OMRON B3FS

New Product News
SMD Tactile Switch
B3FS-4
Surface-mounting Switches
with 12 x 12 mm size
• Surface-mounting device of B3F-4 series.
• Distinctive snapping action and extended mechanical/electrical
durability.
• Available in embossed taping packages for automatic mounting.
RoHS Compliant
■ Ordering Information
● List of Models
Type
Plunger type
12 x 12 mm
B3FS-4002P
Height
Operating force (OF)
Plunger color
4.3 mm
1.47 N
Black
Embossed taping
Model
Quantity per package
B3FS-4002P
1,000
Note: Order in multiples of the minimum order unit. Switches are not sold individually.
■ Specifications
● Ratings/Characteristics
Switching capacity
● Operating Characteristics
1 to 50 mA, 5 to 24 VDC (resistive load)
-25 to +70 degC at 60%RH max.
Ambient operating temperature
(with no icing or condensation)
Ambient operating humidity
35 to 85%RH (at +5 to +35 degC)
Contact configuration
SPST-NO
Contact resistance
100 m max. (initial value)
(rated: 1 mA, 5 VDC)
Insulation resistance
100 M (at 250 VDC)
Dielectric strength
500 VAC 50/60Hz for 1min
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
3,000,000 operations min.
Weight
Approx. 1 g
Item
Model
Operating force (OF)
B3FS-4002P
1.470.49N {15050 gf}
Releasing force (RF)
0.15 N {15 gf} min.
Pretravel (PT)
0.250.15 mm
■ Dimensions
Note: 1. All units are in millimeters unless otherwise indicated. Unless otherwise specified, a tolerance of 0.4 mm applies to all dimensions.
Note: 2. The numbers used for terminals in the following graphics are indicated in the “Bottom View” diagram in the right. 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)
B3FS-4002P
ø7.1
PCB Pad (Example)
(TOP VIEW)
12±0.2
Terminal Arrangement/
Internal Connection
(Top View)
1
12±0.2 5±0.2
1
4
3
2
1
2.6±0.1 7.4±0.1
12±0.1
16.6±0.1
MAX0.4
4.3±0.2
0.1
15
1
B3FS-4
SMD Tactile Switch
■ Precautions
Be sure to read the safety precautions common to all Tactile Switches for correct use.
Precautions for Correct Use
● PCBs
● Packaging Specifications for Embossed Taping
If the PCBs are separated after mounting the Switch, particles
from the PCBs may enter the Switch. If PCB particles or foreign
particles from the surrounding environment, workbench, containers, or stacked PCBs become attached to the Switch, contact
failure may result.
(29)
Tape drawing direction
● Soldering
1. General Precautions
Before soldering the Switch on a multilayer PCB, test to confirm
that soldering can be performed properly. Otherwise the Switch
may be deformed by the soldering heat on the pattern or lands of
the multilayer PCB.
Do not solder the Switch more than twice, including rectification
soldering. An interval of five minutes is required between the first
and the second soldering, or it may result in melting housing and
deterioration of operating characteristics.
ø13.2
Label
Reel (Material: PS)
ø1.5+0.1
0
ø380±2
16±0.1
4±0.1
2
A
11.5
2.Reflow Soldering (Surface Mounting)
Solder the terminals within the heating curve shown in the following diagram.
Temperture (°C)
(5.6)
1.75
24
A
Tape drawing direction
250 max.
● RoHS Compliant
220
180
150
Room
temperture
Preheating
60 to 120
Heating
Max.60
Time (s)
Note: The above heating curve applies if the PCB thickness is 1.6 mm.
The peak temperature may vary depending on the reflow bath
used. Confirm the conditions beforehand.
Do not use an automatic soldering bath for surface-mounted
Switches. The soldering gas or flux may enter the Switch and
damage the Switch's plunger operation.
The “RoHS Compliant” designation indicates that the listed models do not contain the six hazardous substances covered by the
RoHS Directive.
Reference:
The following standards are used to determine compliance for
the six substances.
Lead: 1,000 ppm max.
Mercury: 1,000 ppm max.
Cadmium: 100 ppm max.
Hexavalent chromium: 1,000 ppm max.
PBB: 1,000 ppm max.
PBDE: 1,000 ppm max.
3. Manual Soldering
Soldering temperature: 350 degC max. at the tip of the soldering
iron Soldering time: 3 s max. for a 1.6-mm thick, single-side PCB
Before soldering the Switch on a PCB, make sure that there is no
unnecessary space between the Switch and the PCB.
● Washing
This switch cannot be washed.
Doing so will cause the washing agent, together with flux or dust
particles on the PCB, to enter the Switch, resulting in malfunction.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
2