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"kind": "mpn-changed", "category": "SCH", "key": "mpn:max2839etn+", "part": { "value": "MAX2839", "footprint": "gsg-modules:QFN-56-1EP_8x8mm_P0.5mm_EP6.5x6.5mm_ThermalVias", "mpn": "MAX2839ETN+", "manufacturer": "Maxim" }, "from": "MAX2837ETM+", "to": "MAX2839ETN+", "refs": [ "U17" ] } ], "dnpToggled": [], "categoryChanged": [], "byCategory": { "SCH": { "removed": 2, "qtyChanged": 1, "valueChanged": 8, "footprintChanged": 1, "mpnChanged": 8 }, "PCB": {}, "BOARD_FEATURE": {} } }, "impacts": [ { "id": "39c328b5cad583a3", "kind": "cert", "scope": "board", "metric": "ipc6012.pBreakout", "before": 0.176, "after": 0.227, "delta": 0.051, "limit": { "value": "2", "kind": "band", "source": "IPC-6012 Class 2" }, "severity": "low", "why": "IPC-6012 Class 2: CS_XCVR via drill 0.4064 -> 0.254/0.4064 mm; GND vias 230 -> 233; RSSI via drill 0.3302/0.4064 -> 0.254/0.4064 mm - board breakout probability 0.176 -> 0.227 (+0.051), pre-check passes.", "causes": [ "layoutDiff.nets.changed[CS_XCVR]", "layoutDiff.nets.changed[GND]", "layoutDiff.nets.changed[RSSI]", "layoutDiff.nets.changed[SSP1_CIPO]", "layoutDiff.nets.changed[SSP1_COPI]", "layoutDiff.nets.changed[SSP1_SCK]", "layoutDiff.nets.changed[VAA]", "layoutDiff.nets.changed[VCC]", "layoutDiff.nets.changed[XCVR_EN]" ], "assumptionDependent": true }, { "id": "149e787ae6fdf0e8", "kind": "bom", "ref": "C104", "refs": [ "C104", "C111" ], "category": "SCH", "metric": "mpn", "before": "GRM1555C1H3R0CA01D", "after": "GCM1555C1H3R9BA16D", "delta": null, "severity": "info", "why": "SCH line GCM1555C1H3R9BA16D: C104, C111 mpn changed (GRM1555C1H3R0CA01D -> GCM1555C1H3R9BA16D).", "causes": [ "bomDiff.mpnChanged[C104]", "bomDiff.mpnChanged[C111]" ], "assumptionDependent": false }, { "id": "b0537f62ddd2cf8f", "kind": "bom", "ref": "C104", "refs": [ "C104", "C111" ], "category": "SCH", "metric": "value", "before": "3pF", "after": "3.9pF", "delta": null, "severity": "info", "why": "SCH line GCM1555C1H3R9BA16D: C104, C111 value changed (3pF -> 3.9pF).", "causes": [ "bomDiff.valueChanged[C104]", "bomDiff.valueChanged[C111]" ], "assumptionDependent": false }, { "id": "f432feeb19b15fd9", "kind": "bom", "ref": "C112", "category": "SCH", "metric": "mpn", "before": "GRM1555C1H181JA01D", "after": "GCM1555C1H121JA16D", "delta": null, "severity": "info", "why": "SCH line GCM1555C1H121JA16D: C112 mpn changed (GRM1555C1H181JA01D -> GCM1555C1H121JA16D).", "causes": [ "bomDiff.mpnChanged[C112]" ], "assumptionDependent": false }, { "id": "534db25b04874a52", "kind": "bom", "ref": "C112", "category": "SCH", "metric": "value", "before": "180pF", "after": "120pF", "delta": null, "severity": "info", "why": "SCH line GCM1555C1H121JA16D: C112 value changed (180pF -> 120pF).", "causes": [ "bomDiff.valueChanged[C112]" ], "assumptionDependent": false }, { "id": "61a81905fabbab87", "kind": "bom", "ref": "C114", "category": "SCH", "metric": "mpn", "before": "GRM155R71H332KA01D", "after": "GRM155R71H222KA01D", "delta": null, "severity": "info", "why": "SCH line GRM155R71H222KA01D: C114 mpn changed (GRM155R71H332KA01D -> GRM155R71H222KA01D).", "causes": [ "bomDiff.mpnChanged[C114]" ], "assumptionDependent": false }, { "id": "aee57675cd5cc5ec", "kind": "bom", "ref": "C114", "category": "SCH", "metric": "value", "before": "3.3nF", "after": "2.2nF", "delta": null, "severity": "info", "why": "SCH line GRM155R71H222KA01D: C114 value changed (3.3nF -> 2.2nF).", "causes": [ "bomDiff.valueChanged[C114]" ], "assumptionDependent": false }, { "id": "5485d957ec569f5d", "kind": "bom", "ref": "C93", "category": "SCH", "metric": "mpn", "before": "GRM155R71C103KA01D", "after": "GRM1555C1H220JA01D", "delta": null, "severity": "info", "why": "SCH line GRM1555C1H220JA01D: C93 mpn changed (GRM155R71C103KA01D -> GRM1555C1H220JA01D).", "causes": [ "bomDiff.mpnChanged[C93]" ], "assumptionDependent": false }, { "id": "fd2464d73f8558fe", "kind": "bom", "ref": "C93", "category": "SCH", "metric": "value", "before": "10nF", "after": "22pF", "delta": null, "severity": "info", "why": "SCH line GRM1555C1H220JA01D: C93 value changed (10nF -> 22pF).", "causes": [ "bomDiff.valueChanged[C93]" ], "assumptionDependent": false }, { "id": "dd108915d95066eb", "kind": "bom", "ref": "C99", "refs": [ "C99", "C102" ], "category": "SCH", "metric": "mpn", "before": "GRM1555C1H220JA01D", "after": "GCM1555C1H3R9BA16D", "delta": null, "severity": "info", "why": "SCH line GCM1555C1H3R9BA16D: C99, C102 mpn changed (GRM1555C1H220JA01D -> GCM1555C1H3R9BA16D).", "causes": [ "bomDiff.mpnChanged[C102]", "bomDiff.mpnChanged[C99]" ], "assumptionDependent": false }, { "id": "9e4d41654e0e01d4", "kind": "bom", "ref": "C99", "refs": [ "C99", "C102" ], "category": "SCH", "metric": "value", "before": "22pF", "after": "3.9pF", "delta": null, "severity": "info", "why": "SCH line GCM1555C1H3R9BA16D: C99, C102 value changed (22pF -> 3.9pF).", "causes": [ "bomDiff.valueChanged[C102]", "bomDiff.valueChanged[C99]" ], "assumptionDependent": false }, { "id": "fa73e3e4eac5ff95", "kind": "bom", "ref": "L6", "category": "SCH", "metric": "mpn", "before": null, "after": "LQG15HS3N0B02D", "delta": null, "severity": "info", "why": "SCH line LQG15HS3N0B02D: L6 mpn changed (none -> LQG15HS3N0B02D).", "causes": [ "bomDiff.mpnChanged[L6]" ], "assumptionDependent": false }, { "id": "56a67c84bcba68b2", "kind": "bom", "ref": "L6", "category": "SCH", "metric": "value", "before": "DNP", "after": "3.0nH", "delta": null, "severity": "info", "why": "SCH line LQG15HS3N0B02D: L6 value changed (DNP -> 3.0nH).", "causes": [ "bomDiff.valueChanged[L6]" ], "assumptionDependent": false }, { "id": "9f5378d28c9cc96f", "kind": "bom", "ref": "L7", "category": "SCH", "metric": "qty", "before": 1, "after": 0, "delta": -1, "severity": "info", "why": "SCH line HK10056N2S-T: L7 removed (qty 1 -> 0).", "causes": [ "bomDiff.removed[L7]" ], "assumptionDependent": false }, { "id": "1fbf96ec3491a981", "kind": "bom", "ref": "L9", "category": "SCH", "metric": "qty", "before": 6, "after": 4, "delta": -2, "severity": "info", "why": "SCH line DNP GSG-0402: L9 qty changed (qty 6 -> 4).", "causes": [ "bomDiff.qtyChanged[L9]" ], "assumptionDependent": false }, { "id": "772ce8c94fe71963", "kind": "bom", "ref": "P55", "category": "SCH", "metric": "qty", "before": 1, "after": 0, "delta": -1, "severity": "info", "why": "SCH line TXENABLE GSG-TESTPOINT-50MIL: P55 removed (qty 1 -> 0).", "causes": [ "bomDiff.removed[P55]" ], "assumptionDependent": false }, { "id": "c806ed116d15756b", "kind": "bom", "ref": "R25", "refs": [ "R25", "R26" ], "category": "SCH", "metric": "mpn", "before": "RMCF0402JT470R", "after": "RC0402FR-07750RL", "delta": null, "severity": "info", "why": "SCH line RC0402FR-07750RL: R25, R26 mpn changed (RMCF0402JT470R -> RC0402FR-07750RL).", "causes": [ "bomDiff.mpnChanged[R25]", "bomDiff.mpnChanged[R26]" ], "assumptionDependent": false }, { "id": "00b70991efc9f454", "kind": "bom", "ref": "R25", "refs": [ "R25", "R26" ], "category": "SCH", "metric": "value", "before": "475", "after": "750", "delta": null, "severity": "info", "why": "SCH line RC0402FR-07750RL: R25, R26 value changed (475 -> 750).", "causes": [ "bomDiff.valueChanged[R25]", "bomDiff.valueChanged[R26]" ], "assumptionDependent": false }, { "id": "01b9e9974029aa7e", "kind": "bom", "ref": "U17", "category": "SCH", "metric": "footprint", "before": "hackrf:GSG-QFN48-6", "after": "gsg-modules:QFN-56-1EP_8x8mm_P0.5mm_EP6.5x6.5mm_ThermalVias", "delta": null, "severity": "info", "why": "SCH line MAX2839ETN+: U17 footprint changed (hackrf:GSG-QFN48-6 -> gsg-modules:QFN-56-1EP_8x8mm_P0.5mm_EP6.5x6.5mm_ThermalVias).", "causes": [ "bomDiff.footprintChanged[U17]" ], "assumptionDependent": false }, { "id": "458ed691f1f1f9b3", "kind": "bom", "ref": "U17", "category": "SCH", "metric": "mpn", "before": "MAX2837ETM+", "after": "MAX2839ETN+", "delta": null, "severity": "info", "why": "SCH line MAX2839ETN+: U17 mpn changed (MAX2837ETM+ -> MAX2839ETN+).", "causes": [ "bomDiff.mpnChanged[U17]" ], "assumptionDependent": false }, { "id": "15bccf11b5f591ac", "kind": "bom", "ref": "U17", "category": "SCH", "metric": "value", "before": "MAX2837", "after": "MAX2839", "delta": null, "severity": "info", "why": "SCH line MAX2839ETN+: U17 value changed (MAX2837 -> MAX2839).", "causes": [ "bomDiff.valueChanged[U17]" ], "assumptionDependent": false }, { "id": "dbecada061717f7e", "kind": "cert", "scope": "board", "metric": "ipc6012.findings", "before": 40, "after": 64, "delta": 24, "severity": "info", "why": "CS_XCVR via drill 0.4064 -> 0.254/0.4064 mm; GND vias 230 -> 233; RSSI via drill 0.3302/0.4064 -> 0.254/0.4064 mm - IPC-6012 findings 40 -> 64.", "causes": [ "layoutDiff.nets.changed[CS_XCVR]", "layoutDiff.nets.changed[GND]", "layoutDiff.nets.changed[RSSI]", "layoutDiff.nets.changed[SSP1_CIPO]", "layoutDiff.nets.changed[SSP1_COPI]", "layoutDiff.nets.changed[SSP1_SCK]", "layoutDiff.nets.changed[VAA]", "layoutDiff.nets.changed[VCC]", "layoutDiff.nets.changed[XCVR_EN]" ], "assumptionDependent": false }, { "id": "f4a55f1d6396d81b", "kind": "impedance", "net": "/Baseband/CPOUT+", "layer": "F.Cu", "metric": "z0Ohm", "before": 60.09, "after": 54.76, "delta": -5.33, "severity": "info", "why": "/Baseband/CPOUT+: rerouted (2.827 mm new copper); F.Cu width 0.2413-0.254 -> 0.2934 mm; pads +U17.27 -U17.23; +10 more - Z0 on F.Cu 60.09 ohm -> 54.76 ohm (-5.33), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C112]", "layoutDiff.components.moved[R25]", "layoutDiff.components.moved[U17]", "layoutDiff.nets.changed[/Baseband/CPOUT+]" ], "assumptionDependent": true }, { "id": "d15c4520325191b2", "kind": "impedance", "net": "/Baseband/CPOUT+", "layer": "F.Cu", "metric": "zdiffOhm", "before": 