ONLY FOR REFERENCE
Mitsumi Model Name
SOF-262HST
Mitsumi Model No.
R 66 7076
Operating Force/ Boss
1.6N / With
Mounting Height
1.5mm
Pcs/Reel
5,000
This specification is only for reference. If you have any questions for the details,
please contact SW engineering division.
For your adopting the products, the formal supply specification will be provided.
2‐11‐2,Tsurumaki,Tama‐shi.Tokyo 206‐8657 Japan.
SWITCH ENGINEERING SECTION
1049,Tateiwa,Iizuka‐shi. Fukuoka 820‐8533 Japan.
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APPROVED CHECKED
General Specification
WRITTEN
Mar.10th.'09 Mar.10th.'09 Mar.10th.'09
SW
Terashita
1452
With Button Tactile Switch
SOF Series
Issued
SW
Kawaguchi
SW
Kikuchi
Mar. 10th, 2009
1. GENERAL SCOPE
1-1 THE SCOPE OF APPLICATION
This specification covers the general requirements of mechanical and electrical characteristics of
With Button Tactile Switch mainly used as signal switch of electric devices.
1-2 TEST CONDITIONS
Tests and measurements shall be made in the following standard conditions
unless otherwise specified.
Normal temperature : 5 to 35 degrees C
Normal humidity: Relative humidity 45 to 85%
In case any question arises from the judgment made, tests shall be conducted
the following conditions.
Temperature : 20+/-2 degrees C, Humidity: 65 +/- 5%
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2. APPEARANCE AND CONSTRUCTION
2-1 Outer dimensions: Refer to the attached drawing.
2-2 Materials: As shown in Table-1.
2-3 Appearance:
There should be no critical crack, scratch, dirt, discoloration and contamination
which affect the functional characteristics of the switch. If these problems don't
affect the characteristics, the switch can be judged as a good one.
2-4 Cross section
Fig-1
Table-1
Material
Part Name
(1) COVER
SUS
(2) BUTTON 4
Nylon
(3) COVER TAPE
Polyimide
(4) BASE
Nylon
(5) CLICK SPRING
dia. 2.4 mm, SUS
(6) TERMINAL
Phosphor bronze
*This switch applies to RoHS Compliance.(2011/65/EU)
3. RATING
Refer to the attached drawing.
7
Ni + Ag
Ag clad
6
Jul.1st.'15 Correct Table-1,10-17,11-2
Eguchi
6×5
Jun.3rd.'15 Changed 2-4,3,6-1,11-2
Eguchi
4×2
3
2
3×2
2×2
1
Changed 4-4,8-1.
Added 10-17 precaution in use.
Jul.5th.'13 Collected error (Slider => Button)
p
Deleted item11 and 13-3))
Apr.22th.'13
Dec.25th.'14
Dec.16th.'11 Added push rod shape (SOF-242HST / HNT)
Apr.15th.'09 Revisions
COVER
BUTTON 4
COVER TAPE
BASE
CLICK SPRING
TERMINAL
Remarks
7×4
5×3
(1)
(2)
(3)
(4)
(5)
(6)
Eguchi
Koutake
Koutake
Koutake
Kikuchi
6
Code
ID No.
File No.
S 66 1452
MITSUMI ELECTRIC CO., LTD.
07
S-0115
(2) of ( 9 )
4. ELECTRICAL CHARACTERISTICS
Test conditions
Items
Criteria
4-1
Placing the switch such that the direction of switch operation is
Refer to the attached drawing.
Contact
vertical and applying a below static load to the operating direction,
Resistance
measurement shall be made.
(1)Depression
1.5 to 2 times the operating force of the standard
center value.
(2)Measuring method
To be measured with A.C. 1 kHz +/- 200 Hz
(MAX. 20 mV, 50 mA)
4-2
10 M ohm min.
Measurements shall be made following the test set
Insulation
force below:
Resistance
(1)Test voltage
100 V DC for 1 min.
(2)Applied position
Between all terminals between terminal and cover.
4-3
Withstanding
Voltage
Measurements shall be made following the test set
force below
(1)Test voltage
100V AC (50/60 Hz) for 1min.
(2)Leak current
2 mA
(3)Applied position
Between all terminals between terminal and cover.
There shall be no damage
and breakdown.
4-4
Bouncing
Lightly striking the center of the knob at a rate
encountered in normal use (3 to 4 operations per sec.),
bounce shall be tested at "ON" and "OFF".
