MPN (Manufacturer Part Number)
Definition
An MPN (Manufacturer Part Number) is the unique identifier a component manufacturer assigns to a specific part. It pins down the exact make, model, and often the package and grade, distinguishing one component from every other.
Why it matters
The MPN is the reliable key for sourcing. Distributor and internal part numbers differ from seller to seller, but the MPN is consistent across the whole market, so searching by MPN finds every source of a part and supports accurate cross-referencing. It ties each BOM line to a specific part from a specific manufacturer, which is the basis for lifecycle and compliance tracking.
Related terms
- BOM (Bill of Materials): where MPNs are recorded per line.
- OCM (Original Component Manufacturer): the party that assigns the MPN.
3E Technology lets you search by manufacturer part number to see every supplier that carries a part. See the component sourcing guide.
Frequently Asked Questions
What is an MPN?+
MPN stands for Manufacturer Part Number, the unique identifier a component manufacturer assigns to a specific part. It precisely identifies the make, model, and often the package and grade of a component, which is what makes accurate sourcing and cross-referencing possible.
Why is the MPN important for sourcing?+
Distributor part numbers vary by seller, but the MPN is consistent across the market, so it is the reliable key for finding every source of a part and for matching valid alternates. Searching by MPN avoids the ambiguity of descriptions or internal part numbers.
Related Resources
BOM (Bill of Materials)
A BOM is the complete list of components needed to build a product. Here's why the bill of materials is the starting point for sourcing and obsolescence work.
Cross-Reference (Alternate Part)
A cross-reference is a functionally equivalent replacement for a component. Here's why cross-referencing is often the fastest fix for an obsolete part.
OCM (Original Component Manufacturer)
An OCM is the company that actually manufactures a component, such as a semiconductor or connector maker. Here's how it differs from an OEM and a distributor.
Component Sourcing: A Practical Guide for Buyers
How component sourcing works: the four supplier channels, a step-by-step sourcing workflow, how to vet suppliers, and where to find sources others miss.
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