SMD Resistor Code Calculator and Reference Guide
Complete Guide to SMD Resistor Codes
Common SMD Resistor Values and Codes
- 1 ohm smd resistor code: 1R0, 100
- 10 ohm smd resistor code: 100, 10R
- 100 ohm smd resistor code: 101
- 1k resistor smd code: 102
- 10k resistor smd code: 103
- 100k smd resistor code: 104
Common SMD Code Examples
- smd resistor code 472 = 4.7kΩ
- smd resistor code 102 = 1kΩ
- smd resistor code 100 = 10Ω
Size Codes
Common SMD sizes and their dimensions:
- 0201: 0.6mm × 0.3mm
- 0402: 1.0mm × 0.5mm
- 0603: 1.6mm × 0.8mm
- 0805: 2.0mm × 1.25mm
- 1206: 3.2mm × 1.6mm
- 2010: 5.0mm × 2.5mm
Power Ratings
Typical power ratings by size:
- 0201: 1/20W (0.05W)
- 0402: 1/16W (0.063W)
- 0603: 1/10W (0.1W)
- 0805: 1/8W (0.125W)
- 1206: 1/4W (0.25W)
- 2010: 3/4W (0.75W)
Quick Reference
3-Digit Code
Value = (First two digits) × 10^(Last digit)
- 103 = 10kΩ
- 472 = 4.7kΩ
- 220 = 22Ω
4-Digit Code
Value = (First three digits) × 10^(Last digit)
- 1002 = 10kΩ
- 4701 = 4.7kΩ
- 2200 = 220Ω
R Notation
- 4R7 = 4.7Ω
- R47 = 0.47Ω
- 0R1 = 0.1Ω