Valuation Baselines for Electronics Design Transfer Assets
Asset valuation baselines for electronics design transfers require native ECAD databases, uncompiled firmware source trees, and audited factory test tooling.
Bare-Board Continuity
Meaning
Automated electrical testing verifies unpopulated circuit paths across a printed circuit substrate prior to component assembly. Conducting bare-board continuity verification identifies open circuits and short circuits created during copper etching or panel plating. The assessment verifies that every designed net conducts electricity end to end without unwanted bridge connections to adjacent copper pours.
Standard test passes occur before solder mask application or prior to surface-mount pick and place operations.
Trace Resistance
Low-resistance measurement confirms the physical integrity of etched copper tracks between land patterns. Applying bare-board continuity protocols involves injecting controlled current signals through spring-loaded test pins on flying probe or bed-of-nails fixtures. Measured ohmic drop across a trace must remain below fixed acceptance limits set by board designers.
High resistance values indicate necking or copper voids inside microvias.
Isolation Threshold
Unwanted current paths between independent signals destroy active components upon initial board power-up. Verifying bare-board continuity includes high-voltage isolation checks across adjacent nets to detect fine conductive bridges. Test equipment applies high voltage pulses between isolated copper paths to measure leakage currents.
Substrates exceeding isolation limits are routed to scrap bins before reaching assembly lines.
Production Qualification
Yield management relies on bare-board continuity metrics to lock in substrate fabrication processes. Flying probe systems record net list signatures to generate pass logs for trace integrity. Automated test reports form the primary mechanical quality gate before delivering raw boards to automated loading lines.