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Flexible printed circuit boards are used to make interconnections in systems that have no room for rigid PC boards. Flex circuits are bendable and lightweight and are used in applications where the circuit is bent or flexed in two or more planes in the assembly or installation process.

Rigid-flex circuits are a hybrid construction flex circuit consisting of rigid and flexible substrates which are laminated together into a single structure.The layers of a rigid flex are also normally electrically interconnected by means of plated through holes. Rigid-flex boards are normally multilayer structures.

A single sided flexible circuit construction with a polyimide cover film laminated to copper allowing access from one side only.

Application of sigle sided flex circuits:

Optical pick-up for a/v & computer ( or cdp & dvdp)
Camera
Capstan motor for camcoder & vcr
Vibration motor for mobile phone
Stepping motor.

Parameter of flexible circuits:
Board thickness:0.2-6.5mm
Minimum conductor spacing/width:0.1/0.1mm
Panel size: max-250*400 -12288;
Drilling diameter size: max diameter -6.5mm; min. Diameter-0.25mm
Base material cupper thickness: max-0.070mm, min-0.012mm
Insulate layer thickness: max-0.05mm (pi thickness) min-0.0125mm (pi thickness)
Electronic plating sn/pb thickness:3um --- 20um -12288;
Electronic plating au thickness: above0.05um -12288;
Chemical immersion ni/au thickness:0.05um --- 0.1um -12288;
Electronic plating sn thickness:3um --- 20um -12288;
Etching width & space: s:3mil (0.076mm) d f m:4mil (0.100mm) .

Please contact us now for more information about flexible circuits & flexible printed circuits.

Industry-specific attributes
CAS No. 7440-22-4
Other attributes
Place of Origin Guangdong, China
Other Names Flexible circuit silver paste
Grade Standard Industrial Grade, Electron Grade
Application Flexible circuit
Brand Name LONGXIN
Model Number LX-LMP4101
Solid content(%) 53±1.0
Viscosity (dPa.s) 130±50
Fineness(m) 9
Square resistance(m/sq/mil) 10
Curing conditions 1st:Tunnel furnace: 135*6 min,2nd:Oven: 135*40 min
Process recommendation Screen printing, polyester mesh or stainless steel mesh (250 mesh)

General specification for Flexible PCB
Because of the advantages, such as: cost, space, and weight savings, flexible and Rigid-Flex-circuit board shave for some projects, they are used ever more frequently.
Additionally, flex circuits can be screen printed silver circuits on polyester. Flexible electronic assemblies may be manufactured using identical components used for rigid printed circuit boards, allowing the board to conform to a desired shape, or to flex during its use. Multi FCB can produce your flexible circuit boards with the highest quality, either as prototypes or in series.
For additional technical questions about flexible circuit boards, please contact us.

Graphic overlays

Industry-specific attributes
CAS No. 7440-22-4
Other attributes
Place of Origin Guangdong, China
Other Names Flexible circuit silver paste
Grade Standard Industrial Grade, Electron Grade
Application Flexible circuit
Brand Name LONGXIN
Model Number LX-LMP4101
Solid content(%) 53±1.0
Viscosity (dPa.s) 130±50
Fineness(m) 9
Square resistance(m/sq/mil) 10
Curing conditions 1st:Tunnel furnace: 135*6 min,2nd:Oven: 135*40 min
Process recommendation Screen printing, polyester mesh or stainless steel mesh (250 mesh)

Flexible printed circuit board (FPC)

General specification:
Circuit sizes:
Single sided up to 22" x 28" - (558. 8mm x 711. 2mm)
Double sided up to 16" x 22" - (406. 4mm x 588. 8mm)
Maxi-flex up to 10" x 16 feet - (254mm x 4877. 0mm)

Hole size:
Non-plated thru holes. 010" (. 25mm) min. Drilled hole size. Tolerance +/-. 0015" (. 038mm)
Plated thru holes. 010" (. 25mm) min. Drilled hole size. Tolerance +/-. 003" (. 076mm)
(smaller holes can be manufactured. )

Line width and spacing:
. 005" (. 12mm) minimum line
. 005" (. 12mm) minimum spacing
(finer lines can be manufactured. )

Conductor to edge of circuit/blanking:
Soft tooling outline dimensions +/-. 010" (. 25mm)
Hard tooling outline dimensions +/-. 003" (. 076mm)

Drill position:
Tolerance of +/-. 003" (. 076mm)

Layers:
Up to 6 conductor layers
Shielding layer - copper and silver
Pads on plating layer


Standard export carton

Two- to four-layer rigid-flex pcbs with fr4/hdi-pda laminate material

Key specifications/special features:

Number of layers: 2 to 4
Thickness: 12 mil only
Thermal performance: 30% better conduction than standard 0.062-inch fr4
New fr4 technology from photo circuit
New thermally conductive adhesive technology
Suitable for body through power train controller application


Standard export carton

Explore high-volume flex manufacturing with our R2R SMT-Flex�® technology. We offer top-quality automated assembly for your needs. Contact us for more details.

