JLC Xilinx pricing - Page 1
Forum section: electronics / general

author: jayk
author_rank: Regular Contributor
timestamp: November 03, 2024, 06:57:49 pm
content: Been looking at some Xilinx part pricing on JLC (https://jlcpcb.com/parts). Some of the pricing is super-cheap for low-volume compared to the big distributors. Has anyone used JLC to build something with a 7-series/kintex us+/zynq? I'm seeing prices I'd only expect to get with some pretty high volumes, and maybe not even then (i.e. XC7Z020, XC7A75, XCKU5P).

author: langwadt
author_rank: Super Contributor
timestamp: November 03, 2024, 07:03:03 pm
content: just for fun we bought 10x XC7A100 because there were silly cheap, they all had the QR code lasered off. I'm guessing someone bought a lot of them cheap under the condition that they wouldn't be resold, so they wanted to hide where they came fromedit: it was actually LCSC but afaik they are connected

author: jayk
author_rank: Regular Contributor
timestamp: November 03, 2024, 07:23:09 pm
content: Did they work ok?

author: langwadt
author_rank: Super Contributor
timestamp: November 03, 2024, 07:38:20 pm
content: Quote from: jayk on November 03, 2024, 07:23:09 pmdon't know they are still in the box, we didn't use them

author: coromonadalix
author_rank: Super Contributor
timestamp: November 03, 2024, 08:24:57 pm
content: qr code lazered off ? i would not have bought them, unless you have military export constraints or else, i never saw any attempt to hide qr codesyou may have some dudswe use the 030 045 models, nothing was hidden, official stuff from a broker. Digikey Mouser and others got all fu#$%#$% since covidsome of their numbers are in the obsolescence ones, not eve sure they are genuine, could be ...

author: jayk
author_rank: Regular Contributor
timestamp: November 03, 2024, 08:37:06 pm
content: Did you purchase through JLC? Was it way cheaper that a normal distributor?

author: ataradov
author_rank: Super Contributor
timestamp: November 03, 2024, 09:02:04 pm
content: Hiding QR codes is very common. If you want to have parts for cheap, you need to tolerate unknown origin.JLC/LCSC is legit, they will not be distributing fakes, at least knowingly. But they do source parts as leftovers in some cases and that results in low available quantities and inconsistent supply. But if they have something you need at the price you like, get it. Just don't wait to finish the design, get the parts first, since they may be gone tomorrow and forever.

author: asmi
author_rank: Super Contributor
timestamp: November 04, 2024, 02:40:13 pm
content: I've used a few Xilinx devices bought on LCSC, they work just fine. I still wouldn't use them for commercial designs, but for dev boards and other R&D stuff which never leaves my lab I can tolerate some risk if it allows me to save so much money. I don't even want to know where JLCPCB gets them for so cheap, but I certainly appreciate them giving me a chance to get access to these parts at such great prices.

author: squadchannel
author_rank: Frequent Contributor
timestamp: November 04, 2024, 03:15:08 pm
content: As I wrote before, Xilinx (AMD) is the same, as long as you go to the manufacturer's website and you don't see it listed as an authorized distributor, it is a second source product.LCSC is definitely a second source distributor .LCSC simply buys surplus parts from the second source market and sells them.when the parts is out of stock, LCSC simply says “please quote” and the next time the parts come in, the price is unknown.Of course, are not a distributor that can provide a stable supply.The only manufacturers that have designated LCSC as their distributor are probably Chinese manufacturers.some of them work but are counterfeit.(atmega328p)The ones with the markings erased are the worst. But it's saying, "This is a legit product".It's a legit product, so they must have erased the markings with a laser. I don't know what the truth is.However, LCSC is a reliable distributor in the Chinese market.

author: ataradov
author_rank: Super Contributor
timestamp: November 04, 2024, 03:36:10 pm
content: I have not seen credible reports of fake and re-marked parts from LCSC.Lasering off FPGA QR code is a common practice for second hand market. FPGA vendors want a tight control on the distribution and sometimes for good reasons. But nobody is faking high end FPGAs.I would not rely on them for production because of unreliable supply.

author: SMTech
author_rank: Frequent Contributor
timestamp: November 04, 2024, 04:52:34 pm
content: Quote from: ataradov on November 04, 2024, 03:36:10 pmAmen to the supply issue, even when times are good Altera & Xilinx parts can disappear into 52 week leadtimes at the drop of a hat, during the post pandemic shortages we has a customer scuppered for 18months+ due to CyconeII FPGA shortages as well as, stupidly a $0.50 Altera CPLD, the Cyclone was unobtainable in any market, the CPLD we could get for $500 from Winsource, shockingly they weren't tempted. We used the same CPLD on another product, its function could be replicated with an HC244, presumably the engineer wanted to play with new toys that day.