From 9fb98e9ddefb6b88bef1c6b97db966f20135a180 Mon Sep 17 00:00:00 2001
From: Santosh Kumar <56650638+santosh-kumar-git@users.noreply.github.com>
Date: Tue, 15 Sep 2026 12:29:19 +0530
Subject: [PATCH] fix: honor length units in SOD pad dimensions

---
 src/fn/sod110.ts                              |  6 +-
 src/fn/sod123.ts                              |  6 +-
 src/fn/sod123fl.ts                            |  6 +-
 src/fn/sod123w.ts                             |  6 +-
 src/fn/sod128.ts                              |  6 +-
 src/fn/sod323f.ts                             |  6 +-
 src/fn/sod323fl.ts                            |  6 +-
 src/fn/sod323w.ts                             |  6 +-
 src/fn/sod723.ts                              |  6 +-
 src/fn/sod80.ts                               |  6 +-
 src/fn/sod882.ts                              |  6 +-
 src/fn/sod882d.ts                             |  6 +-
 .../sod110-inch-dimensions.snap.svg           |  1 +
 .../sod123-inch-dimensions.snap.svg           |  1 +
 .../sod123fl-inch-dimensions.snap.svg         |  1 +
 .../sod123w-inch-dimensions.snap.svg          |  1 +
 .../sod128-inch-dimensions.snap.svg           |  1 +
 .../sod323f-inch-dimensions.snap.svg          |  1 +
 .../sod323fl-inch-dimensions.snap.svg         |  1 +
 .../sod323w-inch-dimensions.snap.svg          |  1 +
 .../sod723-inch-dimensions.snap.svg           |  1 +
 .../sod80-inch-dimensions.snap.svg            |  1 +
 .../sod882-inch-dimensions.snap.svg           |  1 +
 .../sod882d-inch-dimensions.snap.svg          |  1 +
 tests/sod-length-units.test.ts                | 79 +++++++++++++++++++
 25 files changed, 127 insertions(+), 36 deletions(-)
 create mode 100644 tests/__snapshots__/sod110-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod123-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod123fl-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod123w-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod128-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod323f-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod323fl-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod323w-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod723-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod80-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod882-inch-dimensions.snap.svg
 create mode 100644 tests/__snapshots__/sod882d-inch-dimensions.snap.svg
 create mode 100644 tests/sod-length-units.test.ts

diff --git a/src/fn/sod110.ts b/src/fn/sod110.ts
index e90bd4627..46bc1d9df 100644
--- a/src/fn/sod110.ts
+++ b/src/fn/sod110.ts
@@ -98,15 +98,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      p: Number.parseFloat(parameters.p),
+      p: length.parse(parameters.p),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
         0.1,
       ),
     )
diff --git a/src/fn/sod123.ts b/src/fn/sod123.ts
index 350726abb..81ecccae1 100644
--- a/src/fn/sod123.ts
+++ b/src/fn/sod123.ts
@@ -69,15 +69,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      p: Number.parseFloat(parameters.p),
+      p: length.parse(parameters.p),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
         0.1125,
       ),
     )
diff --git a/src/fn/sod123fl.ts b/src/fn/sod123fl.ts
index 5f605b049..ab9819f75 100644
--- a/src/fn/sod123fl.ts
+++ b/src/fn/sod123fl.ts
@@ -104,15 +104,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod123FL_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      p: Number.parseFloat(parameters.p),
+      p: length.parse(parameters.p),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
       ),
     )
   }
diff --git a/src/fn/sod123w.ts b/src/fn/sod123w.ts
index 6f2c23d4d..7c9177bfd 100644
--- a/src/fn/sod123w.ts
+++ b/src/fn/sod123w.ts
@@ -102,15 +102,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      p: Number.parseFloat(parameters.p),
