The minimum, nominal, and maximum dimensions of the physical component body and its leads (
Tip: If your company has an active IPC enterprise subscription, check your internal company portal, as it may already be included in your corporate library. 6. Implementing IPC-7352 in Your EDA Software
Footprint generation tools, such as the PCB Footprint Expert , transitioned to the IPC-7352 mathematical model in May 2023 to reflect these updated solder joint goals. Key Features of IPC-7352
, titled Generic Guideline for Land Pattern Design , was released in May 2023. It serves as a comprehensive guide for designing land patterns (footprints) for both surface mount and through-hole electronic components on printed circuit boards (PCBs). Ipc-7352 Pdf
: Improper thermal pad design underneath QFNs and BTCs trapping gasses.
To build an IPC-compliant footprint, your CAD tool or calculation engine processes several variables derived from the component datasheet and the fabrication house capabilities.
IPC-7352, often titled Generic Guideline for Land Pattern Design , focuses specifically on the requirements for surface mount device (SMD) terminal leads. It is part of the broader IPC-7350 series, which provides the foundational mathematical models to calculate pad sizes (land patterns) based on component dimensions, tolerances, and soldering process requirements. Key Aspects of IPC-7352 The minimum, nominal, and maximum dimensions of the
This distinction means there is no such thing as "violating" a guideline; rather, a design can be considered less than optimal if it doesn't adhere to the suggested principles. This gives companies the flexibility to develop internal standards based on their unique production tolerances and quality goals, while using IPC-7352 as a foundational reference.
Like IPC-7351B, the IPC-7352 standard works to create a uniform, industry-accepted method for creating footprints. IPC-7352 vs. IPC-7351: Understanding the Difference
IPC-7352 focuses on creating the best possible solder joints for devices. Key Features of IPC-7352 , titled Generic Guideline
Ensures the correct amount of solder accumulation at the toe, heel, and sides of the component lead.
The standard, titled "Generic Requirements for Surface Mount Design and Land Pattern Standard," is the successor to the long-standing IPC-7351 . It provides the essential guidelines for designing land patterns (footprints) for surface mount components to ensure high-quality solder joints and manufacturability. Key Highlights of IPC-7352
Aligned closely with IPC J-STD-001 solder fillet requirements