Coil for surface mounting - has former that responds to heating to adjust shape and vary inductance

摘要

A small coil for use as a surface mounted device on circuit boards has windings (4) connected to end sections formed (2B) for soldered connections to the board. The coil former is produced as two parts with a temp. resistant base (5) and a top section (6). The top section of the former is produced of a material such as wax or plastics which can be warmed during the soldering process to allow the form to change and so permits adjustment of the inductance value. ADVANTAGE - Simple means of adjusting inductance even after being mounted.