Multilayer FPC

Multilayer FPC is combined with 3 or more layers of flex circuits,Website:, generally the layers are interconnected by Plated Through Holes (PTH). The layers of the multilayer flex circuit may or may not be continuously laminated together throughout the construction with the obvious exception of the areas occupied by plated through-holes. The practice of discontinuous lamination is common in cases where maximum flexibility is required. This is accomplished by leaving un-bonded the areas where flexing or bending is to occur.4 Layer FPC Basic structure:Base MaterialPolyimide film25μm(1mil)、12.5μm(1/2mil)Cu12μm(1/3oz)、35μm(1oz)、17.5μm(1/2oz)CoverlayPolyimide film25μm(1mil)、12.5μm(1/2mil)ResistSurface finishImmersion Gold, OSPKey Specification     Layer Count3~8MaterialPolyimide, PI, Kapton, DuPont Kapton, PET      Stiffener: FR-4, PI, Stainless Steel        PI Supplier: DuPont, ShengYi, Taiflex…Finished Thickness0.2~2.0mm(with stiffener)Finished Outer Cu ThicknessHOZ, 1OZ, 2OZ, ED or RA copper availableFinished Inner Cu ThicknessHOZ, 1OZ, 2OZ, ED or RA copper availableSurface FinishImmersion Gold, OSPCoverlayOrange, White, Black, Gray; alternative Green/ Red/ Blue soldermaskSilkscreenWhite, BlackPanel Size250x720mm(max)Attention: "These are the basic specifications we gonna to need for your Printed Circuit Board fabrication, if you need a quick quote or going to order soon, to save time please kindly provide all the fabrication details to us, of course if there were any other special requirements or details out of this specification, please also comment so we can consider it in our quotation."           --From Union Circuits Engineering dept.Product DetailsMOQ1 PieceProduction Lead Time6~15 Working Days Quick turn, 10~20 Working Days mass productionMin. Drill Hole Size0.2mmMin. Trace Width/Spacing2.5/2.5milData FormatGerber RS-274-D/X, .pcb, .pcbdoc, .cam, ODB++, CADE-Test100% E-test(cost included in the Unit Price, NO extra charge)CertificationsUL, CUL, ISO9000, ISO14001, TS16949.StandardIPC-6013 Class 2(default), Class 3 (base on request)ApplicationAutomotive, Cellular , wearable devices, printer, GPS module…PackingInner vacuum + foam, Outer carton boxShippingDHL(default), UPS, TNT, FedEx, EXW, FCA/FOB HongKong, By SeaPaymentT/T, PayPal, Western Union (USD, EUR)Union Circuits is a Professional Multilayer FPC Manufacturer located in Shenzhen, China, we focus on Quick turn, Prototype, small to medium volume FPC production on the market for years, currently we are serving more than 60 countries customers in different industries with perfect quality and competitive prices, if you are trying to find a reliable offshore FPC supplier or going to switch new suppliers you are worth to try us, welcome customers from all over the world to inquiry and order.                 FPC advantages:1.Tightly assembled electronic packages, where electrical connections are required in 3 axes, such as cameras (static application).2.Electrical connections where the assembly is required to flex during its normal use, such as folding cell (dynamic application).3.Electrical connections between sub-assemblies to replace wire harnesses, which are heavier and bulkier, such as in cars, rockets and satellites4.Electrical connections where board thickness or space constraints are driving factors.ApplicationsFlex circuits are often used as connectors in various applications where flexibility, space savings, or production constraints limit the serviceability of rigid circuit boards or hand wiring. In LCD fabrication, glass is used as a substrate. If thin flexible plastic or metal foil is used as the substrate instead, the entire system can be flexible, as the film deposited on top of the substrate is usually very thin, on the order of a few micrometers.Organic light-emitting diodes (OLEDs) are normally used instead of a back-light for flexible displays, making a flexible organic light-emitting diode display.Most flexible circuits are passive wiring structures that are used to interconnect electronic components such as integrated circuits, resistor, capacitors and the like, however some are used only for making interconnections between other electronic assemblies either directly or by means of connectors.In the automotive field, flexible circuits are used in instrument panels, under-hood controls, circuits to be concealed within the headliner of the cabin, and in ABS systems. In computer peripherals flexible circuits are used on the moving print head of printers, and to connect signals to the moving arm carrying the read/write heads of disk drives. Consumer electronics devices make use of flexible circuits in cameras, personal entertainment devices, calculators, or exercise monitors.Flexible circuits are found in industrial and medical devices where many interconnections are required in a compact package. Cellular teles are another widespread example of flexible circuits.Flexible solar cells have been developed for powering satellites. These cells are lightweight, can be rolled up for launch, and are easily deployable, making them a good match for the application. They can also be sewn into backpacks or outerwear.


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