Leading Flexible PCB Manufacturer

High-Quality Custom Flex Circuits & Rigid-Flex Solutions for Consumer Electronics, Automotive, Medical & IoT

20+ Years Flex PCB Expertise

ISO 9001 & IPC-A-600 Certified

5 Day Sample Delivery | Full Volume Production

Our Flexible PCB Projects

Real-world solutions delivering innovation across industries. Explore how we've transformed complex requirements into reliable, market-ready flexible circuits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Tüketici Elektroniği

Multi-Layer Folding Display Flex

6-layer flex circuit for flagship foldable phone display connection with 3mm bend radius.

Specs: 6-layer PI, 0.1mm lines, 50µm vias

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Otomotiv

Automotive Dashboard Flex-Rigid

Rigid-flex assembly connecting dashboard cluster to main harness with integrated connectors.

Specs: 4-layer flex + 2-layer rigid, AEC-Q200

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Tüketici Elektroniği

Camera Sensor Flex Connector

Compact 2-layer flex circuit with 0.075mm traces for high-density camera module connection.

Specs: 2-layer PI, 0.075/0.075mm lines, 30mm length

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Medical

Medical Diagnostic Sensor Flex

Single-layer medical-grade flex circuit with biocompatible materials and sterilization compatibility.

Specs: 1-layer medical PI, ISO 13485, sterilization rated

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Wearables

Wearable Band Flex Circuit

Ultra-compact dual-layer flex for smartwatch band with 2mm minimum bend radius.

Specs: 2-layer, 2mm bend radius, 15x80mm, ultra-thin

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

IoT / Industrial

Industrial Sensor Array Flex

4-layer flex circuit for distributed sensor network with impedance control and shielding.

Specs: 4-layer, 50Ω controlled, EMI shielding

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Lighting

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

Specs: cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Tüketici Elektroniği

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

Specs: cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Uzay

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

Specs: cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

Specs: cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Prototipleme

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

Specs: cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Complex Flex-Rigid Subsystem

Custom 5-layer flex + 4-layer rigid assembly with integrated connectors and mechanical supports.

Specs: 9-layer total, multiple connector types, custom shape

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Hakkında YC PCBs

Founded in 2001, YC PCBs is a leading manufacturer of flexible and rigid-flex circuit boards in Asia-Pacific. With over two decades of specialized experience in flex PCB manufacturing, we've delivered billions of units to global leaders in consumer electronics, automotive, medical, and IoT industries.

Our expertise spans single/dual/multilayer flexible circuits, with capabilities in complex geometries, high-density designs, advanced materials (polyimide, FCCL, specialty substrates), and precision manufacturing with finest lines/spaces and tolerances. We combine cutting-edge manufacturing technology with hands-on engineering support, ensuring your designs not only meet specs but exceed reliability expectations.

20+

Years Industry Experience

500+

Active Global Clients

Learn More About Us →

Customer Gallery

Flexible PCB Capabilities & Specifications

Complete manufacturing range covering single-layer to multi-layer flex circuits with precision engineering

PCB Layers

Single-layer flex
Double-layer flex
Multi-layer (up to 8L)
Rigid-flex combinations

Precision & Tolerances

Line width: 0.075mm min
Line spacing: 0.075mm min
Hole diameter: ±0.05mm
HDI capable

Bend Radius

Minimum: 3mm radius
Dynamic flex rated
Static and dynamic
100K+ bend cycles

Materials & Substrates

Polyimide (PI)
PET & specialty polymers
PTFE (high frequency)
LCP & advanced options

Copper Weight & Plating

½ oz to 3 oz copper
Gold, silver, tin plating
HASL & OSP finishes
Custom thickness

Special Features

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Tüketici Elektroniği

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Otomotiv

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Tıbbi Cihazlar

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Flex circuits for portable medical devices, implantables, and diagnostic equipment

Industrial & IoT

Industrial Controls

Sensor arrays, controller interconnects, and harsh-environment flex solutions

LED Strip Solutions

LED Strips

Flexible circuit solutions for LED strip lights used in architectural lighting, signage, retail displays, and decorative illumination

Trusted by Leading Brands Worldwide

OUR GLOBAL PARTNERS

CUSTOMER SUCCESS STORIES

Tüketici Elektroniği

Leading Smartphone Manufacturer

"YC PCBs delivered complex 6-layer flexible circuits for our foldable smartphone with exceptional precision. Their DFM support helped us reduce design iterations by 40% and hit our tight market timeline."

