Repository for DCA75 measurements

counterdeliver

counterdeliver

New member
Apologies in advance if I missed an obvious post/discussion… given that the Peak Atlas DCA75 uses different test voltages from most/all datasheets, is there a collection anywhere of in-spec DCA75 measurements for various components (or categories, e.g., JFETs, etc.)?

I see scattered, individual references to this or that component, and I DO understand that interpolation can be achieved by plotting curves (if you have a PC and the time), but I was just wondering if there was a “quick and dirty” reference…
 
Check out Appendix C of the DCA75 user guide to get the measurement values used by the DCA75 - this can often help you connect or extrapolate/interpolate DCA values with spec sheets for various transistors, etc.

Note added: I can't append the user guide pdf here, seems that pdfs aren't accepted as attachable files - so check the Peak web page

And yes, if you use curve trace mode, then you can spec the values from the DCA75 at the current or voltage of your own choice
 
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counterdeliver said:
Thanks. I found the diode page earlier (super helpful) and it got me thinking about whether there was something similar for other common components.

I guess I need to bite the bullet and create a windows VM and start plotting some curves.
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I have wanted to do that for so long, but haven't taken the time, I want to get started soon but I think something was bothering me with the measured data back then, I need to get back to it...

jwin615 said:
Yeah, someone here has a big diode collection
@thomasbe86 was that you?
Click to expand...
yup yup, I need to give it a little update to make it visually more usesable btw, I will keep you guys posted when it's revamped!

darwin999 said:
Check out Appendix C of the DCA75 user guide to get the measurement values used by the DCA75 - this can often help you connect or extrapolate/interpolate DCA values with spec sheets for various transistors, etc.

Note added: I can't append the user guide pdf here, seems that pdfs aren't accepted as attachable files - so check the Peak web page

And yes, if you use curve trace mode, then you can spec the values from the DCA75 at the current or voltage of your own choice
Click to expand...
That is super helpful, I actually never looked this up, I was ready to accept the fact this was beyond me 😂
 
darwin999 said:
Here's a screenshot of the first page of Appendix C...
Click to expand...
I had the latest guide, put had not looked in the appendix either (thanks for that)! The DCA75 usually shows its test conditions along with the results (which is what made me do a 🙄 when it came to spec sheets), but it’s definitely nicer to have it all in one place. Too bad it’s not as simple as observing that the DCA75 tests at 5ma and the spec sheet says 10ma…and doubling the result 😅.
 
thomasbe86 said:
I have wanted to do that for so long, but haven't taken the time, I want to get started soon but I think something was bothering me with the measured data back then, I need to get back to it...
Click to expand...
First off, thanks for making that diode table. It’s already been a godsend! If you were to expand it to other components like you’ve been wanting to, you would totally win the internet! Haha.

I’d be happy to contribute DCA75 readings for any “known good” components I have, but wanting to know if my components were good is what brought me here in the first place…so there’s that…
 
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