+      p: length.parse(parameters.p),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
       ),
     )
   }
diff --git a/src/fn/sod128.ts b/src/fn/sod128.ts
index d49176aa9..faf36ae64 100644
--- a/src/fn/sod128.ts
+++ b/src/fn/sod128.ts
@@ -104,15 +104,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      p: Number.parseFloat(parameters.p),
+      p: length.parse(parameters.p),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
         0.125,
       ),
     )
diff --git a/src/fn/sod323f.ts b/src/fn/sod323f.ts
index e4cba95e5..b2a356772 100644
--- a/src/fn/sod323f.ts
+++ b/src/fn/sod323f.ts
@@ -104,15 +104,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      pad_spacing: Number.parseFloat(parameters.pad_spacing),
+      pad_spacing: length.parse(parameters.pad_spacing),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
         0.0625,
       ),
     )
diff --git a/src/fn/sod323fl.ts b/src/fn/sod323fl.ts
index 0d39af841..e332b58b2 100644
--- a/src/fn/sod323fl.ts
+++ b/src/fn/sod323fl.ts
@@ -104,15 +104,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod323FL_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      pad_spacing: Number.parseFloat(parameters.pad_spacing),
+      pad_spacing: length.parse(parameters.pad_spacing),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
       ),
     )
   }
diff --git a/src/fn/sod323w.ts b/src/fn/sod323w.ts
index b8d12539c..b39989912 100644
--- a/src/fn/sod323w.ts
+++ b/src/fn/sod323w.ts
@@ -104,15 +104,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod323w_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      pad_spacing: Number.parseFloat(parameters.pad_spacing),
+      pad_spacing: length.parse(parameters.pad_spacing),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
       ),
     )
   }
diff --git a/src/fn/sod723.ts b/src/fn/sod723.ts
index 716d50579..9ea53c90c 100644
--- a/src/fn/sod723.ts
+++ b/src/fn/sod723.ts
@@ -103,15 +103,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      p: Number.parseFloat(parameters.p),
+      p: length.parse(parameters.p),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
       ),
     )
   }
diff --git a/src/fn/sod80.ts b/src/fn/sod80.ts
index 02b83d546..c4b835f85 100644
--- a/src/fn/sod80.ts
+++ b/src/fn/sod80.ts
@@ -96,15 +96,15 @@ export const sod80WithoutParsing = (parameters: z.infer<typeof sod80_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getsod80Coords({
       pn: i,
-      p: Number.parseFloat(parameters.p),
+      p: length.parse(parameters.p),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
       ),
     )
   }
diff --git a/src/fn/sod882.ts b/src/fn/sod882.ts
index f996fc10c..02d532a97 100644
--- a/src/fn/sod882.ts
+++ b/src/fn/sod882.ts
@@ -104,15 +104,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      p: Number.parseFloat(parameters.p),
+      p: length.parse(parameters.p),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
         0.025,
       ),
     )
diff --git a/src/fn/sod882d.ts b/src/fn/sod882d.ts
index 6a8b382bf..342b6fc15 100644
--- a/src/fn/sod882d.ts
+++ b/src/fn/sod882d.ts
@@ -104,15 +104,15 @@ export const sodWithoutParsing = (parameters: z.infer<typeof sod_def>) => {
   for (let i = 1; i <= parameters.num_pins; i++) {
     const { x, y } = getSodCoords({
       pn: i,
-      p: Number.parseFloat(parameters.p),
+      p: length.parse(parameters.p),
     })
     pads.push(
       rectpad(
         i,
         x,
         y,
-        Number.parseFloat(parameters.pl),
-        Number.parseFloat(parameters.pw),
+        length.parse(parameters.pl),
+        length.parse(parameters.pw),
         0.0625,
       ),
     )
diff --git a/tests/__snapshots__/sod110-inch-dimensions.snap.svg b/tests/__snapshots__/sod110-inch-dimensions.snap.svg
new file mode 100644
index 000000000..659fd80b8
--- /dev/null
