FLEX, RIGID-FLEX, AND RIGID PCB ASSEMBLIES Application / Design Options
GROUND PLANES AND SHIELDS
Managing EMI emissions and signal line impedance are critical aspects of flex circuit design. Effective use of ground / shield planes, appropriate connector interfaces, and matched-impedance flex circuits delivers optimal high-speed signal integrity.
Full copper shield
Cross-hatch mesh shield
Hybrid solid/mesh
Silver epoxy
Polyimide-bared for contact grounding
Connector-to-flex shielding (soldered pin insert)
Stitched vias
Black Tatsua
STRAIN RELIEF OPTIONS FOR FLEX AND RIGID-FLEX
Reinforcing “wings”
Stiffeners at critical assembly points
Reinforced solder joint with potting
Molded epoxy encapsulant
RIGID-FLEX MOUNTING POINTS FOR IMPROVED VIBRATION AND SHOCK RESISTANCE
Typical examples of rigid-flex mounting points in connectorized flex circuit assemblies
QwikConnect • July 2022
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