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Useful Advices - Need Of Flexible Circuits
In the world of electronics, necessity is the mother of all inventions, holds best applicable to the invention, evolution and development of flexible circuits in all types of electrical and electronics gadgets. The flexible circuits have just recently come of age as an interconnection technology, although it was originally developed around two decades ago.
In short, a f
In short, a f
According to USFDA, a combination product is one composed of any combination of a drug and device; biological product and device; drug and biological product
lexible circuit is "a patterned arrangement of printed wiring utilizing flexible base material with or without flexible cover layers."
Let us first understand the necessity of such circuits and the constraints posed by the earlier technology of printed circuit boards, which led to its invention.
Increased application of electronic devices such as car stereos, heart pac
Let us first understand the necessity of such circuits and the constraints posed by the earlier technology of printed circuit boards, which led to its invention.
Increased application of electronic devices such as car stereos, heart pac
; or drug, device, and biological product and fixed dose combination would include two or more combinations of drug.
Examples of combination products may in
Examples of combination products may in
emakers, disk drives, digital cameras etc., requires greater flexibility of circuit designing and installation, to maximize space constraints. Since size of all gadgets is reducing exponentially, the need arose for designing circuits, which are functionally more capable and compact in size. Therefore came up flexible circuits to replace bulky wire attachments.
Miniaturi
Miniaturi
lude drug-coated devices, drugs packaged with delivery devices in medical kits, and drugs and devices packaged separately but intended to be used together.
zation is the buzzword in the world of circuit designing. Great emphasis is there in reducing the size of the circuits without compromising on the performance. This required the engineer to improve the functionality and reliability of the circuits along with its flexibility. Flexible circuits are thus the solution to several spatial and orientation constraints earlier fa
here is enormous increase in the number of combination products entering the market in the recent years. Combination products have proven advantages but fixe
ced by fixed printed circuit boards.
How flexible circuits score over the rest?
Make –
1. A flexible circuit is made up of a flexible polymer film, which is laminated onto a thin sheet of copper that is engraved to produce a circuit pattern. The advantage of the polymer film is that the circuits can be designed and etched on both sides of the film. Another polymer ove
How flexible circuits score over the rest?
Make –
1. A flexible circuit is made up of a flexible polymer film, which is laminated onto a thin sheet of copper that is engraved to produce a circuit pattern. The advantage of the polymer film is that the circuits can be designed and etched on both sides of the film. Another polymer ove
d dose combinations are still in the process of convincing regulatory authority on their advantages over the single ingredient formulations.
Combination pro
Combination pro
rcoat is added to insulate the circuit and provide environmental protection.
2. The polymer film used for designing flexible circuits is KAPTON, which has several favourable characteristics and make it the best bet. These include heat resistance, dimensional stability, flexural capability. KAPTON's excellent thermal stability provides a better base for surface mounting
2. The polymer film used for designing flexible circuits is KAPTON, which has several favourable characteristics and make it the best bet. These include heat resistance, dimensional stability, flexural capability. KAPTON's excellent thermal stability provides a better base for surface mounting
ucts have become life saving products for the pharmaceutical companies who doesn’t have many innovative molecules in their product pipeline and have been inc
than hard boards.
3. The flat nature of such circuits offer considerable weight and space savings as compared to traditional wire harnesses. Thickness as low as 0.10mm and weight reductions of over 75% can be achieved.
Uses -
1. Flexible circuits can be used in designing several single or double-sided circuits with complex interconnections, shielding, and surface moun
3. The flat nature of such circuits offer considerable weight and space savings as compared to traditional wire harnesses. Thickness as low as 0.10mm and weight reductions of over 75% can be achieved.
Uses -
1. Flexible circuits can be used in designing several single or double-sided circuits with complex interconnections, shielding, and surface moun
easingly used in the product life cycle management. Even the companies having product patents are trying to extend their product life cycle through the combi
ted devices in a multi-layer design. These multi-layer designs can also be combined with rigid circuit boards to create a rigid/flex circuit capable of supporting devices as needed.
