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LM321 — graded alternatives

TI

3 verified matches, 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 LM321 is SGMicro SGM8271, graded FUNC (functional alternative that may need board or BOM changes, high confidence). No differences are recorded in the cited evidence; review both datasheets for application conditions. 2 further graded candidates listed below. Every match is an engineering-review candidate, not an unqualified drop-in claim.

Grading methodology: how grades and evidence classes work.

3 GRADED MATCHESSORTED BY GRADE · EVIDENCE STRENGTH
FUNCCONF · HIGH
SGM8271★ BEST MATCH
SGMicro · SGMicro SGM8271 is recorded in the manufacturer's official cross-reference data. Detailed parameters require engineering verification.
Catalog evidence
Sourcing unconfirmed
RFQ
NOT IDENTICAL
Differences not itemized yet — verify against both datasheets before committing a design.
EVIDENCE
E3 · checked 2026-07-13T00:00:00.000Z
FUNCCONF · HIGH
SGM8273-1
SGMicro · SGMicro SGM8273-1 is recorded in the manufacturer's official cross-reference data. Detailed parameters require engineering verification.
Catalog evidence
Sourcing unconfirmed
RFQ
NOT IDENTICAL
Differences not itemized yet — verify against both datasheets before committing a design.
EVIDENCE
E3 · checked 2026-07-13T00:00:00.000Z
FUNCCONF · HIGH
3PEAK · 3PEAK LM321A Amplifiers And Special Function Circuits component with source-traceable manufacturer data.
Catalog evidence
Sourcing unconfirmed
Detail
NOT IDENTICAL
  • 3PEAK enhanced variant (suffix A), marginally better key specs; verify against datasheet before swapping
EVIDENCE
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Engineering questions about this cross-reference

What are the differences between SGM8271 and LM321?

No differences are recorded in the cited evidence for this pair. That is not a guarantee of identity — review both datasheets for electrical, timing and application conditions.

Is SGM8271 a drop-in replacement for LM321?

SGM8271 is a FUNC-graded engineering-review candidate (functional alternative that may need board or BOM changes). Cited evidence must be reviewed against your application conditions. 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.