Database/Tool for Identifying Old Electronic Component Markings

The user's question about the triangle symbol on an old film capacitor and its identification by commenters as the Mitsubishi Electric brand logo highlights a common need among electronics hobbyists, repairers, and engineers working with vintage equipment: the ability to identify manufacturers and component details from often obscure or unfamiliar markings.

An information resource like a 'Vintage Electronic Component Logo & Marking Database' would be incredibly useful. This could be a searchable online platform where users can look up logos by visual description (e.g., "triangle symbol," "stylized letter"), manufacturer name, or even upload images for community identification or AI-assisted matching. It would list manufacturers associated with specific logos and potentially link to data or series information.

A more advanced solution could be an AI-powered app for component photo identification. Users could take a picture of a component and its markings, and the app would use image recognition and a trained model to identify the manufacturer and potentially the component type or series.

Expected Benefit: Both resources would greatly assist in the repair, restoration, and understanding of older electronic devices. They would provide a quick and reliable way to identify manufacturers from obscure markings, helping to determine component specifications, find replacements, and reduce guesswork, saving users considerable research time and effort.

Origin Reddit Post

r/askelectronics

What does this triangle symbol represent on this old film capacitor?

Posted by u/StaticEater106/02/2025

Top Comments

u/brettjugnug
Triforce!
u/Primary_Employ_1798
Mitsubishi Electric
u/utlayolisdi
Manufacturer logo
u/InsertBluescreenHere
I think thats just a brand logo
u/Chlorinedreams
https://preview.redd.it/8u138a1awh4f1.jpeg?width=1691&format=pjpg&auto=webp&s=90af75933e92ba21e74baeecb261c20a28ef0284
u/Ysgarder_syndrome
I love it and I don't even know where it's from unless it's just from you then I wiv You PANASONIC DIVISIOIN
u/EstimateOk7050
Really I learned something new today. Thank you
u/GambAntonio
As others said, it's the Matsu-Shit-a logo
u/InsertBluescreenHere
I think thats just a brand logo
u/Sandor64
Mitsubishi means diamond edit: got downvote??? so if somebody try help got downvote... never will understand
u/Icy_Jackfruit9240
And Matsushita is below a pine tree (matsu->pine, shita->below). It's a relatively common surname in some areas historically. Hishi really means rhombus and the reason it's sometimes
u/StaticEater1
Lol
u/glader65
AbsoluteSolver
u/StaticEater1
Cool. I didn’t know this was a wiki
u/meshtron
Nukeyeller
u/karnathe
I would like to inform you that this comment really made me smile
u/Sandor64
Thank you for clarification!
u/UniqueUserName259
1 wigglevolt = 1 V•V•A, or 1 V^2•A. It represents a… (checks front cover of ugly’s) …hmm
u/One-Comfortable-3963
Yes me too! Can't wait to share this with some Mitsubishi owners.
u/Sad_Week8157
The manufacturer
u/Nickko_G
The manufacturer's logo
u/1Davide
> got downvote? Because it's not Mitsubishi. It's Matsushita. Different company.
u/audiodude5171
MATSUSHITAAAAAAA AAAAWAUAUWAFKFSHGLFKJFGLHGKJ i wuv you panasonic division
u/fzabkar
https://mirrorservice.org/sites/www.bitsavers.org/components/panasonic/_dataBooks/1974_Matsushita_Electronics_Semiconductors-Cathode_Ray_Tubes-Electron_Tubes.pdf (see the logos on page 15) h
u/CharlesHaynes
Close. Hishi which means literally "water chestnut" is the word for "diamond shaped." Hishi becomes bishi when used in the middle of a word. Mitsu is "three." So Mitsubishi is "three diamond
u/Resident_Ad3147
This is the logo for the manufacturer, Panasonic/Matsushita
u/th3r3s-n0-us3r5-l3f7
You can tell its for A.C because its rated for 400 wiggleVolts

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