“All voiding is bad.” Truth: IPC-7093A acknowledges that 100% void-free soldering of large thermal pads is impossible. Small distributed voids (e.g., 5–10% total area) are harmless.
The standard provides comprehensive, practical guidance on: ipc-7093a pdf
The standard is essential for multiple roles across the electronics supply chain: The Case of the Warped Board Myth 1:
. Released in late 2019, Revision A provides a complete overhaul of the original IPC-7093 to address the critical challenges of modern electronic layouts. I-Connect007 Core Focus of IPC-7093A QFN (Quad Flat No-lead) DFN (Dual Flat No-lead)
The IPC-7093A PDF guideline offers several benefits to designers, manufacturers, and inspectors of polymeric interconnects, including:
| | Focus | Relation to IPC-7093A | | --- | --- | --- | | IPC-7093A | Design & assembly of BTCs | Primary subject | | IPC-A-610 | Acceptability of electronic assemblies | Visual criteria for BTC side wetting | | IPC-J-STD-001 | Requirements for soldered electrical assemblies | Process requirements for solder joints | | IPC-7095 | Design & assembly of BGAs | Companion standard for ball-grid arrays | | IPC-7525 | Stencil design guidelines | Referenced for BTC aperture design |