96.57, "after": 103.8, "delta": 7.23, "severity": "info", "why": "/Baseband/CPOUT+: rerouted (2.827 mm new copper); F.Cu width 0.2413-0.254 -> 0.2934 mm; pads +U17.27 -U17.23; +10 more - Zdiff on F.Cu 96.57 ohm -> 103.8 ohm (+7.23), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C112]", "layoutDiff.components.moved[R25]", "layoutDiff.components.moved[U17]", "layoutDiff.nets.changed[/Baseband/CPOUT+]" ], "assumptionDependent": true }, { "id": "dc8beb47e6686f61", "kind": "impedance", "net": "/Baseband/CPOUT-", "layer": "F.Cu", "metric": "z0Ohm", "before": 60.09, "after": 54.76, "delta": -5.33, "severity": "info", "why": "/Baseband/CPOUT-: rerouted (3.664 mm new copper); F.Cu width 0.2413-0.254 -> 0.2934 mm; pads +U17.28 -U17.24; +10 more - Z0 on F.Cu 60.09 ohm -> 54.76 ohm (-5.33), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C112]", "layoutDiff.components.moved[R26]", "layoutDiff.components.moved[U17]", "layoutDiff.nets.changed[/Baseband/CPOUT-]" ], "assumptionDependent": true }, { "id": "59f9443b325663ee", "kind": "impedance", "net": "/Baseband/XCVR_CLKOUT", "layer": "F.Cu", "metric": "z0Ohm", "before": 64.79, "after": 77.42, "delta": 12.63, "severity": "info", "why": "/Baseband/XCVR_CLKOUT: rerouted (5.649 mm new copper); F.Cu width 0.2032 -> 0.127 mm; pads +U17.21 -U17.16; +5 more - Z0 on F.Cu 64.79 ohm -> 77.42 ohm (+12.63), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[P14]", "layoutDiff.components.moved[U17]", "layoutDiff.nets.changed[/Baseband/XCVR_CLKOUT]" ], "assumptionDependent": true }, { "id": "0da99baf68810265", "kind": "impedance", "net": "Net-(C106-Pad1)", "layer": "F.Cu", "metric": "z0Ohm", "before": 60.09, "after": 54.76, "delta": -5.33, "severity": "info", "why": "Net-(C106-Pad1): rerouted (2.045 mm new copper); F.Cu width 0.2413 -> 0.2934 mm; pads +U17.30 -U17.27; +5 more - Z0 on F.Cu 60.09 ohm -> 54.76 ohm (-5.33), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C106]", "layoutDiff.components.moved[U17]", "layoutDiff.nets.changed[Net-(C106-Pad1)]" ], "assumptionDependent": true }, { "id": "c5cb6382f0b5ecec", "kind": "impedance", "net": "Net-(C114-Pad1)", "layer": "F.Cu", "metric": "z0Ohm", "before": 58.68, "after": 54.76, "delta": -3.92, "severity": "info", "why": "Net-(C114-Pad1): rerouted (0.9804 mm new copper); F.Cu width 0.254 -> 0.2934 mm; C114 moved 2.019 mm; +5 more - Z0 on F.Cu 58.68 ohm -> 54.76 ohm (-3.92), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C114]", "layoutDiff.components.moved[R26]", "layoutDiff.nets.changed[Net-(C114-Pad1)]" ], "assumptionDependent": true }, { "id": "f1961d8fb75c5599", "kind": "impedance", "net": "Net-(C114-Pad2)", "layer": "F.Cu", "metric": "z0Ohm", "before": 58.68, "after": 54.76, "delta": -3.92, "severity": "info", "why": "Net-(C114-Pad2): rerouted (0.9804 mm new copper); F.Cu width 0.254 -> 0.2934 mm; C114 moved 2.019 mm; +5 more - Z0 on F.Cu 58.68 ohm -> 54.76 ohm (-3.92), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[C114]", "layoutDiff.components.moved[R25]", "layoutDiff.nets.changed[Net-(C114-Pad2)]" ], "assumptionDependent": true }, { "id": "f188731cceb935d2", "kind": "impedance", "net": "RXENABLE", "layer": "B.Cu", "metric": "z0Ohm", "before": 