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"qtyChanged": [ { "kind": "qty-changed", "category": "SCH", "key": "vf:22u|c_0805_2012metric", "part": { "value": "22u", "footprint": "Capacitor_SMD:C_0805_2012Metric" }, "qtyFrom": 7, "qtyTo": 1, "refsAdded": [], "refsRemoved": [ "C15", "C17", "C89", "C117", "C126" ], "refs": [ "C11" ] } ], "valueChanged": [ { "kind": "value-changed", "category": "SCH", "key": "vf:47u 10v|c_1206_3216metric", "part": { "value": "47u 10V", "footprint": "Capacitor_SMD:C_1206_3216Metric" }, "from": "22u", "to": "47u 10V", "refs": [ "C12" ] }, { "kind": "value-changed", "category": "SCH", "key": "vf:2200uf|cp_radial_d12.5mm_p5.00mm_p7.50mm", "part": { "value": "2200uF", "footprint": "EconoPET:CP_Radial_D12.5mm_P5.00mm_P7.50mm" }, "from": "330uF", "to": "2200uF", "refs": [ "C110" ] }, { "kind": "value-changed", "category": "SCH", "key": "vf:2200uf|cp_radial_d18.0mm_p5.00mm_p7.50mm", "part": { "value": "2200uF", "footprint": "EconoPET:CP_Radial_D18.0mm_P5.00mm_P7.50mm" }, "from": "15000uF", "to": "2200uF", "refs": [ "C111" ] } ], "footprintChanged": [ { "kind": "footprint-changed", "category": "SCH", "key": "vf:47u 10v|c_1206_3216metric", "part": { "value": "47u 10V", "footprint": "Capacitor_SMD:C_1206_3216Metric" }, "from": "Capacitor_SMD:C_0805_2012Metric", "to": "Capacitor_SMD:C_1206_3216Metric", "refs": [ "C12" ] } ], "mpnChanged": [], "dnpToggled": [ { "kind": "dnp-toggled", "category": "SCH", "key": "vf:2200uf|cp_radial_d18.0mm_p5.00mm_p7.50mm", "part": { "value": "2200uF", "footprint": "EconoPET:CP_Radial_D18.0mm_P5.00mm_P7.50mm" }, "from": "dnp", "to": "fitted", "refs": [ "C111" ] } ], "categoryChanged": [], "byCategory": { "SCH": { "added": 1, "qtyChanged": 1, "valueChanged": 3, "footprintChanged": 1, "dnpToggled": 1 }, "PCB": {}, "BOARD_FEATURE": {} } }, "impacts": [ { "id": "4d34f84138e07ca0", "kind": "bom", "ref": "C110", "category": "SCH", "metric": "value", "before": "330uF", "after": "2200uF", "delta": null, "severity": "info", "why": "SCH line 2200uF CP_Radial_D12.5mm_P5.00mm_P7.50mm: C110 value changed (330uF -> 2200uF).", "causes": [ "bomDiff.valueChanged[C110]" ], "assumptionDependent": false }, { "id": "4b589a292bea3f97", "kind": "bom", "ref": "C111", "category": "SCH", "metric": "dnp", "before": "dnp", "after": "fitted", "delta": null, "severity": "info", "why": "SCH line 2200uF CP_Radial_D18.0mm_P5.00mm_P7.50mm: C111 dnp toggled (dnp -> fitted).", "causes": [ "bomDiff.dnpToggled[C111]" ], "assumptionDependent": false }, { "id": "27a79bb05a0b4179", "kind": "bom", "ref": "C111", "category": "SCH", "metric": "value", "before": "15000uF", "after": "2200uF", "delta": null, "severity": "info", "why": "SCH line 2200uF CP_Radial_D18.0mm_P5.00mm_P7.50mm: C111 value changed (15000uF -> 2200uF).", "causes": [ "bomDiff.valueChanged[C111]" ], "assumptionDependent": false }, { "id": "601fbc8cc3c48ead", "kind": "bom", "ref": "C12", "category": "SCH", "metric": "footprint", "before": "Capacitor_SMD:C_0805_2012Metric", "after": "Capacitor_SMD:C_1206_3216Metric", "delta": null, "severity": "info", "why": "SCH line 47u 10V C_1206_3216Metric: C12 footprint changed (Capacitor_SMD:C_0805_2012Metric -> Capacitor_SMD:C_1206_3216Metric).", "causes": [ "bomDiff.footprintChanged[C12]" ], "assumptionDependent": false }, { "id": "75174bb66dbf6ba7", "kind": "bom", "ref": "C12", "category": "SCH", "metric": "value", "before": "22u", "after": "47u 10V", "delta": null, "severity": "info", "why": "SCH line 47u 10V C_1206_3216Metric: C12 value changed (22u -> 47u 10V).", "causes": [ "bomDiff.valueChanged[C12]" ], "assumptionDependent": false }, { "id": "20404956ad9bf69c", "kind": "bom", "ref": "C15", "refs": [ "C15", "C17", "C89", "C117", "C126" ], "category": "SCH", "metric": "qty", "before": 7, "after": 1, "delta": -6, "severity": "info", "why": "SCH line 22u C_0805_2012Metric: C15, C17, C89, C117, C126 qty changed (qty 7 -> 1).", "causes": [ "bomDiff.qtyChanged[C117]", "bomDiff.qtyChanged[C126]", "bomDiff.qtyChanged[C15]", "bomDiff.qtyChanged[C17]", "bomDiff.qtyChanged[C89]" ], "assumptionDependent": false }, { "id": "8ff9e8f802b1d94a", "kind": "bom", "ref": "J23", "category": "SCH", "metric": "qty", "before": 0, "after": 1, "delta": 1, "severity": "info", "why": "SCH line MENU PinHeader_1x02_P2.54mm_Vertical: J23 added (qty 0 -> 1).", "causes": [ "bomDiff.added[J23]" ], "assumptionDependent": false }, { "id": "e57d9526affdb7d3", "kind": "cert", "scope": "board", "metric": "ul796.findings", "before": 2, "after": 3, "delta": 1, "severity": "info", "why": "UL 796 pre-check findings 2 -> 3; verdict \"outside the fab's UL-recognized construction\".", "causes": [ "layoutDiff.outline" ], "assumptionDependent": true } ], "summary": { "counts": { "high": 0, "medium": 0, "low": 0, "info": 8 }, "headline": "8 informational change(s), none against a limit; first: SCH line 2200uF CP_Radial_D12.5mm_P5.00mm_P7.50mm: C110 value changed (330uF -> 2200uF).", "markdown": "**8 informational change(s), none against a limit; first: SCH line 2200uF CP_Radial_D12.5mm_P5.00mm_P7.50mm: C110 value changed (330uF -> 2200uF).** Layout: components: 1 added, 5 removed, 15 moved, 3 rotated, 1 with a new footprint, 3 with a new value; nets: 15 rerouted; the outline changed. BOM: 1 line(s) added, 1 changed quantity, 3 changed value, 1 changed footprint, 1 toggled DNP. Re-analysed on both revisions, for the changed nets and parts only: impedance, cert. Every electrical change is informational (improved, or no limit to judge against). Not run for missing inputs: cert.creepage, returnPath (see refused). Rows marked assumptionDependent rest on ledgered typical values." }, "analysed": { "ran": [ "impedance", "cert" ], "nets": [ "+5V", "+6V", "+9V_Unreg", "/MAGIC/FPGA/BE", "/MAGIC/FPGA/I2C1_SCL", "/MAGIC/FPGA/SPI0_TX", "/MAGIC/FPGA/SPI1_TX", "/MAGIC/FPGA/SPI1_~{READY}", "/MAGIC/MCU/GP25", "/MAGIC/MCU/GP27", "/MAGIC/MCU/SD_~{CS}", "/MAGIC/MCU/USB/CC1", "/MAGIC/MCU/USB/CC2", "/MAGIC/MCU/USB/VBUS", "GND", "Net-(D11-A)" ], "rails": [] }, "assumptions": { "before": [ { "source": "default", "analysis": "impedance", "key": "mask.er", "value": 3.8, "citation": "LPI solder mask epsilon_r 3.8 (NativeCAD default)", "verified": false, "affects": [ "outer-layer traces" ] }, { "source": "default", "analysis": "cert", "key": "fab", "value": "jlcpcb", "citation": "fab profile jlcpcb (NativeCAD default)", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "ipc6012.drillPositionTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.innerRegistrationTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.outerRegistrationTolMm", "value": 0.05, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipcClass", "value": "2", "citation": "IPC-6012 Class 2 (dedicated service) - the general commercial default", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "motC", "value": 105, "citation": "requested MOT 105 C (FR-4 laminates' common UL RTI)", "verified": false, "affects": [], "unit": "C" }, { "source": "default", "analysis": "returnPath", "key": "erEff", "value": 4, "citation": "effective