)
7.7±0.5
6.5±0.5
5±0.2
6.6±0.2
6±0.2 3.3 dia.
4.5±0.2
4.3±0.2
3.5
(1.8)
0.7 0.7
3.4
6.5±0.5
7.7±0.5
0.3
6.5±0.1
4.5±0.1
Four, 1±0.05 dia.
4
2
3
1
6.5±0.1
4.5±0.1
4.1±0.1
Five, 1±0.05 dia.
6.6±0.2
6±0.2 3.3 dia.
4.5±0.2
4.3±0.2
3.5
(1.8)
0.7
1.5
0.7
0.25
0.7
3.4
6.5±0.5
7.7±0.5
0.3
4
2
3
1
5
4
B3WB3W
Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions. No terminal numbers are indicated on the Switches.
B3W-1050
B3W-1052
Terminal Arrangement
/Internal Connections
(Top View)
Projected Plunger Type
(without Ground
Terminal)
B3W-1150
B3W-1152
Projected Plunger Type
(with Ground
Terminal)
Terminal Arrangement
/Internal Connections
(Top View)
PCB Processing Dimensions
(Reference Only) (Top View)
(PCB thickness, t=1.6)
PCB Processing Dimensions
(Reference Only) (Top View)
(PCB thickness, t=1.6)
6.6±0.2
6±0.2 3.3 dia.
4.5±0.2
4.3±0.2
7.3±0.2
3.5
1.8±0.1
(1.8)
2.4 × 2.4±0.1
0.7 0.7
3.4
6.5±0.5
7.7±0.5
0.3
6.5±0.1
4.5±0.1
Four, 1±0.05 dia.
4
2
3
1
6.6±0.2
6±0.2 3.3 dia.
4.5±0.2
(1.8)
0.3
0.7
0.7
1.5
0.25
0.7
3.4
6.5±0.5
7.7±0.5
4.3±0.2
7.3±0.2
3.5
1.8±0.1
2.4 × 2.4±0.1
6.5±0.1
4.5±0.1
4.1±0.1
Five, 1±0.05 dia.
4
2
3
1
5
B3WB3W
■12 × 12 mm Models
Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.
B3W-4000
B3W-4005
Terminal Arrangement
/Internal Connections
(Top View)
Flat Plunger Type
(without Ground
Terminal)
B3W-4050
B3W-4055 B3W-4150
B3W-4155
Projected Plunger Type
(without Ground
Terminal)
Terminal Arrangement
/Internal Connections
(Top View)
Terminal Arrangement
/Internal Connections
(Top View)
Projected Plunger Type
(with Ground
Terminal)
B3W-4100
B3W-4105
Flat Plunger Type
(with Ground
Terminal)
Terminal Arrangement
/Internal Connections
(Top View)
PCB Processing Dimensions
(Reference Only) (Top View)
(PCB thickness, t=1.6)
PCB Processing Dimensions
(Reference Only) (Top View)
(PCB thickness, t=1.6)
PCB Processing Dimensions
(Reference Only) (Top View)
(PCB thickness, t=1.6)
PCB Processing Dimensions
(Reference Only) (Top View)
(PCB thickness, t=1.6)
4.3
±0.2
3.5
3.55
(1.8)
1.6 dia.
11
12.5
±0.5
9
13.8
±0.5
4.3±0.2
3.5
3.55
(1.8)
0.3 0.250.9
2.6
1.6
12.5±0.5
9
6.9
13.8±0.5
11
1.6
@3.8±0.1
4.3±0.2
3.5
3.55
(1.8)
0.3 1 1
12.5±0.5 9
13.8±0.5
1.8±0.1
7.3±0.2
1.6 dia.
4.3
±0.2
1.8
±0.1
7.3
±0.2
3.5
3.55
(1.8)
0.3 1 1
12.5
±0.5
9
13.8
±0.5
0.25
6.9
0.9
2.6
@3.8
±0.1
1.6
12±0.2
12±0.2 7.1 dia.
5±0.2
Four, 1.2±0.05 dia.
5±0.1
Two, 1.8±0.05 dia.
(for positioning boss)
12.5±0.1
9±0.1
4
2
3
1
12±0.2
12±0.2 7.1 dia.
5±0.2
Five, 1.2±0.05 dia.
5±0.1
6.9±0.1
12.5±0.1
Two, 1.8±0.05 dia.
(for positioning boss)
9±0.1
4
2
3
1
5
12±0.2
12±0.2
5±0.2
Four, 1.2±0.05 dia.
5±0.1
Two, 1.8±0.05 dia.
(for positioning boss)
12.5±0.1
9±0.1
4
2
3
1
12±0.2
12±0.2
5±0.2
Five, 1.2±0.05 dia.
5±0.1
6.9±0.1
12.5±0.1
Two, 1.8±0.05 dia.
(for positioning boss)
9±0.1
4
2
3
1
5
6
B3WB3W
■Key Tops
B32-series Key Tops are available for projected plungers. Refer to the datasheet for the B32 for details.
■Precautions
Be sure to read the safety precautions common to all Tactile Switches for correct use.
• 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.
Cat. No. A075-E1-07
1014(0207)(O)
Note: Do not use this document to operate the Unit.
OMRON Corporation
Electronic and Mechanical Components Company Contact: www.omron.com/ecb
