IPC-7352
The is the industry standard for Generic Requirements for Surface Mount Design and Land Pattern Standard . It recently succeeded the widely used IPC-7251 and IPC-7351B standards, providing updated guidelines for creating optimized PCB land patterns (footprints).
The IPC-7352 PDF is also used by suppliers and customers to ensure that components meet specific requirements and are compatible with other components and systems. The standard is essential for companies that design and manufacture electronic components, as it helps to ensure that their products meet industry standards and regulations.
: Defines the minimum area needed for the component body, leads, and assembly equipment access. Thermal Considerations
Heel:
The solder that forms under the bend or back of the lead (critical for Gull-wing leads). Side: The solder along the sides of the lead. Transition from IPC-7351B
Official Sources for the Genuine PDF
Getting the IPC-7352 PDF
- Blindly using “Most” class increases board area and may not be necessary — pick class to match yield goals.
- Paste apertures: avoid full-size rectangular apertures for odd-shaped pads; use segmented or windowed apertures to reduce tombstoning or solder voiding.
- For very small parts (e.g., 0201/01005), follow manufacturer and assembly house recommendations beyond IPC guidance.
- Remember component placement tolerances and pick-and-place nozzle sizes when defining courtyard and pad-to-pad clearances.