2. Flexible circuits also give designers a third dimension to work with. As the name itself indicates, these circuits provide flexibility with which one can bend and shape around circuits al
2. Flexible circuits also give designers a third dimension to work with. As the name itself indicates, these circuits provide flexibility with which one can bend and shape around circuits al
nation products and maximize the revenues. But the companies involved in this practice are overlooking that they are burdening the patients both economically
ong two or more planes during installation. This property can be used in complex and tight-fitting assemblies where it would be impossible to accommodate several rigid boards and harnesses.
3. Flexible circuits provide excellent means of reducing assembly time of a product due its properties of flawless integrate form and flexibility, thereby reducing number of assemble
3. Flexible circuits provide excellent means of reducing assembly time of a product due its properties of flawless integrate form and flexibility, thereby reducing number of assemble
and physically. They need to rightly judge the benefits of the combination products and they have to even look at the risks involved when combining the produ
operations and testing time.
Thus, now the time for extinction of the printed circuit boards is fast approaching whereas development of flexible circuits is about to reach its pinnacle.
TYPES OF FLEXIBLE CIRCUITS
Flexible circuit is a pattern of conductors created on a bendable film, often polymers, which acts as an insulating base material. The top is coated with an
Thus, now the time for extinction of the printed circuit boards is fast approaching whereas development of flexible circuits is about to reach its pinnacle.
TYPES OF FLEXIBLE CIRCUITS
Flexible circuit is a pattern of conductors created on a bendable film, often polymers, which acts as an insulating base material. The top is coated with an
ts. Some of the combination products were well accepted by physicians while others suffered. Companies involved in development of combination products are fi
insulating cover layer. A flexible circuit is in fact a counterpart to a rigid printed circuit board.
There are four basic types of flexible circuits, varying in degrees of complexity which can be used in different combinations to solve almost every interconnection design problem.
1. Single-sided flexible circuits –
This is the simplest of all types and provides maxi
There are four basic types of flexible circuits, varying in degrees of complexity which can be used in different combinations to solve almost every interconnection design problem.
1. Single-sided flexible circuits –
This is the simplest of all types and provides maxi
ding difficulty in defining their combination products and facing various challenges from selecting a combination to marketing it.
Following aspects would a
Following aspects would a
mum flexibility for dynamic applications. These simple circuits are also the most easily adaptable to SMT (surface mount technology), TAB (Tape Automated Bonding), and other developments in circuit technology. It is called single sided because the circuit allows access from one side only. Its applications are in the field of optical pick-up for computers, camera, camcor
dd to the challenges in developing combination products:
Which markets to tap where the combination products can do fairly well?
Which combination prod
Which markets to tap where the combination products can do fairly well?
Which combination prod
der, VCD players, vibration motors for mobile phones etc.
They are the most least expensive, and produced in the greatest volume. Single-sided circuits find maximum application in appliances where dynamism is required like in case of printers and disk drive heads.
Single layer circuit is created using a technique known as back baring or double access. This technique a
They are the most least expensive, and produced in the greatest volume. Single-sided circuits find maximum application in appliances where dynamism is required like in case of printers and disk drive heads.
Single layer circuit is created using a technique known as back baring or double access. This technique a
cts are meaningful and rational?
Which therapeutic categories to select?
Which Combinations can address unmet needs of the patients?
Do combin
Which therapeutic categories to select?
Which Combinations can address unmet needs of the patients?
Do combin
llows access to the metal conductors from both sides of the circuit. This method eliminates requirement of plate-through holes as required in multilayer circuits.
2. Double-sided flexible circuits –
As the name suggests, these circuits have two conductive layers that are usually accessible from both sides. Their main features include component assembly on both sides. A
2. Double-sided flexible circuits –
As the name suggests, these circuits have two conductive layers that are usually accessible from both sides. Their main features include component assembly on both sides. A
tions increase the patient compliance?
