FPC membrane switch
FPC Membrane switch ,FPC membrane keypad,FPC membrane panel, FPC membrane button.
Basic info
FPC membrane switch has better conductivity and longer work life than silver film switch. The normally thickness of the copper foil is 1 ounces. Total FPC thickness is about 1.35mm.
Structure presentation
FPC membrane advantages compared with silver film switch
①Low resistance(10% of silver film switch)
②load large current(Normally 1Acurrent/0.5mm line)
③Components(LED and resistance)can be welded more firmly
④Good oxidation resistance, suitable for humid environment
⑤The connector at the end of cable can be made to smaller to save space.
Normal material:
(1)Graphic overlay material:
Finish | Specification | |
PC(polycarbonate) | Gloss | 0.175/.25/.35/.5 mm thickness |
Matt | 0.175/.25/.35/.5 mm thickness | |
PET (polyester) | Fine Texture | 0.15/.20 mm thickness (Autotex F150/F200, imported) |
Velvet Texture | 0.15/.20 mm thickness (Autotex V150/V200, imported) | |
Gloss with Hard Coat | 0.18 mm thickness |
(2)FPC:
1. ounce copper,total thickness 0.135~0.15mm
2. back adhesive material:3M467, 3M468, 3M9080A or others alternative
3. connector alternative :female:2.54mm;ZIF 1.0mm,ZIF 0.5mm or others specified
Working environment
Temperature: -20~80℃
Humidity: 40℃,RH <95%
Electrical performance
Circuit voltage: DC 50V MAX (others need meet components)
Circuit current: 1A MAX
Closed circuit resistance: normally <10 ohm(details see products designing and circuit length)
Button working life: >0.5 million times
Response time: <10 mS
Notice on mounting and operation
① Clean up the surface where the switch is bonded and make sure it is flat,without rust,oil and dust.
② Compare the size to membrane switch where need be stick ,check if position is correct.
③ Tear off 10mm length of the bottom release paper from side.
④ Put the tail through the back board. Please do not pull the tail with force. The minimum bending radian of the lead wire is R=2mm. The hold edge must smooth in case of damaging the tail.
⑤ Align the panel with the sticking place and press on the fixed part, then slowly remove the rest release paper and flat the panel.
⑥ The stick process is finished in one time.Switch can not be repeated stick.
⑦ Please make sure the bending angel of panel is lower than 15 degree when sticking.
⑧ Please do not pull the connector so hard when in connection. For female connector, please hold the house when in connector.
⑨ Do not pull the lead wire directly. For FPC( Flexible printed circuits) structure, please unlock the socket before plugging.
⑩ Note : To assure the switch life,please put it on the table flatly when testing the hand feeling.Do not pinch the button when holding it on hand.
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