measuring diode size-scc

[Presentteck]

Quick question, I cant seem to find it anywhere...

Where do you measure the diodes? From the can diameter or the slightly larger base.
Thanks for the help

 

[Blord]

The measurement is at the base. We used mostly 5.6mm diode but 3.8mm and 9mm is also common.

 

[Presentteck]

Thank you soo much. You see, when I measured the can it was about 3.8mm in diameter. And the back was around 5.6mm. Yeah...

Thanks a ton!

 

[Meatball]

Ah yes, I can see how that might be confusing. I think they have more formal names for the packages as laser diodes are not the only things built into these types of packages.

What are they?

TO-6?
TO-18?

 

[Things]

TO-3 is the only diode package used for other devices, the 9mm and 5.6mm ones don't really have specific package names.

 

[Presentteck]

is it a TO type? or just a no name?

 

[Blord]

I have a found a link to laser diodes packages, Power Technology, Inc.: Laser Diode Package Types

TO is just a type.

 

[TheReddish]

The TO stands for "transistor outline" from JEDEC technical drawings.

 

[AUS]

I think the 5.6mm diodes are a TO-18 package, and the 9mm ones are TO-39 or TO-5.