Kingford focus on the high-quality PCBA order demand of "Multiple varieties, medium and small batch, and short lead time".

Flexible Circuit Boards

Car dashboard soft board

Car dashboard soft board

Name: Car dashboard soft board

Layers: 2 layers

Plate ThICkness: 0.12mm

Material: double-sided non-adhesive electrolytic material

Copper Thickness: 1/2 OZ

Finish: Immersion Gold 1 microinch

Minimum line width/line spacing: 0.08mm/0.075mm

FR4 reinforcement thickness: 0.2mm

Four-layer impedance fpc circuit board

Four-layer impedance fpc circuit board

Name: Four-layer impedance FPC circuit board

ApplICation: Machine Equipment

Type: Four-layer FPC circuit board

Minimum drilling: 0.2mm

Minimum line width/line spacing: 0.1mm/0.1mm

Finished thickness: 0.25+/-0.05mm

Reinforcement: L40.25mmFR4 reinforcement

Five-layer vehicle fpc circuit board

Five-layer vehicle fpc circuit board

Five-layer vehICle FPC circuit board

Application: machine equipment,

Type: Four-layer FPC soft board

Minimum drilling: 0.2mm

Minimum line width/line spacing: 0.1mm/0.1mm

Finished thickness: 0.3+/-0.05mm

Reinforcement: 0.4mmFR4 reinforcement on the front and back

Process requirements: differential impedance of 90 ohms +/- 10% ohms

Double-sided smart wearable fpc circuit board

Double-sided smart wearable fpc circuit board

Name: Double-sided SMArt wearable FPC circuit board

BasIC Parameters: Application: Smart Watch

Type: Double-sided FPC circuit board

Line width/line spacing: 0.73mm/0.54mm

Tolerance: +/-0.03mm

Thickness: 0.13mm

Surface treatment: Immersion gold 1u

Six-layer PC impedance board

Six-layer PC impedance board

Name: Six-layer PC impedance board

ApplICation: Machine Equipment

Type: Six-layer FPC circuit board

Minimum drilling: 0.2mm

Minimum line width/line spacing: 0.1mm/0.1mm

Finished thickness: 0.25+/-0.03mm

Reinforcement: 0.25mm steel sheet reinforcement on both sides

Surface treatment: Immersion gold (sand blasting, nickel thickness 120 miles; gold thickness 2 miles)

