Actual value by tolerance
| Tolerance | Band | Minimum | Maximum |
|---|
| ±1% | Brown | 386.1 Ω | 393.9 Ω |
| ±2% | Red | 382.2 Ω | 397.8 Ω |
| ±5% | Gold | 370.5 Ω | 409.5 Ω |
| ±10% | Silver | 351 Ω | 429 Ω |
SMD and printed codes
| SMD, 3 digits | 391 |
|---|
| SMD, 4 digits | 3900 |
|---|
| SMD, EIA-96 | not used for this value |
|---|
| Letter code (IEC 60062) | 390R |
|---|
Current and power at common voltages
| Voltage | Current | Power | Resistor rating |
|---|
| 3.3 V | 8.46 mA | 27.9 mW | 1/8 W |
| 5 V | 12.8 mA | 64.1 mW | 1/4 W |
| 9 V | 23.1 mA | 208 mW | 1/2 W |
| 12 V | 30.8 mA | 369 mW | 1 W |
| 24 V | 61.5 mA | 1.48 W | 3 W |
As an LED resistor
Current through one LED in series with 390 Ω:
| Supply | Red LED (2.0 V) | White or blue LED (3.2 V) |
|---|
| 3.3 V | 3.33 mA | 0.256 mA |
| 5 V | 7.69 mA | 4.62 mA |
| 12 V | 25.6 mA | 22.6 mA |
LED Resistor Calculator →
Standard series
390 Ω is a standard value in the E12, E24 series, so it comes in almost every resistor kit.
Nearby values
Same first two colors, different multiplier:
Frequently asked questions
What are the colors of a 390 Ω resistor?
On a 4-band resistor: orange, white, brown, gold. On a 5-band resistor: orange, white, black, black, brown.
What is the SMD code for 390 Ω?
391 on 3-digit resistors and 3900 on 4-digit (1%) resistors.
How much current flows through a 390 Ω resistor at 5 V?
12.8 mA, dissipating 64.1 mW. A 1/4 W resistor is enough.
Which resistors get mixed up with 390 Ω?
orange, white, black, gold is 39 Ω and orange, white, red, gold is 3.9 kΩ: only the third band changes, so check it carefully.
