Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives RF Cascade Workbook 2018 RF Symbols for Visio - Word Advertising Magazine Sponsor RF Cafe RF Electronics Symbols for Visio RF Electronics Symbols for Office Word RF Electronics Stencils for Visio Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Anritsu Alliance Test Equipment Amplifier Solutions Anatech Electronics Axiom Test Equipment Berkeley Nucleonics Bittele Centric RF Conduct RF Copper Mountain Technologies Empower RF everything RF Exodus Advanced Communications Innovative Power Products ISOTEC KR Filters Lotus Systems PCB Directory Rigol RF Superstore San Francisco Circuits Reactel RFCT TotalTemp Technologies Triad RF Systems Windfreak Technologies Withwave LadyBug Technologies Wireless Telecom Group Sponsorship Rates RF Cafe Software Resources Vintage Magazines Thank you for visiting RF Cafe!
RF Cascade Workbook 2018 - RF Cafe

Inductor Color Codes

Two methods of inductor markings are predominant - EIA (Electronic Industries Association) and Mil-Spec (Military Specification). Both use the standard color-number association familiar with color-coded resistors. The chart and examples below show that a Mil-Spec inductor can be identified by the presence of a double-width silver band at the left edge. Unless specified otherwise by the manufacturer, units are in microhenrys (µH). Mil-Spec inductors - and possibly some EIA types - use a silver or gold band in the multiplier to denote 0.1 and 0.01, respectively.

Inductor Color Codes

(4-Band EIA and 5-Band Mil-Spec Inductors)

Color Mil-Spec

Identifier

Double-Width

Silver Band

1st

Significant

Digit

2nd

Significant

Digit

Multiplier Tolerance
Silver Mil-Spec     0.01 ±10%
Gold       0.1 ±5%
Black   0 0 1  
Brown   1 1 10 ±1%
Red   2 2 100 ±2%
Orange   3 3 1000 (=1k) ±3%
Yellow   4 4 10k ±4%
Green   5 5 100k  
Blue   6 6 1000k  
Violet   7 7    
Gray   8 8    
White   9 9    
4-Band EIA Example 5-Band Mil-Spec Example
5 - 6 - 1 - Gold

56 * 101 µH, ±5%

56 * 10 µH, ±5%

560 µH, ±5%

Inductor 4-Band EIA Color Code - RF Cafe 

Silver - 6 - 2 - Gold - Red

Mil-Spec 62 * 0.01 µH, ±2%

Mil-Spec 0.62 µH, ±2%

Mil-Spec 620 nH, ±2%

Inductor 5-Band Mil-Spec Color Code - RF Cafe

Related Pages on RF Cafe

- Inductors & Inductance Calculations

- Inductance Conversions

- Standard Inductor Values

- Inductor Vendors

 

 

Posted  February 9, 2015

Innovative Power Products Couplers
Rigol DSG5000 Microwave Generator - RF Cafe
Exodus Advanced Communications Best in Class RF Amplifier SSPAs
RF Superstore (RF Components) - RF Cafe
Axiom Test Equipment - RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

These Are Available for Free

 

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:

AirplanesAndRockets.com