Ultra-small Tactile Switch (SMT)
Ultra-small Surface-mounting Tactile
Switches with High Contact Reliability
(1.2
×
3
×
2.5 mm (H
×
W
×
D)
• Smallest class in the industry for high-density
mounting of compact devices.
• Surface mounted: Ideal for high-density mounting.
• Models with ground terminals are available for
protection against static electricity.
• Available on embossed tape: Ideal for automatic
mounting.
RoHS Compliant
■
B3U
List of Models
Embossed taping (standard quantity)
Embossed taping (small quantity)
Without
ground
terminal
B3U-1000PM
With ground
terminal
B3U-1100PM
Minimum
packing
unit
1,000
Contact
material Height
Silver
plated
Operating Plunger
force (OF) color
Black
Locating
pin
Without
boss
With
boss
3.2 mm 1.59 N
{162 gf}
Without
boss
With
boss
Without
ground
terminal
B3U-1000P
B3U-1000P-B
B3U-3000P
B3U-3000P-B
With ground
terminal
B3U-1100P
B3U-1100P-B
B3U-3100P
B3U-3100P-B
4,000
Minimum
packing
unit
3,500
Operation
type
B3U-1000
Series:
Top-
actuated
B3U-3000
Series:
Side-
actuated
1.6 mm 1.5 N
{153 gf}
B3U-1000PM-B B3U-1100PM-B
B3U-3000PM
B3U-3100PM
1,000
B3U-3000PM-B B3U-3100PM-B
Note:
■
Orders must be made in multiples of the order unit specified above.
■
Side-actuated
(B3U-3000 Series)
Ratings/Characteristics
Operation
type
Top-actuated
(B3U-1000 Series)
1 to 50 mA, 3 to 12 VDC
10
μA
at 1 VDC (resistive load)
-25°C to +70°C at 60%RH max. (with no icing or
condensation)
35% to 85% (at +5 to +35°C)
SPST-NO
100 mΩ max.
100 MΩ min. (at 100 VDC with insulation tester)
250 VAC, 50/60 Hz for 1 min
5 ms max.
10 to 55 Hz, 1.5 mm double amplitude
1,000 m/s
2
max.
200,000 operations
min.
Approx. 0.022 g
IEC IP40
Not possible
100,000 operations
min.
Operating Characteristics
Operation type
Top-actuated
(B3U-1000 Series)
1.50
±
0.49 N
{153
±
50 gf}
0.2 N min. {20 gf}
0.15
+0.2
mm
−0.1
0.2
+0.2
mm
−0.1
Side-actuated
(B3U-3000 Series)
1.59
±
0.49 N
{162
±
50 gf}
Item
Item
Operating force (OF)
Releasing force (RF)
Pretravel (PT)
Rating
(resistive load)
Minimum applicable
load (reference value)
Ambient operating
temperature
Ambient operating
humidity
Contact form
Contact resistance
(initial value)
Insulation resistance
Dielectric strength
Bounce time
Vibration resistance
Shock resistance
Durability
Weight
Degree of protection
Washing
1
B3U
■
B3U
(Unit: mm)
Dimensions
Top-actuated Models
Without Ground Terminal, without Boss
B3U-1000P(M)
Terminal Arrangement
/Internal Connections
(Top View)
With Ground Terminal, without Boss
B3U-1100P(M)
Terminal Arrangement
/Internal Connections
(Top View)
2
1
2
1
3
1.6
+0.15
−0.10
PCB Pad
(Top View)
1.2
+0.15
−0.10
4.2±
0.1
2.6±
0.1
1.7±
0.1
4
3
4
3
1.6
+0.15
−0.10
1.2
+0.15
−0.10
PCB Pad
(Top View)
4.2±
0.1
2.6±
0.1
1.7±
0.1
2.5
1.4
2.5
1.4
1.9
1.1
±
0.1
1.1
±
0.1
1.5 dia.
1.5 dia.