ON bounce :10 ms. Max.
OFF bounce:10 ms. Max.
2
SW
DC5 V
"ON"
5k
Oscilloscope
"OFF"
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(3) of ( 9 )
5. MECHANICAL CHARACTERISTICS
Test conditions
Items
5-1
Placing the switch such that the direction of switch operation
Operating
is vertical and then gradually increasing the load applied to
Force
the center of the stem, the maximum load required for the switch
to come to a stop shall be measured.
The measurement shall be made just after 10 times pushing.
Criteria
Refer to the attached drawing.
5-2
Return
Force
The sample switch is installed such that the direction of switch
operation is vertical and, upon depression of the stem in
its center the whole travel distance, the force of the stem
to return to its free position shall be measured.
The measurement shall be made just after 10 times pushing.
Refer to the attached drawing.
5-3
Travel
Placing the switch such that the direction of switch operation is
vertical and then applying a static load to the center of
the stem, the travel distance for the switch to come to a stop
shall be measured. The measurement shall be made just after
Refer to the attached drawing.
10 times pushing.
5-4
Stopper
Strength
Placing the switch such that the direction of switch operation
is vertical and then a below static load shall be applied in
the direction of stem operation.
1) Depression: 30 N
2) Time: 15 s
3) Push rod shape: dia. 2.0 with flat tip
dia.1.0 with flat tip (SOF-242HST / HNT)
There shall be no sign
of damage mechanically
and electrically.
Fig-2
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5-5
Impact Proof
Measurements shall be made following the test set forth below.
1) Acceleration: 735 m/s2
2) Acting time: 6 msec
3) Test direction: 6 directions
4) Cycles of test: 3 cycles per direction (18 cycles in total)
There shall be no sign of
damage mechanically and
electrically.
5-6
Vibration
Resistance
Measurements shall be made following the test set forth below.
There shall be no sign of
1) Range of oscillation: 10 to 55 Hz
damage mechanically and
2) Amplitude, pk-to-pk: 1.5 mm
electrically.
3) Cycle of sweep: 10-55-10 Hz in approx. 1 minute
4) Mode of sweep: Logarithmically sweep or uniform sweep
5) Direction of oscillation: Three mutually perpendicular directions,
including the direction of stem travel
6) Duration of testing: 2 hours each, for a total of 6 hours
File No.
MITSUMI ELECTRIC CO., LTD.
1452
( 4) of (9)
Items
5-7
Solderability
Test conditions
Measurements shall be made following the test set force below:
1) Soldering temperature: 230 +/- 5 degrees C
2) Soldering time : 3 +/- 0.5 seconds
3) Solder : Sn-3.0Ag-0.5Cu
4) Soldering flux : Rosin 25%, Alcohol 75%
Criteria
More than 75% of the
dipped part shall be covered
with solder.
5-8
Soldering
heat
Resistance
1) Hand soldering
1-1) Temperature of soldering iron tip: 350 +/- 5 degrees C
1-2) Soldering time: 3 +1/-0 seconds
1-3) The soldering iron should be applied to the terminals.
1-4) Excessive load should not be applied.
1-5) Power of the soldering iron should not exceed 15 W.
There shall be no damage
on appearance.
Electrical performance in
Section 4 shall be assured.
Operating force (Item 5-1)
shall be assured.
2) Reflow soldering
2-1) Heating method: Far-infrared heating
2-2) Temperature-time profile (Maximum value):
As shown below.
2-3) Allowable soldering time: 2 times
Temp
[degrees C]
Max 5 sec
250
230
180
150
90+/- 30 sec
30
10 sec
0
Profile of Reflow Soldering (Max) Time [sec]
The condition mentioned above is a temperature on the PWB/FPC
surface on which parts are mounted. There are cases
where board's temperature greatly differs from switch's surface
temperature, depending on board's material, size, thickness, etc.
Please care, therefore, should be used not to allow switch's
surface temperature to exceed 250 degrees C.
The above temperature profile is the conditions for
heat resistance test. Therefore, conditions of soldering shall
be confirmed under actual production conditions.
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5-9 Other precautions for soldering
1) Do not overheat when you solder with soldering iron.
2) Following the soldering process, do not clean the switch with a solvent or the like.
3) Safeguard the switch assembly against flux penetration from its top side.
