How White LEDs are made

One of Seoul Semiconductor's strengths is its ability to control phosphor coating.

As an example for the P4 Series  they can produce up to 38 different white colors. See the Color Temperature section.

LED Flux Rank

Colour

Reference

Flux available (lm)

Pure
white

W42180W47180

T1: 70 ~ 80 (1)

T2: 80 ~ 91U1:   91 ~ 100

U2: 100 ~ 118

Natural white

S42180

S1, 54~60 S2, 60~70

Warm white

N42180

S2, 60~70 T1: 70 ~ 80

T2: 80 ~ 91 (2)

First selection criteria is the Flux in Lumen (lm), see the LED Basic section to review Flux definition.

As an example we take the P4 Series to illustrate Seoul Semiconductor Flux ranking terminology.

For each LED product family please refer to the Binning & Labelling document available within each LED product page. Or see the Seoul Web site in order to get the latest version.Flux rank available are different for each LED family.As you can notice for the P4 series, higher flux is for Pure White.

(1) Yield is more moving from T1 to T2

(2) Supported for small volume for low CRI

Related links

Other selection criterias are listed below:

Binning & Labelling