Low-cost alternative to glass-to-metal feedthrough

The Bell Pin is a novel design of surface-mount feedthrough.

Thunderline Z has developed a new surface-mount feedthrough.

This revolutionary feedthrough, called a Bell Pin, has been developed to work with lightweight aluminium or brass housings, easily mounting to the bottom of the package creating true surface mountable parts with increased performance.

Rated with a VSWR of less than 1.5:1 up to 15GHz and offering true 50ohm performance, this technique is the ideal solution to costly, bulky Kovar packaging problems.

The Bell Pin SMT feedthrough is made with a gold plated Kovar base and centre conductor fired in place with low loss corning glass.

Advanced modelling techniques were used to achieve a very high 50ohm frequency range compared with Kovar SMT housings.

Hermetic reliability is exactly that of a round ferrule type feedthrough.

The device mounts easily by simply machining a through hole and a counter bore semicircle in the bottom of a package.

It's similar to machining a standard round ferrule feedthrough.

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