Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => AmpTools/Tech Tips => Topic started by: EL34 on May 17, 2025, 09:51:08 am

Title: EIA codes
Post by: EL34 on May 17, 2025, 09:51:08 am

I found this handy EIA code chart
Companies are Alphabetical at the top and numerical at the bottom

For example 606-250 power transformer = Woodward-Schumacher Electric  Corp. Chicago 22, IL

https://el34world.com/charts/Misc/1.7.4_EIAcodes1961.pdf

 (https://el34world.com/charts/Misc/1.7.4_EIAcodes1961.pdf)Here's Jaycobie's chart
https://el34world.com/charts/Misc/EIACodeCompilation.pdf (https://el34world.com/charts/Misc/EIACodeCompilation.pdf)

Title: Re: EIA codes
Post by: acheld on May 17, 2025, 11:00:01 am

Also, Jaycobie has done awesome work compiling this online spreadsheet   

https://docs.google.com/spreadsheets/d/1P1jeVIQ9UdwlhXTDLQEDxYuShjFQZO_4tUchw5_8N9o/edit?usp=sharing (https://docs.google.com/spreadsheets/d/1P1jeVIQ9UdwlhXTDLQEDxYuShjFQZO_4tUchw5_8N9o/edit?usp=sharing)

The link is old, but remains active.

Title: Re: EIA codes
Post by: EL34 on May 17, 2025, 11:47:05 am

Thanks
I added his chart to the library