Schematic Handover Checklist (what we deliver / what we need from you)
Zhixin Heng Electronics - PCB Solution Design

[What you provide]
1. Functional and performance requirements (what it does, key parameters, target cost)
2. Schematic sketch or full schematic (any of: AD / OrCAD / Allegro / KiCad / EAGLE / schematic PDF)
3. BOM (part number, footprint, tolerance, voltage rating; mark the critical parts)
4. Mechanical drawing or outline dimensions (DXF / STEP, with mounting holes, connector positions, slots, panelisation)
5. Special requirements (high-speed interface list, isolation and withstand voltage, cooling method, special process)

[What we deliver]
1. Cleaned-up schematic source files (multi-sheet, clear module boundaries)
2. ERC report (every item cleared)
3. Standardised symbol and footprint libraries (with 3D models)
4. Complete BOM (reference / footprint / part number / parameters / alternates / critical flag)
5. Design notes (module split, key design decisions, open items to confirm)
6. A package that can go straight into layout and production output

[Where we focus]
- Power integrity and power-up sequencing
- Completeness and termination of critical signals
- Protection and reliability (ESD / overvoltage / reverse polarity / surge)
- Debug ports and test point coverage
- Part obsolescence, sourcing difficulty and second sources

-- Zhixin Heng PCB Solution Design - Technical Support