Sheet absorbers work for most applications, but not all enclosure geometries are flat rectangles. Compound curves, shielded antenna feeds with internal cavities, automotive radar housings with non-planar geometry, and high-volume production lines that can’t economically apply die-cut sheets all require a different delivery method. Dispensable absorbers solve this by replacing the sheet with a liquid paste: carbonyl iron loaded into a silicone base, dispensed by syringe or automated equipment, then cured in place. Once cured, the material functions identically to a magnetic elastomer sheet through the same loss mechanism. The difference is application, not physics.

The AC-001 Series is most commonly deployed in 24 GHz automotive radar module assembly where automated dispensing replaces manual sheet placement, EV battery housings where complex internal geometry and high-volume production rule out die-cut sheets, RF semiconductor packaging and high-volume RF component assembly, 5G antenna package manufacturing at consumer-electronics volumes, and prototype work where a single material can fill any cavity shape. It is also used to tune existing assemblies where adding sheet material isn’t physically possible after final assembly.

The AC-001 Series covers 1.0 to 40.0 GHz across six standard loading levels, with each loading level optimized for a different region of the band. Viscosity, cure profile, and electrical performance can all be customized to match a specific dispensing process or production constraint. If an automated line needs a particular flow characteristic or the cure cycle needs to match an existing oven schedule, the formulation can be adjusted. 3PB Solutions works with experienced dispensing partners for prototyping through high-volume production.