KTP-type / PET dome contact   IM-Type   PB-Type

Several options are available. KTP-type: The KTP-type, one of the basic Rubber-Contacts in the series, characteristics a molded key top with letters and icons printed on it. The KTP-type series incorporates spring and button operational functions, as well as switching, into a single rubber sheet. PB-type: The PB-type Rubber Contact combines a silicone body, with a plastic top. IM-type: The IM-type Rubber Contact combines plastic such as polycarbonate, PBT, PA66 with silicone rubber. Flexible design is available by this type.

Sectional View:

Type Designation Material  KTP  a. Printed key top silicone ink  b. Key top silicone rubber  c. Contact (RC side) Conductive silicone-ink or rubber  d. Housing -  e. Printed circuit board -  f. Contact (board side) -

Type Designation Material  IM  a. Plastic key top Polycarbonate resin(Injection molding)  b. Printing or double   injection plastic Ink or polycarbonate resin  c. Rubber silicone rubber silicone rubber  d. Plastic flame Polycarbonate resin  e. Printed circuit board -  f. Contact( board side) -

	Type Designation Material  PB  a. Hard plastic key top Special thermosetting resin  b. Key top silicone rubber  c. Dome silicone rubber  d. Contact Conductive silicone ink  e. Key top print Special polyester-base ink  f. Base silicone rubber  g. Housing -  h. Printed circuit board -
It is available to design dome and contact in RC.

Functions of Shin-Etsu Rubber-Contact:

Function/type KTP-type PB-Type  Contact Carbon Contact Conductive rubber Conductive print Metal Contact Gold plating  Dome Non-click Click Over-stroke click PET dome  Key top printing Key top surface printing *1 Back side printing  Key top Coating *2 Standard coat (OC) Semi-hard coat (SH) Hard coat(HH)  Metallic tone Key top printing Semi-hard coat (SH)  Lighting Key top lighting Highlight graphics  Light storage Key top light storage  Antibacterial *3   Material of specific gravity (White color only) :Mass production is possible. :Prototype production is possible. :Under study. :Under study. *1:The Rubber-Contact cannot be manufactured for some key top profiles and under other conditions. *2:Only the uppermost surface of the key top can be processed. However, the total surface can be processed for semi-hard (SH) products. *3:We can manufacture this Rubber-Contact by using PB-U type material for the key top.

Resistance Test Results Versus Oil, Chemicals and Environment Factors:

Test Item Test condition KTP-type PB-Type  Environmental test  High-temperature and  high-humidity test 60, 95%RH, 240H  Temperature cycle test -20~70, 40cycles  High-temperature test 90, 240H  Low-temperature test -40, 240H<  Weather resistance test* Sunshine weather meter, 150 continuous hours Yellowish  Oil and  chemical resistance test  Alcohol Soaked in ethanol, 12 hours  Artificial fingerprint liquid Soaked in artificial fingerprint liquid, 12 hours  Hard cream Placed in a high-temperature and high-humidity tester for 240 hours with left materials applied to the key top surface.  Olive oil  Glass cleaner  Rubbing test  Methanol 100 abrasion cycles with cotton canvas moistened with left materials pressed onto the key top surface with a force of 500g.  Ethanol  Toluene Swelling  Johnson Wax  Regular gasoline Swelling  Engine oil Swelling  Kerosene Swelling *Yellowing color difference data (based on Hunter's color difference method, in pursuance of JIS K7103) KTP-type: Standard product: gE=7.7, Improved product: gE=2.9, PB-N-type: gE=2.7 :Accepted *Circuit for acceptance There shall ce no cracks, breaks, peeling or other visible defects. There shall be no changes in color tone or other abnormalities. *The figures above show the changes in the characteristics under specific testing conditions, and therefore the figures are not guaranteed under actual operating conditions. Please note that the judgment will differ depending on the product specifications, and testing conditions.