Choosing the right type of printed circuit board (PCB) is critical in consumer electronics design—whether you're developing a compact smartphone, a rugged wearable, or an industrial power supply. At Kunshan Ruiheng Electronic Technology Co., Ltd., we specialize in both rigid and flexible PCBs to meet diverse application needs. This guide explores the key differences between rigid and flexible PCBs, their performance characteristics, and how to select the best solution for your product.
A rigid PCB is made from solid substrates like FR-4 (fiberglass-reinforced epoxy laminate). It maintains its shape under mechanical stress and is ideal for applications requiring structural stability and high thermal resistance.
Our 4-layer thick copper PCB (4 oz per layer) is engineered specifically for power electronics—offering superior current handling, thermal management, and reliability in demanding environments.
Flexible PCBs are constructed using polyimide (PI) or similar materials that allow bending, folding, and conforming to irregular shapes. They offer space-saving benefits and are widely used in portable and wearable electronics.
| Feature | Rigid PCB | Flexible PCB |
|---|---|---|
| Material | FR-4 (rigid) | Polyimide (flexible) |
| Thermal Stability | High (Tg ≥ 170°C) | Moderate (typically lower than FR-4) |
| Current Handling | Excellent (especially with 4 oz+ copper) | Good, but limited by thickness |
| Design Flexibility | Fixed geometry | Can bend, fold, fit into tight spaces |
As a trusted manufacturer serving clients in Europe, Southeast Asia, and the Middle East—including Emerson Philippines—we deliver precision-engineered PCB solutions tailored to your project’s unique requirements. Whether it's a high-current rigid board or a complex flexible design, our expertise ensures consistent quality, reliable performance, and on-time delivery.
Explore our full range of rigid and flexible PCBs designed for consumer electronics—from prototype to mass production—with technical support and compliance-ready documentation.
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thick copper etching
4 oz copper PCB
high precision PCB design
solder mask for power PCBs
0.5mm microvia drilling
230
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high-precision FPC design
2mil trace width
4-layer flexible PCB
ENIG surface finish
impedance control
115
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high precision FPC design
4 layer flexible PCB
2mil line width
0.15mm hole diameter
ENIG surface finish
124
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UL94V0
flexible circuit board materials
flame retardant FPC
rolled copper foil
automotive electronics
488
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high precision fpc design
2mil trace width
4 layer flexible pcb
enig surface finish
ruiheng pcb
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