★★★★★

5/5 - Reliability & Speed

Otomotiv Elektroniği

Tier-1 Automotive Supplier

"Their rigid-flex PCBs for dashboard integration passed all automotive reliability standards. The technical team's support through environmental testing was invaluable—true partnership, not just supply."

★★★★★

5/5 - Technical Excellence

Tıbbi Cihazlar

Portable Diagnostics Company

"For our FDA-regulated portable diagnostic device, we needed flex circuits with hospital-grade reliability. YC's quality documentation, bend-cycle testing, and rapid sampling made all the difference in our approvals."

★★★★★

5/5 - Compliance & Quality

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Smart Wearable Startup

"As a startup, we needed flexible PCB support for volumes from 5K to 50K. YC scaled with us seamlessly, maintained quality at every volume point, and helped us stay under budget through design optimization."

★★★★★

5/5 - Scalability & Cost Control

Endüstriyel Kontrol

Factory Automation Provider

"High-temperature flex circuits for harsh factory environments—YC delivered with PI-based substrates rated to 260°C and provided accelerated thermal cycling validation. Their expertise saved us months of R&D."

★★★★★

5/5 - Specialized Solutions

Lighting Solutions

Smart LED Module Manufacturer

"Their LED-compatible flex PCBs with thermal vias improved heat dissipation by 35%, allowing us to reduce component count and final product cost. Exceptional engineering collaboration from day one."

★★★★★

5/5 - Performance Optimization

500+

Global Clients

Across 40+ countries

15B+

Units Shipped

Annually in production

99.2%

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

24/7

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Chemical Etching

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

Surface Finish & Coverlay Application

Coverlay is applied to protect circuits and enhance flexibility. Surface finishes such as ENIG, OSP, or immersion tin are applied to ensure solderability and oxidation resistance..

Typical Duration: 6-10 hours | Quality Checkpoint: ✓

Electrical & Functional Testing

100% of boards undergo electrical continuity testing, insulation resistance testing, and functional verification. Advanced testers catch any defects before shipment.

Typical Duration: 4-8 hours | Quality Checkpoint: ✓ CRITICAL

Final Inspection & Packaging

Final visual inspection for defects, solder drips, or cosmetic issues. Boards are carefully packaged in anti-static materials and prepared for shipment with full documentation.

Typical Duration: 4-6 hours | Quality Checkpoint: ✓

50-80 Hours

Typical Manufacturing Cycle

(From raw material to final inspection)

9 Quality Checkpoints

Critical Control Points

(Ensuring zero defects throughout)

< 0.1%

Defect Rate Target

(Industry-leading quality standard)

Why Leading Brands Choose YC PCBs

20+ Years Expertise

Specialized in flexible circuit manufacturing since founding

ISO 9001 & IPC Certified

Full quality assurance & international standards compliance

500+ Global Clients

Trusted by brands across electronics, automotive & medical

3-5 Day Samples

Fast turnaround from design approval to prototype delivery

Advanced Testing Lab

Complete reliability & quality verification for peace of mind

24/7 Technical Support

Dedicated engineering team ready to support your project

TECHNICAL EDUCATION

The Complete Guide to Flexible PCB Manufacturing

Everything you need to know about flexible circuit design, production, reliability, and supplier selection—from fundamentals to advanced optimization

What Is Flexible PCB?

Flexible Printed Circuit Boards (Flex PCB) are electrical circuits printed on thin, flexible substrates—typically polyimide films—that can bend, fold, and conform to three-dimensional shapes without losing electrical functionality.

