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The difference between soft & hard board used in microwa

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nafah

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soft and hard board

Please , I'd like to know the difference between the softborad and hardbord which used in microwave
 

Re: soft and hard board

Hello nafah,


The name Soft & Hard board is used based on the substrate material type...

Soft Boards or Duroid Boards
Details:
Etch back process
Nominal conductor thickness 18 µm (½ oz rolled Cu)
Drilled before etching for PTH and plate up
Drilled after etching and plate up for NPTH
Cutting tool to mill

Hard Boards or Alumina Boards
Details:
Plate Up process
Nominal conductor thickness 3-5 µm
Au Laser Drilled/routed
Thin film technology
Resistors TaN or NiCr


---manju---
 

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    nafah

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