1N4007(M7)SMA
NK Technologies
Needs validationlow risk
1N4007(M7)SMA is an alternate part number for the same general purpose diode from NK Technologies.
Best Alternatives to M7(SMA)
M7(SMA) is a widely used 1A, 1000V general-purpose rectifier in a compact SMA surface-mount package. It is a staple component for rectification in power supplies and freewheeling diode applications.
AI replacement insight
Electrical riskmedium
Mismatching diode type (e.g., fast vs. general purpose) can alter circuit behavior and increase power dissipation due to higher forward voltage.
Package risklow
The SMA (DO-214AC) package is highly standardized, so physical compatibility issues are unlikely.
Sourcing risklow
This is a very common diode type with many manufacturers, making sourcing generally easy.
Can it be replaced directly?
Yes, M7A and 1N4007(M7)SMA are considered direct, pin-compatible replacements for M7(SMA), offering the same form, fit, and function.
Best replacement path
The best replacement path is to use another 'M7' coded diode in an SMA package, such as M7A from FUXINSEMI, which is a widely available cross-vendor equivalent.
Main risk
The main risk when substituting is accidentally using a 'Fast' or 'Superfast' recovery diode (like RS1M or ES1M) which can have a higher forward voltage drop, leading to increased power loss and heat.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | M7(SMA) | 1N4007(M7)SMA | M7A | RS1M | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMA (DO-214AC) | SMA | SMA (DO-214AC) | SMA (DO-214AC) | SMA / SMA (DO-214AC) / DO-214AC (SMA) — Package is form and fit compatible.; M7A: Package is form and fit compatible.; RS1M: Package is form and fit compatible.; US2M: Package is form and fit compatible. |
| Manufacturer | NK Technologies | NK Technologies | - | - | NK Technologies — Same manufacturer as target. |
| Voltage | 1000V | 1000V | 1000V | 1000V | 1000V — Reverse voltage rating matches.; M7A: Reverse voltage rating matches.; RS1M: Reverse voltage rating matches.; US2M: Reverse voltage rating matches. |
| Current | 1.0A | 1.0A | 1.0A | 1.0A | 1.0A / 2.0A — Forward current rating matches.; M7A: Forward current rating matches.; RS1M: Forward current rating matches.; US2M: Higher forward current rating provides more margin. |
| Application | General Purpose | General Purpose | General Purpose | Fast Recovery | General Purpose / Fast Recovery / Ultra-Fast — Both are general purpose rectifiers.; M7A: Both are general purpose rectifiers.; RS1M: Candidate is a fast recovery diode (trr ~500ns), target is general purpose. Usually safe, but verify application.; US2M: Candidate is ultra-fast (trr ~75ns), target is general purpose. Verify application for ringing. |
| Forward Voltage | 1.1V @ 1A | - | 1.1V @ 1A | 1.3V @ 1A | 1.1V @ 1A / 1.3V @ 1A / ~1.7V @ 2A — Forward voltage drop is identical.; RS1M: Higher forward voltage will increase power dissipation.; US2M: Forward voltage is likely higher than target's 1.1V at 1A. Check datasheet. |
Application & sourcing insights
Questions & answers
The best alternative to M7(SMA) is M7A from a reputable manufacturer like FUXINSEMI. It is a widely sourced, pin-compatible part with identical electrical specifications.