From 807040e47498f38e8c7f1df038c2be71af598471 Mon Sep 17 00:00:00 2001
From: singularitycurse26-svg <singularitycurse26-svg@users.noreply.github.com>
Date: Sun, 19 Jul 2026 03:13:42 -0500
Subject: [PATCH] feat: add pdip footprint (PDIP-8)

Add pdip footprint function as alias for dip with PDIP defaults.
PDIP (Plastic Dual Inline Package) uses same layout as DIP with
standard 300mil width and 2.54mm pitch.

Closes #371

/claim #371
---
 src/fn/index.ts    |  1 +
 src/fn/pdip.ts     | 24 ++++++++++++++++++++++++
 src/footprinter.ts |  3 +++
 tests/pdip.test.ts | 35 +++++++++++++++++++++++++++++++++++
 4 files changed, 63 insertions(+)
 create mode 100644 src/fn/pdip.ts
 create mode 100644 tests/pdip.test.ts

diff --git a/src/fn/index.ts b/src/fn/index.ts
index b5904c5b..2d635853 100644
--- a/src/fn/index.ts
+++ b/src/fn/index.ts
@@ -84,3 +84,4 @@ export { sot343 } from "./sot343"
 export { m2host } from "./m2host"
 export { mountedpcbmodule } from "./mountedpcbmodule"
 export { to92l } from "./to92l"
+export { pdip } from "./pdip"
diff --git a/src/fn/pdip.ts b/src/fn/pdip.ts
new file mode 100644
index 00000000..ab8a51ce
--- /dev/null
+++ b/src/fn/pdip.ts
@@ -0,0 +1,24 @@
+import { dip, extendDipDef } from "./dip"
+import { z } from "zod"
+
+export const pdip_def = extendDipDef({ w: "300mil", p: "2.54mm" }).extend({
+  fn: z.string(),
+})
+
+export const pdip = (raw_params: {
+  pdip: true
+  num_pins: number
+  w: number
+  p?: number
+  id?: string | number
+  od?: string | number
+}) => {
+  return dip({
+    dip: true,
+    num_pins: raw_params.num_pins,
+    w: raw_params.w,
+    p: raw_params.p,
+    id: raw_params.id,
+    od: raw_params.od,
+  })
+}
diff --git a/src/footprinter.ts b/src/footprinter.ts
index ac09348d..458d2d96 100644
--- a/src/footprinter.ts
+++ b/src/footprinter.ts
@@ -40,6 +40,9 @@ export type Footprinter = {
   dip: (
     num_pins?: number,
   ) => FootprinterParamsBuilder<"w" | "p" | "id" | "od" | "wide" | "narrow">
+  pdip: (
+    num_pins?: number,
+  ) => FootprinterParamsBuilder<"w" | "p" | "id" | "od" | "wide" | "narrow">
   cap: () => FootprinterParamsBuilder<CommonPassiveOptionKey>
   crystal: (
     num_pins?: number,
diff --git a/tests/pdip.test.ts b/tests/pdip.test.ts
new file mode 100644
index 00000000..79824add
--- /dev/null
+++ b/tests/pdip.test.ts
@@ -0,0 +1,35 @@
+import { test, expect } from "bun:test"
+import { convertCircuitJsonToPcbSvg } from "circuit-to-svg"
+import { fp } from "../src/footprinter"
+import type { AnyCircuitElement } from "circuit-json"
+
+test("pdip8", () => {
+  const circuitJson = fp.string("pdip8").circuitJson() as AnyCircuitElement[]
+  const svgContent = convertCircuitJsonToPcbSvg(circuitJson)
+  expect(svgContent).toMatchSvgSnapshot(import.meta.path, "pdip8")
+})
+
+test("pdip8 matches dip8 with same defaults", () => {
+  const pdipJson = fp.string("pdip8").json()
+  const dipJson = fp.string("dip8").json()
+
+  expect(pdipJson.num_pins).toBe(8)
+  expect(pdipJson.w).toBe(dipJson.w)
+  expect(pdipJson.p).toBe(dipJson.p)
+  expect(pdipJson.id).toBe(dipJson.id)
+  expect(pdipJson.od).toBe(dipJson.od)
+})
+
+test("pdip8 with custom width", () => {
+  const circuitJson = fp
+    .string("pdip8_w7.62mm")
+    .circuitJson() as AnyCircuitElement[]
+  const svgContent = convertCircuitJsonToPcbSvg(circuitJson)
+  expect(svgContent).toMatchSvgSnapshot(import.meta.path, "pdip8_w7.62mm")
+})
+
+test("pdip14", () => {
+  const circuitJson = fp.string("pdip14").circuitJson() as AnyCircuitElement[]
+  const svgContent = convertCircuitJsonToPcbSvg(circuitJson)
+  expect(svgContent).toMatchSvgSnapshot(import.meta.path, "pdip14")
+})