Actual value by tolerance
| Tolerance | Band | Minimum | Maximum |
|---|
| ±1% | Brown | 990 Ω | 1.01 kΩ |
| ±2% | Red | 980 Ω | 1.02 kΩ |
| ±5% | Gold | 950 Ω | 1.05 kΩ |
| ±10% | Silver | 900 Ω | 1.1 kΩ |
SMD and printed codes
| SMD, 3 digits | 102 |
|---|
| SMD, 4 digits | 1001 |
|---|
| SMD, EIA-96 | 01B |
|---|
| Letter code (IEC 60062) | 1K0 |
|---|
Current and power at common voltages
| Voltage | Current | Power | Resistor rating |
|---|
| 3.3 V | 3.3 mA | 10.9 mW | 1/8 W |
| 5 V | 5 mA | 25 mW | 1/8 W |
| 9 V | 9 mA | 81 mW | 1/4 W |
| 12 V | 12 mA | 144 mW | 1/2 W |
| 24 V | 24 mA | 576 mW | 2 W |
As an LED resistor
Current through one LED in series with 1 kΩ:
| Supply | Red LED (2.0 V) | White or blue LED (3.2 V) |
|---|
| 3.3 V | 1.3 mA | 0.1 mA |
| 5 V | 3 mA | 1.8 mA |
| 12 V | 10 mA | 8.8 mA |
LED Resistor Calculator →
Standard series
1 kΩ is a standard value in the E6, E12, E24, E48, E96 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 1 kΩ resistor?
On a 4-band resistor: brown, black, red, gold. On a 5-band resistor: brown, black, black, brown, brown.
What is the SMD code for 1 kΩ?
102 on 3-digit resistors and 1001 on 4-digit (1%) resistors.
How much current flows through a 1 kΩ resistor at 5 V?
5 mA, dissipating 25 mW. A 1/8 W resistor is enough.
Which resistors get mixed up with 1 kΩ?
brown, black, brown, gold is 100 Ω and brown, black, orange, gold is 10 kΩ: only the third band changes, so check it carefully.