FPC PCB flexible printed circuit board

brand new Eaton KD3350 Series 3 Industrial Circuit Breaker with 3 poles and a rating of 350A at 600V. It is a premium quality product from a reputable brand and is designed for use in industrial automation and motion control applications. The breaker is compatible with the Automate controller platform and is perfect for use in PLC processors

Application:Home Appliances,Communication equipment,computer keyboard Keypad Button Material:PET,PC,Silicone,Acrylic Design:CAD/AI/CDR format Certification:ROHS,REACH,CE,IS Test:100%QC Material:PET,PC,Silicone,Acryliy Color:According to pantone color number Back-adhesive:3M467,3M468,or others Factory Experience:16 years customized factory.

Membrane switch circuit layer using FPC (flexible PCB).The products are mainly used in medical devices function keyboard, feel good, powerful.

Membrane switch

Advantage:
1. Pleasing in appearance, innovative and
2. Small size, the thickness of thin, light weight, more conducive to the notebook computer keyboard light, thin, short, small and high-intelligent direction.
3. Moisture-proof, dust-proof, anti-oil pollution and harmful gases, sealing strong earthquake acid and basic resistance.
4. Long life, bending resistance.

Membrane switches

1) maximum circuit rating: 35v dc, 100ma, 1W
2) contact resistance: 10 - 500ª+ (varied from the trace length and material)
3) insulation resistance: 100mª+ at 100v
4) dielectric withstand: 250v rms (50 - 60hz per min)
5) contact bounce: 5ms or less
6) actuation force: a) flat type 60 - 300g (2 - 10oz.) b) tactile type: 150 - 400g (6 - 14oz.) 7) switch stroke: a) flat type 0.1 - 0.5mm b) tactile type: 0.6 - 1.5mm
8) life expectancy: a) flat type: 5, 000, 000 closures or more b) tactile type: 1, 000, 000 closures or more
9) surface hardness: 3h or more
10) operating temperature: -40 ~ +80ípc
11) storage temperature: -40 ~ +85ípc
12) humidity: 90 - 95% (40ípc) for 240 hours

1 polycarbonate, polyester
2 multi-color graphic overlays
3 engineered adhesives
4 metal domes or polydomes
Mechanical characteristics
1 actuation force, nontactile: 4oz. To 16oz.
2 actuation force, tactile: 10oz. To 16oz. Typical
Switch stack-up thickness: available for custom specification
Electrical feature
1 current rating: 50 ma at 30 vdc
2 actuations, actile: 1 million minimum at maximum rated load
3 actuations, nontactile: 5 million minimum at maximum rated load
4 switch contact bounce, tactile: 10 milliseconds max
5 switch contact bounce, nontactile: 5 milliseconds max
6 termination contact resistance: 100 ohms max, loop
7 insulation resistance: 1 gohm win at 100 vdc
Environmental condition
1 operation temperature: -20 degree c to 70degree c
2 storage temperature: -45 degree c to 85degree c
3 humidity: to 95% (switch fully sealed to environment)

Silicone rubber keypads

With epoxy cap and plastic electroplating
Available in epoxy coating or paint-sprayed, with colored keys upon request
Mechanical properties:
Operating temperature: -40 t180 degrees celsius
Storage temperature: -55 t250 degrees celsius
Operating life: 5 x 105 t3 x 107 cycles
Actuation force: 20g t500g
Key stroke: 0.3mm t5mm
Electrical properties:
Contact resistance: < 100 ohms
Insulation resistance: > 10m ohms
Contact bounce: < 20ms
Insulation breakdown: 26kv/mm

1. Min. Trace width : 0.075mm
2. Min. Space between trace: 0.075mm
3. Min. Hole size: 0.25mm
4. Min thickness:
A) single sided: 0.07mm
B) double sided: 0.13mm
5. Dimension tolerance:
A)+/-0.05mm (metal tooling)
B)+/-0.10mm (cutting tooling)
6. Base materials: pi, pet
7. Conductor (copper thickness): 0.5oz., 10oz. And 20oz. (ra and ed copper)
8. Cover-layer: pi and pet (solder mask printing is available)
9. Adhesive material: epoxy, acrylic and polyester
10. Stiffener materials: fr-4, mylar and polyamide
11. Surface finishes: flash gold plating, selective gold plating and solder plating

2 layers rigid-flex pcb
Minimum line width/space: 8mils
Surface finish: immersion gold
Board thickness: 0.50mm
Minimum drilled hole diameter: 8mils
Copper thickness: 0.5oz
Special process : 0.10mm flexible pcb inside


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