LED
LED
3mm
Red/Yellow/Green: 330Ω @ 5V, 150Ω @ 3.3V
Blue/White: 270Ω @ 5V, 75Ω @ 3.3V
- Head Diameter: 3 mm
- Voltage Drop:
- Red/Yellow: 1.8V-2.3V
- Blue/Green/White: 2.8-3.6V
- Current: 20mA Max
| Color | Vf | Ω @ 5V @ 10mA | Ω @ 3.3V @ 10mA |
|---|---|---|---|
| Red | 1.81 | 319 (330) | 149 (150) |
| Yellow | 1.89 | 311 (330) | 141 (150) |
| Green | 1.91 | 309 (330) | 139 (150) |
| Blue | 2.53 | 247 (270) | 77 (82) |
| White | 2.57 | 243 (270) | 73 (75) |
LED resistor calculator. Formula for calculating resistance needed for current limiting:
\[ R = \frac{Vf}{A} \simeq \frac{2.0}{0.010\ (10 mA)} = 200 Ω \]

AliExpress listing - 100PCS/lot 3mm 5mm F3 F5 Round LED Ultra Bright White Green Yellow Blue White Red Light Emitting Diode For Diy Kit