Critical
Blocks fabrication
A risk likely to damage hardware, stop the board working or make it unsafe. It blocks fabrication until it has been assessed.
Design Assurance Report
Sample Design Assurance Report
See exactly what you receive: an independent review of a public ESP32 IoT board, with a readiness status, findings ranked by severity, schematic evidence and the datasheets behind each finding.
Download sample report (PDF)Four severity levels
Every finding is ranked so you know what has to be assessed before fabrication and what can wait.
- Critical
- Significant
- Verification
- Improvement
Significant
Address before pilot
A risk that can cause failures, resets or reliability problems in normal use. Assess it before a pilot build.
Verification
Measure on prototype
A point the documents cannot settle. The report says exactly what to measure or check on the prototype.
Improvement
Robustness & DFM
Robustness, EMC or manufacturability gains that are not required for a working first build.
What each finding contains
Evidence
What the design shows: parts, values, nets and the datasheet limits.
Impact
What can go wrong on the board, and why it matters.
Verify
What to measure or check on the prototype.
Reference
The datasheet section, app note or standard behind it.
Findings identify risks and their basis; PreBuild does not prescribe design changes. Any design change, and its validation, remains the responsibility of the design owner.
- Readiness status and severity counts
- Checks your design passed
- Method and limitations
- Never: repository links, internal file paths or reviewer names
THE DELIVERABLE
The outcome: a Design Assurance Report.
Not an unreadable DRC dump. A structured, evidence-based assessment of whether your hardware is genuinely ready to fabricate.
REPORT: DAR-0417
BOARD: SENSOR-NODE-REV2
STATUS:READY WITH ACTIONS
1 CRITICAL
Blocks fabrication
3 SIGNIFICANT
Address before pilot
4 VERIFICATION
Evidence gaps noted
6 IMPROVEMENTS
DFM & yield gains
CRITICAL · F-01No current limiting on external J4 5V rail
Direct short risk on an exposed accessory connector.
SIGNIFICANT · F-020402 Decoupling return via spaced > 2.2mm from pad
Loop inductance will degrade microcontroller high-frequency noise margin.
Full confidentiality guaranteed under bilateral Non-Disclosure Agreement.
REVISION TRACKEDFABRICATION RISK REDUCTION
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