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Bay note 10 — From sample to identical production
What is allowed to change between prototype and volume — and the three things that must be frozen on the print so the hundredth part matches the first.
A perfect sample that cannot be repeated is a story, not a product. This plate is how we freeze the bay.
Freeze these three
- Core P/N + AL (or gap) — substitutes change Lp and EMI
- Wire gauge and stranding — Rdc/Rac and temperature
- Tape schedule / isolation construction — safety and capacitance
Allowed to move (with a note)
- Cosmetic tubing colour
- Carton / label artwork
- Process speed if electrical tests stay in window
Production tests we expect on the print
- Lp (and optionally Lk) at agreed frequency and bias
- DCR / turns ratio
- Hipot / insulation resistance for isolated parts
- Dimensions critical to the footprint
What to put on the print
- Golden sample reference ID once approved
- Acceptance windows (±L %, max DCR, hipot)
- Approved alternate materials list — or "no substitutes"
When you are ready to lock a design, say so on the contact form — we treat that enquiry as a freeze, not a fresh explore.