What is BSC for the package outline dimensions for Altera devices? - What is BSC for the package outline dimensions for Altera devices? Description To specify package mechanical dimensions, we use the term BSC, which means basic spacing between centers. This is a theoretical true position dimension and has no tolerance. We comply with JEDEC standards and therefore we use the JEDEC term. BSC is equal to milimeters (mm) for our package mechanical dimensions. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']