2025年1月24日 · This article covers the issue of counterfeit boards – how to identify them and warning signs to look out for in stores. Let us first differentiate between compatible and counterfeit boards. Compatible: When a third-party product has copied the open-source hardware design and uses its own brand name. No problem!

2017年3月25日 · We needed a bunch of snap-fit ESD-safe closeable SMD component boxes at work, so I ordered 100 'Genuine' Wen-Tai boxes that look like this: I bought them on AliExpress, but can't find them on there anymore.

2024年12月3日 · Recently (April 2023 and november 2024) a driver update delivered through windows update is breaking some fake CH340G chips (this chip is used to emulate an USB serial port to communicate with the Arduino main MCU). In the context of SimHub use, a warning will appear in two cases when a CH340G chip is detected:

2020年11月13日 · The ATMega328PB measures are consistant between Farnells and Alis chips, but the other two models seem "in the cabbage" (as we say in French) with random values (still, it's in the range of Mohms). Are those necessarily fake? Another interesting finding is that all the models from Farnell share a similar resistance, between 9 and 15Mohm.

Reputable brokers do their best to only supply genuine, working parts, but sometimes fakes slip through the cracks and make their way onto an SMT line. Counterfeit components come in many forms, and it takes experience to spot counterfeit parts.

2021年11月15日 · All my legit MMBFJ201s have tested as N-Ch JFETs in a TC-1 tester. Some fake SMD JFETs have tested as either BJTs or MOSFETs. In my experience, if you put them in a JFET tester like the Greatly Improved JFET Matcher II, they will likely get hot and release the magic smoke. That's a pretty dead giveaway that they're not JFETs.

2019年11月7日 · I've reached the conclusion that all my TL072's and TL074's bought via AliExpress from China are fakes. Both SMD and THT versions. Most likely they are LM324 or similar.

2025年1月31日 · I tried a USBASP programmer and and an external programmer on the ICSP header next to the 16U2. They power the board but neither can even read the chip ID. Later tests showed several of the pins of that ICSP don't connect to the fake 16U2 at all. The main ICSP for the Mega328P works fine with both programmers.

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2018年12月6日 · I have this 486 motherboard (ALiKDN-1401/2C) that has fake cache on it. I find the board a bit of a novelty in itself but I was wondering if it would be possible to swap out the fake cache with real cache?