How to Record Dummy Wafer Consumption
Accounting for non-product wafers used for equipment stabilization and process monitoring in the fab.
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Manufacturing Overhead - Consumables | Debit | 12,500.00 | - |
| Dummy Wafer Inventory | Credit | - | 12,500.00 |
💡 Accountant's Note
Dummy wafers are used to maintain thermal equilibrium or protect tool surfaces and are expensed as consumed since they do not become part of the finished product.
Practitioner & Systems Framework
💻 ERP Architecture
Set up dummy wafers as non-valuated materials in the BOM or track via supply chain module for automatic expense on issue.
⚠️ Audit Flags
Significant variances between physical counts of dummy wafers and inventory records.
📄 Required Documentation
Material requisition forms and equipment usage logs indicating dummy wafer counts.
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