What would be the developing cost?
How to tackle the risks encountered during combination product developmen
What would be the developing cost?
How to tackle the risks encountered during combination product developmen
lthough, their capacity to flex reduces because of their thickness and complexity in design but their ability to interconnect between sides using plate-through hole helps to implement complex designs without compromising on flexibility.
These types of circuits are used when circuit density and layout cannot be routed on a single layer. Also used in shielding applicatio
These types of circuits are used when circuit density and layout cannot be routed on a single layer. Also used in shielding applicatio
t?
As combination products don't fit into the traditional categories of drugs, medical devices, or biological products, the USFDA is in the process of devel
As combination products don't fit into the traditional categories of drugs, medical devices, or biological products, the USFDA is in the process of devel
ns and dense surface mount assembly.
3. Multi-layer flexible circuits –
These circuits are ideal for complex, highly dense design requirements. Large numbers of conductors can be interwoven into a small package. Flexibility may be reduced somewhat, depending on the number of layers in the design. Multilayer circuits are the ideal technology to overcome design challenge
3. Multi-layer flexible circuits –
These circuits are ideal for complex, highly dense design requirements. Large numbers of conductors can be interwoven into a small package. Flexibility may be reduced somewhat, depending on the number of layers in the design. Multilayer circuits are the ideal technology to overcome design challenge
ping new procedures for reviewing their safety, efficacy and quality.
Professional from academic institutions, pharmaceutical industries, health care indust
Professional from academic institutions, pharmaceutical industries, health care indust
s like unavoidable crossovers, specific resistance requirements, elimination of crosstalk in sensitive circuits, additional shielding of ground planes, and high component density.
4. Rigid-flex circuits –
These are combination of rigid circuits and flex circuits. So it has the advantages of both. Rigid-flex circuits are a hybrid construction, consisting of rigid and fl
4. Rigid-flex circuits –
These are combination of rigid circuits and flex circuits. So it has the advantages of both. Rigid-flex circuits are a hybrid construction, consisting of rigid and fl
y and representatives from various regulatory agencies are working out to design the regulatory requirements for manufacture and sale of combination products
exible substrates laminated together into a single package and electrically interconnected by means of plate-through holes.
Rigid-flex boards are normally multilayer designs, but double-sided (two-metal layer) constructions are possible as well, and, in fact, have been selected for certain microelectronic chip-packaging applications, such as in the construction of heari
.
As there is an increasing trend of the combination products companies manufacturing such products should be able to tackle the problems involved in the de
As there is an increasing trend of the combination products companies manufacturing such products should be able to tackle the problems involved in the de
ng aids.
Such circuit types have been encouraged by military product designers, but, in recent years, this type of construction has gained popularity in the commercial world, as well.
All the above-discussed types of flexible circuit technology offer numerous viable solutions for those challenged with packaging electronic products. The technology has come of age and be
Such circuit types have been encouraged by military product designers, but, in recent years, this type of construction has gained popularity in the commercial world, as well.
All the above-discussed types of flexible circuit technology offer numerous viable solutions for those challenged with packaging electronic products. The technology has come of age and be
elopment. They need to be wiser in analyzing the market trends and the regulatory requirements.
Companies that provide selfless information through particip
Companies that provide selfless information through particip
come a strong contender in the arena of electronic packaging technologies.
Only sky is the limit in the advancement of electronics packaging with flexible circuits.
To know more about flexible circuits and rigid flexible circuits visit at http://www.fpcsales.com now
Only sky is the limit in the advancement of electronics packaging with flexible circuits.
To know more about flexible circuits and rigid flexible circuits visit at http://www.fpcsales.com now
tion in industry events and feedback to regulatory authorities would be able to face the challenges and will be successful in developing combination products
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