
MDD
US2M is a higher-voltage SMA rectifier but is slower than ES2D.
ES2D is a 200V 2A fast rectifier in SMA. Alternatives need package, polarity, recovery, and thermal checks.
Trr, Vf, and leakage vary.
ES2J package evidence conflicts.
No firmware interface.
Maker/package must be exact.
Direct replacement for ES2D should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Check ES2J first only if the exact SMA package is confirmed; otherwise review US2M or Schottky options by circuit role.
Package/pinout and diode-type differences are not fully verified.

MDD
US2M is a higher-voltage SMA rectifier but is slower than ES2D.
| Feature / factor | ES2D | US2M | SS2200 | SS3200 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DO-214AC SMA | DO-214AC SMA | - | - | DO-214AC SMA — same package string |
| Pinout | 2-pin diode | 2 pins | - | - | 2 pins — polarity not checked |
| Voltage | 200V | 1000V | - | - | 200V — same VR |
| Current | 2A | 2A | - | - | 2A — same IF(AV) |
| Application | 35ns fast rectifier | 75ns, 1.7V Vf | - | - | Schottky — leakage may rise |
Verified drop-in options for ES2D are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.