0.5
0.8
±
0.1
Without Ground Terminal, with Boss
B3U-1000P(M)-B
Terminal Arrangement
/Internal Connections
(Top View)
With Ground Terminal, with Boss
B3U-1100P(M)-B
Terminal Arrangement
/Internal Connections
(Top View)
2
1
2
1
3
4
3
1.6
+0.15
−0.10
1.2
+0.15
−0.10
PCB Pad
(Top View)
4.2±
0.1
2.6±
0.1
1.6
+0.15
−0.10
PCB Pad
(Top View)
1.2
+0.15
−0.10
4.2±
0.1
2.6±
0.1
1.7±
0.1
4
3
2.5
1.4
1.7±
0.1
2.5
Hole: 0.75
+0.1
dia.
0
1.4
1.9
1.1
±
0.1
1.1
±
0.1
1.5 dia.
1.5 dia.
0.5
Hole: 0.75
+0.1
dia.
0
0.8
±
0.1
0.5
0.65
±
0.05
dia.
0.65
±
0.05
dia.
0.5
Note:
Unless otherwise specified, a tolerance of
±0.2
mm applies to all dimensions. No terminal numbers are indicated on the Switches.
2
B3U
Side-actuated Models
Without Ground Terminal, without Boss
B3U-3000P(M)
Terminal Arrangement
/Internal Connections
(Top View)
B3U
With Ground Terminal, without Boss
B3U-3100P(M)
Terminal Arrangement
/Internal Connections
(Top View)
2
1
2
1
3
4
3
1.7
0.9
1.2
+0.15
−0.10
PCB Pad
(Top View)
1
±0.1
4.2
±0.1
2.6
±0.1
3.2
4
3
1.7
0.9
1.2
+0.15
−0.10
PCB Pad
(Top View)
1
±
0.1
4.2
±
0.1
2.6
±
0.1
1.95
3.2
1.95
2.5
1.4
1.7
±0.1
2.5
1.4
1.9
1.7
±
0.1
1.1
±0.1
1.1
±0.1
0.5
0.8
±0.1
Without Ground Terminal, with Boss
B3U-3000P(M)-B
Terminal Arrangement
/Internal Connections
(Top View)
With Ground Terminal, with Boss
B3U-3100P(M)-B
Terminal Arrangement
/Internal Connections
(Top View)
2
1
2
1
3
4
3
1.7
0.9
1.2
+0.15
−0.10
PCB Pad
(Top View)
1
±0.1
4.2
±0.1
2.6
±0.1
3.2
4
3
1.7
0.9
1.2
+0.15
−0.10
PCB Pad
(Top View)
1
±
0.1
4.2
±
0.1
2.6
±
0.1
1.95
3.2
1.95
2.5
1.4
1.7
±0.1
2.5
1.4
1.9
1.7
±
0.1
1.1
±
0.1
1.1
±
0.1
Hole:
0.75
+0.1
dia.
0
0.5
Hole: 0.75
+0.1
dia.
0
0.8
±
0.1
0.5
0.65
±
0.05
dia.
0.65
±
0.05
dia.
0.5
Note:
■
Unless otherwise specified, a tolerance of
±0.2
mm applies to all dimensions. No terminal numbers are indicated on the Switches.
Precautions
Be sure to read the precautions common to all Tactile Switches on pages for correct use.
3
B3U
B3U
Please check each region's Terms & Conditions
by
region
website.
OMRON Corporation
Electronic and Mechanical Components Company
Regional Contact
Americas
https://www.components.omron.com/
Asia-Pacific
https://ecb.omron.com.sg/
Korea
https://www.omron-ecb.co.kr/
Europe
http://components.omron.eu/
China
https://www.ecb.omron.com.cn/
Japan
https://www.omron.co.jp/ecb/
Cat. No. A162-E1-07
0318(0207)(O)
© OMRON Corporation 2007-2018 All Rights Reserved.
In the interest of product improvement, specifications are subject to change
without
notice.
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