ONLY FOR REFERENCE
Mitsumi Model Name
Mitsumi Model No.
Operating Force/ Boss
Pcs/Reel
SOU-244HNT
R 66 7823
2.4N / Without
5 000
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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General specification
Tactile switches
Approved
Checked
Drawn
Apr. 20, '15 Apr. 20, '15 Apr. 20, '15
SW eng.
SW eng.
SW eng.
Hirahata Kawaguchi
Higaki
SOU series
Apr. 20, 2015
Released
1785
1. General
1.1. Application
This specification is applied to side click type tactile switch named SOU series.
1.2. Operating temperature range: -40 to +60 deg-C
1.3. Storage temperature range:
-25 to +85 deg-C (Product level)
-20 to +50 deg-C (Taped condition)
1.4. Test conditions
Normal temperature; 5 to 35 deg-C, normal humidity; 45 to 85% RH.
If any doubt arises from judgement, tests and measurements shall be conducted
under the following conditions.
Temperature 20+/- 2deg-C, humidity 65+/-5% RH, and air pressure 86 to 106 kPa.
2. Appearance and Construction
2.1. Dimensions: Specified on Product specifications.
2.2. Materials:
Refer to Table-1.
2.3. Appearance: There shall be no defects that affect the performance of
the products such as crack, scratch, dirt, discoloration,
and contamination.
There may be rare occasions when any substance such as
a white stain attaches to the top of cover,
but this substance is a constituent of quick-drying grease
which doesn't affect the performance of switch.
2.4. Cross section view:
(1)
(2)
(3)
(4)
(5)
(6)
COVER
SLIDER
COVER TAPE
BASE
CLICK SPRING
TERMINAL
Fig. 1: Cross section of product
(1)
(2)
(3)
(4)
(5)
(6)
Table-1
Material
Components
Stainless steel
COVER
Nylon 46
SLIDER
COVER TAPE Polyimide
6T Nylon
BASE
CLICK SPRING Stainless steel
Phosphor bronze
TERMINAL
Note
Ni + Ag plated
Ag plated
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3. Rating
Specified on Product specification.
Revision
Code Division
S 66
△01×1
Aug.20,'15
Aug.20,
15
Nakashima
Modification.
MITSUMI ELECTRIC. CO., LTD.
File No.
1785
01
S-0115
(2/10)
4. Electric Characteristics
Item
Test conditions
4.1.
Measurements shall be made under the conditions shown in
Contact
Fig. 3.
resistance
1) Load: 1.5 to 2 times of the specified
standard operating force.
2) Measurement conditions: Contact resistance meter at
20 mV Max. and 50mA Max.
Max. 4.0 mm dia.
Misalignment
Criteria
Specified on
Product
specifications.
Push direction
1.6
NG
Flat tip
(Material: Stainless steel)
Fig. 2: Push rod
4.2.
Insulation
resistance
Fig. 3: Measurement conditions
Measurements shall be made under the following conditions.
1) Applied voltage: 100 V, DC
2) Duration: 1 min.
3) Applied position: Between terminals,
between terminal and cover.
10 M-ohm Min.
4.3.
Measurements shall be made under the following conditions.
Withstanding
1) Applied voltage: 100 V, AC (50/60 Hz)
voltage
2) Duration: 1 min.
3) Leak current: 2 mA
4) Applied position: Between terminals,
between terminal and cover.
There shall be
no damage and
breakdown.
4.4.
Bounce
ON bounce:
10 ms Max.
Measurements shall be made under the conditions shown in
Fig. 3.
Bounce time at "ON" and "OFF" shall be measured under the
following conditions.
1) Circuit: Refer to Fig. 4.
2) Frequency of operation: 3 to 4 times/sec.
SW
DC5 V
5 k-ohm
OFF bounce:
10 ms Max.
Oscilloscope
Fig. 4: Circuit
"ON"
"ON bounce"
Fig. 5: Bounce
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"OFF"
"OFF bounce"
File number
1785
MITSUMI ELECTRIC. CO., LTD.
S-0115
(3/10)
5. Mechanical Characteristics
Item
Test conditions
5.1.
Measurements shall be made under the conditions shown in
Operating
Fig. 3 just after striking 10 times lightly.
force
1) Measurement speed: 0.5 mm/sec.
2) Limit load to apply: 1.5 to 2 times of the specified
5.2.
standard operating force.
Return
Force (N)
force
5.3.
Travel
Criteria
Specified on
Product
specifications.
Operating force
Return force
Travel
Stroke (mm)
Fig. 6: Force-Stroke curve
5.4.
Stopper
strength
Measurements shall be made under the conditions shown in
Fig. 3 and at returned condition.
Load: 50 N
Duration: 15 sec.
Push stick shape: Fig7.
0.05mm
There shall be
no electrical
and mechanical
abnormality.
2.5mm 1mm
Fig. 7: Shear strength test
5.5.
Vibration
resistance
Measurements shall be made after testing under the
following conditions.
1) Vibration frequency range: 10 to 55 Hz
2) Amplitude: 1.5 mm (peak-to-peak)
3) Sweep ratio: 10-55-10 Hz in approx. 1 min.
