SMD LED lamps

[Amp David]

Can anyone explain the differences between a 5050 SMD LED and a 1028 SMD LED?

Which is the better between the 2 if any.

 

[topquark]

As I understand it it's the physical size of each of the LEDs, a 5050 will be 5.0mm x 5.0mm whereas the 1028, will be 1.0mm x 2.8mm.

 

[justartifacts]

Thanks for information topquark, Most of the LED lamps use the SMD technological innovation which is quite inexpensive, operates at a affordable present and warm but are still restricted with regards to lighting.

 

[Richard Burns]

Topquark is correct on the sizing; the manufacturers state that the 5050 are better (I think the other size is something like 3028 if I remember right).
I did once calculate the area and found that the area was slightly larger for 2 small ones compared to one large. However things have moved on and you now get the LED floodlights that seem to be one large SMD (presumably actually an array of small ones multiply filtered).

As far as I can tell there is not that much difference between the two but certainly the 5050 are touted as the brightest and best, I assume there is a more concentrated area of light to work with.

I like the unfocused SMD ones as they have the wide angle light and most customers want to light room with GU10 for which they are not designed, the SMD work better in this respect, though the specific area illuminance is lower the overlap helps here.
The focused SMDs at 60 degrees are quite good but you cannot really beat the large focused LEDs for accent lighting, pretty much halogen standard now.

 

[underdog]

The 10w led flood lights acutlly have 9x1w smd's! Not sure about the higher watt LEDs though!
Brightness of the led will depend on how it's driven as much as the size/charactists of the led.

5050 chips comprise of 3 smd's and are about o.8w each, usually installed in numbers to get a result.
The 1028 is quite a new product to hit the market from what I can gather. There close to the type used in gu10s as each chip is something like 2.8w.

Alot of torches us bl-1028 chips and a single chip produces high lumen out pu

 

[vernam616]

Robus & Halers LED fittings use small SMD LEDs, as i found out the other day when the frosted lens fell out when changing the outer ring