SM4007PL
MDD(Microdiode Semiconductor)
Needs validationlow risk
A pin-compatible upgrade with a much higher voltage rating (1000V vs 50V).
Best Alternatives to 1N4001W
Find and compare replacements for the 1N4001W, a 1A 50V general-purpose rectifier in a SOD-123FL package. This guide reviews pin-compatible upgrades and functional alternatives.
AI replacement insight
Package risklow
SOD-123FL is a common package with many available alternatives.
Electrical riskmedium
Using a 'Fast Recovery' type instead of 'Standard' can increase power loss and cause EMI. This requires review.
Can it be replaced directly?
Yes, SOD4007 is a direct replacement for 1N4001W, offering a higher voltage margin.
Best replacement path
SOD4007 from MDD is a strong upgrade path, matching form, fit, and function with a superior voltage rating.
Main risk
The main risk is substituting with a different diode type, such as a 'Fast Recovery' diode, which can have a higher forward voltage and different switching characteristics.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | 1N4001W | SM4007PL | SOD4007 | FR107 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOD-123FL | SOD-123FL | - | - | SOD-123FL — Package matches, ensuring form and fit. |
| Voltage | 50V | 1000V | - | - | 1000V — Voltage rating is a significant and safe upgrade. |
| Current | 1.0A | 1.0A | - | - | 1.0A — Forward current rating matches. |
| Forward Voltage | 1.1V | 1.1V | - | - | 1.3V — Higher Vf increases power dissipation. |
| Diode Type | Standard | - | Standard | - | Fast Recovery — Faster recovery may cause EMI; target is standard recovery. |
Application & sourcing insights
Questions & answers
SOD4007 and SM4007PL are excellent alternatives, offering the same package and ratings but with a much higher 1000V breakdown voltage, making them a robust upgrade.