4) Frequency sweep mode: Logarithmic or Liner sweep
5) Direction of vibration: 3 orthogonal directions including
the direction of operation.
6) Duration: 2 hr each (6 hr in total)
There shall be
no electrical
and mechanical
abnormality.
5.6.
Impact
resistance
Measurements shall be made after testing under the
following conditions.
1) Acieration: 735 m/s2
2) Duration: 6 msec
3) Test direction: 6 directions
4) Number of test: 3 times per direction (18 times in total)
There shall be
no electrical
and mechanical
abnormality.
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File number
1785
MITSUMI ELECTRIC. CO., LTD.
S-0115
(4/10)
5. Mechanical Characteristics
Item
Test conditions
5.7.
Measurements shall be made under the following conditions.
Solderability
1) Solder temperature: 230 +/- 5 dig-C
2) Dipping time: 3 +/- 0.5 sec.
3) Composition of solder: Sn-3.0Ag-0.5Cu
4) Soldering flux: Rosin 25%, Alcohol 75%
5.8.
Soldering
heat
resistance
1) Hand soldering
1-1) Temperature of soldering iron tip: 350 +/- 5 deg- 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.
2) Reflow soldering
2-1) Heating method: Far-infrared radiation heating
2-2) Temperature profile: As shown in below.
2-3) Allowable soldering time: 2 times Max.
Criteria
More than 75%
of dipped part
shall be covered
with solder.
There shall be
no abnormality
such as marked
looseness,
drop-off,
and assured
4. Electrical
Characteristics.
Operating force:
Item 5.1.
Temp.
(deg-C)
250
230
180
150
Max 5sec
30+/-10 sec
90+/-30 sec
0
Time (sec)
Fig. 8: Reflow soldering profile
The condition mentioned above is a temperature on
the PWB 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℃.
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5.9. Precautions for soldering
1) Do not overheat when you solder with soldering iron.
2) Do not wash the product with solvent or the like.
3) Safeguard the switch assembly against flux penetration from its top side.
4) The soldering conditions will be different depending on reflow soldering machines.
Conditions of soldering shall be confirmed under actual production conditions.
5) Reflow soldering shall be performed in shorter time and at lower temperature. Otherwise
click ratio may be decreased.
6) Please use the proper amount of solder in order to prevent the flux
penetration into the switch.
7) Please do not apply soldering flux to the terminals and mounting surface of PWB/FPC.
8) Note that if the load is applied to the terminals during soldering it might cause
deformation and defects in electrical performance.
File number
1785
MITSUMI ELECTRIC. CO., LTD.
S-0115
(5/10)
6. Durability
Item
Test conditions
6.1.
Measurements shall be made after testing under the
Operating life following conditions.
1) Electrical load: Rated load or no load.
2) Rate of operation: 2 cycles/sec.
3) Depression: The maximum value of specified operating
force.
4) Cycles of operation: Specified on the product
specification.
5) Pusher: Material Stainless steel, dia 4.0 Tip: flat shape
Criteria
Contact
resistance:
10 ohm Max.
Insulation
resistance:
10 M-ohm Min.
Withstanding
voltage:
Item 4.3.
Bounce
(ON/OFF):
20 msec Max.
Operating force:
Within +/-30%
of specified
initial value.
Travel:
Item 5.3.
7. Environmental
Item
Test conditions
7.1.
Following the test set forth below the sample shall be left in
Humidity
normal temperature and humidity conditions for 1 hr before
resistance
measurements are made.
Water drops shall be removed.
1) Temperature: 60+/-3 deg-C
2) Humidity: 90 to 96% RH
3) Duration: 96+/-5 hr
7.2.
Heat
resistance
7.3.
Cold
resistance
Following the test set forth below the sample shall be left in
normal temperature and humidity conditions for 1 hr before
measurements are made.
1) Temperature: 85+/-3 deg-C
2) Duration: 96+/-5 hr
Following the test set forth below the sample shall be left in
normal temperature and humidity conditions for 1 hr before
measurements are made.
Water drops shall be removed.
1) Temperature: -40+/-3 deg-C
2) Duration: 96+/-5 hr
Criteria
Contact
resistance:
1 ohm Max.
Insulation
resistance:
10 M-ohm Min.
Withstanding
voltage:
Item 4.3.
Bounce
(ON/OFF):
20 msec Max.
Operating force:
Within +/-30%
of specified
initial value.
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Travel:
Item 5.3.
File number
1785
MITSUMI ELECTRIC. CO., LTD.
S-0115
(6/10)
7. Environmental
Item
Test conditions
7.4.
Following continuous 5 cycles of the temperature cycling test
Temperature set forth below, the sample shall be left in normal
cycling
temaperature and humidity conditions for 1hr before
measurements are made.
Criteria
Contact
resistance:
1 ohm Max.
Insulation
resistance:
10 M-ohm Min.
85+/-2 deg-
Withstanding
voltage:
Item 4.3.
-40+/-3 deg120 min
120 min
10 to 15 min
10 to 15 min
1 cycle
Fig. 9: Temperature cycling test conditions
Bounce
(ON/OFF):
20 msec Max.
