Intro to Board to Board Connector Series Part 7

Plastic Insulators

Plastic insulators are fundamental to board-to-board connectors. They are used to hold the conductors, or pins, together to create the desire shapes of the connectors. Different insulators also perform differently regarding to the weatherability, chemical resistance, and strength.

Common Insulators

Polybutylene Terephthalate (PBT)

• Excellent dielectric strength under high temperature (230°C) and high humidity
• Great formability with low shrinkage rate
• Low flammability
• Halogen-free available
• Great impact strength

Acrylonitrile butadiene styrene (ABS)

• Good impact toughness even at low temperature
• Great wear resistance against rough surface
• Shiny appearance
• Economical

Insulators for High temperature(SMT-Grade).

High Performance Polyamide (PA 46 , PA 6T)

• Temperature rating, PA46 290°C, PA6T 320°C
• Good elongation
• Great wear resistance.
• High rigidity, even at high temperature.
• Halogen-free available

Liquid-Crystal Polymer (LCP)

• Temperature rating between 290-320°C
• Great dimensional stability and weatherability.
• Highly inert.
• Great moldability, popular for designs require high precision.
• low flammability (UL 94V-0)
• Halogen-free available