Actual value by tolerance
| Tolerance | Band | Minimum | Maximum |
|---|
| ±1% | Brown | 50.49 kΩ | 51.51 kΩ |
| ±2% | Red | 49.98 kΩ | 52.02 kΩ |
| ±5% | Gold | 48.45 kΩ | 53.55 kΩ |
| ±10% | Silver | 45.9 kΩ | 56.1 kΩ |
SMD and printed codes
| SMD, 3 digits | 513 |
|---|
| SMD, 4 digits | 5102 |
|---|
| SMD, EIA-96 | not used for this value |
|---|
| Letter code (IEC 60062) | 51K |
|---|
Current and power at common voltages
| Voltage | Current | Power | Resistor rating |
|---|
| 3.3 V | 64.7 µA | 214 µW | 1/8 W |
| 5 V | 98 µA | 490 µW | 1/8 W |
| 9 V | 176 µA | 1.59 mW | 1/8 W |
| 12 V | 235 µA | 2.82 mW | 1/8 W |
| 24 V | 471 µA | 11.3 mW | 1/8 W |
As an LED resistor
Current through one LED in series with 51 kΩ:
| Supply | Red LED (2.0 V) | White or blue LED (3.2 V) |
|---|
| 3.3 V | 0.0255 mA | 0.00196 mA |
| 5 V | 0.0588 mA | 0.0353 mA |
| 12 V | 0.196 mA | 0.173 mA |
LED Resistor Calculator →
Standard series
51 kΩ is a standard value in the E24 series. Check the tolerance and power rating of the actual component.
Nearby values
Same first two colors, different multiplier:
Frequently asked questions
What are the colors of a 51 kΩ resistor?
On a 4-band resistor: green, brown, orange, gold. On a 5-band resistor: green, brown, black, red, brown.
What is the SMD code for 51 kΩ?
513 on 3-digit resistors and 5102 on 4-digit (1%) resistors.
How much current flows through a 51 kΩ resistor at 5 V?
98 µA, dissipating 490 µW. A 1/8 W resistor is enough.
Which resistors get mixed up with 51 kΩ?
green, brown, red, gold is 5.1 kΩ and green, brown, yellow, gold is 510 kΩ: only the third band changes, so check it carefully.
