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Chip-on-Board metal core PCB

Chip-on-Board metal core PCB

    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Terms of Trade: FOB,CFR,CIF,EXW,FCA,CPT,CIP
    Min. Order: 1 Piece/Pieces
    Packaging: Vaccum Package
    Productivity: 10000
    Brand: JHY PCB
    Transportation: Ocean,Air
    Place of Origin: China
    Certificate: ISO9001

Product Description

Chip-on-Board Metal Core PCB

Chip-on-Board Metal Core PCB (COB MCPCB) is a type of semiconductor assembly technology. Unlike the traditional assembly process, COB MCPCB has a micro-chip (which is also referred to as die). The micro-chip touches the metal core, which dissipates heat.

This forms an electrical interconnection between the chip and the trace on the board. Since, there is direct contact between the die and the board, there is no need for a dielectric layer. Thus, the thermal conductivity of the Chip-on-Board Metal Core PCB is the same as that of metal core material.

Chip On Board (COB) Packaging Technology

JHY PCB is a well-known manufacturer of Chip-on-Board Metal Core PCB, as well as rigid PCB, flexible PCB, rigid flex PCB, LED PCB, aluminum PCB.

Structure of COB MCPCB

Structure of Single layer metal core PCB

What is COB?

COB, Chip On Board is a very popular and widely used LED package technology. Multiple bare diodes directly contact with MCPCB (Metal Core Printed Circuit Board) substrate to produce diode arrays on the same wafer or chip. When it lights up, it looks like a lighting panel.

With different diode arrays, COB chip can be designed to be different shapes, the common shapes are round, square, rectangle, circle ring. Meanwhile some innovative manufacturers had developed dual or triple CCT and RGB COB chips.

Currently there are two main COB technology, which are traditional COB chip and new flip COB chip.

What is the difference between traditional COB chip and flip COB chip?

The above picture show the schematic diagrams of a traditional wire-bond COB chip and no wire-bond flip COB chip.

A traditional COB chip is bonded on the Metal Core PCB substrate by bonding epoxy and connects to the circuit electrodes via two bonding wires. The thermal energy generated by the LED chip is dissipated through the diode's sapphire substrate, bonding epoxy, followed by a Metal Core PCB dielectric layer before reaching the metal core.

On the other hand, the flip COB chip has the LED diode directly bonded on the circuit electrodes without the bonding wire and epoxy. The heat generated by the LED is dissipated through circuit electrodes, MCPCB dielectric layer, and then diffused into the metal core.

In comparison, The advantages of flip COB chips are:

1. The traditional COB chip gets narrow illuminating light with 20% light is covered by bonding wires, while the light of flip COB chip gets no influence with no bonding wires.

2. Light decay is a natural characteristic for LED, the output lumen decreases when the LED junction temperature increases. Flip COB chip can minimize the light decay, because it gets better thermal management with efficient heat dissipation path.

3. Flip COB chip exhibits less heat resistance due to efficient heat disspation path, it can work under high current. So with high wattage, it can improve luminous efficacy (LM/W).

4. Traditional COB chip connects to the circuit electrodes via two bonding wires, these boding wires is possible to be broken during packaging or using. Flip COB chip don't need these bonding wires, removing a potential risk and reducing the defective rate.

The types of COB PCB

Currently there are there main types of COB PCB, which are Metal Core PCB (MCPCB), Mirro Aluminium PCB and Ceramic PCB.

1. MCPCB (Aluminium / Cooper + Silver Plating Process) gets low thermal conductivity at 1 - 3W/m.k with large heat resistance and reflectivity at 95%, thus it is suitable for small and middle power COB chip (Power < 10W).

2. Mirro Alumnium (Mirro Aluminium + Silver Placting Process) PCB gets high thermal conductivity at 170W/m.k with low heat resistance and reflectivity at 98%, thus it is suitable for large power COB chip (Power 10 - 50W).

3. Ceramic PCB gets good thermal conductivity > 24W/m.k, good reflecttivity > 95% and good dielectric strength > 15KV/mm. It is the trend to use ceramic PCB for COB module in future.

