Are older date codes automatically unsuitable?

No universal conclusion follows from age alone. Assess the manufacturer guidance, storage and packaging history, programme requirements and acceptance criteria for the actual lot.

Can a date code prove authenticity?

No. It supports identification and comparison, but it does not establish the complete supply history or authenticity. Review the relevant source evidence and agreed verification scope.

What if source documents are missing?

Ask the seller to state the gap explicitly. Your purchasing and quality teams should decide whether the available evidence and any further agreed review meet the application requirements.

Date Codes & Traceability: What Buyers Should Ask

1. Ask what the code identifies

Record the manufacturer, full ordering code and the label or marking that contains the date or lot identifier. Manufacturers use different formats, and a marking may contain other production or trace references. Do not assume every four-character value has the same meaning.

Ask for a legible photo and any applicable manufacturer explanation. If several codes are included in one offer, request a breakdown or a clearly described range. Preserve the relation between the code, the packaging and the quoted quantity.

A strict date restriction should have an identifiable reason, such as a programme requirement. Explain the requirement in the RFQ rather than writing “latest date code” without a defined limit. If the quoted lot does not meet it, decide whether an authorised programme owner can review the deviation.

Identify the actual label or package marking.
Link each code to a quoted line or lot.
Describe mixed lots explicitly.
Define any required date restriction and approval route.

2. Review packaging and storage separately from age

Ask whether the material remains sealed, was opened, was partially used or has been repackaged. Packing format and condition are separate fields: “tape and reel” does not necessarily mean a sealed original reel. Record what is known about handling and any gaps in the history.

TI’s shelf-life guidance explains that customer storage and handling, moisture sensitivity and packaging affect usable storage life. Its controlled-storage findings should not be used to assume that an unrelated surplus lot was stored properly. A manufacturing date alone is not a complete condition assessment.

For moisture-sensitive material, refer to the device and packaging instructions relevant to the actual part. Ask about the available bag, label and handling records. Your receiving and production teams should determine the appropriate review under their procedures rather than applying a universal baking or expiry rule.

Packing type and actual sealed/opened/repacked condition.
Available storage or handling records.
Moisture-sensitive packaging information where applicable.
Requirements from the specific device and your production process.

3. Make traceability deliverables specific

Traceability is a chain of evidence connecting the offered material with its identified lot and supply history. Ask which relevant purchase, delivery or incoming-review records are available. A generic certificate that does not relate to the lot answers a different question.

Separate manufacturer-issued information, supporting records and seller declarations. State which documents are required for acceptance and which are useful but optional. If records are unavailable or cannot be shared, identify the gap before considering whether another review arrangement is acceptable.

Specify any inspection or independent verification with an agreed scope. Identify who performs it, which samples or quantities are covered, what the report must contain and how discrepancies are handled. Do not turn the word “tested” into an assumption that every device and every parameter was examined.

Required lot references and document types.
Available evidence versus declared information.
Responsibility, scope and reporting for further checks.
Written handling of missing records or failed acceptance.

4. Preserve lot identity at receipt

Compare the delivered parts, containers, quantities and records with the accepted offer. Keep mixed lots distinguishable in the receiving process. If the shipping documents describe one lot but the containers show several, record the discrepancy and seek clarification before release.

Preserve the evidence needed to follow the material into the next stage of your process. Repackaging or splitting a lot should not erase the identifiers your organisation needs. Follow your approved receiving and quality procedures for any hold, discrepancy or further review.

When contacting icultra, include the exact MPN, quantity and delivery destination, plus your required date range and traceability deliverables. Explain which conditions are essential to the programme. The quotation can then address the offered lot and the known evidence gaps; no website statement should substitute for that part-specific agreement.

Sources and further reading

Manufacturer documents support the technical guidance above. They do not confirm our stock, authorisation or the condition of any offered lot.