COB LED
COBs are as the name suggests chips die bonded directly to a circuit board usually made from Aluminium containing multiple chips in close proximity. Normally these will be produced specifically to customer requirments. They will also require a custom moulded lens to focus the light that is emitted from each chip. The beauty of COB modules is that they provide very uniform high output can be obtained within and relatively small area. Again COB modules require very specific drive electronics and cooling to maintain reliability and output

1mil (1/1000 of an inch) = 25.4 microns

Frequency availability (contact us for chip size availability):

Dominant Wavelength Range Within Colour Groups (Unit : nm)

Colour / Code

A

B

C

D

E

UV 1)

255 – 300

300 - 360

365 - 370

370 - 375

375 - 380

Violet 1)

400 - 410

410 - 415

-

-

-

Blue

455 - 460

460 - 465

465 - 470

470 - 475

475 - 480

Cyan

495 - 500

500 - 505

505 - 510

-

-

Green

515 - 520

520 - 525

525 - 530

530 - 535

-

Yellow Green

565 - 575

-

-

-

-

Yellow

583 - 588

588 - 592

592 - 596

596 - 600

-

Orange

600 - 605

605 - 610

610 - 615

-

-

Red

615 - 620

620 - 630

630 - 635

-

-

High Red

635 - 645

-

-

-

-

IR 1)

720 - 740

760 - 780

840 - 860

875 - 885

935 - 940

Color / Code

a

b1

b2

b3

b4

c

x

y

x

y

x

y

x

y

x

y

x

y

White 2)

0.280

0.248

0.292

0.287

0.299

0.273

0.312

0.315

0.317

0.297

0.330

0.315

0.264

0.267

0.283

0.305

0.292

0.287

0.306

0.335

0.312

0.315

0.330

0.363

0.283

0.305

0.306

0.335

0.312

0.315

0.330

0.363

0.330

0.339

0.361

0.385

0.299

0.273

0.312

0.315

0.317

0.297

0.330

0.339

0.330

0.315

0.356

0.351

1) Peak Wavelength
2) x,y coordinates for white led