D3SK
Surface Mount Switch
The smallest detection
switch in the industry with
high precision operation.
(OMRON's data as of April 2008)
D
3
S
K
(3.0 × 3.5 × 0.9 mm (W × D × H))
● Ultra small size and ultra low profile contributing
to down-sizing of sets devices.
● A unique mechanism enables high contact
reliability and high precision operation.
● Long stroke improves easy installation.
● Meet a variety of applications by contact and
lever variations.
RoHS Compliant
Model Number Legend
Contact Form
●SPST-NO
1 2 3 4
D3SK @@@@
1. Contact form
A: SPST-NO
3. Lever and Direction of Operation
R: Right operating lever
B: SPST-NC
COM
N.O
COM
N.O
N.C
COM
N.C
L: Left operating lever
2. Boss of Positioning
0: without Boss
1: with Boss
4. Packaging Specifications
None : 1,000 pcs.
-6 : 6,000 pcs.
●SPST-NC
COM
Note. The cover has the same electric potential as the COM terminal.
List of Models
Contact Specifications
Direction of Operation
Boss of Positioning
Model
Packing form*
D3SK-A1R
1,000 pcs.
D3SK-A1R-6
6,000 pcs.
D3SK-A0R
1,000 pcs.
D3SK-A0R-6
6,000 pcs.
D3SK-A1L
1,000 pcs.
With Boss
Right
Without Boss
SPST-NO
With Boss
D3SK-A1L-6
6,000 pcs.
D3SK-A0L
1,000 pcs.
D3SK-A0L-6
6,000 pcs.
D3SK-B1R
1,000 pcs.
D3SK-B1R-6
6,000 pcs.
D3SK-B0R
1,000 pcs.
D3SK-B0R-6
6,000 pcs.
D3SK-B1L
1,000 pcs.
D3SK-B1L-6
6,000 pcs.
D3SK-B0L
1,000 pcs.
D3SK-B0L-6
6,000 pcs.
Left
Without Boss
With Boss
Right
Without Boss
SPST-NC
With Boss
Left
Without Boss
*
Products are packed with embossed tape.
1
D3SK
Surface Mount Switch
Contact Specifications
Contact Specifications
Ratings
Slide
Rated voltage
Resistive load
5 VDC
1 mA
15 μA at 3 VDC
Minimum applicable load
Note. The above rating values apply under the following test conditions.
(1) Ambient temperature: 20±2°C
(2) Ambient humidity: 65±5%
(3) Operating frequency: 20 operations/min
Characteristics
Permissible operating speed
Permissible operating
frequency
1 to 300 mm/s
Mechanical
60 operations/min
Electrical
60 operations/min
Insulation resistance
100 MΩ min. (at 100 VDC with insulation tester)
3 Ω min.
Contact resistance (initial value)
Dielectric strength
Between terminals of the same polarity
Vibration resistance *1
Malfunction
Shock resistance
Durability *2
100 VAC (50/60 Hz for 1 min)
10 to 55 Hz, 1.5 mm double amplitude
1000 m/s2 {approx. 100G} max.
Durability
300 m/s2 {approx. 30G} max.
Malfunction *1
Mechanical
150,000 operations min. (20 operations/min)
Electrical
100,000 operations min. (20 operations/min)
-25 to +85°C (at ambient humidity 60% max.) (with no icing or condensation)
Ambient operating temperature
85% max. (for +5 to +35°C)
Ambient operating humidity
Weight
Approx. 0.02 g
Note. The data given above are initial values.
*1. The given values apply for Total Travel Position. Close or open circuit of the contact is 1 ms max.
*2. For testing conditions, consult your OMRON sales representative.
Dimensions (Unit: mm) and Operating Characteristics
The @ is replaced with the code for the contact form that you need. See the "List of Models" for available combinations of models.
Model
Operating Characteristics
D3SK-@@R
D3SK-@@L
Operating Force
OF Max.
0.4 N {41 gf}
Free Position
Operating Position
Total Travel Position
FP
OP
TTP
4.95±0.15 mm
4.7±0.2 mm
3.5±0.2 mm
●Right operating - without Boss
D3SK-@0R
A
(0.8)
PCB land dimensions (reference)
(TOP VIEW)
1.4
(0.46)
Center of rotation 1.1
B
3.1 0.8
0.4
1.65
Free Position
0.25
Operating Position
Center of rotation
Total Travel Position
D
3
S
K
0.4
1.1
0.55
1.65
3
0.39
0.9±0.05
2.2
4.4
0.5
0.36
Note 1. Unless otherwise specified, a tolerance of ±0.15 mm applies to all dimensions described in the above figure.
Note 2. The operating characteristics are for operation in the A direction () and B direction (, ) has the same operation characteristic values as of the A direction.
2
D3SK
Surface Mount Switch
●Left operating - without Boss
D3SK-@0L
A
PCB land dimensions (reference)
(TOP VIEW)
(0.8)
1.4
(0.46)
Center of rotation 1.1
B
Total Travel Position
Free Position
Operating Position
Center of rotation
0.25
0.8
0.4
0.55
1.65
1.1
3.1
0.4
1.65
3
D
3
S
K
2.2
0.39
0.9±0.05
4.4
0.5
0.37
●Right operating - with Boss
D3SK-@1R
A
(0.8)
(0.46) Center of rotation 1.1
0.4
PCB mounting hole and land dimensions (reference)
(TOP VIEW)
1.4
B
2-0.7 +.05
0 dia.
