4. Box Build GDP and System Integration
Assembling a PCBA requires microscopic precision; enclosure integration requires systemic control. Box builds introduce complex mechanical tolerances, routing constraints, and human factors.
The System Integration GDP documents torque specifications, cable routing paths, and final functional requirements. It guides mechanical assembly using standardized work instructions, eliminating reliance on operator intuition.
- 4.1 System BOM and Mechanical BOM
A missing $0.02 screw can halt a production line just as effectively as a missing $50.00 main processor. While engineering teams often focus intently on the PCBA Bill of Materials, tracking every resistor and capacitor, the Mechanical BOM (MBOM) is s...
- 4.2 Mechanical CAD Package and Drawings
A perfect 3D model does not guarantee a perfect physical part. Manufacturing partners cannot functionally inspect a physical piece of plastic or metal against a digital STEP file without explicit 2D tolerances. The Mechanical CAD Package is the legal...
- 4.3 Wiring Harness and Cable Assembly Pack
Cable assemblies are the literal "nervous system" of your product, yet they are frequently the most under-documented, under-specified components in the entire Bill of Materials (BOM). A vague cable drawing leads directly to intermittent connections,...
- 4.4 Mechanical Assembly WI: Torque, Sealants, TIM and ESD Controls
The Box Build process is a critical stage where undocumented knowledge can severely compromise manufacturing consistency. When the assembly sequence relies on an operator's memory for which screw goes where, or an estimate for how much adhesive to ap...
- 4.5 Labels, Serialization, and Regulatory Technical File
A product label is more than a graphic design element; it is the official legal passport for your product. A perfectly functional device can be impounded at customs or rejected by distributors if regulatory marks are sized incorrectly, a serial numbe...
- 4.6 System Test, Calibration, and Pack-Out Specification
A Printed Circuit Board Assembly (PCBA) that has passed In-Circuit Testing (ICT) is not a finished product. Mechanical system integration introduces unique, system-level failure modes that ICT cannot catch, such as pinched custom cables, acoustically...