+++ b/tests/__snapshots__/sod110-inch-dimensions.snap.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="800" height="600"><style></style><rect class="boundary" x="0" y="0" fill="#000" width="800" height="600" data-type="pcb_background" data-pcb-layer="global"/><rect class="pcb-boundary" fill="none" stroke="#fff" stroke-width="0.3" x="173.28571428571428" y="142.8571428571428" width="453.4285714285715" height="314.28571428571433" data-type="pcb_boundary" data-pcb-layer="global"/><rect class="pcb-pad" fill="rgb(200, 52, 52)" x="191.28571428571428" y="317.5714285714285" width="72.57142857142857" height="36.285714285714285" data-type="pcb_smtpad" data-pcb-layer="top" rx="14.285714285714286" ry="14.285714285714286"/><rect class="pcb-pad" fill="rgb(200, 52, 52)" x="554.1428571428571" y="317.5714285714285" width="72.57142857142857" height="36.285714285714285" data-type="pcb_smtpad" data-pcb-layer="top" rx="14.285714285714286" ry="14.285714285714286"/><path class="pcb-silkscreen pcb-silkscreen-top" d="M 590.4285714285714 214.28571428571422 L 173.28571428571428 214.28571428571422 L 173.28571428571428 457.1428571428571 L 590.4285714285714 457.1428571428571" fill="none" stroke="#f2eda1" stroke-width="14.285714285714286" stroke-linecap="round" stroke-linejoin="round" data-pcb-component-id="" data-pcb-silkscreen-path-id="" data-type="pcb_silkscreen_path" data-pcb-layer="top"/><text x="0" y="0" dx="0" dy="0" fill="#f2eda1" font-family="Arial, sans-serif" font-size="42.857142857142854" text-anchor="middle" dominant-baseline="central" transform="matrix(1,0,0,1,409,142.8571428571428)" class="pcb-silkscreen-text pcb-silkscreen-top" data-pcb-silkscreen-text-id="silkscreen_text_1" stroke="none" data-type="pcb_silkscreen_text" data-pcb-layer="top">{REF}</text><path class="pcb-fabrication-note-path" stroke="rgba(255,255,255,0.5)" fill="none" d="M 396.3 335.71428571428567 L 400.872 335.71428571428567" stroke-width="1.4285714285714286" data-pcb-component-id="" data-pcb-fabrication-note-path-id="diode_fabrication_note_anode_leg" data-type="pcb_fabrication_note_path" data-pcb-layer="overlay"/><path class="pcb-fabrication-note-path" stroke="rgba(255,255,255,0.5)" fill="none" d="M 400.872 325.55428571428564 L 417.128 335.71428571428567 L 400.872 345.8742857142857 Z" stroke-width="1.4285714285714286" data-pcb-component-id="" data-pcb-fabrication-note-path-id="diode_fabrication_note_triangle" data-type="pcb_fabrication_note_path" data-pcb-layer="overlay"/><path class="pcb-fabrication-note-path" stroke="rgba(255,255,255,0.5)" fill="none" d="M 417.128 325.55428571428564 L 417.128 345.8742857142857" stroke-width="1.4285714285714286" data-pcb-component-id="" data-pcb-fabrication-note-path-id="diode_fabrication_note_cathode" data-type="pcb_fabrication_note_path" data-pcb-layer="overlay"/><path class="pcb-fabrication-note-path" stroke="rgba(255,255,255,0.5)" fill="none" d="M 417.128 335.71428571428567 L 421.7 335.71428571428567" stroke-width="1.4285714285714286" data-pcb-component-id="" data-pcb-fabrication-note-path-id="diode_fabrication_note_cathode_leg" data-type="pcb_fabrication_note_path" data-pcb-layer="overlay"/><text x="0" y="0" font-family="Arial, sans-serif" font-size="14.285714285714286" text-anchor="middle" dominant-baseline="central" transform="matrix(1,0,0,1,245.7142857142857,335.71428571428567)" class="pcb-fabrication-note-text" fill="rgba(255,255,255,0.5)" data-type="pcb_fabrication_note_text" data-pcb-layer="overlay">+</text><text x="0" y="0" font-family="Arial, sans-serif" font-size="14.285714285714286" text-anchor="middle" dominant-baseline="central" transform="matrix(1,0,0,1,572.2857142857143,335.71428571428567)" class="pcb-fabrication-note-text" fill="rgba(255,255,255,0.5)" data-type="pcb_fabrication_note_text" data-pcb-layer="overlay">-</text></svg>
\ No newline at end of file
diff --git a/tests/__snapshots__/sod123-inch-dimensions.snap.svg b/tests/__snapshots__/sod123-inch-dimensions.snap.svg