Comparison with SMD and high power chip

  • COB chip can produce a large mount of lumen with just little energy, so it is more energy saving than SMD & high power chip.
  • Due to the small size of diode and higher density of packaged diodes, COB chip can produce the light with higher intensity, then the luminous efficay (LM/W) is higher than SMD & high power chip.
  • For COB chip, the light is illuminated from a face rather other a point (the light produced by SMD and high power chip is from a point) in order to make light greater uniformity, so glare will not be possibly formed.
  • The diodes on COB chip directly contact MCPCB, and MCPCB can be regarded as its heat sink. However for SMD and high power chip, the heat dissipates from a point rather tha a face like COB chip. Therefore COB chip gets better thermal management than SMD and high power chip.
  • The better heat resistance and better thermal management can minimize the light decay and extend the life-span of LED. So COB chip gets longer life-span than that of SMD & high power chip.
  • COB can also be used as a small device like a flash of the smart phone and camera. This small COB chip can use little energy to produce a large amount of light.
Advantages of Using JHY PCB's COB Metal Core PCBs

There are numerous advantages of using COB metal core PCBs, some of which are as given below
  • One of the biggest advantages of utilizing a COB metal core PCB is that it helps you improve your time to market capability.
  • These metal core PCBs have an excellent heat dissipation capability.
  • They have a very good thermal conductivity of 137W/m.K.
  • These PCBs have a better heat dispatch property, and require a lesser number of solder joints as compared to the other types. This increases the reliability of these PCBs.
  • High power LEDs can be easily assembled on the Chip-on-Board metal core PCBs.
  • The use of COB metal core PCBs improve the lifespan, as well as the reliability of the LEDs.
  • The material and production process used for these PCBs are of high quality. This is responsible for making the assembly easier, and decreases the error percentage in the assembly process by a considerable amount.
  • These PCBs consume less space, and thus lesser costs.
  • The metal core PCBs have an enhanced security protection, and are very hard to hack using reverse engineering technique.
Applications of Chip-on-Board Metal Core PCBs

The several advantages of Chip-on-Board Metal Core PCBs make them popular among a number of different applications. Some of the major applications, which use these PCBs are:
  • Electronics Lighting
  • High Power LED (up to 200W)
  • Power Supply
  • LED Backlight for LED TV
  • Automotive
  • LED Front Light for E-Book
  • Street & Parking Lot Lighting
  • Agriculture & Horticulture Lighting
  • Other products that require thermal solutions
COB metal core PCB manufacturing process

COB process consists of three main categories to perform when manufacturing the Chip-on-Board:

1st: 'die mount or die attach';
2nd: 'wire bonding';
3rd: 'the encapsulation of die wires'.

By using wire bonding & epoxy packaging then directly embedded on MCPCB, this practice can extend the lifespan of LED and unified light emission.

Chip-on-Board metal core PCB manufacturer

JHY PCB has a strong backing of more than 9 years of experience in manufacturing flexible PCB and rigid flex PCB. With a team of trained and knowledgeable professionals, we provide sturdy PCBs that can withstand extreme conditions. We are known to provide the fastest turnaround times. To know more about the Chip-on-Board metal core PCB, and other types of metal core PCBs available with us, please contact us at the earliest.

Metal Core PCB manufacturing

Metal Core PCB manufacturingMetal Core PCB fabrication

Metal Core PCB manufacturing Capabilities

Below are the capabilities of the Single Layer metal core PCB at PCBJHY.COM

Technical Specification




Aluminum core

FR4 prepreg

Iron Alloy

Board Thickness
Copper thickness
0.5 OZ, 1.0 OZ, 2.0 OZ, 3.0 OZ, up to 10 OZ
Routing, punching, V-Cut
Thermal Conductivity (dielectrial layer)
0.8, 1.0, 1.5, 2.0, 3.0 W/m.K.


HAL lead-free
chemical gold
immersion tin

Initial copper

35µm (for 1.5mm)
140µm (for 2.0mm)
Immersion Gold
Immersion Silver
Surface Finish
Immersion Gold
Inspection Methods
100% Visual Inspection
Cross Sectioning
Sample Lot Inspection
Electrical Testing

Min. conductor width-150µm
Maximum Number of Layers: 1- 20
Minimum Line Spacing and Line Width: 3 MIL
Vacuum/Plastic bag
Samples L/T
4~6 Days
5~7 Days

Why choose us?

  • Save money&time! Achieve peace of mind!
  • A professional and trustworthy Double Sided More Core PCB manufacturer.
  • Fastest PCB Prototype.
  • One stop solution for various PCB & SMT Stencil.
  • Low cost for simple PCB.
  • Affordable price for high-tech PCB.
  • Minimum orders 1pcs.
  • 24-hour online customer service.
  • Professional PCB engineer for one-to-one service.
  • Shipment on time.
  • Guarantee good service and quality from PCB quotation to delivery.