3.1 0.8
0.4
1.65
Free Position
0.25
C0.15
2±0.1
Total Travel Position
0.6±0.05 dia.
Operating Position
Center of rotation
3
0.9±0.05
0.4
0.55
1.65
2±0.05 1.1
2.8
2.2
4.4
0.39
0.5
0.37
●Left operating - with Boss
D3SK-@1L
A
(0.8)
1.4
(0.46)
Center of rotation 1.1
PCB mounting hole and land dimensions (reference)
(TOP VIEW)
0.4
B
2-0.7
Total Travel Position
Free Position
C0.15
2±0.1
Operating Position
Center of rotation
0.6±0.05 dia.
+0.05
0
dia.
0.25
0.8
0.4
3.1
0.4
0.55
2±0.05 1.1
2.8
1.65
1.7
3
2.2
0.39
4.4
0.9±0.05
0.5
0.37
Note 1. Unless otherwise specified, a tolerance of ±0.15 mm applies to all dimensions described in the above figure.
Note 2. The operating characteristics are for operation in the A direction () and B direction (, ) has the same operation characteristic values as of the A direction.
Packaging Specifications
4±0.1
1.50 +0.10
dia. holes
0
8±0.1
Tape, carrier
2
(1.8)
(19)
Label
Feed direction
Standards
Conforms to JEITA
Package
Qty 1,000 pcs./reel
Qty 6,000 pcs./reel
1.8±0.1
6.9
12±0.30
Drawing direction
Standard package Qty: 1,000 pcs./reel
6,000 pcs./reel
Reel
13 dia.
380 dia.
3
D3SK
Surface Mount Switch
Precautions
★Please refer to "Common Precautions" for correct use.
Caution
Correct Use
●Electrical Ratings
●Mounting
• Confirm the contact load in order to select an appropriate
switch rating.
• Do not apply an excessive electrical load to the contacts,
otherwise the contacts may weld, resulting in a short circuit or
burning.
• The cover has the same electric potential as the COM
terminal. Do not short-circuit the cover with a NO or NC
terminal when mounting the cover.
Cover
D
3 ●Terminal Connection
S
K • Do not use flow soldering or hand soldering to solder
terminals.
• Conduct reflow soldering within the range shown in the
terminal temperature profile below.
Some reflow soldering devices have extremely high peak
values. Do a test in advance to confirm proper soldering
conditions.
• Do not conduct reflow soldering more than twice. Also provide
a time interval of at least five minutes between the first and
second reflow soldering processes to allow the Switch to
return to room temperature.
Heating the Switch continuously (without an interval) may
cause the edges of the Switch to melt and degrade the
characteristics.
• When printing for a cream solder process, a 0.13 mm screen
thickness is recommended.
• Be sure to provide local ventilation.
• Be careful of the following points. Incorrect handling may lead
to insufficient actuator return, Switch damage, or reduced
durability.
- Set the operating body in line with the direction of the
actuator movement, and make sure that the operating
body is completely separate from the actuator when the
Switch is in the free position (FP). When the actuator is
operated from the crosswise direction of the Switch, make
sure that the corner of the operating body has a minimum
radius of R1.
R1 min.
Operating body
MAX255°C
220°C
180°C
150°C
Preheating time
Heating time
90 to 120 s
40 s max.
●Printed Circuit Boards
Special attention must be paid to the handling of printed circuit
boards after a Switch has been mounted onto them. Airborne
PCB particles may penetrate the interior of the Switch when
printed circuit boards are separated by cutting. Also, do not stack
printed circuit boards that have Switches mounted on them.
●Product Specification Details
This document provides only a partial list of specifications. It is
recommended that you request complete drawings and
specifications prior to purchasing or using the product.
- Set the Switch stroke to 70% to 100% of the overtravel
(the difference between the operating position and the
total travel position).
- Do not subject the Switch to operations that involve strong
impact.
- Do not use the Switch as a stopper.
- Do not apply excessive loads to the cover or operate the
actuator from a direction other than a specified operating
direction.
- Do not use an adhesive to secure the Switch.
• A lubricant is used in the Switch. Some of the lubricant may
seep out because the Switch does not have an airtight
construction. Consider this possibility with respect to the
usage conditions when designing or using the Switch.
●Application Environment
• Do not use the Switch in locations that are subject to toxic gas,
silicon gas, excessive dust, excessive dirt, high temperatures,
high humidity, sudden temperature changes, water splashes,
or oil splashes.
• Otherwise, damage resulting by faulty contact of the Switch
contacts, corrosion, or other causes, or other functional faults
may occur.
●Insulation and Wiring
Be sure that the installation conditions provide a sufficient
insulation distance between Switch terminals and other metal
parts, lands, etc.
●Cleaning
The Switch does not have an airtight construction, and it must
not be cleaned with cleaning fluids. Malfunctions may occur if the
cleaning fluid penetrates the interior of the Switch together with
flux or foreign matter from the surface of the PCB.
●Confirmation with Actual Equipment
Be sure to confirm the quality of the product under the load and
environmental conditions that will be used during actual
applications.
4
D3SK
Surface Mount Switch
D
3
S
K
• 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.
Note: Do not use this document to operate the Unit.
OMRON Corporation
ELECTRONIC AND MECHANICAL COMPONENTS COMPANY
Contact: www.omron.com/ecb
Cat. No.B115-E1-03
1113(0207)(O)
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