Before buying scarce components, check the supply path

Start with the manufacturer's sales channels

A controller build is waiting for one semiconductor, and an unfamiliar seller claims immediate stock. Begin with the exact manufacturer part number and the manufacturer's own sales-channel information. Do not treat a distributor logo on the seller's website as independent confirmation of authorization.

Texas Instruments recommends buying directly or through its authorized distributors. TI warns that parts outside those channels may be counterfeit or unreliable and are outside its warranty and customer-support coverage. Analog Devices identifies its authorized network as a route to authentic products with manufacturer support. Check the applicable manufacturer's current policy rather than assuming those terms are identical for every brand.

Separate authorization from the offered lot

Record who will invoice you, who holds the goods and where they will ship from. Ask whether the offer comes through the claimed authorized channel or a separate resale transaction. A seller's general status and the provenance of a particular lot are different questions.

Request documents that connect the offered goods to their upstream source. Identify the issuer, part number, quantity and lot references, and flag gaps between records. Supplier-provided paperwork is evidence to examine, not an automatic authenticity finding. TI notes that counterfeit markings and labels can resemble genuine ones; a convincing photograph alone cannot close the question.

Use a short source-review checklist

This is RivetBridge's purchasing framework, not an authentication procedure. Adapt it with your engineering and quality owners before committing funds.

• Match the full orderable part number, package and required grade to the approved bill of materials; keep substitutions separate.
• Check channel authorization against the manufacturer's current information. Save the source and review date, and resolve ambiguous names through the manufacturer.
• Identify the actual seller, ship-from location, offered quantity and whether stock is held or still being sourced.
• Request upstream purchase and shipment records linked to the offered lot. Mark missing custody steps or mismatched identifiers explicitly.
• Ask about stated condition, packaging, storage and handling history. Have quality define the evidence needed for the intended use.
• Record warranty and return terms, inspection access and who approves unresolved risk. Refer contractual interpretation to the appropriate adviser.

An illustrative offer with a missing link

A fictional reader manufacturer receives an offer for 600 components. The seller supplies photographs and a certificate bearing its own name, but no records connecting that lot to the claimed upstream distributor. Purchasing records 'source chain incomplete,' not 'counterfeit' and not 'approved.'

The next step is to request the missing link and compare available manufacturer-authorized options. If an exception is still proposed, engineering and quality must define the assessment and its limits. Do not promise that a quick functional test will establish authenticity or recover manufacturer support.

Finish with an explicit purchasing decision

Keep the offer on hold while required evidence remains unresolved. Your record should identify what is known, what is only seller-stated, the available alternatives and the person authorized to decide. A shortage deadline does not silently waive the buyer's controls.

If goods arrive, preserve their lot identity and route discrepancies to the agreed quality process before production use. Procurement can organize documents and questions; authentication, specialist testing and release decisions require the appropriate qualified owners.