PCNshark
Alternate Part Management

Give engineering a better place to start when a component needs replacing.

When a PCN or EOL notice takes a component off the table, someone has to find what replaces it. Starting that search from a blank parametric filter throws away what the notice itself, your BOMs, and your own past decisions already tell you.

PCNshark surfaces the manufacturer-recommended replacement extracted from the notice and functional candidates ranked by specification similarity — and keeps sourcing context, datasheets, BOM exposure, and the final decision together on one organization-wide component record. Alternate recommendations are available on Team plans and above.

Available on Starter and Team. A payment method is required.

Scope

PCNshark narrows the search and organizes the evidence. Similarity is a prioritization signal, not engineering qualification — your engineering team owns compatibility review, qualification, and the final approval.

Reviewed by the PCNshark product teamLast reviewed
§ Self-check

Does every replacement search start from zero?

Select what applies. Your answers stay in your browser and are never transmitted.

Does every replacement search start from zero?

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See the replacement the manufacturer actually suggested

Discontinuation and change notices often name a successor — a recommended replacement or migration part, sometimes buried deep in the PDF. That suggestion is the single most useful starting point a replacement search has, and it is routinely lost in a folder.

A manufacturer recommendation is not drop-in compatibility. It tells you where the manufacturer expects migrations to go — your engineering team still verifies electrical, mechanical, and firmware fit before anything ships.

§ From suggestion to shortlist

When the suggested replacement isn't enough, rank functional alternatives

Sometimes the notice names no successor. Sometimes the named successor fails a voltage rail, a footprint, or a temperature grade. PCNshark ranks functional candidates by specification similarity — a percentage plus the specs that differ — so engineering starts from the closest matches instead of a blank search. Similarity is a prioritization signal, not engineering qualification.

Manual alternate search
  1. Parametric search rebuilt from scratch
  2. Cross-reference PDFs downloaded
  3. Datasheets opened tab by tab
  4. Spec matrix assembled in a spreadsheet
  5. Distributor sites checked one by one
  6. Shortlist circulated by email
With PCNshark
  1. Start from the affected part's record
  2. Manufacturer-recommended replacement shown, if the notice names one
  3. Functional candidates ranked by spec similarity — e.g. 96%, 91%, 84%
  4. Differing specs flagged for engineering review
  5. Sourcing estimates and datasheets on each candidate
  6. Shortlist handed to engineering with the evidence attached

The ranking gets the closest candidates onto the table in minutes. It does not qualify anything — the percentages order the engineering work; they never replace it.

A manufacturer recommendation and a spec-ranked candidate are different signals

PCNshark shows both, kept distinct, so the team knows exactly what each one does — and does not — tell them.

Where it comes from
Manufacturer-recommended replacement

Named by the manufacturer in the PCN or EOL notice

Spec-ranked functional candidate

Found by comparing published specifications

What it tells you
Manufacturer-recommended replacement

Where the manufacturer expects migrations to go

Spec-ranked functional candidate

How close the published specs are, and which ones differ

How it is presented
Manufacturer-recommended replacement

As the notice's own suggestion, linked to its source

Spec-ranked functional candidate

Ranked by similarity percentage, differences flagged

What it guarantees
Manufacturer-recommended replacement

Nothing — it is not a drop-in claim

Spec-ranked functional candidate

Nothing — it is a prioritization signal

Who validates it
Manufacturer-recommended replacement

Your engineering team

Spec-ranked functional candidate

Your engineering team

Both signals appear on the same component record, next to the BOM exposure they would resolve — so the evaluation starts with everything the organization already knows.

Compare the context that matters

Lifecycle and manufacturer

Each candidate carries its lifecycle status and manufacturer, so a proposed replacement that is itself NRND gets caught before anyone spends qualification effort on it.

Package and key specs

Package and the key specifications behind the similarity ranking, with differences flagged — the exact places engineering review should start.

Datasheets

Find and attach datasheets from available sources, or upload your own — so the side-by-side review works from documents, not memory.

Inventory and MOQ

Stock and minimum order quantities across ~15 distributors — distributor data, refreshed on demand, so the team sees whether a candidate is actually buyable.

Price and estimated lead time

Price breaks, a market median at 1k, and estimated lead time per candidate. Estimates, not quotes — inputs for comparison, not commitments.

Authorized vs. independent

Which offers come from authorized distributors and which from independent sources — context that changes how much weight a stock number deserves.

§ Worked example

Example: an NRND microcontroller in 12 active BOMs

An illustrative alternate evaluation, from the part flagged by a notice to the starting point engineering sees. Illustrative data — not live inventory, and not a quote.

The part being replaced
Part
STM32F407VGT6
Lifecycle status
NRND
Used in
12 BOMs
Programs affected
4
PCNshark alternate evaluation
  1. Manufacturer-recommended replacement extracted from the notice
  2. Functional candidates ranked by spec similarity — 96%, 91%, 84%
  3. Sourcing estimates refreshed on demand across ~15 distributors
  4. Datasheets attached for side-by-side review
  5. Engineering review assigned on the impact
The starting point engineering sees
Mfr-recommended replacement
STM32H563ZIT6
Spec similarity
94%
Stock across distributors (est.)
18,420
MOQ
100
Median price @1k (est.)
$4.82
Estimated lead time
14 wk

Illustrative data. Similarity is a prioritization signal, not engineering qualification. Sourcing figures are distributor data refreshed on demand — estimates, not quotes or guaranteed availability.

