R-667903

ONLY FOR REFERENCE Mitsumi Model Name SOF-268HFT Mitsumi Model No. R 66 7903 Operating Force/ Boss 1.9N / With Mounting Height 1.5mm Button Shape Square 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. t6 c O1 .0 4 02 ( 1 ) of ( 9 ) 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% l5 u 1 J0 . 3 02 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" l5 u 1 J0 . 3 02 File No. MITSUMI ELECTRIC CO., LTD. 1452 (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 l5 u 1 J0 . 3 02 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. l5 u 1 J0 . 3 02 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 l5 u 1 J0 . 3 02 -40+/-3 dgrees C 120 min 10 to 15 min 1 cycle 10 to 15 min File No. MITSUMI ELECTRIC CO., LTD. 1452 ( 6 ) of (9) 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 p p g 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. l5 u 1 J0 . 3 02 File No. MITSUMI ELECTRIC CO., LTD. 1452 ( 7 ) of ( 9) 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 l5 u 1 J0 . 3 02 File No. 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 l5 u 1 J0 . 3 02 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 l5 u 1 J0 . 3 02 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