Operating force:
Within +/-30%
of specified
initial value.
Travel:
Item 5.3.
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8 Use Condition
8.
8.1. Operating temperature range: Refer to the item 1.2.
(Temperature range which the product is ON and OFF electrically.)
There shall be no freezing and condensation.
8.2. Using environment
1) Do not expose the products 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 Condition
9.1. Storage temperature range: Refer to the item 1.3. There shall be no freezing and
condensation.
9.2. Environment
1) Do not expose the products to corrosive gas such as sulfur gas, and salty wind.
2) Visible dust must be cleared.
3) Please do not apply excessive load to the products to avoid deformation and
deterioration.
9.3. Storage method
1) Products shall be packed in an airtight plastic bag and stored in cool place avoiding
direct sunshine.
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.
4) Do not store the products in the state of applying load on it's operation area.
5) Products should be used within six months after the date of delivery.
File number
1785
MITSUMI ELECTRIC. CO., LTD.
S-0115
(7/10)
10. Precautions in Use
10.1. Do not clean the products with a solvent or the like.
10.2. Do not use the products with beyond the rated current and voltage.
10.3. Do not apply excessive load to the terminals and the operating part.
10.4. Larger static load 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.
10.6. The switch will be broken, if you give larger stress than specified 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 5N to
the switch bosses.
10.8. After mounting the products 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 on PWB/FPC shall refer to the recommended dimensions in
Product specifications.
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.
10.11. As this switch is designed for reflow soldering, if you place it at the edge of PWB
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 the operating part, (refer to Fig.3) the switch
might not operate properly. Therefore, pressure to the operating part shall
be applied to the whole surface equally and avoid the pressured to the specific
one portion.
10.17. Unless 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,
including audio-visual equipment, electrical home appliances, office machines,
information and communication equipment, and amusement equipment.
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 us
(MITSUMI) 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.
10.18. If you intend to use the products for automotive, please let us know beforehand.
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File number
1785
MITSUMI ELECTRIC. CO., LTD.
S-0115
(8/10)
11. MANUFACTURING LOCATION
<Sales Section>
MITSUMI ELECTRIC CO.,LTD.
2-11-2 Tsurumaki, Tama-shi, Tokyo, Japan
<Management Section>
MITSUMI ELECTRIC CO.,LTD., Kyushu Business Division
1049 Tateiwa, Iizuka-shi, Fukuoka, Japan
<Manufacturing Section>
QINGDAO MITSUMI ELECTRONICS CO.,LTD.
No.2, Dayangzhou Road, Qingdao West Coast Export Processing Zone, Qingdao city,
Shandong Province, People's Republic of China
12. Packing Specification
12.1. Dimensions of carrier tape are as shown below.
12.2. Taping rule
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.
The cover tape shall not be run off the edge of the carrier tape.
3) 160 mm or more from the end of trailer tape part shall be empty.
4) The leader part shall be 400 mm or more and it should include 100 mm of empty part.
The leader part shall have 20 to 30 mm of un-sealed cover tape.
5) The top tape of the leader part shall be stuck on the side of the reel by 30 to 50 mm
using adhesive tape.
6) Peeling strength of cover tape from carrier tape is 0.1 to 1.3 N at 165 to 180 deg.
7) Switch shall be packed in single direction.
8) 5,000 switches shall be packed in a reel.
9) Bar-code
Bar code label and Mitsumi label shall be stuck on the side of the reel
reel.
10) The products shall free drop from the reversed carrier tape without cover tape after
pressing at 0.1 to 0.2 N force.
F
D
A
C
E
B
G
A
12
B
C
D
E
F
G
1.75 5.5+/-0.1
8
4+/-0.1
2+/-0.1 1.5 dia +0.1/-0
Fig. 10 Carrier tape dimensions
Trailer part
with 160 mm or more of empty pockets
Pocket with
products
Leader part
400mm or more
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Empty pocket
100 mm over
Top tape without sealing
20 to 30 mm
File number
1785
MITSUMI ELECTRIC. CO., LTD.
S-0115
(9/10)
13. Packing Specification
1) Inner packing specification
14 +/-0.5
Reel
380 dia.
60 Min. dia.
2 +/-0.5
3 - 2 +/-0.5
Material: PS
13 +/-0.5 dia.
Bar-code label
MITSUMI label
2) Outer box specification
Bar-code label
170
400
400
PE bag
5 reels max. shall be packed in an inner bag.
3) MITSUMI label specification
PARTNO
[G]
************
MODEL
SOU-********
SPEC.R-
R66 ******
5000 PCS
00
*********-**
MADE IN CHINA
MITSUMI ELECTRIC CO.,LTD.
MITSUMI model code
MITSUMI part number
Quantity
Lot number
Country of origin
Customer's part number
Lot - production line number
MITSUMI part number
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***************
R66 ******
G: RoHS compliance
Customer's part number
File number
1785
MITSUMI ELECTRIC. CO., LTD.
S-0115
(10/10)
13. Packing Specification
4) Bar code label
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File number
1785
MITSUMI ELECTRIC. CO., LTD.
S-0115