B3U Series Datasheet by Omron Electronics Inc-EMC Div

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OITIROD
1
B3U
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.
List of Models
Note: Orders must be made in multiples of the order unit specified above.
Ratings/Characteristics Operating Characteristics
RoHS Compliant
Embossed taping (standard quantity) Embossed taping (small quantity)
Operation
type
Contact
material
Height
Operating
force (OF)
Plunger
color
Locating
pin
Without
ground
terminal
With ground
terminal
Minimum
packing
unit
Without
ground
terminal
With ground
terminal
Minimum
packing
unit
B3U-1000
Series:
Top-
actuated
Silver
plated
1.6 mm 1.5 N
{153 gf}
Black Without
boss
B3U-1000P B3U-1100P 3,500 B3U-1000PM B3U-1100PM 1,000
With
boss
B3U-1000P-B B3U-1100P-B B3U-1000PM-B B3U-1100PM-B
B3U-3000
Series:
Side-
actuated
3.2 mm 1.59 N
{162 gf}
Without
boss
B3U-3000P B3U-3100P 4,000 B3U-3000PM B3U-3100PM 1,000
With
boss
B3U-3000P-B B3U-3100P-B B3U-3000PM-B B3U-3100PM-B
Item
Operation
type
Top-actuated
(B3U-1000 Series)
Side-actuated
(B3U-3000 Series)
Rating
(resistive load)
1 to 50 mA, 3 to 12 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 100 VDC with insulation tester)
Dielectric strength 250 VAC, 50/60 Hz for 1 min
Bounce time 5 ms max.
Vibration resistance 10 to 55 Hz, 1.5 mm double amplitude
Shock resistance 1,000 m/s2 max.
Durability 200,000 operations
min.
100,000 operations
min.
Weight Approx. 0.022 g
Degree of protection IEC IP40
Washing Not possible
Item
Operation type Top-actuated
(B3U-1000 Series)
Side-actuated
(B3U-3000 Series)
Operating force (OF) 1.50 ± 0.49 N
{153 ± 50 gf}
1.59 ± 0.49 N
{162 ± 50 gf}
Releasing force (RF) 0.2 N min. {20 gf}
Pretravel (PT) 0.15 mm 0.2 mm
+0.2
0.1
+0.2
0.1
B3U omRon 33U
2
B3UB3U
Dimensions (Unit: mm)
Top-actuated Models
Note: Unless otherwise specified, a tolerance of ±0.2 mm applies to all dimensions. No terminal numbers are indicated on the Switches.
Without Ground Terminal, without Boss With Ground Terminal, without Boss
Without Ground Terminal, with Boss With Ground Terminal, with Boss
3
4
2.5 1.4
2.6±0.1
1.7±0.1
4.2±0.1
1.5 dia.
1.6 +0.15
0.10
1.2 +0.15
0.10
PCB Pad
(Top View)
B3U-1000P(M)
21
Terminal Arrangement
/Internal Connections
(Top View)
1.9
0.5
3
4
2.5 1.4
0.8±0.1
1.1±0.1
1.1±0.1
2.6±0.1
1.7±0.1
4.2±0.1
1.5 dia.
1.6 +0.15
0.10
1.2 +0.15
0.10
B3U-1100P(M)
PCB Pad
(Top View)
Terminal Arrangement
/Internal Connections
(Top View)
2
3
1
B3U-1000P(M)-B
PCB Pad
(Top View)
Terminal Arrangement
/Internal Connections
(Top View)
21
1.6
+0.15
0.10
1.2
+0.15
0.10
0.65±
0.05
dia.
0.5
1.9
0.5
3
4
2.5 1.4
0.8±
0.1
1.1±
0.1
1.1±
0.1
2.6±
0.1
1.7±
0.1
4.2±
0.1
1.5 dia. Hole: 0.75+0.1
0dia.
B3U-1100P(M)-B
PCB Pad
(Top View)
2
3
1
Terminal Arrangement
/Internal Connections
(Top View)
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3
B3UB3U
Side-actuated Models
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.
Without Ground Terminal, without Boss With Ground Terminal, without Boss
Without Ground Terminal, with Boss With Ground Terminal, with Boss
1.95
1.7
0.9
3
3.2
4
2.5 1.4
2.6
±0.1
1.7
±0.1
4.2
±0.1
1.2
+0.15
0.10
1
±0.1
B3U-3000P(M)
PCB Pad
(Top View)
Terminal Arrangement
/Internal Connections
(Top View)
21
1.9
1.95
1.7
3
3.2
4
2.5 1.4
0.5
0.8
±0.1
1.1
±0.1
1.1
±0.1
2.6
±0.1
1.7
±0.1
4.2
±0.1
0.9
1.2
+0.15
0.10
1
±0.1
B3U-3100P(M)
PCB Pad
(Top View)
Terminal Arrangement
/Internal Connections
(Top View)
2
3
1
2.6
±0.1
1.7
±0.1
4.2
±0.1
1.95
3
3.2
4
2.5 1.4
0.5
1.2+0.15
0.10
1
±0.1
1.7
0.9
Hole: 0.75+0.1
0dia.
0.65±
0.05
dia.
PCB Pad
(Top View)
B3U-3000P(M)-B Terminal Arrangement
/Internal Connections
(Top View)
21
1.9
1.95
3
3.2
4
2.5 1.4
0.5
0.5
0.8
±
0.1
1.1
±
0.1
1.1
±
0.1
2.6
±0.1
1.7
±0.1
4.2
±0.1
1.7
0.9
1.2+0.15
0.10
1
±0.1
Hole: 0.75+0.1
0dia.
0.65±
0.05
dia.
B3U-3100P(M)-B
PCB Pad
(Top View)
Terminal Arrangement
/Internal Connections
(Top View)
2
3
1
BaU omRon B3U
B3UB3U
Cat. No. A162-E1-07
0318(0207)(O)
Please check each region's Terms & Conditions by region website.
OMRON Corporation
Electronic and Mechanical Components Company
Regional Contact
Americas Europe
https://www.components.omron.com/ http://components.omron.eu/
Asia-Pacific China
https://ecb.omron.com.sg/ https://www.ecb.omron.com.cn/
Korea Japan
https://www.omron-ecb.co.kr/ https://www.omron.co.jp/ecb/
In the interest of product improvement, specifications are subject to change without notice.
© OMRON Corporation 2007-2018 All Rights Reserved.

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