epsilon_r 4 for the stitching distance (NativeCAD default)", "verified": false, "affects": [] }, { "source": "derived", "analysis": "returnPath", "key": "planes", "value": [], "citation": "inner layer with >= 30 % pour cover of one net (outer: >= 80 % and no other net's traces); voids = holes >= 2 mm^2 in that net's pours, as bounding rectangles", "affects": [ "every finding" ] }, { "source": "default", "analysis": "returnPath", "key": "riseTimeNs", "value": 1, "citation": "edge rise time 1 ns, f_knee = 0.35 / t_r (Johnson & Graham)", "verified": true, "affects": [], "unit": "ns" } ], "after": [ { "source": "default", "analysis": "impedance", "key": "mask.er", "value": 3.8, "citation": "LPI solder mask epsilon_r 3.8 (NativeCAD default)", "verified": false, "affects": [ "outer-layer traces" ] }, { "source": "default", "analysis": "cert", "key": "fab", "value": "jlcpcb", "citation": "fab profile jlcpcb (NativeCAD default)", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "ipc6012.drillPositionTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.innerRegistrationTolMm", "value": 0.075, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipc6012.outerRegistrationTolMm", "value": 0.05, "unit": "mm", "citation": "NativeCAD default (typical standard-technology rigid fab; no fab publishes it)", "verified": false, "affects": [ "ipc6012" ] }, { "source": "default", "analysis": "cert", "key": "ipcClass", "value": "2", "citation": "IPC-6012 Class 2 (dedicated service) - the general commercial default", "verified": true, "affects": [] }, { "source": "default", "analysis": "cert", "key": "motC", "value": 105, "citation": "requested MOT 105 C (FR-4 laminates' common UL RTI)", "verified": false, "affects": [], "unit": "C" }, { "source": "default", "analysis": "returnPath", "key": "erEff", "value": 4, "citation": "effective epsilon_r 4 for the stitching distance (NativeCAD default)", "verified": false, "affects": [] }, { "source": "derived", "analysis": "returnPath", "key": "planes", "value": [], "citation": "inner layer with >= 30 % pour cover of one net (outer: >= 80 % and no other net's traces); voids = holes >= 2 mm^2 in that net's pours, as bounding rectangles", "affects": [ "every finding" ] }, { "source": "default", "analysis": "returnPath", "key": "riseTimeNs", "value": 1, "citation": "edge rise time 1 ns, f_knee = 0.35 / t_r (Johnson & Graham)", "verified": true, "affects": [], "unit": "ns" } ] }, "refused": { "before": [ { "analysis": "cert.creepage", "reasonCode": "pcb_analysis_needs_input", "needs": [ "cert.pairs[].a", "cert.pairs[].b", "cert.pairs[].workingVrms" ], "remedy": "creepage needs the net pairs and the working voltage between them; UL 796 and IPC-6012 ran without them", "requested": false }, { "analysis": "returnPath", "reasonCode": "pcb_analysis_needs_input", "needs": [ "a reference plane (a poured copper layer)" ], "remedy": "no layer of this board is a plane, so there is no return path to check", "requested": false } ], "after": [ { "analysis": "cert.creepage", "reasonCode": "pcb_analysis_needs_input", "needs": [ "cert.pairs[].a", "cert.pairs[].b", "cert.pairs[].workingVrms" ], "remedy": "creepage needs the net pairs and the working voltage between them; UL 796 and IPC-6012 ran without them", "requested": false }, { "analysis": "returnPath", "reasonCode": "pcb_analysis_needs_input", "needs": [ "a reference plane (a poured copper layer)" ], "remedy": "no layer of this board is a plane, so there is no return path to check", "requested": false } ] } } }