2026-07-13 One missing component can hold up an otherwise complete BOM. If your approved part is discontinued or no longer available through your usual channels, send EASYIEE the full manufacturer part number, required quantity and delivery date. We can review your enquiry for sourcing options, with exact-match requirements and proposed alternatives kept separate.
Need a sourcing review? Include the manufacturer, complete ordering code, quantity, acceptable date codes and any documentation requirements. Availability, condition, supporting documents and delivery terms must be confirmed for the specific offer.
First, check whether the part is actually obsolete
A distributor showing zero stock does not establish that a component has been discontinued. An active device may be on allocation or have a long lead time. Equally, a familiar product family may still be available while one package or temperature-grade variant has been withdrawn.
Check the manufacturer’s current product page and any discontinuation notice for the exact ordering code. Distinguish an active part from one marked not recommended for new designs, last time buy or obsolete. These labels call for different purchasing decisions; the manufacturer’s definitions and notice dates take precedence.
For example, Texas Instruments explains its product lifecycle categories separately. Do not treat an NRND designation as proof that production has already stopped.
What to send an obsolete electronic components supplier
A complete enquiry reduces avoidable back-and-forth. The package marking alone may not identify the full purchasing code, so include the original BOM line or datasheet when available.
- Exact manufacturer part number: include every suffix, plus the manufacturer and package.
- Quantity and schedule: state the immediate requirement, delivery deadline and whether partial deliveries are acceptable.
- Substitution policy: specify exact match only, approved alternatives only, or alternatives for engineering review.
- Condition and packaging: state your requirements for unused parts, original packaging, reel or tray format and lot consistency.
- Acceptance requirements: include date-code restrictions, traceability documents and any inspection or testing requirements before a quotation is prepared.
If several lines are affected, submit the complete BOM and mark the urgent items. Our electronic components sourcing guide covers the broader purchasing workflow.
Before accepting a quote, resolve these four questions
Is the offered part an exact match?
Compare the complete ordering code, not just the family name. A different suffix can change the package, operating temperature, lead finish or packing format. Ask for differences to be identified explicitly rather than hidden under an “equivalent” description.
What evidence supports the stated source and condition?
Ask what source information, labels, lot details and traceability records can actually be supplied. A product photograph or “new original” description alone does not establish authenticity. Where available, consider the original manufacturer, authorized distribution or an authorized aftermarket source before evaluating other supply channels.
What inspection or testing is included?
Agree on the scope before ordering. Visual inspection and electrical testing answer different questions; neither a generic test claim nor a photograph proves every device meets every specification. If testing is required, clarify the method, sampling, acceptance criteria, report availability, cost and effect on delivery. Do not assume these services are included in every offer.
What is the confirmed delivery commitment?
Separate an availability indication from a confirmed allocation. Ask about quantity, quotation validity, dispatch timing and any conditions attached to the offer. Inspection time and transport time should be considered separately when planning production.
An older date code is a question to investigate, not a verdict
Older inventory is common in discontinued-component sourcing. Date code alone does not tell you how a lot was stored, whether its packaging remains suitable or whether it meets your assembly requirements. Request the information relevant to that component, including packaging condition, storage records where available and moisture-handling requirements where applicable.
Apply the manufacturer’s guidance and your quality team’s acceptance criteria. TI’s product shelf-life guidance is one manufacturer-specific reference; it should not be treated as a blanket rule for every brand or component.
If the exact part cannot be sourced
The next step depends on the design. A validated repair BOM may require the original part, while a production redesign may allow a substitute after engineering review. Keep those paths separate.
For memory devices, check voltage, organization, interface commands, timing and firmware compatibility. For power devices, compare electrical ratings, thermal behavior, package and switching characteristics. A matching footprint or headline rating is not enough to approve a replacement.
Our SPI NOR Flash sourcing guide and MOSFET sourcing guide provide category-specific considerations. Any proposed alternative still needs approval for your actual circuit and operating conditions.
A useful RFQ is specific, even when the answer is uncertain
For a legacy control-board repair, for example, a useful enquiry would include the original BOM line, required quantity and deadline, then state: “Exact part required. Please identify the offered date code, packaging condition, available source documentation and delivery terms. List any alternatives separately for engineering review.” This is an enquiry example, not a completed customer case.
You can also search the EASYIEE component catalog by full part number. A catalog listing is a reference for your enquiry, not confirmation that a part is obsolete or currently in stock.
Send your part list for review. Whether you need one discontinued device for a repair or several difficult BOM lines for production, include the quantities and acceptance requirements from the start. This helps keep the discussion focused on a usable sourcing option rather than a similar-looking part.