Double-sided FPC flexible circuit board

Double-sided FPC flexible circuit board

Name: Double-sided FPC Flexible circuit board

BasIC Parameters: Application: Medical Equipment

Type: Double-sided FPC soft board

Size: 70.5*117.2mm

Minimum drilling: 0.15mm

Plate thickness: 0.1mm

Reinforcement: 0.5mm FR4 reinforcement on the back of the pad

Surface treatment: Shen Jin 1 mile

Single-sided FPC PCB

Single-sided FPC PCB

Name: Single Sided FPC PCB

BasIC Parameters: Application: Automotive

Type: Single-sided FPC circuit board

Size: 82*120.73mm

Minimum drilling: 0.2mm

Plate thickness: 0.23mm

PI reinforcement: 0.2mm

Surface treatment: Shen Jin 1 mile

Application: Connector

Single-sided FPC circuit board

Single-sided FPC circuit board

Name: Single-sided FPC circuit board

BasIC Parameters: Application: Medical Equipment

Type: single-sided FPC cable

Size: 15.5*170mm

Line width/line spacing: 0.3mm/0.2mm

Minimum drilling: 0.2mm

Plate thickness: 0.13mm

PI reinforcement: 0.225mm

ItemUsualUnusual
PCB Layers1 – 12 layers
Laminate | MaterialFlexible part: DuPont PI, Shengyi PI
Rigid part: PI/FR4
FR4, for lead-free welding
low-loss material
Halogen free
Special materials: Rogers/Arlon/Nelco/Taconic etc
PTFE
Polyimide
Delivery SizeDelivery Size570X610mm570X610mm
Production size610X640mm610X640mm
Board Thicknessthinnest0.25 mm0.20 mm
thickest5.00 mm5.50 mm
Finished board thickness tolerance±2mil(±0.04m)
Copper ThicknessInner Layer1/3-28 OZ1/3-30 OZ
Outer Layer1/7-28 OZ1/7-30 OZ
Inner LineMinimum line width50μm50μm
Minimum line spacing75μm50μm
Outer LineMinimum line width75μm50μm
Minimum line spacing75μm50μm
Min. mechanical Via hole, minimum padinner Layer0.45 mm0.40 mm
Outer Layer0.40 mm0.35 mm
Laser Via hole minimum padinner Layer0.25 mm0.23 mm
Outer Layer0.25 mm0.23 mm
Thickness to diameter ratioLBMV1:011:01
MVTH1:121:16
Min. dielectric thicknessInner core board0.025 mm0.025 mm
Prepreg0.05 mm0.05 mm
Solder resistmin. spacing60 μm40 μm
Min. Solder resist bridge75 μm65 μm
Buried capacitanceInsulation thickness: 14 μm
unit-area capacitance: 6.4 nF/in2
Breakdown voltage: >100V
Buried resistorResistance per unit area(ohms/sq.) : 25, 50, 100, 200
Impedance control accuracy10%5%
Plug holeink plughole
resin plug holes
copper slurry plughole
Min Tracing/Spacing2.5mil/2.5mil
Min. Annular Ring4mil
Min. Drilling Hole Diameter8mil(0.15mm)
Min. mechanical drilling0.15 mm0.15 mm
Laser aperture0.10-0.2 0mm0.10-0.20 mm
Min. finished via diameter6mil(0.15mm)
Tolerance of dimension3mil(0.076 mm)
Solder Mask ColorGreen, White, Blue, Black, Red, Yellow
Silkscreen ColorWhite, Black, Yellow
Surface FinishOSP
HASL(Hot Air Solder Leveling)
HASL Lead-Free
Flash Gold
ENIG (Electroless Nickle/Immersion Gold)
Immersion Tin
Immersion Silver
Special technologiesImpedance Control+/-10%
Gold fingers
Stiffener (PI/FR4)
Peelable solder mask


PCB Drilling machine

PCB Drilling machine

PCB pattern plating line

PCB pattern plating line

PCB solder mask expose machine

PCB solder mask expose machine

PCB pattern expose machine

PCB pattern expose machine

Strip film etching line

Strip film etching line

Solder mask screen silk print machine

Solder mask screen silk print machine

Solder mask scrubbing line

Solder mask scrubbing line

PCB Flying Probe Test (FPT)

PCB Flying Probe Test (FPT)

Fully automatic exposure machine

Fully automatic exposure machine

Kingford
Why choose us?
24-hour customer service
24-hour customer service

we provide 24-hour service and support, you will receive a reply to your question within 2 hours and a quotation within 24 hours.

timely delivery
timely delivery

Own PCB factory of 50,000 square meters, the monthly output can reach 60,000 square meters, no minimum PCB order requirements

Free DFM service
Free DFM service

Before the official production of the PCB, we will conduct a free DFM review service and support free Allegro, Altium, Protel, PADS, OBD, Gerber and other formats.

Quality assurance
Quality assurance

We can provide you with high frequency, high TG, high CTI, buried blind via, aluminum based PCB manufacturing, the quality is fully compliant with IPC 610-D standard, testing and quality assurance

Kingford
Our PCB&PCBA Solutions

The company has successively cooperated with more than 3,000 high-tech R&D, manufacturing and service companies around the world, with technical solutions covering medical, industrial control, artificial intelligence, Internet of Things, automotive electronics, smart home and other fields.

Kingford
Flexible Circuit Board FAQs
1.Which material is used for flexible PCB?
The main conductive material for flexible PCBs is copper or copper foil, and alloys are sometimes used, including aluminum, nickel, gold, and silver. In addition to being conductive, the conductor layer should be resistant to flex.
2.What are flex circuits used for?
Flexible circuit boards are used in cameras, personal entertainment devices, calculators or motion monitors.
3.What is a flexible PCB?
A flexible printed circuit board, also known as a flex print or flex circuit, is a special type of circuit board that you can bend into a desired shape. They are widely used in high density and high temperature applications
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