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Ship remaining PCB plan slices: BOM chain, SPOF, EMI FACT, gated Tj.

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Package/pinout/ratings mismatches, SPOF as REVIEW, EMI only with a
datasheet quote, and Tj from copper+vias+θJA when every parameter exists.
Re-extract SI layout_rules from 1.12.0; ImpedenceFinder license stays UNKNOWN.
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michele
2026-09-20 12:29:27 +02:00
parent 65a91419a2
commit 1b3529501f
20 changed files with 1337 additions and 30 deletions
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backend/periscopex/finding_engine.py
+16
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@@ -177,6 +177,22 @@ def _seed() -> None:
requirement="Connector/USB net ESD — REVIEW unless a mandatory FACT exists.")
_add("PE-RET-001", "TYPICAL", "REVIEW", domain="pcb",
requirement="High-speed net over a GND pour should have a nearby GND via.")
_add("PE-THM-002", "TYPICAL", "RISK", domain="pcb",
requirement="Tj = Ta + P·θJA when copper area, vias, P, and θJA all exist.")
_add("PE-BOM-010", "MANDATORY", "RULE", domain="pcb",
requirement="BOM / PCB footprint family must match datasheet package.")
_add("PE-BOM-011", "MANDATORY", "RULE", domain="pcb",
requirement="Datasheet pin_count / pintable must match PCB pads.")
_add("PE-BOM-012", "MANDATORY", "RULE", domain="pcb",
requirement="Operating voltage must not exceed the sourced rating / abs-max.")
_add("PE-BOM-013", "MANDATORY", "RULE", domain="pcb",
requirement="Specified operating temperature must not exceed abs-max T.")
_add("PE-BOM-014", "MANDATORY", "RULE", domain="pcb",
requirement="I_load must not exceed the sourced current rating / abs-max.")
_add("PE-SPOF-001", "TYPICAL", "REVIEW", domain="pcb",
requirement="Single regulator or crystal feeding many ICs is REVIEW, not ERROR.")
_add("PE-EMI-001", "RECOMMENDED", "REVIEW", domain="pcb",
requirement="Datasheet EMI/filter FACT vs ferrite/common-mode on the net.")
_seed()