What are the differences between LM331A and LM331?
Documented differences: 3PEAK enhanced variant (suffix A), marginally better key specs; verify against datasheet before swapping. Review each against your application before committing.
LM331 — graded alternatives
ti-onsemi-generic1 verified match, sorted by compatibility grade and evidence strength. Differences are listed before any compatibility claim. Data source: live tenant catalog. Data verified: 2026-07-13T00:00:00.000Z
The closest documented alternative to LM331 is 3PEAK LM331A, graded FUNC (functional alternative that may need board or BOM changes, high confidence). Key difference to review first: 3PEAK enhanced variant (suffix A), marginally better key specs; verify against datasheet before swapping. Every match is an engineering-review candidate, not an unqualified drop-in claim.
Grading methodology: how grades and evidence classes work.
Known differences: LM331A vs LM331
- 3PEAK enhanced variant (suffix A), marginally better key specs; verify against datasheet before swapping
Differences for the other candidates are listed per match below.
Need firm pricing, MOQ and lead time?
The RFQ adds a full parametric review and current commercial terms for the exact requested part and quantity.
Engineering questions about this cross-reference
Is LM331A a drop-in replacement for LM331?
LM331A is a FUNC-graded engineering-review candidate (functional alternative that may need board or BOM changes). At minimum, review: 3PEAK enhanced variant (suffix A), marginally better key specs; verify against datasheet before swapping. Production use requires validation on your board.
What is the difference between P2P, PIN and FUNC grades?
P2P is a documented drop-in candidate, PIN keeps the package and pinout but needs firmware work, and FUNC is functionally similar but may require a board or BOM change.