1.8 MΩ resistor colour code
Four bands: Brown · Grey · Green · Gold. The first two give the digits, the third multiplies, the fourth states how far off the real part may be.
Nominal
1.8 MΩ
1,800,000 ohms
Real range at ±5%
1.71 MΩ – 1.89 MΩ
A gold band allows this much drift.
Series
E12
Held in almost every parts drawer.
Band by band
| Band | Colour | Meaning |
|---|---|---|
| 1 | Brown | 1st digit — 1 |
| 2 | Grey | 2nd digit — 8 |
| 3 | Green | Multiplier — ×100,000 |
| 4 | Gold | Tolerance — ±5% |
How much it can take
Current and dissipation across the resistor, and the package you need. The suggested rating keeps a factor of two in hand, which is what anyone building a board actually does.
| Across it | Current | Dissipated | Package to pick |
|---|---|---|---|
| 3.3 V | 1.83 µA | 6.05 µW | 1/8 W |
| 5 V | 2.78 µA | 13.9 µW | 1/8 W |
| 12 V | 6.67 µA | 80 µW | 1/8 W |
| 24 V | 13.3 µA | 320 µW | 1/8 W |
What you can actually get
Parts made
88
366th most of 1,465 values
In stock
19
across 1 of them
Cheapest at 100
$0.0022
each
Tolerances sold
±0.1% to ±5%
6 grades in all
Packages: 0805, 1206, 0603, 0402, 2512, 2010, 1210, 1218. Ratings: 50mW to 3W.
What ten of them actually cost
The price everyone quotes is the reel price. If you want ten, you cannot buy the reel — and the real figure is usually several times higher per piece.
Ten pieces
$0.19
$0.019 each · Cut Tape (CT) · minimum order 1
The reel price
$0.00185
each, but only from 100,000 pieces up
Sitting in stock
920,624
across 26 part numbers
Per piece, ten costs 10.3× the reel price. That gap is why a handful of resistors never costs what the headline price suggests.
Stocked in ±1% and ±5%, rated 1/20 W to 1/2 W.
Cheapest part you can buy ten of: RC0402JR-071M8L by YAGEO — see it at Digi-Key.
Assembly stock from the JLCPCB library, read 2026-09-24. Retail prices and stock from Digi-Key, read 2026-09-24. Prices move — check the product page before ordering. That is what a board house will place for you — not everything a distributor sells.
The same value, marked differently
Five bands
BrownGreyBlackYellowBrown
Three significant digits and a ±1% band.
Values that can overlap this one
At ±5% the tolerance bands of neighbouring values run into each other. A part sold as one of these could measure the same as a 1.8 MΩ — which is why measuring beats reading when it matters.
- 1.74 MΩ1.7226 MΩ–1.7574 MΩ
- 1.78 MΩ1.7622 MΩ–1.7978 MΩ
- 1.82 MΩ1.8018 MΩ–1.8382 MΩ
- 1.87 MΩ1.8513 MΩ–1.8887 MΩ
If you do not have one
Standard values that land within 1% of 1.8 MΩ when combined.