5 color smd led footprint - Page 1
Forum section: electronics / projects

author: saike
author_rank: Regular Contributor
timestamp: November 10, 2018, 06:04:50 pm
content: Can anyone point me to a data sheet or footprint drawing of a 5 color, 5mm x 5mm, rgb + ww/cw led that I guess is a 10 pin LCC package. I have no information about the manufacturer, they are just generic far east parts.Google brings up about a hundred million hits for rgbw led strip, not what I am looking for

author: t1d
author_rank: Super Contributor
timestamp: November 10, 2018, 07:17:48 pm
content: It would be helpful, if you would post a picture.Here is a method, that might work... Go to Ebay.com. Do a search and find the generic part, by the picture. When you have it, look at the item description. Ebay sellers often use the OEM part number, in the title, even though their product is generic.Having the part number, go to Mouser.com and look up the part. Download the data sheet.If that doesn't work, try Clive, at BigClive.com. He knows a lot about LEDs.I hope that helps.

author: Zero999
author_rank: Super Contributor
timestamp: November 10, 2018, 07:22:56 pm
content: I didn't know there was such a thing. I've not seen any more than four colours in an LED package: red, green, blue and white. The colour temperature of the white can be altered by activating some of the other colour LEDs.

author: saike
author_rank: Regular Contributor
timestamp: November 10, 2018, 08:12:52 pm
content: Found a picture of themI want to get a pcb for these designed and made by Monday mid morning. I haven't got the leds with me but I have had the size of them confirmed so I should be able to scale the picture to find the pin spacing.

author: Zero999
author_rank: Super Contributor
timestamp: November 10, 2018, 09:29:38 pm
content: Quote from: saike on November 10, 2018, 08:12:52 pmIt's interesting that they're six resistors. I wonder why?Sorry I can't help. You'll just have to measure one with calipers. If you have a high resolution scanner you could also give that a go by scanning something of a known size, such as a rule, placed next to the LED.

author: saike
author_rank: Regular Contributor
timestamp: November 10, 2018, 10:33:54 pm
content: I never noticed there are six resistors in the picture, very odd. The piece of kit I saw last week is 12Volt, with 3 leds in series with 5 resistors, 1 for each color.

author: SiliconWizard
author_rank: Super Contributor
timestamp: November 10, 2018, 11:08:19 pm
content: Looks like the same kind of LED as this:https://www.alibaba.com/product-detail/DC24V-China-Manufacturer-Double-copper-FPCB_60759750311.htmlProbably an Epistar 5050 WRGBW something. (Warm white/RGB/Cold white)Can't find any datasheet even on Epistar's website (https://www.epistar.com/EpistarEn/index), but I can't seem to find any RGB LED there.I'd venture that the pins are 1 mm apart, as on those 5050 chips the pins are usually spread over a 4 mm width, but of course this is just guessing.

author: jfuller000
author_rank: Contributor
timestamp: November 11, 2018, 07:57:54 am
content: This might be similar:https://www.aliexpress.com/item/100-100Pcs-5050-RGB-CCT-LED-Chip-5050-RGBWW-led-5050-Sanan-SMD-Beads-White-Warm/32863169857.htmlI've just bought some.I'm interested to see if they have the same issue I've seen with RGBW SK6812s where the light from the blue LED leaks over and activates the white phosphors (which meant the blue wasn't as saturated as I'd have liked).

author: saike
author_rank: Regular Contributor
timestamp: November 11, 2018, 09:45:59 am
content: Thanks for the diagram, that is perfect.I have just done a job using hundreds of rgbw leds so they can be mixed to more or less whatever color is needed. I told the designers to avoid using blue if at all possible, so they chose ... blue

author: bson
author_rank: Unknown
timestamp: November 13, 2018, 05:25:40 am
content: You can also measure it with calipers, add 0.5mm to the pad dimensions, create a footprint, print it at 100% and place the component on the printout to verify you didn't do something silly. I've done this more than once for random unknown parts...

author: saike
author_rank: Regular Contributor
timestamp: November 13, 2018, 07:32:26 am
content: Done, this will be filmed and in a dumpster within a few weeks. No worries about how long it has to last

author: Zero999
author_rank: Super Contributor
timestamp: November 13, 2018, 12:02:00 pm
content: Quote from: saike on November 13, 2018, 07:32:26 amSo it's a single use device? Interesting. Please post the video, when it's done.

author: saike
author_rank: Regular Contributor
timestamp: November 13, 2018, 12:31:39 pm
content: It is a big film production. If anything leaks out of the department before release date, people will get bits of their anatomy removed with a blunt knife.