4) As the conditions vary somehow on the kind of reflow soldering equipment,
please make sure you have the right one before use.
5) As the click ratio may deteriorate when a high heat load is applied, reflow soldering should be performed
in the shortest period and at the lowest temperature possible.
6) Please use the proper amount of solder in order to prevent the flux penetration into the switch.
7) Switch terminals and PWB/FPC upper face shall be free from flux prior to soldering.
8) Note that if the load is applied to the terminals during soldering it might cause deformation and defects
in electrical performance.
File No.
MITSUMI ELECTRIC CO., LTD.
1452
( 5) of ( 9)
6. ENDURANCE
Test conditions
Items
6-1
Measurements shall be made following the test set forth below :
Operating
(1) DC12 V 50 mA resistive load.
Life
(2) Rate of operation: 2 operations per second.
(3 Depression:
The maximum load of a specification of the operating force.
(4) Cycles of operation: Refer to the attached drawing. 7
(5)Pusher
Material SUS, dia. 4.0 Tip: flat shape
Criteria
Contact resistance:1 ohm max.
Insulation resistance:
10 M ohm min.
Bounce:
ON bounce 20 msec max.
OFF bounce 20 msec max.
Withstanding voltage: Item 4-3
Operating force: -30 to +30% of
initial force
Travel: Item 5-3
7. ENVIRONMENTAL
Test conditions
Items
7-1
After testing at +60+/-3 degrees C and 90 to 96%
Humidity
in relative humidity for 96 +/-5 hours, the sample is
Resistance
allowed to stand under normal temperature and humidity
conditions within an hour, then, measurement shall be made
within an hour.
*Water drops shall be removed.
7-2
Heat
Resistance
Criteria
Contact resistance:1 ohm max.
Insulation resistance:
10 M ohm min.
Bounce:
ON bounce 20 msec max.
OFF bounce 20 msec max.
Withstanding voltage: Item 4-3
Operating force: -30 to +30% of
initial force
After testing at +85+/-3 degrees C for 96 +/-5 hours, the sample is Travel: Item 5-3
allowed to stand under normal temperature and humidity
conditions within an hour, then, measurement shall be
made within an hour.
7-3
Cold
Resistance
After testing at -40+/-3 degrees C for 96 +/-5 hours, the sample is
allowed to stand under normal temperature and humidity
conditions within an hour, then, measurement shall be
made within an hour.
*Water drops shall be removed.
7-4
Temperature
Cycling
Following continuous five cycles of the temperature
cycling test set forth below:
85+/-2
degrees
120 min
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-40+/-3
dgrees C
120 min
10 to 15 min
1 cycle
10 to 15 min
File No.
MITSUMI ELECTRIC CO., LTD.
1452
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8. USE CONDITIONS
5
8-1 Operating temperature range: -10 to +60 degrees C.
(Temperature range which switch is electlically ON and OFF).
8-2 Using Environment
1) Do not expose the switch to corrosive gas such as sulfur gas, and salty wind.
2) Visible dust must be cleared.
3) As the switch may deform and change its quality, please do not apply excessive force to the switch.
9. STORAGE CONDITIONS
9-1 Storage temperature: -25 to 85 degrees C. No freeze and condensation.
9-2 Using Environment
1) Do not expose the switch to corrosive gas such as sulfur gas, and salty wind.
2) Visible dust must be cleared.
3) As the switch may deform and change its quality, please do not apply excessive force to the switch.
9-3 Storage Method
1) Store the switches in the following condition: with neither direct sunshine nor corrosive gas
and in normal temperature.
2) Do not stack too many switches for strafe. Shall be free from high temperature and high humidity.
3) The operating part of the switch should be free position in storage.
10. PRECAUTIONS IN USE
10-1 Do not clean the switch with a solvent or the like.
10-2 Never use the product beyond the rated current and voltage.
10-3 Do not apply excessive load to the terminals and the operating part.
10-4 Larger stress than specified and/or shock shall not be applied to the operating part.
10-5 The stress shall be not applied to the upper face of the switch.
g stress than specified
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10-6 The switch will be broken, if yyou g
give larger
while operating.
Take most care not to give both upward and downward stress to the switch when you operate it.
10-7 As the switch may be broken, please do no apply a load of more than 5 N to the switch bosses.
10-8 After mounting the switches on PWB/FPC, please do not stack too many PWB/FPC in order to
avoid excessive load to the switch mounted area.
