B3D-4112 Omron, B3D-4112 Datasheet

4MM DOME

B3D-4112

Manufacturer Part Number
B3D-4112
Description
4MM DOME
Manufacturer
Omron
Series
B3Dr
Type
Tactile Switchesr
Datasheets
1.B3D-5112.pdf (6 pages)
2.B3D-4112.pdf (7 pages)

Specifications of B3D-4112

Circuit
SPST-NO
Switch Function
Off-Mom
Contact Rating @ Voltage
0.01A @ 12VDC
Actuator Type
Snap Dome
Mounting Type
Surface Mount
Orientation
Vertical
Illumination
Non-Illuminated
Operating Force
167gf
Contact Form
SPST - NO
Termination Style
Through Hole
Operating Temperature Range
- 40 C to + 80 C
Contact Voltage Dc Nom
12V
Contact Current Max
10mA
Actuation Type
Top
Switch Terminals
PCB / Push-on
Operating Force Min
1.18N
Operating Force Max
2.16N
Rohs Compliant
Yes
Actuator / Cap Color
White
Actuator Style
Dome
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
B3D4112
SW978
Single-key Type Added to Series of B3DA
Ultra-low Profile Dome Arrays
• No soldering required. Attach directly to PCB to make an ultra-low
• Matrix adhesive used to create highly dust-proof construction
• Lower profile, lighter weight, and crisp clicking action.
• Omron's unique circular contact action ensures a high level
• RoHS Compliant.
Application Examples
Use Dome Keys for the operating parts on various electronic devices that require low-profile controls, as follows:
• Operating switches with few mounted parts above PCBs.
• Small orders, where initial investment in Dome Arrays is not feasible.
• Applications requiring a single key only.
Specifications
Note: The Dome Keys are sold in units of 500 (20 sheets, with 25 Dome Keys per sheet). Orders must be made in multiples of 500 Dome Keys.
Diameter of contact dome
Operating force (OF)
Releasing force (RF)
Pretravel (PT)
Height
Life expectancy
Switching capacity
Minimum permissible load
Ambient operating temperature
Ambient storage humidity
Contact - base material
Plating
profile tactile switch. Construction provides strong resistance to
static electricity by having no soldered terminals.
with good ventilation.
of resistance to foreign matter.
(Example: Camera operating buttons)
(Example: Trial applications, commercial equipment, etc.)
(Example: Reset buttons)
Ultra-low Profile Dome Key
B3D
Item
4-mm dia.
approx. 170 ± 50 gf (1.67± 0.49 N)
20 gf min. (0.2 N min.)
0.2 ± 0.1 mm
0.3 ± 0.1 mm
500,000 operations min.
10 mA at 12 VDC (resistive)
1 mA at 3 VDC (resistive)
-40 to 80°C (at 60% RH max.) with no icing or condensation.
10% to 90% (at 40°C max.)
Stainless steel
Silver
B3D-4112
Ultra-low Profile Dome Key
Model
5-mm dia.
1,000,000 operations min.
B3D-5112
B3D
269

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B3D-4112 Summary of contents

Page 1

... Ambient storage humidity Contact - base material Plating Note: The Dome Keys are sold in units of 500 (20 sheets, with 25 Dome Keys per sheet). Orders must be made in multiples of 500 Dome Keys. Model B3D-4112 4-mm dia. approx. 170 ± (1.67± 0. min. (0.2 N min.) 0.2 ± 0.1 mm 0.3 ± ...

Page 2

... The surface structure of this adhesive has grid-shaped slits, as shown in the following cross-sectional diagram. These slits provide both ventilation and dust-proofing, which is required for contact dome operation. 15 µm Slits Recommended Contact Form 4 mm Diameter Contact Dome (B3D-4112) 5.2 dia. Gold-plated nickel 1.8 dia. Single-side PCB Resist ( µm) 2.8 dia. ...

Page 3

... Recommended Operating Part Form 4 mm Diameter Contact Dome (B3D-4112) Resin 1 dia. Entire circumference: R 0.2 Dimensions B3D-4112 B3D-5112 5 mm Diameter Contact Dome (B3D-5112) Entire circumference: R 0.2 Section A (54) 0.3 25, 7.4 dia (54 Section A (54) 25, 8.4 dia (54 Ultra-low Profile Dome Key Resin 1.5 dia. ...

Page 4

... PCB Pattern Diagrams B3D-4112 Precautions ■ Attaching to the PCB Remove the Dome Key from the sheet using tweezers or a vacuum pick-up tool, and attach it above the contact on the PCB surface, which has been wiped clean in advance. Press down on the top sur- face using an elastic material, such as urethane rubber, and a force of 2 ...

Page 5

... B3D Ultra-low Profile Dome Key MEMO ...

Page 6

... To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. OMRON ELECTRONIC COMPONENTS LLC 55 E. Commerce Drive, Suite B Schaumburg, IL 60173 847-882-2288 11/10 Cat. No. X303-E-1 Ultra-low Profile Dome Key Specifications subject to change without notice B3D OMRON ON-LINE Global - http://www.omron.com USA - http://www.components.omron.com Printed in USA ...

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