Contact Sales & After-Sales Service

Contact & Quotation

  • Inquire: Call 0086-755-23203480, or reach out via the form below/your sales contact to discuss our design, manufacturing, and assembly capabilities.
  • Quote: Email your PCB files to Sales@pcbsync.com (Preferred for large files) or submit online. We will contact you promptly. Please ensure your email is correct.
Drag & Drop Files, Choose Files to Upload You can upload up to 3 files.

Notes:
For PCB fabrication, we require PCB design file in Gerber RS-274X format (most preferred), *.PCB/DDB (Protel, inform your program version) format or *.BRD (Eagle) format. For PCB assembly, we require PCB design file in above mentioned format, drilling file and BOM. Click to download BOM template To avoid file missing, please include all files into one folder and compress it into .zip or .rar format.

Package · Chip-on-Board

COB LED PCBs —
one bright, uniform source.

Chip-on-board light-engine boards with a short thermal path and reflective surface, on high-conductivity aluminum or ceramic to keep dense diode arrays cool.

Request a quote Discuss your design
Aluminum / ceramicWhite reflective maskPrecise bond padsHeavy copper to 4 oz
COB aluminum / ceramicPCBSync
COB LED PCB — light engine
up to 230W/m·K (AlN)
WhiteReflective mask
1–4 ozCopper
Board+Or assembled
100%Electrically tested
What it is

COB PCBs for high-density light engines

Chip-on-board (COB) packs many bare LED dies directly onto the board under a single phosphor layer, creating one bright, uniform source with no visible individual diodes. That density concentrates heat, so the substrate and pad design carry the whole thermal load.

COB boards run on high thermal-conductivity aluminum MCPCB for general lighting and on a ceramic LED PCB for the highest-output engines. Precise pad geometry, a white reflective surface and a short thermal path keep a COB cool, efficient and long-lived — the thinking behind every high-power board we build.

Single sourceOne uniform light engine
Concentrated heatSubstrate carries the load
Reflective surfaceWhite mask boosts output
Precise padsAccurate thermal & bond pads
Why PCBSync

Cool, uniform, reliable light engines

Short thermal path

High-TC dielectric and ceramic options.

Reflective surface

White mask and finishes that boost output.

Precise pads

Accurate thermal and bond pad geometry.

Heavy copper

Up to 4 oz for current spreading.

Material flexibility

Aluminum, copper-core or ceramic to match output.

Full assembly

Optional COB assembly and sourcing.

Applications

Where COB LED PCBs are used

Downlights & spotsCompact, tight beam control
Track lightingRetail & gallery accents
High-bayWarehouse & industrial
Stadium & floodVery high lumen output
Studio & filmUniform, high-CRI sources
Grow & horticultureCOB full-spectrum fixtures
Specifications

COB LED PCB capabilities

BaseAl / ceramic / CuHigh-TC dielectric / AlN
Thermal1–230 W/m·KMCPCB to AlN
Pad designPreciseThermal + wire-bond pads
MaskWhiteHigh reflectance
FinishENIG / AgReflective, bondable
BuildBoard or assembledBare or full COB
COB vs SMD

Why COB needs a better board

SMD designs spread heat across many separated packages, so each diode has room to cool. COB concentrates all of that heat into one small area, so the board must do far more thermal work. A high thermal-conductivity dielectric — or ceramic for the brightest engines — keeps a COB efficient and durable.

  • Concentrated heat — all in one small area.
  • High-TC dielectric — low junction-to-case path.
  • Ceramic option — AlN for brightest engines.
  • White mask — recovers usable light.
  • Precise pads — accurate thermal & bond geometry.
Concentrated heat pathJunction heat conducted down to the heatsinkLED diePhosphor / lensSolderDielectricAluminum / ceramicHeatsinkCOB thermal path
Start your project

Talk to a COB LED PCB engineer

Send your COB part and fixture spec and we'll reply with feasibility, a recommended base and a quote — usually within 24 hours.

  • COB & power — part number, watts, lumens.
  • Base & finish — aluminum or ceramic, mask.
  • Quantity — prototype, pilot or production.

LED PCB inquiry

Reply within 24 hours · DFM included · NDA on request
or
Upload your Gerber files →
Submitting opens your email app with the details prefilled. Files are attached on the upload page.
Explore

Related LED PCB capabilities

Ceramic LED PCBHeat for bright enginesAluminum PCBGeneral COB lightingHigh Power LED PCBHigh-output thermal designGrow Light PCBCOB full-spectrumLED PCB AssemblyTurnkey COB assemblyLED PCB OverviewAll LED board types
Answers

COB LED PCB — FAQ

A chip-on-board PCB has multiple bare LED dies mounted directly on the board under one phosphor layer, forming a single uniform light source. Because the heat is concentrated, the board's substrate and pad design carry the full thermal load.

Aluminum with a high thermal-conductivity dielectric handles most general-lighting COB engines. For the highest-output engines, a ceramic base such as AlN removes far more heat and protects efficiency and lifespan.

SMD spreads heat across many separated packages, while COB concentrates it into a small area — demanding a much shorter thermal path, so COB boards use high-TC dielectrics or ceramic substrates.

Yes — high-reflectivity white mask and tuned finishes to recover usable light and improve efficacy.

Yes — turnkey from bare board through COB assembly, sourcing and testing. See LED PCB assembly.

Let's build your COB LED PCB.

From downlights to stadium floods — partner with a manufacturer that keeps your light engine cool.

Request a quote Talk to an engineer

Contact Sales & After-Sales Service

Contact & Quotation

  • Inquire: Call 0086-755-23203480, or reach out via the form below/your sales contact to discuss our design, manufacturing, and assembly capabilities.

  • Quote: Email your PCB files to Sales@pcbsync.com (Preferred for large files) or submit online. We will contact you promptly. Please ensure your email is correct.

Drag & Drop Files, Choose Files to Upload You can upload up to 3 files.

Notes:
For PCB fabrication, we require PCB design file in Gerber RS-274X format (most preferred), *.PCB/DDB (Protel, inform your program version) format or *.BRD (Eagle) format. For PCB assembly, we require PCB design file in above mentioned format, drilling file and BOM. Click to download BOM template To avoid file missing, please include all files into one folder and compress it into .zip or .rar format.