Certification(UL:E466618, TS16949, ISO9001.RoHS)

Quality is one of the cornerstones in Global Success' business. We work actively with continuously improvements to secure a high quality level on our products as well as our services. To satisfy our customers we focus on producing PCB with stable top quality. We have implemented the UL:E466618, TS16949, ISO9001.RoHS quality system. The perfect quality assurance system and with various inspection equipment`s help us to monitor the whole production process, assure stability of this process and high product quality, meanwhile, advanced instruments and technology methods have been introduced to attain sustained improvement.

UL Certification
TS16949 Certification
SGS Certification

JingHongYi PCB (HK) Co., Limited


Jinghongyi PCB (HK) Co., Limited is a professional manufacturer of high-quality PCB. JHY PCB specializes in quick turn PCB prototypes, small-medium volume PCB. Established in 2011, located in Baoan District, Shenzhen, China, with more than 500 experienced employees, we're able to achieve monthly output 40000 square meters.

PCB Manufacturing Services

As one of leading printed circuit board manufacturers based in China, JHYPCB has been offering international companies of all sizes with high-quality PCB prototype to production services at fair price for 8 years. To make professional and advanced circuit boards, we're committed to adhering to the strictest standards during PCB manufacturing process, we're fully compliant with the ISO 9001:2008 quality management system.

- Save money&time! Achieve peace of mind!
- A professional and trustworthy PCB Prototype manufacturer.
- Fastest PCB Prototype.
- One stop solution for various PCB&SMT Stencil.
- Low cost for simple PCB.
- Affordable price for high-tech PCB.
- Minimum orders 1pcs.
- 24-hour online customer service.
- Professional PCB engineer for one-to-one service.
- Shipment on time.
- Guarantee good service and quality from PCB quotation to delivery.

PCB Assembly Services

To deliver true value and convenience to our PCB fabrication clients, we expand our business to components sourcing and turnkey PCB Assembly services ranging from prototype, low-to-middle volume to high volume up to 1 million pcs. We can mount components on circuit boards using surface mount technology (SMT),through-hole technology (THT), and manual insertion:

- High quality assembly services with short lead times
- No minimum order
- No additional charge for stencils
- Free DFM Check
- 100% AOI test and X-Ray test for BGAs package
- Function tests & IC programming based on custom requirements

Our company is approved by UL, TS16949, ISO-9001, and RoHS compliance.


All boards are produced according to IPC-6012 standards and inspected according to IPC-A-600 in the latest version. Our products are widely applied in communications, industrial control, power electronics, medical equipment, security electronics, consumer electronics, LED, etc. More than 90 percent of them were exported to Europe, North America, South America.

Scope of business

One stop service include

  • PCB Prototype
  • Quick Turn PCB
  • Single Sided PCB
  • Double Sided PCB
  • Multilayer PCB
  • Rigid PCB
  • Flexible PCB
  • Rigid Flex PCB
  • Aluminum PCB
  • Metal Core PCB
  • Thick Copper PCB
  • High TG PCB
  • PCB Stencil
  • Impedance Control PCB
  • PCB Assembly
  • High Frequency PCB
  • Bluetooth Circuit Board
  • Automotive PCB
  • USB Circuit Board
  • Halogen-Free PCB
  • Antenna PCB

Company Info

  • Company Name: JingHongYi PCB (HK) Co., Limited
  • Representative: Chen Zhi
  • Product/Service: PCB Manufacturer , PCB Prototype , Flexible PCB , Multilayer PCB , Aluminum PCB , Rigid Flex PCB
  • Capital (Million US $): US$1.5 Million
  • Year Established: 2011
  • Total Annual Sales Volume (Million US $): US$50 Million - US$100 Million
  • Export Percentage: 91% - 100%
  • Total Annual Purchase Volume (Million US $): US$10 Million - US$50 Million
  • No. of Production Lines: 8
  • No. of R&D Staff: 5 -10 People
  • No. of QC Staff: 41 -50 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 1,000-3,000 square meters
  • Factory Location: Building 15, Wan Xia Industrial Park, Tongfuyu Industrial Zone, Shajing,Baoan District, Shenzhen, China.
  • Contact Person: Ms. Megan
  • Tel: 86-1351-0758219
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