64.79, "after": null, "delta": null, "severity": "info", "why": "RXENABLE: net removed; P56 moved 2.203 mm; U17 moved 0.1915 mm; +3 more - Z0 on B.Cu gone (was 64.79 ohm).", "causes": [ "layoutDiff.components.moved[P56]", "layoutDiff.components.moved[U17]", "layoutDiff.nets.removed[RXENABLE]" ], "assumptionDependent": true }, { "id": "42aad100cb0f5f2e", "kind": "impedance", "net": "RXENABLE", "layer": "F.Cu", "metric": "z0Ohm", "before": 64.79, "after": null, "delta": null, "severity": "info", "why": "RXENABLE: net removed; P56 moved 2.203 mm; U17 moved 0.1915 mm; +3 more - Z0 on F.Cu gone (was 64.79 ohm).", "causes": [ "layoutDiff.components.moved[P56]", "layoutDiff.components.moved[U17]", "layoutDiff.nets.removed[RXENABLE]" ], "assumptionDependent": true }, { "id": "7776b9a4ceb8cce9", "kind": "impedance", "net": "SSP1_CIPO", "layer": "F.Cu", "metric": "z0Ohm", "before": 64.79, "after": 77.42, "delta": 12.63, "severity": "info", "why": "SSP1_CIPO: rerouted (18.71 mm new copper); F.Cu width 0.2032 -> 0.127-0.2032 mm; via drill 0.3302 -> 0.254/0.3302 mm; +5 more - Z0 on F.Cu 64.79 ohm -> 77.42 ohm (+12.63), with no limit to judge against.", "causes": [ "layoutDiff.components.moved[U17]", "layoutDiff.nets.changed[SSP1_CIPO]" ], "assumptionDependent": true }, { "id": "5dbab156067f40ec", "kind": "impedance", "net": "TXENABLE", "layer": "B.Cu", "metric": "z0Ohm", "before": 64.79, "after": null, "delta": null, "severity": "info", "why": "TXENABLE: net removed; P55 removed; P55 (TXENABLE) removed from the SCH BOM; +4 more - Z0 on B.Cu gone (was 64.79 ohm).", "causes": [ "layoutDiff.components.moved[U17]", "layoutDiff.components.removed[P55]", "layoutDiff.nets.removed[TXENABLE]" ], "assumptionDependent": true }, { "id": "d427ebb202d3d748", "kind": "impedance", "net": "TXENABLE", "layer": "F.Cu", "metric": "z0Ohm", "before": 64.79, "after": null, "delta": null, "severity": "info", "why": "TXENABLE: net removed; P55 removed; P55 (TXENABLE) removed from the SCH BOM; +4 more - Z0 on F.Cu gone (was 64.79 ohm).", "causes": [ "layoutDiff.components.moved[U17]", "layoutDiff.components.removed[P55]", "layoutDiff.nets.removed[TXENABLE]" ], "assumptionDependent": true }, { "id": "67781071397ad720", "kind": "impedance", "net": "XCVR_RXTX", "layer": "B.Cu", "metric": "z0Ohm", "before": null, "after": 64.79, "delta": null, "severity": "info", "why": "XCVR_RXTX: new net; P56 moved 2.203 mm; U17 moved 0.1915 mm; +3 more - Z0 on B.Cu appeared at 64.79 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.moved[P56]", "layoutDiff.components.moved[U17]", "layoutDiff.nets.added[XCVR_RXTX]" ], "assumptionDependent": true }, { "id": "b5a48d2d25e46f04", "kind": "impedance", "net": "XCVR_RXTX", "layer": "F.Cu", "metric": "z0Ohm", "before": null, "after": 64.79, "delta": null, "severity": "info", "why": "XCVR_RXTX: new net; P56 moved 2.203 mm; U17 moved 0.1915 mm; +3 more - Z0 on F.Cu appeared at 64.79 ohm, with no limit to judge against.", "causes": [ "layoutDiff.components.moved[P56]", "layoutDiff.components.moved[U17]", "layoutDiff.nets.added[XCVR_RXTX]" ], "assumptionDependent": true } ], "summary": { "counts": { "high": 0, "medium": 0, "low": 1, "info": 35 }, "headline": "36 impact(s) (1 low); worst: IPC-6012 Class 2: CS_XCVR via drill 0.4064 -> 0.254/0.4064 mm; GND vias 230 -> 233; RSSI via drill 0.3302/0.4064 -> 0.254/0.4064 mm - board breakout probability 0.176 -> 0.227 (+0.051), pre-check passes.", "markdown": "**36 impact(s) (1 low); worst: IPC-6012 Class 2: CS_XCVR via drill 0.4064 -> 0.254/0.4064 mm; GND vias 230 -> 233; RSSI via drill 0.3302/0.4064 -> 0.254/0.4064 mm - board breakout probability 0.176 -> 0.227 (+0.051), pre-check passes.