add soj fp

src/fn/index.ts

@@ -78,3 +78,4 @@ export { sot } from "./sot"
 export { sot343 } from "./sot343"
 export { m2host } from "./m2host"
 export { to92l } from "./to92l"
+export { soj } from "./soj"

src/fn/soic.ts

@@ -16,6 +16,7 @@ export const extendSoicDef = (newDefaults: {
   num_pins?: number
   legsoutside?: boolean
   pillpads?: boolean
+  reftextsize?: number
 }) =>
   base_def
     .extend({
@@ -33,9 +34,16 @@ export const extendSoicDef = (newDefaults: {
         .boolean()
         .optional()
         .default(newDefaults.pillpads ?? false),
+      reftextsize: z.number().optional(),
       silkscreen_stroke_width: z.number().optional().default(0.1),
     })
     .transform((v) => {
+      if (
+        v.reftextsize === undefined &&
+        newDefaults.reftextsize !== undefined
+      ) {
+        v.reftextsize = newDefaults.reftextsize
+      }
       // Default inner diameter and outer diameter
       if (!v.pw && !v.pl) {
         v.pw = length.parse("0.6mm")
@@ -135,7 +143,7 @@ export const soicWithoutParsing = (parameters: z.infer<typeof soic_def>) => {
   const silkscreenRefText: SilkscreenRef = silkscreenRef(
     0,
     sh / 2 + 0.4,
-    sh / 12,
+    parameters.reftextsize ?? sh / 12,
   )
   const silkscreenBorder: PcbSilkscreenPath = {
     type: "pcb_silkscreen_path",

src/fn/soj.ts

@@ -0,0 +1,26 @@
+import type { AnyCircuitElement } from "circuit-json"
+import { extendSoicDef, soicWithoutParsing } from "./soic"
+
+export const soj_def = extendSoicDef({
+  legsoutside: false,
+  pw: "0.6mm",
+  pl: "2.1mm",
+})
+
+export const soj = (
+  raw_params: any,
+): { circuitJson: AnyCircuitElement[]; parameters: any } => {
+  const parameters = soj_def.parse(raw_params)
+  parameters.w += 1.8
+
+  const m = Math.min(1, parameters.p / 2)
+  const sh =
+    (parameters.num_pins / 2 - 1) * parameters.p + (parameters.pw ?? 0.6) + m
+
+  parameters.reftextsize = Math.max(0.5, Math.min(0.7, sh / 12))
+
+  return {
+    circuitJson: soicWithoutParsing(parameters),
+    parameters,
+  }
+}

tests/kicad-parity/soj_kicad_parity.test.ts

@@ -0,0 +1,18 @@
+import { expect, test } from "bun:test"
+import { compareFootprinterVsKicad } from "../fixtures/compareFootprinterVsKicad"
+import { convertCircuitJsonToPcbSvg } from "circuit-to-svg"
+
+test("parity/soj44", async () => {
+  const { combinedFootprintElements, booleanDifferenceSvg } =
+    await compareFootprinterVsKicad(
+      "soj44_w10.16mm_p1.27mm",
+      "Package_SO.pretty/SOJ-44_10.16x28.575mm_P1.27mm.circuit.json",
+    )
+
+  const svgContent = convertCircuitJsonToPcbSvg(combinedFootprintElements)
+  expect(svgContent).toMatchSvgSnapshot(import.meta.path, "soj44_parity")
+  expect(booleanDifferenceSvg).toMatchSvgSnapshot(
+    import.meta.path,
+    "soj44_parity._boolean_difference",
+  )
+})

tests/soj.test.ts

@@ -0,0 +1,12 @@
+import { test, expect } from "bun:test"
+import { convertCircuitJsonToPcbSvg } from "circuit-to-svg"
+import { fp } from "../src/footprinter"
+
+test("soj40_w18.3mm_p1.27mm", () => {
+  const soup = fp.string("soj40_w18.3mm_p1.27mm").circuitJson()
+  const svgContent = convertCircuitJsonToPcbSvg(soup)
+  expect(svgContent).toMatchSvgSnapshot(
+    import.meta.path,
+    "soj40_w18.3mm_p1.27mm",
+  )
+})