Fake chip, what can i expect ? - Page 1
Forum section: electronics / beginners

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: December 21, 2023, 01:23:28 pm
content: Hello,This is a chip from aliexpress, a TRIPATH TA2024, and the chip is marked TRIPATR instead of TRIPATH.Coud you say what kind of performance that i can expect ?

author: Andy Chee
author_rank: Super Contributor
timestamp: December 21, 2023, 01:55:17 pm
content: There are different types of fake chips.The damaging fake chips are the ones that are a completely different device altogether. For example, if your TA2024 was really a Zilog Z80A or Atmel 89C51 underneath, the chip would undoubtedly fail to function as intended and likely blow up (and maybe blow up your board) due to incorrect connections!

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: December 21, 2023, 02:01:24 pm
content: I've recently measured some Texas instrument TPA3116 from aliexpress and they are unable to provide more than 50% of the amperage of the datasheet.I also have many hypex modules and they meet the manufacturer specification hands down

author: Bud
author_rank: Super Contributor
timestamp: December 21, 2023, 02:35:26 pm
content: So if you know the answer then why you asked?

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: December 21, 2023, 03:25:59 pm
content: The deep analysis of the expertise about these bad fake chips.

author: wraper
author_rank: Unknown
timestamp: December 21, 2023, 03:31:32 pm
content: It easily could be original chip salvaged from e-waste and relabeled to look like new. Could be a relabeled clone or it could be something else entirely. Only testing will tell.

author: Andy Chee
author_rank: Super Contributor
timestamp: December 21, 2023, 03:46:55 pm
content: There are several YouTube videos documenting fake chips:Adrian gets fake ram chips with apparent relabeled speed grades.And a fake MOS 6532 is decapped and die examined under microscope, with Atmel markings!And CuriousMarc examines another Chinese silicon die, which seems genuine under the microscope, even though the outer package was remarked.In summary, there are several methods of faking chips, each with different consequences to the performance of your intended application.

author: magic
author_rank: Super Contributor
timestamp: December 21, 2023, 04:45:15 pm
content: Chinese roulette. You never know what's inside until you pull the trigger

author: u666sa
author_rank: Frequent Contributor
timestamp: December 21, 2023, 06:15:04 pm
content: Quote from: Coordonnée_chromatique on December 21, 2023, 01:23:28 pmI've recently orderedthis one... It's fake winbond 64 megabit flash. It works in DIR-300 and DIR-320 routers. Thought slow-ish. In some devices it will not work. Chip itself is Spansion, not winbond. First feedback on product with 4 stars is mine.

author: u666sa
author_rank: Frequent Contributor
timestamp: December 21, 2023, 06:18:32 pm
content: Quote from: magic on December 21, 2023, 04:45:15 pmBut it's cheap and most of the time it works!

author: Coordonnée_chromatique
author_rank: Frequent Contributor
timestamp: December 21, 2023, 07:19:13 pm
content: Quote from: u666sa on December 21, 2023, 06:18:32 pmMost of the time it works yes, but the performance seems to be inadequate most of the time today imo.