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Miniature Bellows Contact Springs from Servometer

By Patrick Curran | July 6, 2009

Servometer® / PMG, LLC miniature, flexible, gold plated bellows contact springs insure reliable electrical continuity in applications where tolerance buildup, vibration, and thermal expansion become a problem with lifetime spring and force repeatability. Their spring flexibility allows them to minimize shock and vibration in dynamic applications.

servometer-min-bellows.jpg

Due to their very low spring-rates, force requirements of .04 oz. (1.13 Gms) per .001 inch of travel are available. This allows designs to be made where contact with a delicate component or material is required.

Manufactured in diameters from .020 inch (.5 mm) to .245 inch (6.2 mm) from electrodeposited nickel alloy, and gold plated to ASTM B 488-01 to enhance their conductivity, these bellows contact springs have extremely low DC resistance with a minimum of insertion loss, and are non-permeable to dust, dirt or moisture due to their non-porous, seamless design.

Because Servometer bellows are made by electrodepositon and can be made from Nickel, Copper, Gold or Silver for maximum performance, their conductivity at high frequencies from the Giga-Hertz range and up is superior to similar sized spring loaded test pins. They have a low loss of only .20 dB (shorter) to 45 dB (longer) at 6 GHz with a total bandwidth much higher.

Available from stock and rated for a maximum current of 4 amps, Servometer contacts can be safely used up to 260° F and maintain their full spring qualities. There is no low temperature limit. Servometer bellows are presently operating at temperature of -423° F below zero.

If one of our standard contacts does not meet a customer’s requirements, our design engineers will design a custom contact to the customer’s unique specifications.

Servometer® / PMG, LLC
www.servometer.com

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Search Fastener Engineering

  • Home
  • Fasteners
    • Nuts, bolts, rivets
    • Screws
    • Spacers + standoffs
    • Pins
    • Uclips + U-nuts
    • Eyebolts, rod ends, etc.
    • Thread repair kits + lockers
  • Adhesives
  • Springs
    • Compression
    • Constant force
    • Spring clip
    • Torsion springs
  • Washers / Spacers
    • Gaskets and Seals
  • Tools
  • Materials
  • Resources
    • Digital Issues
    • Leadership in Engineering
    • Suppliers
    • Video
  • Women in Engineering