Application notes

Number Title Description Downloads
AN-01 Transducer Signal Port Location Key

Provides key to Knowles' port location and terminal location naming system for all microphones and receivers. Numerous examples of various port locations are provided.

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(40.24 kB)

AN-06 Ferrofluid damped ED receivers

Application and designers' guide to using ferrofluid damped receivers. Discusses damping level for current drive (CI) and voltage drive (CV) applications, damping options, ITE aid and BTE aid frequency reponse, temperature performance, improved shock performance, distortion performance, and multiple damping techniques (Type I screen damping, Type II damping, Type III multipierce diaphragm damping, and ferrofluid damping)

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(523.08 kB)

AN-10 Transducer warranty date code numbering system

Knowles Electronics system nomenclature for laser-marking manufacturing date codes with week and year of manufacture and warranty period is detailed. Warranty extension markings are reviewed along with numerous examples of date code markings.

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(181.16 kB)

AN-13 Lead-Free Soldering to Hearing Aid Transducers
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(1.89 MB)