PET Membrane Switch in Medical Devices
A membrane switch is a thin, flexible, and often low-cost electronic interface that consists of multiple layers of flexible materials sandwiched together. These switches are commonly used in various electronic devices and control panels. The PET film in a PET membrane switch serves as the substrate or base layer for the switch. It is a durable and flexible material that can withstand repeated use and environmental conditions. The switch typically includes printed circuitry and conductive elements on the PET film, allowing for the creation of a touch-sensitive interface.
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Basic electrical characteristics:35V (DC), 100mA, 1W
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Contact resistance:2.10Ω-500Ω (varies according to the lead wire and the material use, generally<200Ω
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Insulation impedance:≥ 100MΩ 100V
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Medium voltage:4.250V Rms (50-60HZ, 1min), medium voltage refers to How much voltage a substance can withstand in 1 minute, if the voltage is too high will break down the substance
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Contact jitter time:≤5ms
| Basic Parameters of PET Membrane Switch | |
| Max. Panel size | 600*800mm |
| Max. Panel size (with emboss) | 400*500mm |
| Paste | silver paste, carbon paste |
| Ink color | red, black, blue, white, yellow, green, purple, etc |
| Trace width | 0.15-0.20mm |
| LED spec. | 0402, 0603, 0805, 1210 |
| Wire length | Per customer requirements |
| Waterproof class | IP65 |
| Connector | female pin, male pin |
| Metal dome types | triangle, for-legs, circle |
| Trip force (metal dome) | 280g, 340g, 450g |
| Travel (metal dome) | 0.35-0.71 |
| Diameter (metal dome) | 8.4mm, 10mm, 12.2mm |
| Surface treatment (metal dome) | gold plating, nickle plating, stainless |
| Back adhesive | DSMS, 3M, SOKEN |
| Citcuit board option | FPC, PCB, Aluminum |
| Panel material | PET, PC, TPU, PMMA |
Client Profile:
JJS Technologies is a leading manufacturer of state-of-the-art medical diagnostic equipment. They specialize in producing advanced patient monitoring systems used in hospitals and clinics worldwide. ABC Medical Technologies is known for their commitment to innovation and quality in the healthcare industry.
Project Challenges:
JJS Technologies was in the process of developing a new generation of portable patient monitoring devices. The challenge they faced was to design a user interface that could withstand frequent use, ensure easy cleaning to meet stringent hygiene standards in medical environments, and provide a seamless and intuitive experience for healthcare professionals.
Our Solutions:
When received this inquiry, our sales team suggested to use PET material as the base material, since this material has long lifecycle, good mechanical properties and very suitable to make emboss. Emboss can provide a good instruction for older people and blind persons. Combined with this suggestion, JJS engineering team updated and optimized the design files, then sent to us for evaluation. Our engineers prepared the sample drawings quickly and got the approval from customers. Then we made the samples within 2 weeks and shipped them out immediately.
Customer’s Feedback:
JJS team proceeded the incoming inspection immediately when received the samples and install to their monitor devices for verifying the function. And finally, all the testing were passed successfully and no problems happened until now. Upon the successful integration of Yu An Electronics PET film switches into their portable patient monitoring devices, ABC Medical Technologies reported significant improvements in user satisfaction and device reliability. They gave a big thumbs up to us and promised that they will give us the large quantity order to us if this kind of monitor put into the market.
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