Press Release Summary:
Gold-plated bellows contact springs ensure electrical continuity in applications where tolerance buildup, vibration, and thermal expansion become problematic with lifetime spring and force repeatability. Available with force requirements of .04 oz per .001 in. of travel, products can accommodate designs where contact with delicate component or material is required. Diameters range from .020-.245 in., and spring flexibility minimizes shock and vibration in dynamic applications.
Original Press Release:
Miniature Bellows Contact Springs
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.
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.