diff --git a/BoM/Axio4_Nexio_Conduent Subsystem Cost Analysis.xlsx b/BoM/Axio4_Nexio_Conduent Subsystem Cost Analysis.xlsx
index 7eaff75..7a7930c 100644
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diff --git a/OCTO/octo_1.xlsx b/OCTO/octo_1.xlsx
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diff --git a/OCTO/octo_2.xlsx b/OCTO/octo_2.xlsx
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diff --git a/OCTO/octo_3.xlsx b/OCTO/octo_3.xlsx
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diff --git a/OUTPUT/bom_parts_1_of_3.xlsx b/OUTPUT/bom_parts_1_of_3.xlsx
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diff --git a/OUTPUT/bom_parts_2_of_3.xlsx b/OUTPUT/bom_parts_2_of_3.xlsx
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diff --git a/OUTPUT/bom_parts_3_of_3.xlsx b/OUTPUT/bom_parts_3_of_3.xlsx
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diff --git a/bom_extract.py b/bom_extract.py
index 2f5d64e..820adfa 100644
--- a/bom_extract.py
+++ b/bom_extract.py
@@ -161,6 +161,23 @@ def write_chunks(parts: list[tuple[str, str]], output_dir: Path) -> None:
     log.info(f"Done – {total} unique parts across {n_files} file(s) in {output_dir}/")
 
 
+def write_siliconexpert(parts: list[tuple[str, str]], output_dir: Path) -> None:
+    output_dir.mkdir(exist_ok=True)
+
+    df  = pd.DataFrame(parts, columns=["Manufacturer", "MPN"])
+    df.sort_values(["Manufacturer", "MPN"], inplace=True, ignore_index=True)
+    out = output_dir / "siliconexpert.xlsx"
+
+    with pd.ExcelWriter(out, engine="openpyxl") as writer:
+        df.to_excel(writer, index=False, sheet_name="Parts")
+        ws = writer.sheets["Parts"]
+        for col in ws.columns:
+            width = max(len(str(cell.value or "")) for cell in col)
+            ws.column_dimensions[col[0].column_letter].width = min(width + 3, 60)
+
+    log.info(f"  Written → {out}  ({len(df)} parts)")
+
+
 if __name__ == "__main__":
     if not BOM_DIR.exists():
         log.error(f"BoM directory '{BOM_DIR}' not found.")
@@ -168,3 +185,4 @@ if __name__ == "__main__":
 
     parts = extract(BOM_DIR)
     write_chunks(parts, OUTPUT_DIR)
+    write_siliconexpert(parts, OUTPUT_DIR)