Nirmal
Graphics Keyboard manufacturing company
located in Mumbai (vasai) has wide range of experience in making
membrane keyboards. ie. PCB type keyboard, flexible type keyboard, and also manufacturing
doming label aluminum dial and self adhesive tape. Also manufacturing
Poly carbonate front stickers as per the customer requirements.
Flexible keyboard are usually manufactured according to the
customer’s specifications for prototypes and quantity keyboards.
Flexible keyboards are of two types i.e. Flexible keypad & Flexible
tactile keypad
The above keyboards can also be assembled on Base plates of
Aluminium, M.S. Epoxy etc. and supplied as a complete Front Panel.
Specifications & Environmental Humidity No effect at 90 % R.H. Operating Temperature - 25 to 75 + degrees Celsius Storage Temperature - 30 to 85 + degrees Celsius
Electrical Capacitance < 15pf. Contact Bounce < 10ms. Contact Rating 5 V DC 15 Ma Max. Switch configuration Momentary SPST, normally open Contact Resistance Circuit dependent. Generally less than 100 Ohms. Switch Logic Special / Matrix / Common Bus
Mechanical Key movement 0.18mm. to 0. 42mm Dome opration up to 10million operations. Actuation Force 150 gms. to 350 gms.
Mounting & Termination Methods. It is necessary to select the correct mounting and termination for
the membrane keyboard to ensure is long life and reliable operation.
Flexible keyboards are terminated through Clincher Connectors or by
a Male Solder able Contacts. Various mounting methods viz., Adhesive back, keyboard mounted on
backing plate, sliding type arrangements for keyboards with rigid
base keyboards mounted by screws visible / invisible from front side
etc. are followed. Even special mounting arrangement to suit a
specific need can also be devised.
PCB BASED KEYBOARD
PCB keyboard are normally terminated through single row/double row
berg strips, IC sockets, FRC connectors, solder able pads. Etc.
Contacts and control components can be mounted with press machine
The cost-effectiveness of your overall system is increase by space
saved.
Advantages PCB Based Keyboard
• Display fields LED, window clearly
• Weight reductions and space savings through
• Separated of screw connections by means of single layer
• Save your electricity and electronic and electric equipments
• PCB with the double function as a substrate for the keypads and
the connected
electronics hermetic sealing of pcb and foil
