Find Green 0603 LED Stock


For a 5 V low-side drive through the same 2N7002K MOSFET arrangement, the series-resistor values per color at 20 mA (and their nearest E24 values) are:

Table


LED ColorVf_typ (V)If (mA)R = (5 V – Vf_typ) / IfNearest E24 Value
Blue / Green3.520(5 – 3.5)/0.02 = 75 Ω75 Ω
Orange2.020(5 – 2.0)/0.02 = 150 Ω150 Ω
If you prefer lower currents (10 mA), simply double each:

Table


LED ColorIf (mA)R = (5 – Vf_typ)/0.01Nearest E24
Blue / Green10150 Ω150 Ω
Orange10300 Ω300 Ω
Recommended parts in 0603 to search/add:
Hook-up reminder:
  • LED anode → 5 V → RLED → LED1 → MOSFET D
  • MOSFET S → GND
  • ESP32 GPIO → 100 Ω → MOSFET G
  • MOSFET G → 100 kΩ → GND
Let me know which resistor values you’d like to place (and the target designator), and I can add them for you.
20mA resistor placement
10mA resistor placement
Add gate resistors
Use resistor array
5mA current values

AVTheremin_v02 BRANCH 1