Calculating Landed Cost Crossover between Flying Probe and Fixture Tooling
Landed cost crossover balances fixture NRE against probe runtime fees, shifting financial advantage to fixtures once batch volume savings offset tooling costs.
Non-Recurring Engineering Cost
Initial Charge
Initial setup fees represent the upfront financial commitment required by a contract manufacturer before a specific printed circuit board design enters volume production. Non-recurring engineering cost covers specialized tooling, custom test fixture programming, and component library creation necessary for automated surface mount technology lines. Payment of these charges transfers ownership of the resulting Gerber file modifications and stencil data from the buyer to the supplier.
Financial amortization occurs across the ordered production batch, altering unit economics based on total manufactured volume. When initial quantities drop below standard thresholds, these fixed expenditures disproportionately elevate the cost per assembled unit.
Tooling Verification
Pre-production preparation requires exact verification of computer-aided manufacturing files against bare board fabrication constraints before physical tooling fabrication begins. Engineering teams review drill tables and copper clearances to prevent solder bridging during subsequent wave soldering or refreezing processes. Once data approval is secured, laser-cut stainless steel stencils and custom bed-of-nails test adapters are manufactured to match the physical layout of the target printed circuit board assembly.
These physical assets govern automated paste deposition and electrical continuity testing on the shop floor. Discrepancies identified during initial test fixture debugging generate additional engineering charges that require formal change orders and client sign-off.
Financial Amortization
Accounting practices dictate that these capitalized outlays are distributed across the anticipated production lifecycle of the electronic hardware assembly. Purchasing departments negotiate these initial charges independently from unit production costs to maintain visibility into supplier pricing structures. Production yields directly influence the final financial burden per delivered assembly because higher volume output dilutes the initial tooling expense.
Component obsolescence introduces a distinct financial risk if design revisions occur before the initial amortization schedule is fully realized by the procurement organization. Proper contractual structuring ensures that physical tooling assets remain accessible for future manufacturing runs without incurring duplicate setup charges.
Flying Probe against a Bed of Nails at Real Volumes
Flying probe testing saves tooling costs on runs under 11,000 units, while bed of nails fixtures deliver superior cycle speeds and lower per-unit cost at scale.