10-9 The dimensions of a pattern for mounting a printed circuit board shall refer to
the recommended dimensions in the outline drawing.
10-10 Use of organic acid flux shall be avoided because it may cause corrosion of the switch.
Please make sure the type of flux before you use it.
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10-11 As this switch is designed for reflow soldering, if you place it at the edge of PWB/FPC for convenience
then flux may get into the sliding part of the switch during automatic dip soldering after being mounted,
so do not apply auto dip after being mounted.
10-12 If the switch is given stress from the side, the cover may drop off and it may result in
damages to switch functions. Therefore, please handle it with extreme care.
10-13 The operating part should be moved to the appointed position in order to ensure proper operation.
10-14 Do not give stress to the upper face of the switch while operating and use the switch under given stress.
10-15 If you use this product in one of the following environmental conditions, progress of sulfaration
and oxidization on the contact part (silver) will be accelerated, which may cause contact failure.
Therefore, be careful about the operation environment.
1) Around a sulfarate hot spring where sulfide gas is generated.
2) In case this product is always used in a place where exhaust gas from automobiles exist.
10-16 If you push the edge of stem, the switch might not operate properly.
An actuator to push the stem of switch in device case needs to be designed to touch
the whole surface of the stem evenly. (Fig-3)
10-17Unless provided for otherwise, the products have been designed and manufactured
for application in equipment and devices which are sold to end users in the market,
5
including audio-visual (AV) equipment, electrical home appliances, office machines,
information and communication equipment, and amusement equipment.
7
The products are not intended for use in, and must not be used for, any application
for nuclear equipment, driving equipment for aerospace or any other unauthorized use.
With the exception of the abovementioned prohibited applications, please contact
our sales representative and/or evaluate the total system regarding applicability for
applications involving high levels of safety and liability such as medical equipment,
burglar alarm equipment, disaster prevention equipment and undersea equipment.
Please also incorporate fail-safe design, protection and redundant circuitry,
malfunction protection, and/or fire protection into the complete system to ensure safety
and reliability of the total system.
OK
NG
Fig-3
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MITSUMI ELECTRIC CO., LTD.
1452
( 8 ) of ( 9)
12. TAPE PACKING SPECIFICATION
12-1 Carrier tape dimensions are shown below.
12-2 Taping Procedure
1) Tape winding direction is in clockwise.
(When pulling the tape toward, feeding holes should be located on the right side.)
2) Feeding holes shall not be covered with the cover tape.
6
The cover tape shall not be run off the edge of the carrier tape.
3) At the beginning of reel (the trailer tape part), 160 mm or more shall be empty.
7
The leader part shall be 400 mm or more and it shall include 100 mm or more of empty part.
At the end of the leader part, 20 mm to 30 mm of the cover tape shall be not bonded to
the carrier tape.
4) After reeling, stick the leader part of cover tape to the side of the reel with
adhesive tape (30 to 50 mm)
5) Peeling strength of cover-tape from carrier-tape is 0.1 to 1.3 N at 165 to 180 deg.
angle in reverse.
6) Switch shall be packed in single direction.
7) 5,000(SOF-242***, 262***) or 4000(SOF-232***) switches shall be pack in a reel.
8) The label which indicates our model number, part number, contained quantity
and inspection numbershall be stuck on the side of the reel.
9) The switch shall drop by itself when it is pushed with a force of 0.1 to 0.2 from
1
the back after peeling the cover tape.
6
7
Trailer tape part(Empty part)
160 mm or more
Packed portion
Barcode Label
Leader part(Empty part)
100 mm or more
Non-bonded cover tape
20~30 mm
Leader part
400 mm or more
Mitsumi Label
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File No.
MITSUMI ELECTRIC CO., LTD.
1452
(9) of (9)
1) Inner Package
Reel
Min: dia. 60
13. Packing Specification
dia. 380
14 +/-0.5
2 +/-0.5
Expansion
The material of a reel : PS
3-2 +/-0.5
dia. 13 +/-0.5
Bar Code Label Mitsumi Label
5 reels at maximum
shall
h ll be
b packed
k d in
i a inner
i
b
bag.
PE Bag
2) Outer package
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Outer Box
Bar Code Label
170
5 reels at maximum
shall be packed in a outer package.
400
400
File No.
MITSUMI ELECTRIC CO., LTD.
1452