Shortage sourcing
Screen available candidates when the approved MPN is constrained or lead time is unstable.
Replacement search hub
Cross-reference Center
Search a part number, manufacturer, package, or partial MPN to find mapped replacement paths and alternative candidates. Each result is a starting point for sourcing review, not an automatic approval.
Search results
Candidate matches for onsemi
EOL replacement
Start a controlled review for obsolete, LTB, NRND, or lifecycle-risk parts.
Cost-down alternate
Compare broader candidates when procurement needs lower cost without skipping validation.
Pin-to-pin candidate
Identify mapped candidates that still require footprint, pinout, and datasheet checks.
Functional equivalent
Shortlist parts with similar function when the approved path allows engineering review.
Relationship types
What each alternative label means
Pin-to-pin candidate
A mapped candidate where pin compatibility may be relevant, but footprint, pinout, and package drawings still need verification.
Functional equivalent
A part that may serve a similar function after electrical limits, timing, tolerance, and application behavior are checked.
Same series
A nearby part within the same or related family that may differ by rating, tolerance, package, or lifecycle state.
Similar part
A broader sourcing candidate that can help shortage or cost-down research but requires deeper technical review.
Cross-reference search is an early screening step. Before release, verify package, pinout, electrical parameters, datasheet revision, quality requirements, and internal approval rules.
Alternative part lookup
Electronic component replacement, equivalent, and cross-reference search
Use this component replacement finder when a buyer needs to search electronic part equivalents, alternative MPNs, package-compatible candidates, or supplier-supported cross-reference paths. It is built for B2B electronics sourcing teams that need a practical starting point before RFQ, shortage sourcing, EOL replacement review, or cost-down alternate research.
The Cross-reference Center connects catalog search, mapped alternative data, manufacturer paths, and RFQ support in one page. It can help shortlist possible replacements and functional equivalents, but it does not label every match as a direct replacement or guaranteed drop-in substitute.
Before approving any equivalent electronic component, compare manufacturer datasheets, package drawings, pinout, lifecycle, electrical limits, qualification requirements, and your own application conditions.
MPN replacement searchEquivalent part lookupAlternative component sourcingCross-reference RFQ support
Cross-reference FAQ
Electronic component replacement search FAQ
Short answers for buyers and engineers using cross-reference search, equivalent part lookup, and alternative component sourcing.
What is an electronic component cross-reference search?
It is a search workflow for finding catalog matches, replacement candidates, equivalent parts, or alternative components for a source MPN. The result should be treated as a shortlist for RFQ and engineering validation, not as automatic approval.
Can this tool find direct replacements or pin-to-pin alternatives?
It can surface mapped pin-to-pin candidates when data is available, but TrustCompo does not treat a search result as a guaranteed direct replacement. Buyers should verify footprint, pinout, package drawings, datasheets, and application limits.
What should I search for in the Cross-reference Center?
Search the exact manufacturer part number first. You can also use a brand name, package code, partial MPN, series keyword, or common sourcing phrase such as EOL replacement or cost-down alternate.
What happens if no alternative part is listed?
Submit the no-result RFQ form with the original part number, manufacturer, target quantity, and any approval constraints. The sourcing team can review availability, obsolete paths, and credible alternative candidates.
Does an equivalent part mean the same as a replacement part?
Not always. An equivalent part may share a function or key rating, while a replacement part may need closer package, pinout, lifecycle, and electrical compatibility. Both require validation before production release.
Can TrustCompo help with EOL or shortage replacement sourcing?
Yes. The Cross-reference Center is designed to support shortage sourcing, EOL replacement review, cost-down alternate research, and RFQ handoff for hard-to-find electronic components.