new file mode 100644
index 000000000..3e678ca01
--- /dev/null
+++ b/tests/__snapshots__/sod123-inch-dimensions.snap.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="800" height="600"><style></style><rect class="boundary" x="0" y="0" fill="#000" width="800" height="600" data-type="pcb_background" data-pcb-layer="global"/><rect class="pcb-boundary" fill="none" stroke="#fff" stroke-width="0.3" x="158.4786053882726" y="234.0729001584786" width="483.04278922345475" height="131.8541996830428" data-type="pcb_boundary" data-pcb-layer="global"/><rect class="pcb-pad" fill="rgb(200, 52, 52)" x="158.4786053882726" y="325.67353407290017" width="80.50713153724247" height="40.253565768621236" data-type="pcb_smtpad" data-pcb-layer="top" rx="17.828843106180663" ry="17.828843106180663"/><rect class="pcb-pad" fill="rgb(200, 52, 52)" x="561.0142630744849" y="325.67353407290017" width="80.50713153724247" height="40.253565768621236" data-type="pcb_smtpad" data-pcb-layer="top" rx="17.828843106180663" ry="17.828843106180663"/><text x="0" y="0" dx="0" dy="0" fill="#f2eda1" font-family="Arial, sans-serif" font-size="47.54358161648177" text-anchor="middle" dominant-baseline="central" transform="matrix(1,0,0,1,400,234.0729001584786)" class="pcb-silkscreen-text pcb-silkscreen-top" data-pcb-silkscreen-text-id="silkscreen_text_1" stroke="none" data-type="pcb_silkscreen_text" data-pcb-layer="top">{REF}</text><path class="pcb-fabrication-note-path" stroke="rgba(255,255,255,0.5)" fill="none" d="M 385.91125198098257 345.8003169572108 L 390.98320126782886 345.8003169572108" stroke-width="1.5847860538827256" data-pcb-component-id="" data-pcb-fabrication-note-path-id="diode_fabrication_note_anode_leg" data-type="pcb_fabrication_note_path" data-pcb-layer="overlay"/><path class="pcb-fabrication-note-path" stroke="rgba(255,255,255,0.5)" fill="none" d="M 390.98320126782886 334.5293185419968 L 409.01679873217114 345.8003169572108 L 390.98320126782886 357.07131537242475 Z" stroke-width="1.5847860538827256" data-pcb-component-id="" data-pcb-fabrication-note-path-id="diode_fabrication_note_triangle" data-type="pcb_fabrication_note_path" data-pcb-layer="overlay"/><path class="pcb-fabrication-note-path" stroke="rgba(255,255,255,0.5)" fill="none" d="M 409.01679873217114 334.5293185419968 L 409.01679873217114 357.07131537242475" stroke-width="1.5847860538827256" data-pcb-component-id="" data-pcb-fabrication-note-path-id="diode_fabrication_note_cathode" data-type="pcb_fabrication_note_path" data-pcb-layer="overlay"/><path class="pcb-fabrication-note-path" stroke="rgba(255,255,255,0.5)" fill="none" d="M 409.01679873217114 345.8003169572108 L 414.08874801901743 345.8003169572108" stroke-width="1.5847860538827256" data-pcb-component-id="" data-pcb-fabrication-note-path-id="diode_fabrication_note_cathode_leg" data-type="pcb_fabrication_note_path" data-pcb-layer="overlay"/><text x="0" y="0" font-family="Arial, sans-serif" font-size="15.847860538827257" text-anchor="middle" dominant-baseline="central" transform="matrix(1,0,0,1,218.85895404120444,345.8003169572108)" class="pcb-fabrication-note-text" fill="rgba(255,255,255,0.5)" data-type="pcb_fabrication_note_text" data-pcb-layer="overlay">+</text><text x="0" y="0" font-family="Arial, sans-serif" font-size="15.847860538827257" text-anchor="middle" dominant-baseline="central" transform="matrix(1,0,0,1,581.1410459587955,345.8003169572108)" class="pcb-fabrication-note-text" fill="rgba(255,255,255,0.5)" data-type="pcb_fabrication_note_text" data-pcb-layer="overlay">-</text></svg>
\ No newline at end of file
diff --git a/tests/__snapshots__/sod123fl-inch-dimensions.snap.svg b/tests/__snapshots__/sod123fl-inch-dimensions.snap.svg
new file mode 100644
index 000000000..93c27391a
--- /dev/null
+++ b/tests/__snapshots__/sod123fl-inch-dimensions.snap.svg
@@ -0,0 +1 @@
