fix: correct pin numbering for sot723, msop, son, and make sot343 symmetric (#686, #677, #667)#697
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…sion - Extended dfn_def schema to accept ep (bool), epw, eph parameters - dfn generator now places an exposed/thermal center pad (pin N+1) when ep=true - Added UTDFN-4-EP(1x1) normalisation in normalizeDefinition() mapping to dfn4_w1.00mm_h1.00mm_p0.65mm_pl0.30mm_pw0.25mm_ep_epw0.50mm_eph0.50mm - Added generic utdfn -> dfn fallback for other UTDFN sizes - Added test cases in tests/dfn.test.ts verifying pad count, EP position, and alias parity Closes tscircuit#183
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/claim #686 |
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/claim #677 |
sagarmaurya64-ai
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/claim #667 |
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This PR resolves #686, #677, and #667 by correcting the pin coordinate mapping logic for
sot723,msop, andsonfootprints to adhere to standard layouts, and fixing the lopsidedsot343footprint.Changes Details:
SOT-723 Footprint Pin Mapping (fixes sot723 footprint numbers pins 1 and 3 on the wrong pads (1↔3 swapped vs datasheet) #686):
getCcwSot723Coordsinsrc/fn/sot723.tsto map coordinates correctly: Pin 1 (top-left), Pin 2 (bottom-left), Pin 3 (alone on the right). This resolves the previous swap of Pins 1 and 3.MSOP and SON Footprints Pin Mapping (fixes msop and son footprints number the right-column pins in reverse (pins 5↔8, 6↔7 swapped on 8-pin parts) #677):
getMsopCoordsinsrc/fn/msop.tsandgetSonPadCoordinsrc/fn/son.tsso that the right column pins are numbered counter-clockwise (counting upwards rather than downwards). This resolves the swapped/reversed pins on the right side (e.g. 5↔8, 6↔7 on 8-pin variants).SOT-343 Footprint Symmetry (fixes sot343 footprint is lopsided — the right pads sit too close to the center #667):
getCcwSot343Coordsinsrc/fn/sot343.tsto multiply the right column coordinates by1.92(matching the left side) so that the pads are symmetric about the center.sot343CourtyardOutlineto make the courtyard outline symmetric as well.Verification:
bun test).sot343andsot343_pl1.2_pw0.9_p2_w5.2_h5to match the correct, symmetric geometries.Closes #686
Closes #677
Closes #667