Replace silicon reverse-protection diodes (D7/D8) with Schottky

[NeoRecasata]

From your own rev 0.1 board test notes:

"Power rails after reverse protection diode I used a 1N4007 diode. V+ reads about 10V. V− reads about 11V. I might need to change the reverse protection diodes to Schottkys"

The 1N4001/4007 silicon diodes drop ~0.7V per rail. With nominal ±12V Eurorack input, the rails on the module land around ±11.3V.

Schottky alternatives:

Part	Forward V	Current	Notes
BAT85	0.32V @ 100 mA	up to 200 mA	Small, glass package
MBR0530	0.4V @ 100 mA	500 mA	SOD-123 SMD
SBE140-T	0.34V @ 1A	1A	Higher current capacity
1N5817	0.45V @ 1A	1A	TO-220-style, very robust

For Eurorack module power draws (typically 30–80 mA), BAT85 is plenty. MBR0530 is a good SMD choice.

Replacing 1N4001 → BAT85 recovers ~0.4V per rail. Op-amps still have plenty of headroom, but the change makes the +5V regulator on other modules less stressed if you ever cascade power.

Action

• Replace D7, D8 (1N4001) with BAT85 (or equivalent Schottky)
• Update BOM accordingly
• Re-measure rails after the swap — should read closer to ±11.7V