One of the excellent characteristics of photo etching is that you can process with an arbitrary depth.
However, when producing product which are etched from both sides, very strict control is required in order to reproduce outside dimension correctly and to satisfy that depth of flute.
Molex Kiire's half etching technology is utilized in production of suspension blanks for HDD.
Photo on the left and above are details of half etching from both sides.
Half etching from one side.
End tip of load beam
Half etch on the tip of lead frame
Processing accuracy of photo etching for suspension(referential value)