Key Advantages Over Rigid PCB:

✓ Space Savings: cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
✓ cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
✓ cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
✓ cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
✓ cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

1cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

2cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

3Multi-Layer Flex PCB (3–8+ Layers)

Complex stack-ups for high-density signal routing, ground planes, and power distribution. Supports HDI (High-Density Interconnect) with micro-vias.

Applications: Smartphone foldables, advanced wearables, medical instrumentation | cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits $3–$15+ per unit

Note: YC PCBs supports up to 8 layers. Multi-layer flex requires precise layer alignment, controlled impedance, and specialized testing.

4Rigid-Flex PCB (Flex + Rigid Hybrid)

Combines flexible polyimide sections with rigid FR-4 sections in a single board. Ideal for applications requiring both bendable routing and rigid mounting zones.

Best for: Automotive dashboards, camera modules with connectors, medical probes

Advantage: Reduces assembly steps, improves vibration resistance, and simplifies 3D routing.

Material Comparison

Material	Temp Range	Esneklik	Maliyet	Common Use
Polyimide (PI)	-40 to +260°C	Mükemmel	$	Smartphones, automotive, industrial
Polyester (PET)	-20 to +120°C	Very Good	$	Consumer electronics, cost-sensitive
PTFE (Teflon®)	-60 to +200°C	Good	$$	High-frequency, aerospace
LCP (Liquid Crystal Polymer)	-50 to +240°C	Good	$$+	Ultra-high frequency, millimeter-wave

Recommendation: For most applications, PI substrate offers the best balance of flexibility, thermal stability, and cost. Only upgrade to PTFE or LCP if your application has specific high-frequency or extreme-temperature requirements.

Design Essentials for Flexible PCB

Most Common Design Mistakes

• Designing traces that don't follow the natural bend axis (causes stress concentration)
• Placing via-rich zones in areas that will be flexed repeatedly
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits Mount components only in rigid or low-flex zones; use adhesive backing if necessary Hole size transitions: Avoid sharp transitions in trace width to prevent stress concentration Solder mask coverage: Ensure full coverage in flex areas to prevent oxidation and corrosion Bend radius zones: Mark intended bend locations and minimum radii clearly on drawings

Pro Tip: DFM Review Before Manufacturing

Submit your design early for our free DFM (Design for Manufacturability) review. We'll identify potential issues, suggest optimizations to reduce cost, and confirm bend radius feasibility—typically within 24 hours. This single step saves weeks and thousands in failed prototypes.

Reliability & Testing Standards

How Many Times Can a Flex PCB Bend?

This depends on three factors: substrate material, thickness, and trace design. Typical ranges:

Light Flex (< 5mm radius)

10,000+

cycles before failure

Moderate Flex (5–10mm radius)

100,000+

cycles before failure

Heavy Flex (> 10mm radius)

1M+

cycles before failure

Note: These are typical ranges. YC PCBs conducts accelerated bend-cycle testing on all flex designs and provides detailed lifespan predictions.

Our Quality & Testing Standards

IPC-A-600 (Acceptability of Electronic Assemblies)

Industry standard for visual inspection criteria. All our flex PCBs pass Class 2 (commercial) or Class 3 (aerospace/medical) inspection.

IEC 61701 & IEC 60068 (Environmental Testing)

Temperature cycling (-40 to +85°C, 10+ cycles), humidity testing, salt-spray corrosion resistance.

AEC-Q200 (Automotive Reliability)

For automotive-grade flex PCBs; includes extended thermal cycling, mechanical shock, and vibration testing.

Flex-Specific Bend Cycle Testing

Custom testing to your minimum bend radius; we validate electrical continuity after 10K, 100K, and 1M cycles.

Cross-Section Analysis (Destructive Testing)

Microscopic inspection of via plating quality, layer adhesion, and copper integrity.

Failure Mode & Root Cause Analysis (FMEA)

Common failure modes and how we prevent them:

Copper trace cracking: Mitigated by optimized trace geometry, proper bend radius, and annealed copper
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits