) becomes critical due to the . Rough surfaces increase insertion loss, forcing IPC-4562 to define several profile levels: Standard (STD): Roughness of 5.1 µm Rzcap R sub z or greater; suitable for designs under 1 GHz. Very Low Profile (VLP): Typical roughness of 2.5–4 µm Rzcap R sub z
In short, the modest cost of purchasing the official is negligible compared to the cost of a field failure lawsuit. ipc-4562 pdf
, a reduction of up to 10% from the nominal thickness is allowed. For 35 µm, the floor is 31.31 µm. We’re safe by a hair." ) becomes critical due to the
To ensure you are using the most current and accurate data, always obtain the standard directly from the IPC (Association Connecting Electronics Industries) official website. Using official copies ensures you are compliant with the latest revisions and amendments. , a reduction of up to 10% from