Press Fit is a solderless fastening method used in printed circuit board assembly that relies on pressure and function to join components together. In this method, the inner diameter of one part is smaller than the outer diameter of the mating part. When the two parts are forcefully pressed together, the collision of their surfaces creates a strong, tight fit that resists separation. Press Fit is efficient, cost-effective, and reliable- particularly in higher volumes of production.

Press Fit methods are utilized in various industries such as automotive, telecommunications, and industrial applications- all are industries where durability and reliability are critical. In electronics assembly applications, press fit works well to mount electrical components on circuit boards, assembling connectors and sockets, as well as securing heat sinks to electronic devices. Press Fit can provide excellent electrical conductivity between mating parts. Let’s look at the most common Press Fit methods used by electronics manufacturers.

Mechanical Press- This method uses a hydraulic or pneumatic cylinder to apply controlled force to press two parts together. Best for high-volume production, the mechanical press can accommodate a wide range of sizes and materials.

Arbor Press- An Arbor Press is a manual press that uses a lever and screw mechanism to apply pressure to the parts. Due to its manual nature, the Arbor Press method is best for protype and low volume production.

There are several benefits to using Press Fit technology for electrical assembly, and here we’ll name just a few of those benefits. Press Fit applications allow for high reliability in that robust connections are created that can withstand mechanical and thermal stress. Press Fit is cost effective as it reduces manufacturing costs by eliminating the solder process. Finally, utilizing Press Fit is an environmentally friendly option as well. Not using solder also means not using flux residue or cleaning chemicals.

Because Press Fit terminations are an ideal choice for industries with zero room for error, we will continue to see growth in the application. Whether you need a protype build or a production run, if your assembly requires Press Fit technology, give us a call. At Janco Electronics Inc. we utilize the technology to ensure we can deliver a quality assembly that will continue to perform, regardless of the environment it’s exposed to.