Customized Cable Tail Membrane Keypad /Medical Keypad/Instrument Keypad with Great Waterproof
ISO9001, UL, CE, CCC
Multi Control Switch
Type c Contact
Home Appliance, Telecommunication Equipment, With Remote Control, Calculator, Camera
Amplifier Separated Type
1: Membrane switch has below main advantages. 1)Small and portable. Generally, a membrane switch is several or dozens of grams, it is quite convenient to carry or disassemble. 2)Aesthetic appearance. It adopts advanced silk screen printing technology, with a special design; We can provide any custom solution you need. 3)Sealing. To meet customarily above 3 years.
2: Product's direction: To analyze products in the current market, most of them are getting to be short, small, lightweight, and thin. The membrane switch is just in accordance with this design, which is an electronic component in a combination of art and technology.
3: Type of membrane switch: Main types: There are many men's unique needs of the program, we can design the membrane switch to be water-proof, grease proofing, dust-proof, and static-free...With unique technologies, the membrane switch can endure a high voltage. 4)Good conductivity. The circuitry is printed with carbon, silver, copper foil and so on, it can be freely folded, and the resistance can be limited according to the customer's specification. 5)Low cost. Membrane switch is low price, some even cost only cents. Compare to other electronic components which have the same function, it is exactly a cheap price. 6)Long lifetime. The materials are with high isolation, thermal resistance, fold resistance and rebound resilience. Moreover, the graphic can not be damaged because of its second surface printing; The lifetime is usu different types and layouts of membrane switch, its basic function like travel, operating force, lifetime mainly depends on the type of key and material. The main types can be sorted as follows: Membrane switch with flat keys, membrane switch with embossed keys (rectangle or dome), membrane switch with a metal dome or poly dome, tactile or non-tactile, membrane switch with LCD window or embedded LED, and so on...
4: According to the tactile feeling, it can be classified into 3 types.
* Metal dome keypad: It has metal domes inside, with contacts above them, the electric loop is generated by finger operating. Advantage: 1) Good tactile feeling. 2) Long lifetime even being used in high-temperature conditions.
* Polydome keypad: Poly dome is an embossed dome in the circuitry layer of membrane switch, it is quite durable, and the travel is a little shorter than metal dome keypad. In some applications, the poly dome can be processed in the top overlay layer, this reduces the number of layers. Operating force is influenced by material thickness, diameter, and height of the keys. Advantage: 1) Quite durable. 2) It can be well-operated millions of times.
* Non-tactile keypad: No tactile feeling, for non-tactile membrane switch, it generally utilizes another way to show what the Keys' status is. Advantages: 1) Available in a big area. 2) Lowest cost among all kinds of membrane switches.
5: At TCF, we manufacture a complete line of membrane switches, our experienced design team is ready to work with you to design membrane switches to meet the unique needs of your project. 1) Graphic overlay with or without embossing. 2) Tactile with a metal dome or poly dome or non-tactile 3) Embedded LED or other surface mount components. 4) Waterproof or UV resistant. 5) Electroluminescent backlighting. 6) ESD shielding (Aluminum foil or whole layer with silver and carbon-coated). 7) Tail with or without connector (male or female pin).
Performance indicators: Electronic characteristics 1. Circuit rating: 35V (DC), 100mA, 1W 2. Contact resistance: 10Ω --500Ω (According to the trace length and materials to confirm) 3. Insulation resistance: > 100MΩ 250V DC 4. Contact bounce: ≤ 5ms Dielectric withstand: 250VRms (50-60Hz 1min) 5. Life expectancy: Flat type ≥ 500 million times, tactile type: ≥ 100 million times 6. Mechanical Properties Actuation Force: Flat type 57-284G (2-10 Oz), tactile type 170-397g (6-14 Oz) Switch stroke: Flat type 0.1-0.5mm, tactile type 0.6-1.5mm 7. Operating Temperature: -40 C - +80 C, Storage temperature: -40 C - +85 C Humidity: 40 C, 90% -95%, 240 hours