S3M
Diotec Semiconductor
Needs validationhigh risk
S3M is a functional alternative with a higher current rating (2A) but a different, larger package (SMA).
Best Alternatives to M7F
M7F is a popular 1000V, 1A standard rectifier diode in a compact SMAF surface-mount package, commonly used for general-purpose rectification in power supplies and adapters. Finding a replacement requires careful consideration of package compatibility.
AI replacement insight
Package riskhigh
All candidates have different footprints (SMA, SMC, SOD-123FL) than the target's SMAF package, requiring a board redesign.
Electrical risklow
Candidates match or exceed the target's 1000V/1A rating and are the same standard diode type.
Can it be replaced directly?
No, there are no direct pin-compatible replacements for M7F among the candidates reviewed. All suitable alternatives are in different packages.
Best replacement path
Evaluate functional alternates like US1M or S3M if the SMA package is acceptable. All require board redesign and verification of thermal performance.
Main risk
The primary risk is package incompatibility. The target M7F is in an SMAF package, while all functional alternatives are in different packages (SMA, SMC, SOD-123FL), requiring a PCB layout change.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | M7F | S3M | S5MC | S6MC | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMAF | DO-214AC/SMA | DO-214AB, SMC | DO-214AB (SMC) | DO-214AC/SMA / DO-214AB, SMC / DO-214AB (SMC) / SOD-123FL — Candidate package is larger; requires PCB layout change.; S5MC: Candidate package is significantly larger; requires PCB layout change.; S6MC: Candidate package is significantly larger; requires PCB layout change.; SM4007PL-TP: Candidate package is smaller; requires PCB layout change. |
| Voltage | 1000.0V | 1000.0V | 1000.0V | 1000.0V | 1000.0V — matched; S5MC: matched; S6MC: matched; SM4007PL-TP: matched |
| Current | 1.0A | 2.0A | 5.0A | 6.0A | 2.0A / 5.0A / 6.0A / 1.0A — Higher current rating provides more design margin.; S5MC: Higher current rating provides more design margin.; S6MC: Higher current rating provides more design margin.; SM4007PL-TP: matched |
| Polarity Or Type | Standard | Standard | Standard | Standard | Standard — matched; S5MC: matched; S6MC: matched; SM4007PL-TP: matched |
Application & sourcing insights
Questions & answers
No direct, pin-compatible replacement was found. The best alternative depends on your board space. US1M and S3M are electrically similar in a slightly larger SMA package. All options require a PCB layout change.