NINGBO BOLIN ELECTRONICS TECHNOLOGY CO.,LTD.

• Keys

Tactile keys

What tactile effect do you need?
Tactile domes produce an audible click when activated. The domes are available in several sizes and activation strengths ranging from 8 to 20 mm and from 225 to 450 g (8 to 16 oz).
Schéma d'une coupelle

Non-tactile keys
Activation on a keypad with no tactile domes is quicker and more sensitive.

• LED

Bolin generally uses miniature LEDs with a thickness of 0.020" for keypads that require indicator lights. They are available in several colours: white, yellow, orange, green, red, etc.

• Cable

The cable is an extension of the printed circuit and is used to communicate with your device. We offer several types of connectors.

Zero insertion force (ZIF) connector
Female connector
Female connector with latch
Male connector
Solder connector

• Shielding

Gasket seal
A gasket seal is used to protect the conductors against humidity and splashes. When humidity seeps into an unprotected membrane switch, migration and oxidation of the conductors can occur. Bolin recommends adding a seal as a precaution if there is humidity or liquid present. EMI / RFI / ESD Shielding

EMI : Electro-magnetic interference
RFI : Radio frequency interference
ESD : Electro-static discharge

An aluminum foil shielding is laminated to the circuit to absorb electro-static discharges. The ground can be connected to the switch cable or be separated as a stand-alone cable. If there are transparent windows on your graphic overlay (LCD display for instance), it is possible to use a clear ITO electrical conductive polyester which will provide the same protection as the aluminum shielding.