U-Shape FPC PCB, 0.2mm Thick, 60×30mm Connector Board is a custom-shaped flexible printed circuit designed for compact internal interconnect between rigid modules. The U-shaped geometry routes signal traces around obstacles or through narrow enclosure gaps, while the 0.2mm total thickness keeps the assembly slim and lightweight. Gold-plated connector pads ensure reliable mating for repeated plugging in consumer, medical and industrial electronic devices.
1. Specifications
- Board Type: Flexible Printed Circuit (FPC / Flexible PCB)
- Shape: U-shaped custom outline, cut by die punch or CNC routing
- Overall Size: 60mm × 30mm, customizable per customer drawing
- Total Thickness: 0.2mm ± 0.02mm finished flex thickness
- Base Material: Polyimide (PI) film, amber / orange standard
- Coverlay: PI film with adhesive on both sides of copper circuit
- Copper Foil: 1oz (35μm) rolled annealed copper, suitable for flexing
- Copper Structure: Single-sided FPC standard; double-sided optional
- Minimum Trace / Space: 0.05mm / 0.05mm
- Minimum Contact Pad Width: 0.3mm
- Conductor Width Tolerance: ±0.02mm
- Surface Finish: ENIG immersion gold on connector pads; OSP optional
- Gold Plating Thickness: 0.05μm – 0.1μm on mating contact area
- Stiffener: PI / FR-3 / PET stiffener attached under connector section (optional)
- Static Bend Radius: ≥6× total flex thickness
- Dynamic Bend Radius: ≥10× total flex thickness
- Operating Temperature: -40°C to +125°C
- Insulation Resistance: ≥1000 MΩ
- Breakdown Voltage: ≥500V AC between adjacent traces
- Certification: UL 94 V-0, RoHS 2.0, REACH
- Quality Test: 100% continuity / open short test, AOI trace inspection, foldability sample test
2. Design & Performance Characteristics
The U-Shape FPC PCB follows a bent geometric layout that allows the flexible circuit to turn 90 degrees around internal structural posts, display frames, battery compartments or connector housings. Unlike a straight FPC strip, the U-shape provides two parallel routing arms connected by a curved bend section, saving horizontal space inside narrow equipment enclosures.
At 0.2mm total thickness, this FPC remains slim enough to fit inside thin mobile devices, display modules and wearable housings without adding noticeable bulk. Rolled annealed copper foil maintains ductility after repeated bending, preventing trace cracking in hinge or flex zones. The polyimide base film provides stable dielectric properties, heat resistance and chemical resistance under long-term operation.
The 60×30mm connector board section contains gold-plated contact pads aligned to standard board-to-board connectors. An optional stiffener layer reinforces this connector area so the FPC does not flex near the mating point, protecting solder joints and pad peel strength. Bend areas are kept free of pads, holes and stiffener to keep mechanical stress away from electrical contacts.
Electrical performance includes stable signal transmission for low-speed control signals, LED drive lines, sensor connections and display ribbon signals. For high-speed differential pairs, controlled impedance can be designed on double-sided FPC versions with reference copper and ground coverlay shielding.
3. Manufacturing & Process Advantages
- Custom U-shaped die cutting: precision die punch or CNC routing produces clean outline without burrs on the flex edge
- Thin 0.2mm construction: layered PI film, adhesive, copper and coverlay thicknesses are controlled to consistent finished thickness across the batch
- Rolled annealed copper: softer than standard electrodeposited copper, better fatigue life for static and dynamic bending
- Selective ENIG gold plating: gold applied only to connector fingers, balancing contact reliability and cost
- Stiffener lamination: reinforced connector area prevents flex near mating interface, reduces connector pad lifting risk
- Precision trace etching: fine line capability down to 0.05mm supports dense signal routing inside the narrow U arms
- Panelized production: multiple FPC units on one panel for efficient batch assembly and lower unit cost
- DFM review: our engineering team checks bend radius, pad position, connector orientation and keep-out zones before production
- 100% electrical testing: every FPC unit passes continuity, open and short circuit inspection before shipment
- Both small prototype lots and volume connector board production are supported with stable repeatability
4. Typical Applications
- Internal display interconnect boards for smartphones, tablets and small monitors
- LCD / OLED ribbon cables and touch panel connector boards
- Camera module internal FPC cables and sensor interconnect boards
- Wearable devices: smartwatch straps, fitness tracker internal circuits
- Medical portable instruments, handheld diagnostic scanners and patient monitor flex cables
- Automotive interior display, steering wheel control and mirror sensor interconnect boards
- Industrial sensor modules, small control panel flex boards and instrument internal cables
- Printer, scanner and copier hinge flex cables
- Portable communication terminals, IoT device internal connectors and compact consumer electronics assemblies
5. About Us
We are a professional PCB manufacturer based in China, specializing in OEM/ODM custom printed circuit board and flexible circuit production for global customers. With years of manufacturing experience, we provide one-stop PCB solutions covering standard FR-4 rigid boards, aluminum MCPCBs, HDI boards, high-frequency boards, ceramic substrates, rigid-flex boards and single-layer / double-layer FPC flexible circuits.
For inquiries, please send your Gerber files, mechanical drawings and connector requirements to our sales team. We will provide an engineering review and a quick quotation within 24 hours.
