LM321MFX
National Semiconductor
Needs validationmedium risk
LM321MFX is the closest catalog match but still needs pinout review.
Best Alternatives to LM321MF
LM321MF is a single SOT-23-5L op amp. The closest catalog candidate is LM321MFX, but pinout review is still required.
AI replacement insight
Electrical riskmedium
Current, offset, GBW, and slew may differ.
Package riskmedium
SOT-23-5L matches, pinout not proven.
Firmware risklow
Analog op amp; no firmware interface.
Sourcing riskmedium
Use lifecycle and stock checks.
Can it be replaced directly?
No pin-compatible replacement is confirmed from the provided fields.
Best replacement path
Start with LM321MFX, then verify pinout, GBW, slew rate, bias current, and offset.
Main risk
Missing pinout evidence and electrical deltas.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | LM321MF | LM321MFX | OPA333AIDBVR-HXY | HOPA330AIDBVR | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-5L | SOT-23-5L | SOT-23-5L | SOT-23-5L | SOT-23-5L — same package; OPA333AIDBVR-HXY: same package; HOPA330AIDBVR: same package |
| Pinout | 5 pins | 5 pins | 5 pins | 5 pins | 5 pins — pin functions missing; OPA333AIDBVR-HXY: pin functions missing; HOPA330AIDBVR: pin functions missing |
| Voltage | 3-32V | 3-36V | 1.8-5.5V | 1.8-5.5V | 3-36V / 1.8-5.5V — range covers target; OPA333AIDBVR-HXY: low-voltage only; HOPA330AIDBVR: low-voltage only |
| Current | 430uA | 0.7mA typ | 26uA | 26uA | 0.7mA typ / 26uA — higher supply current; OPA333AIDBVR-HXY: lower quiescent current; HOPA330AIDBVR: lower quiescent current |
| Temperature | -40 to 85C | -40 to 125C | -40 to 125C | -40 to 125C | -40 to 125C — wider temp; OPA333AIDBVR-HXY: wider temp; HOPA330AIDBVR: wider temp |
Application & sourcing insights
Questions & answers
LM321MFX is the closest provided candidate, but it still needs pinout and parameter review.