Actual value by tolerance
| Tolerance | Band | Minimum | Maximum |
|---|
| ±1% | Brown | 673.2 Ω | 686.8 Ω |
| ±2% | Red | 666.4 Ω | 693.6 Ω |
| ±5% | Gold | 646 Ω | 714 Ω |
| ±10% | Silver | 612 Ω | 748 Ω |
SMD and printed codes
| SMD, 3 digits | 681 |
|---|
| SMD, 4 digits | 6800 |
|---|
| SMD, EIA-96 | not used for this value |
|---|
| Letter code (IEC 60062) | 680R |
|---|
Current and power at common voltages
| Voltage | Current | Power | Resistor rating |
|---|
| 3.3 V | 4.85 mA | 16 mW | 1/8 W |
| 5 V | 7.35 mA | 36.8 mW | 1/8 W |
| 9 V | 13.2 mA | 119 mW | 1/4 W |
| 12 V | 17.6 mA | 212 mW | 1/2 W |
| 24 V | 35.3 mA | 847 mW | 2 W |
As an LED resistor
Current through one LED in series with 680 Ω:
| Supply | Red LED (2.0 V) | White or blue LED (3.2 V) |
|---|
| 3.3 V | 1.91 mA | 0.147 mA |
| 5 V | 4.41 mA | 2.65 mA |
| 12 V | 14.7 mA | 12.9 mA |
LED Resistor Calculator →
Standard series
680 Ω is a standard value in the E6, 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 680 Ω resistor?
On a 4-band resistor: blue, grey, brown, gold. On a 5-band resistor: blue, grey, black, black, brown.
What is the SMD code for 680 Ω?
681 on 3-digit resistors and 6800 on 4-digit (1%) resistors.
How much current flows through a 680 Ω resistor at 5 V?
7.35 mA, dissipating 36.8 mW. A 1/8 W resistor is enough.
Which resistors get mixed up with 680 Ω?
blue, grey, black, gold is 68 Ω and blue, grey, red, gold is 6.8 kΩ: only the third band changes, so check it carefully.
