diff --git a/lib/schemas/easy-eda-json-schema.ts b/lib/schemas/easy-eda-json-schema.ts
index 5c516640..ad0d554c 100644
--- a/lib/schemas/easy-eda-json-schema.ts
+++ b/lib/schemas/easy-eda-json-schema.ts
@@ -11,7 +11,9 @@ export const maybeNumber = z
   .pipe(z.number().nullable().optional())
 
 export const SzlcscSchema = z.object({
-  id: z.number(),
+  // EasyEDA returns this id as a number for some parts and a string for others
+  // (e.g. C356849); the value is unused, so accept either to avoid import crashes.
+  id: z.union([z.number(), z.string()]),
   number: z.string(),
   step: z.number().optional(),
   min: z.number().optional(),
@@ -22,7 +24,7 @@ export const SzlcscSchema = z.object({
 })
 
 export const LcscSchema = z.object({
-  id: z.number(),
+  id: z.union([z.number(), z.string()]),
   number: z.string(),
   step: z.number().optional(),
   min: z.number().optional(),
diff --git a/tests/szlcsc-schema-id.test.ts b/tests/szlcsc-schema-id.test.ts
new file mode 100644
index 00000000..ac0fee45
--- /dev/null
+++ b/tests/szlcsc-schema-id.test.ts
@@ -0,0 +1,22 @@
+import { describe, expect, test } from "bun:test"
+import { SzlcscSchema, LcscSchema } from "lib/schemas/easy-eda-json-schema"
+
+// EasyEDA returns the szlcsc/lcsc `id` as a number for some parts and a string
+// for others (e.g. C356849), which used to crash `tsci import` on those parts.
+describe("szlcsc/lcsc id accepts number or string", () => {
+  for (const [name, schema] of [
+    ["SzlcscSchema", SzlcscSchema],
+    ["LcscSchema", LcscSchema],
+  ] as const) {
+    test(`${name} accepts a numeric id`, () => {
+      expect(schema.safeParse({ id: 2384679, number: "C356849" }).success).toBe(
+        true,
+      )
+    })
+    test(`${name} accepts a string id`, () => {
+      expect(
+        schema.safeParse({ id: "2384679", number: "C356849" }).success,
+      ).toBe(true)
+    })
+  }
+})