** Layout: components: 3 removed, 32 moved, 4 rotated, 1 with a new footprint, 11 with a new value; nets: 15 added, 8 removed, 37 rerouted. BOM: 2 removed, 1 changed quantity, 8 changed value, 1 changed footprint, 8 changed MPN. Re-analysed on both revisions, for the changed nets and parts only: impedance, cert, returnPath. LOW: IPC-6012 Class 2: CS_XCVR via drill 0.4064 -> 0.254/0.4064 mm; GND vias 230 -> 233; RSSI via drill 0.3302/0.4064 -> 0.254/0.4064 mm - board breakout probability 0.176 -> 0.227 (+0.051), pre-check passes. Not run for missing inputs: cert.creepage (see refused). Rows marked assumptionDependent rest on ledgered typical values." }, "analysed": { "ran": [ "impedance", "cert", "returnPath" ], "nets": [ "/Baseband/CPOUT+", "/Baseband/CPOUT-", "/Baseband/ID+", "/Baseband/ID-", "/Baseband/RXBBI+", "/Baseband/RXBBI-", "/Baseband/RXBBQ+", "/Baseband/RXBBQ-", "/Baseband/TXBBI+", "/Baseband/TXBBI-", "/Baseband/TXBBQ+", "/Baseband/TXBBQ-", "/Baseband/XCVR_CLKOUT", "/Baseband/XTAL2", "CS_XCVR", "GND", "Net-(C102-Pad1)", "Net-(C102-Pad2)", "Net-(C104-Pad1)", "Net-(C104-Pad2)", "Net-(C106-Pad1)", "Net-(C111-Pad1)", "Net-(C111-Pad2)", "Net-(C114-Pad1)", "Net-(C114-Pad2)", "Net-(C99-Pad1)", "Net-(C99-Pad2)", "RSSI", "RXENABLE", "RX_IF", "SSP1_CIPO", "SSP1_COPI", "SSP1_SCK", "TXENABLE", "TX_IF", "VAA", "VCC", "XCVR_CLK", "XCVR_EN", "XCVR_RXTX", "unconnected-(U17-Pad10)", "unconnected-(U17-Pad12)", "unconnected-(U17-Pad14)", "unconnected-(U17-Pad15)", "unconnected-(U17-Pad16)", "unconnected-(U17-Pad17)", "unconnected-(U17-Pad18)", "unconnected-(U17-Pad23)", "unconnected-(U17-Pad3)", "unconnected-(U17-Pad33)", "unconnected-(U17-Pad34)", "unconnected-(U17-Pad40)", "unconnected-(U17-Pad41)", "unconnected-(U17-Pad42)", "unconnected-(U17-Pad43)", "unconnected-(U17-Pad44)", "unconnected-(U17-Pad45)", "unconnected-(U17-Pad46)", "unconnected-(U17-Pad55)", "unconnected-(U17-Pad56)", "unconnected-(U17-Pad6)", "unconnected-(U17-Pad8)", "unconnected-(U17-Pad9)", "unconnected-(U23-Pad9)" ], "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": "derived", "analysis": "impedance", "key": "no_target", "value": "no impedance targets (netClasses / .kicad_pro)", "affects": [ "every row: status no_target" ] }, { "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": [ "In1.Cu:GND", "In2.Cu:VCC" ], "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": "derived", "analysis": "impedance", "key": "no_target", "value": "no impedance targets (netClasses / .kicad_pro)", "affects": [ "every row: status no_target" ] }, { "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": [ "In1.Cu:GND", "In2.Cu:VCC" ], "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 } ], "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 } ] } } }