Datasheet for Chinese XJ0603HR red LEDs? - Page 1
Forum section: electronics / projects

author: hanakp
author_rank: Regular Contributor
timestamp: April 24, 2025, 02:19:56 pm
content: Short version:Is there datasheet for Chinese XJ0603HR red LEDs? They only pop up Alibaba and similar resellers. I can't even find manufacturer's name. I'm asking because I have other LED colors that may come from the same manufacturer. Some basic parameters for red ones are onthis Russian site.Long version:Three weeks ago, there was sale offull reels of 0603 LEDs on Aliexpress, red type cost only 2 USD. I actually bought all 11 colors they offer, because I use 0603 parts extensively. But the Aliexpress seller covered original reel stickers with their own stickers, to obfuscate actual manufacturer. Fortunately, it's still possible read original part numbers, either under strong light or by peeling the stickers off. Most colors came from Xin Dai company, althoughparameters on their site are pretty sparse, too. But like I said, red ones have XJ0603HR part number and I don't know where they came from. I made a photo of the original sticker, but it contains same information as the Russian site. Please let me know if you recognize the logo or Chinese characters on the photo.BTW, the brightness of the 11 colors differs very widely (at the same current). Both blues, both whites, emerald green and pink are nicely bright. Red, green, yellow and orange are much dimmer. And purple is very dim. Also, its manufacturer is unknown, because the Aliexpress seller completely removed original sticker.

author: daisizhou
author_rank: Super Contributor
timestamp: April 25, 2025, 12:42:45 am
content: This red LED is usually used to display or indicate,People are usually most concerned about the package, such as 0603, 0402......I also suggest you use "Taobao", "Aliexpress" is not the best choice.Ordinary Chinese people don't shop on "Aliexpress"

author: hanakp
author_rank: Regular Contributor
timestamp: May 06, 2025, 02:28:41 pm
content: Aliexpress has the advantage it's (usually) in English, whereas Taobao appears to be solely in Chinese.Anyway, here are parameters from the russian site, in case it becomes defunct:XJ0603HRVf=1.9-2.1 VIf=5 mAWavelength=620-625 nmLuminous intensity=100-110 mcd

author: daisizhou
author_rank: Super Contributor
timestamp: May 06, 2025, 11:53:59 pm
content: Quote from: hanakp on May 06, 2025, 02:28:41 pmYou can choose translation software or AI assistance.If you want the best value for money, choose Taobao

author: thm_w
author_rank: Super Contributor
timestamp: May 07, 2025, 12:10:43 am
content: I would send an email to xindai, their email is listed right on the site.But really, what do you need from the datasheet other than the important specs you already have? Its a generic LED so you do not want to drive it hard or get it hot.

author: hanakp
author_rank: Regular Contributor
timestamp: May 07, 2025, 06:32:37 am
content: Like I wrote in OP, XJ0603HR are not from Xin Dai. And I don't know the original producer. I'm hoping the unknown purple LED will be from the same one.

author: thm_w
author_rank: Super Contributor
timestamp: May 07, 2025, 09:52:37 pm
content: OK did not realize that, don't recognize the logo but maybe your phone can read the QR code?

author: hanakp
author_rank: Regular Contributor
timestamp: September 12, 2025, 09:05:48 am
content: I managed to separate the original sticker with hot air gun, I'm attaching its scan below. But I still couldn't identify the original manufacturer. I cut the logo to a separate image and fed it to Google and Baidu reverse image search, but nothing. AI didn't help, either. Chinese letters in the top right corner say "red color". The QR code contains string "0AE.B.01.001400299001170004400032A241202200004", which is probably just some internal production lot identifier.Please take another look at the logo, maybe it will be familiar to someone. Thanks.

author: amyk
author_rank: Super Contributor
timestamp: September 13, 2025, 05:54:31 am
content: I suspect there are hundreds if not thousands of companies in China making LEDs. This one's Chinese name is probably two characters whose romanisations are 'X' and 'J' respectively.

author: hanakp
author_rank: Regular Contributor
timestamp: September 13, 2025, 08:54:07 am
content: Now that's clever approach! Since I don't understand Chinese, I asked CharGPT about it 3 times, always with different angle and wording. It actually found 2 opto producers whose name contains X and J, but not this one. Still, it was a nice try.