Flexible circuit board major attribute and cost are analytic

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  • source:KAIHER CNC Machining
1, flexible the bending sex of circuit and dependability are current and flexible circuit has: Multilayer and bosseyed, double-faced, flexible board He Gangrou sex board 4 kinds. ① is bosseyed and flexible board it is cost lowest, when not tall to electric performance demand printed board. When bosseyed wiring, ought to choose bosseyed and flexible board. Its have a chemistry to etch the electric figure that give, in flexible the electric graph layer on face of insulation base material delays Copper Foil to press. Insulation base material can be to get together acyl inferior amine, get together to benzene glycol of 2 formic acid ester, ester of fiber of fragrant acyl amine and pvc. ② is double-faced and flexible board it is to be in the two sides of insulation radical film has to etch each the electric figure that makes. Plated through hole forms link of graph of insulating material double electric access, design and use a function of the gender in order to satisfy bending. And the position that covers film to be able to protect odd, double-faced lead to indicate component to put. ③ is multilayer and flexible board be layer or 3 more of the layer bosseyed or double-faced flexible circuit lamination is together, through getting lonely L, eletroplate form plated through hole, electric access is formed between different layer. Such, do not need to use complex welder art. Multilayer circuit is in higher reliability, better hot conductibility and more convenient assembly performance side has vast functional difference. When devising overall arrangement, ought to consider the mutual impact that assembles dimension, number of plies and flexibility. Of ④ tradition firm flexible board be mix by tigidity flexible substrate selectively lamination comprises together. The construction is tight, with metallization lonely L forms electric link. If a printed board, the opposite has element, firm flexible board it is a kind of very good choice. But if all component are in the word of one side, choose double-faced and flexible board, carry a FR4 on the back to enhance material in its, meeting more economy. What ⑤ mixes a structure is flexible circuit is a kind multilayer board, electric layer is formed by different metal. A 8 layer board use FR-4 to serve as the medium of lining, use get together acyl inferior amine serves as outer medium, from advocate board 3 different way extend down-lead, every down-lead is made by different metal. Constantan alloy, copper and gold make independent catalyst respectively. The relationship that this kind of mixture structure uses in telegraphic date changeover and changeover of quantity of heat mostly and electric function compare slashing microtherm circumstance to fall, it is the means of settlement with feasible only. Can pass inside the convenient rate that designs repeatedly and totle drilling cost undertake evaluating, in order to achieve first-rate performance/price ratio. 2, flexible the economy of circuit if circuit design is relatively simple, total volume is not large, and the space is suitable, traditional inside it is a lot of cheaper to want even way want even way mostly. If circuit is complex, handle a lot of signal to perhaps have special electricity or mechanical performance demand, flexible circuit is a kind of better design choice. When the capacity that exceeds rigid circuit when applied dimension and function, flexible assembling means is most of economy. Can make on a piece of film inside the 12mil solder that takes 5mil via dish those who reach 3mil line and span is flexible circuit. Accordingly, stick outfit chip directly on film more reliable. Because do not contain a likelihood,be ion getting corrupt the fire retardant of the source. These filmy likelihoods are had defend quality, issue solidify in higher temperature, get higher vitrification temperature. Flexible the cause that material saves cost compared with rigid material was to absolve receive plug-in unit. The raw material of high cost is flexible the main reason with circuit price tall house. The price difference of raw material is bigger, the polyester of cost lowest is flexible the cost that circuit place uses raw material is rigid circuit place 1 what use raw material. 5 times; Get together high-poweredly acyl inferior amine is flexible circuit is as high as 4 times or taller. In the meantime, the flexibility of material makes its undertake automation machines processing not easily in production process, bring about crop to drop thereby; The assembly finally in the process easy occurrence blemish, these blemish include denude flexibility accessory, line to rupture. When the design does not suit to apply, this kind of circumstance is more incidental. In bend or shape below the tall stress that cause, often need to choose to enhance material or consolidate material. Although cost of its raw material is high, make trouble, but but fold, can bend and multilayer makeup function, can make integral component dimension is reduced, place decreases subsequently with material, make total assembly cost is reduced. Flexible circuit industry is in dimensions small but in swift and violent development. Law of polymer thick film is the manufacturing technology of a kind of efficient, low cost. This craft is in cheap flexible on base material, optionally the net imprints electric polymer printing ink. Its are representative flexible base material is PET. Conductor of law of polymer thick film includes silk to imprint metallic filling or carbolic pink filling. Itself of law of polymer thick film is very clean, use the SMT glue sticky agent that does not have lead, need not etch. Because its use addition technology and base material cost is low, circuit of law of polymer thick film is copper gets together acyl inferior the 1 ／ of price of amine film circuit 10; It is rigid the 2 ～ of 1 ／ of circuit board price 1 ／ 3. Law of polymer thick film applies to the Control Panel of equipment especially. On mobile telephone and other portable products, law of polymer thick film suits printed circuit advocate board the component that go up, switch and change of illume parts of an apparatus become circuit of law of polymer thick film. Save cost already, reduce the sources of energy to use up again. Say commonly, flexible the expenses that circuit compares rigid circuit really is large, cost is higher. Flexible board when be being made, a such facts must be faced below a lot of circumstances, a lot of parameter exceeded tolerancepublic errand range. Make flexible the flexibility that the difficulty of circuit depends on material. 3, flexible although the cost of circuit has the factor of afore-mentioned cost respect, but flexible constructional price is falling, become and traditional rigid circuit is conterminous close. Its are main the reason was to introduce updated data, improved manufacturing technology and modificatory finish literary composition. Present structure makes the thermal stability of the product taller, very rare material does not match. Because cupreous layer is thinner and a few updated data are OK make a narrower line, make package defter, suit to load little space more. In the past, use roller to press craft to be Copper Foil adhere on the medium of Tu Youjiao sticky agent, nowadays, need not use glue sticky agent to generate Copper Foil on medium directly. These technologies can get counting the cupreous layer with thick micron, get 3m. 1 even the narrow line with narrower width. Eliminate certain glue sticky agent is the following flexible circuit has flame retardation. Can quicken UL attestation process to be able to reduce cost further again already so. Flexible film of attack by surprise of circuit board solder and other exterior coating make flexible assemble cost to be reduced further. In coming several years, smaller, more complex and assemble cost taller flexible circuit will ask noveller method is assembled, need to increase mix flexible circuit. To flexible the challenge of circuit industry is to use its technology dominant position, keep as synchronous as demand of the computer, long-range communication, consumption and active market. Additional, flexible circuit general has main effect in turning the operation without lead. CNC Milling