PCNshark narrows the search. Engineering approves the part.

Spec similarity gets a credible shortlist onto the table faster. Everything that makes a replacement safe to ship stays with your engineering team.

Candidate discovery
PCNshark provides

Mfr-recommended replacement plus spec-ranked candidates

Engineering owns

Deciding which candidates deserve evaluation

Specification comparison
PCNshark provides

Published key specs with differences flagged

Engineering owns

Electrical and mechanical compatibility

Package and footprint
PCNshark provides

Package shown on each candidate

Engineering owns

Pinout, footprint, and land-pattern verification

Firmware and software
PCNshark provides

Datasheets attached for review

Engineering owns

Firmware, driver, and toolchain impact

Qualification
PCNshark provides

A place to record the plan, evidence, and outcome

Engineering owns

Qualification requirements and testing

Reliability and thermal
PCNshark provides

Notes and evidence kept on the record

Engineering owns

Derating, thermal, and reliability analysis

Customer and regulatory
PCNshark provides

The decision history showing what was reviewed

Engineering owns

Customer approvals and regulatory requirements

The final call
PCNshark provides

The recorded disposition — never an automatic approval

Engineering owns

The approval itself

PCNshark never marks an alternate as qualified or approved on its own. Manual reviewed decisions are never silently overwritten — a conflicting signal flags the record for review instead.

Record what was accepted — and rejected

Six months later, "why didn't we use the cheaper one?" deserves a better answer than an email search. A practical checklist for what the component's decision record, notes, and evidence should capture when an evaluation closes — copyable and printable.

Your selections stay in your browser — nothing is uploaded, and no email is required to copy, print, or download.

In PCNshark this lives on the organization-wide component record — notes, attached evidence, and a part-level decision history of who decided what, when, old value to new, and why.

PCNshark alternate evaluation is a strong fit when:

PCNshark is not:

PCNshark organizes the alternate evaluation around your notices, BOMs, and engineering judgment — it narrows the search and preserves the decision; it does not make the decision.

§ FAQ

Frequently asked questions

01Where do alternate recommendations come from?
Two sources, kept distinct. Manufacturer-recommended replacements are extracted from the PCN or EOL notice itself — the successor the manufacturer names. Functional candidates are found by comparing published specifications and ranked by similarity, with the differing specs flagged. Both appear on the affected part's component record.
02Does a high similarity percentage mean the part is a drop-in replacement?
No. Similarity is a prioritization signal, not engineering qualification. It orders the shortlist so engineering starts with the closest published specs — electrical and mechanical compatibility, pinout, firmware, qualification, reliability, and customer or regulatory requirements remain engineering-owned review work.
03Which plans include alternate recommendations?
Alternate recommendations are available on Team plans and above. Starter includes the PCN workflow, BOM matching, and component records without the alternate ranking.
04Is the sourcing data live inventory or pricing?
No. PCNshark shows distributor data across roughly 15 distributors — stock, MOQ, price breaks, a market median at 1k, and estimated lead time — refreshed on demand when you view it. The figures are estimates for comparison, not quotes, and never a guarantee of availability or lead time.
05Can we see whether an offer is from an authorized distributor?
Yes. Offers carry authorized-versus-independent context, so the team can weigh a stock figure accordingly before sourcing acts on it.
06How do datasheets get attached?
PCNshark finds and attaches datasheets from available sources, and you can upload your own — for the outgoing part and for candidates — so spec review works from the documents, not from memory.
07Can we record why an alternate was rejected?
Yes. The component record's notes, attached evidence, and part-level decision history can capture which candidates were evaluated, why one was preferred, why others were set aside, who reviewed it, and when — connected to the source notice and the affected BOMs and programs.
08Can PCNshark approve or qualify an alternate automatically?
No. PCNshark never marks an alternate as qualified or approved on its own, and manual reviewed decisions are never silently overwritten — if new information conflicts with a reviewed decision, the record is flagged for human review.
09What if the notice doesn't name a replacement?
Many notices don't. The spec-similarity ranking works either way — it starts from the affected part's specifications, so engineering gets a ranked shortlist even when the manufacturer suggests nothing.
10Can different programs make different calls on the same replacement?
Yes. Impact triage supports per-line decisions, so one program can accept an alternate while another runs additional qualification or a lifetime buy — each disposition stays connected to the same notice and part.
11Does PCNshark push the chosen alternate into our PLM or ERP?
No. There is no automatic sync. The handoff is manual: export a BOM-impact CSV and a PDF impact report, and the change owner carries the decision into the PLM or ERP process your company already runs.
12What happens after the 14-day trial?
Starter and Team include a 14-day trial and require a payment method. After the trial, the plan continues unless you cancel. Scale begins as a paid subscription rather than a trial.

Start the next replacement search from the notice, not a blank filter

See the successor the manufacturer named, rank the closest functional candidates, compare sourcing estimates and datasheets, and record what was accepted — and rejected — on the component record your whole organization shares. Alternate recommendations are available on Team plans and above.

Starter and Team include a 14-day trial. A payment method is required. Scale begins as a paid subscription.
§ Keep reading

Related resources

Workflow and capability descriptions are based on PCNshark's current production capabilities. Distributor figures shown in examples are illustrative. Qualification requirements and approval authority vary by company, product, quality system, and regulatory environment.