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diff --git a/tests/__snapshots__/sod123w-inch-dimensions.snap.svg b/tests/__snapshots__/sod123w-inch-dimensions.snap.svg
new file mode 100644
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diff --git a/tests/__snapshots__/sod128-inch-dimensions.snap.svg b/tests/__snapshots__/sod128-inch-dimensions.snap.svg
new file mode 100644
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diff --git a/tests/__snapshots__/sod323f-inch-dimensions.snap.svg b/tests/__snapshots__/sod323f-inch-dimensions.snap.svg
new file mode 100644
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diff --git a/tests/__snapshots__/sod323fl-inch-dimensions.snap.svg b/tests/__snapshots__/sod323fl-inch-dimensions.snap.svg
new file mode 100644
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diff --git a/tests/__snapshots__/sod323w-inch-dimensions.snap.svg b/tests/__snapshots__/sod323w-inch-dimensions.snap.svg
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new file mode 100644
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diff --git a/tests/__snapshots__/sod80-inch-dimensions.snap.svg b/tests/__snapshots__/sod80-inch-dimensions.snap.svg
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diff --git a/tests/__snapshots__/sod882-inch-dimensions.snap.svg b/tests/__snapshots__/sod882-inch-dimensions.snap.svg
new file mode 100644
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diff --git a/tests/__snapshots__/sod882d-inch-dimensions.snap.svg b/tests/__snapshots__/sod882d-inch-dimensions.snap.svg
new file mode 100644
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diff --git a/tests/sod-length-units.test.ts b/tests/sod-length-units.test.ts
new file mode 100644
index 000000000..5ded17b63
--- /dev/null
+++ b/tests/sod-length-units.test.ts
@@ -0,0 +1,79 @@
+import { expect, test } from "bun:test"
+import { convertCircuitJsonToPcbSvg } from "circuit-to-svg"
+import { fp } from "../src/footprinter"
+import {
+  sod110,
+  sod123,
+  sod123fl,
+  sod123w,
+  sod128,
+  sod323f,
+  sod323fl,
+  sod323w,
+  sod723,
+  sod80,
+  sod882,
+  sod882d,
+} from "../src/fn"
+
+const variants = [
+  ["sod110", sod110, "p"],
+  ["sod123", sod123, "p"],
+  ["sod123fl", sod123fl, "p"],
+  ["sod123w", sod123w, "p"],
+  ["sod128", sod128, "p"],
+  ["sod323f", sod323f, "pad_spacing"],
+  ["sod323fl", sod323fl, "pad_spacing"],
+  ["sod323w", sod323w, "pad_spacing"],
+  ["sod723", sod723, "p"],
+  ["sod80", sod80, "p"],
+  ["sod882", sod882, "p"],
+  ["sod882d", sod882d, "p"],
+] as const
+
+for (const [name, generate, pitchParameter] of variants) {
+  test(`${name} converts inch pad dimensions and pitch to millimeters`, () => {
+    const { circuitJson } = generate({
+      fn: name,
+      pl: "0.02in",
+      pw: "0.01in",
+      [pitchParameter]: "0.1in",
+    })
+    const pads = circuitJson.filter((element) => element.type === "pcb_smtpad")
+
+    expect(pads).toMatchObject([
+      {
+        port_hints: ["1"],
+        x: -1.27,
+        y: 0,
+        width: 0.508,
+        height: 0.254,
+      },
+      {
+        port_hints: ["2"],
+        x: 1.27,
+        y: 0,
+        width: 0.508,
+        height: 0.254,
+      },
+    ])
+    expect(convertCircuitJsonToPcbSvg(circuitJson)).toMatchSvgSnapshot(
+      import.meta.path,
+      `${name}-inch-dimensions`,
+    )
+  })
+}
+
+test("SOD string definitions preserve physical dimensions expressed in mils", () => {
+  const circuitJson = fp.string("sod123_pl20mil_pw10mil_p100mil").circuitJson()
+  const pads = circuitJson.filter((element) => element.type === "pcb_smtpad")
+
+  expect(pads).toMatchObject([
+    { x: -1.27, width: 0.508, height: 0.254 },
+    { x: 1.27, width: 0.508, height: 0.254 },
+  ])
+  expect(convertCircuitJsonToPcbSvg(circuitJson)).toMatchSvgSnapshot(
+    import.meta.path,
+    "sod123-inch-dimensions",
+  )
+})