BOM sourcing
How to prepare a BOM for electronic component sourcing in China
A sourcing-ready BOM identifies each manufacturer part number, package, quantity, brand preference, alternative permission, destination, and required delivery window.
Procurement overview
How to prepare a BOM for electronic component sourcing in China
WMSIC accepts XLS, XLSX, and CSV files for organized multi-line review. Clear line-level requirements reduce clarification cycles and let the quotation record availability, substitutions, lead time, and commercial notes.
- Recommended input
- XLS, XLSX, or CSV
- Core identifiers
- MPN, package, brand, quantity
- Review output
- Availability, alternatives, lead time, quotation notes
Fields to include on every BOM line
Use one row per requested component and preserve the original part number exactly as used by the manufacturer or previous purchase record.
- Manufacturer part number and preferred brand
- Package, footprint, grade, and critical parameters
- Required quantity and acceptable order multiple
- Approved-alternative status and restricted brands
- Target delivery date and destination country
How WMSIC organizes the review
The RFQ workflow checks catalog records, package visuals, known model fields, sourcing routes, and open questions. Lines with uncertain suffixes or packages are returned for confirmation before quotation.
- Normalize duplicate and incomplete lines
- Separate exact-match and alternative requests
- Record package and quantity questions
- Consolidate sourcing and shipment notes
Decision points for critical components
State traceability, date-code, condition, testing, lifecycle, and approved-vendor requirements before sourcing begins. These requirements determine which channels can be reviewed.
- Exact manufacturer authorization requirement
- Date-code or lot restrictions
- Inspection or testing request
- Production, repair, prototype, or replenishment use
BOM sourcing
Buyer questions
Can I submit a BOM with missing package information?
Yes. Mark the package as unknown and attach a previous label, board photo, datasheet reference, or purchase record so the open point can be reviewed.
Can one BOM contain exact parts and approved alternatives?
Yes. Add an alternative-permission column for each line and list any restricted brands, packages, or parameters.
Can WMSIC review a single part number?
Yes. The same RFQ workflow supports one model, several lines, or a complete BOM.
BOM sourcing
Send an RFQ-ready BOM.
Upload the file and include the destination, required date, package constraints, and alternative policy.