Hi all, im looking at one of the sparkfun eagle schematics. and im trying to find the exact componnent. For example PROD_ID: TRANS-14386. Basically im trying to find the equivilant on LCSC. Im pretty new to electronics and trying to replicate a circcuit and want to make sure I choose as similar of a component as possible. Manual searching I can get close but im afraid I might miss a detail. For these components there are so many specifications.
Your question is not at all clear. What schematic? Which component? Why substitute?
It looks like the project you’ve chosen is a bit too advanced for your current level of understanding. To have a decent understanding of component selection and to be successful in analog circuit design generally requires at least a couple of years of advanced study, combined with actual practice.
Those are Sparkfun internal part numbers. Maybe a Sparkfun employee can assist?
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@jremington.You are not wrong..— vague questions often come from inexperience. There’s no real substitute for study and hands-on time.
I come from a CS background and spend most of my time coding, so diving into hardware has definitely been an uphill climb. Sometimes I wish I had gone back for an EE degree, but that’s not realistic when I just want to build and iterate on quick prototypes.
That’s actually what I appreciate about SparkFun’s open-source/open-hardware philosophy — it lowers the barrier to entry. You don’t need decades of expertise to start building real things. Right now, I’m working through countless YouTube circuit design tutorials, but many of them gloss over fundamentals. So you’re right — my foundational knowledge still needs work.
That said, I’ve found it’s entirely possible to build working modules from open hardware schematics, as long as you copy them carefully and adapt them thoughtfully to your own needs. And now, with agentic AI tools, it’s possible to validate designs and catch obvious mistakes — I’ve had some success doing exactly that.
But having the correct BOM is critical. Without it, it’s too easy to substitute the wrong component and introduce subtle issues. That’s really the core of my question.
Hi @Anupam_Das ,
Apologies for the slow reply…
TRANS-14386 is “Transistor Array - 2 PNP - BCM857BS-7-F”
At LCSC, it is “C105896”
Best wishes,
Paul
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Thanks @PaulZC . How did you arrive at that part. Is there an spreadsheet that maps the sparkfun products?
It’s an internal part number, that’s how Sparkfun tracks parts in their warehouse. I doubt very much there’s a spreadsheet available to the public but there would be a cross reference within Sparkfun’s inventory management system.
They aren’t hiding anything, it’s just how they track parts within their system.
Unfortunately not, it’s from our internal lists for specific components
There’s usually enough info to get close but you’d need to ask for individual part #'s :-/
Ok Thanks. Im just looking at the Beta Eagle files for the XRP adapt it a little to my own needs. This part was associated with the Perfect Diode Circuit section. This might be a gap of knowlege in eagle (I use EasyADA) but does Sparkfun have an Eagle bom generator like the kicad one? GitHub - sparkfun/SparkFun_KiCad_BOM_Generator: SparkFun BOM generator for KiCad v7/8/9.
Yes, there is a SparkFun-BOM_Generator ULP for Eagle: link.
Please note that we are no longer maintaining the SparkFun_Eagle_Settings and SparkFun-Eagle-Libraries repos. We switched to KiCad a while ago.
The part number you were looking for should have been included in the Eagle part details. It not being there is just a simple mistake. We are indeed not hiding anything. But we won’t be going back to correct that either… Tempus fugit… 
All the best,
Paul