Rigid PCB Board

What is a Rigid PCB?

Introduction to Our Rigid PCB Products

Rigid PCBs are the core of modern electronics, made from non-flexible insulating substrates (e.g., FR4) and copper foil. Unlike flexible PCBs, they cannot be bent after formation, providing stable mechanical support and electrical connections for components. Used in over 80% of consumer electronics, their multi-layer design is an electronics industry cornerstone.

Key layers:

  • Substrate layer
  • Copper layer
  • Solder mask layer
  • Silkscreen layer

Characteristics & Types

Description Capability
Layer Count 2-30L (HDI:1+n+1; 2+n+2)
Board Thickness 0.2mm---5.0mm
Copper Weight Inner: 6oz, Outer: 4oz
Material FR4 (Kingboard,Shengyi,ILM,ITEQ,PTFE,OGERS,ARLON,ISOLA,TACONIC,Nelco)
Surface Treatment HASL, HASL Lead free, OSP,ENIG(1u"-8u"),HardGoldplatedupto50u", Immersion silver, Immersion Tin, Carbon Ink
Finished Product Size Min: 5*5mm, Max: 1500*500mm
Min Space of Drilling Holes to Conductor 0.15mm(8L); 0.2mm(8L14L);0.225mm(=24L)
Min. Conductor Width/Space 0.075/0.075mm(3/3mil)
Min Size of Solder PAD/Annulus Pad:0.4mm/0.3mm(Laser dill), Annulus:0.1mm
Profile Tolerance +/-0.15mm(Routing), +/-0.1mm(Punching)
Min Space from Conductor/Holes to Edge 0.15mm/0.2mm
Warp & Twist 0.3%-0.7%
Thickness of Peelablemask 0.2-0.5mm (Max plugging holes: 4.5mm)
Bevel angle of gold finger 20,30,45,60(Tolerance:+/-5degree)
Impedance tolerance Single ended: 50-90ohms+/-5ohm; Differential:100-155ohms+/-10%
Aspect Ratio 12:1

Technologies

14L Rigid Board
14L Rigid Board
FR4+Taconic material Hybrid board
FR4+Taconic material Hybrid board
10L HDI Blind Vias
10L HDI Blind Vias

Advantages of Rigid PCBs

Rigid PCBs offer unique benefits for high-performance applications, with core advantages summarized below:

  • Mechanical Strength & Stability: Stiff substrate (e.g., FR4 fiberglass) resists warping, vibration, and shock, securing components and electrical connections—ideal for harsh environments like automotive/industrial systems.
  • High Component Load Capacity: Supports large/heavy parts (transformers, heat sinks) without extra mounting hardware, reducing complexity and weight.
  • Effective Thermal Management: FR4 or metal-core (aluminum) substrates, plus copper layers, dissipate heat from high-power components (CPUs, LEDs), boosting product reliability and lifespan.
  • Cost-Effective Mass Production: Standardized, automated manufacturing cuts costs (3-5x cheaper than flexible PCBs), perfect for high-volume consumer electronics (smartphones, laptops).
  • Simplified Design & Layout: Fewer constraints—easy routing, no bend-radius planning, straightforward layer stackup. Accelerates prototyping and shortens time-to-market.
  • Easy Assembly & Testing: Flat, rigid surface enables accurate automated assembly (SMT/THT) and testing (AOI/ICT), improving production yields.

Application of Rigid PCBs

  • Consumer Electronics
  • Medical Equipment
  • Automotive Systems
  • Aerospace Technology
  • Industrial Automation
  • Military & Defense
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