DPC Ceramic PCB Custom For New Energy Vehicles

DPC Ceramic PCB Custom For New Energy Vehicles

Substrate material: Al2O3
Board thickness: 0.635mm+/- 0.1mm
Conductor: 35um copper
Solder mask: White
Silkscreen: N/A
Surface finishing: ENIG 1u’’
Application: Lithium battery

Item1	DPC Capabilities
Layer Count	1-2 Layers
Max Board Dimension	120mmx180mm
Min Board Thickness	0.15mm
Max Board Thickness	6.0mm
Conductor Thickness	50/50μm
Min Line Width/Line Space	3/3mil (0.075/0.075mm)
Substrate Type	AI2O3, ALN, Si3N4
Substrate Thickness	0.15-6mm
Min Hole Diameter	100μm
Min Hole Spacing	250μm
Min PAD Ring(Single)	0.125mm
PTH Wall Thickness	8um
Min Solder PAD Dia	0.25mm
Min Soldermask Bridge	Green Oil 130μm; Others 150μm
Min BAG PAD Margin	0.3mm
PTH/NPTH Dia Tolerance	0.05/0.075mm
Hole Position Deviation	50-75μm
Outline Tolerance	Laser: +/-0.13mm
Line Width/Spac Tolerance	±20%
Surface Treatment	OSP/Immersion Gold/Nickel Plated Gold/Immersion Silver/Nickel Plated
Thermal Stress	7.3pmm/k

Item2	Attribute
Brand	CeramTec / GTT / Huaqing / Laird / Maruwa / Rogers / Toshiba
Base Material	AI2O3
Base Material Thickness (exclude conductor)	0.15-6mm
Thermal Conductivity	24-170W/mk
Soldermask Type	Aluminum Oxide
Tg Value	800℃
Halogen Free	No
Breakdown Voltage	15 KV/mm
Dielectric Constant (MHZ)	9.4 (1MHz); 9.1 (13GHz)
Water Absorption	≤0.5%
ROHS	Yes
Flammability	Grade A
Thermal Conductivity (W/m.K, or W/m.C)	24-170 W/mk
Dielectric Strength	>15 KV/mm
Wrap & Twist	3%

Prototype(<1m²)	Layers	Normal Service	Expedited Service
DPC Ceramic PCB	1 Layer	DPC: 2 - 3 weeks	DPC: 1.5 weeks
	2 Layers	DPC: 2 - 3 weeks	DPC: 1.5 weeks

Production	Layers	Normal Service	Expedited service
DPC Ceramic PCB	1 Layer	DPC: 3 - 4 weeks	DPC: 1.5 - 2 weeks
	2 Layers	DPC: 3 - 4 weeks	DPC: 1.5 - 2 weeks

Why Ceramic PCB has such excellent performance?

Advanced Ceramic Materials: Ceramic PCBs are constructed using high-quality materials such as alumina (Al2O3), aluminum nitride (ALN), or beryllium oxide (BeO). These materials offer excellent thermal conductivity, electrical insulation, and mechanical strength.

Conductors: Depending on the technology used, ceramic PCBs employ different conductive materials. Thin and thick film technology typically utilizes silver palladium (AgPd) or gold-palladium (AuPd), while Direct Copper Bonded (DCB) PCBs exclusively use copper conductors. These conductive materials ensure reliable electrical connectivity and efficient signal transmission.

Wide Temperature Range: Ceramic PCBs can operate in extreme temperatures ranging from -55°C to 850°C. This makes them suitable for applications in environments with significant temperature variations.

High Thermal Conductivity: Ceramic PCBs exhibit impressive thermal conductivity values, ranging from 24W/m-K to 28W/m-K for alumina, 150W/m-K to 240W/m-K for aluminum nitride, and 220W/m-K to 250W/m-K for beryllium oxide. This high thermal conductivity enables efficient heat dissipation, preventing component overheating and ensuring optimal performance.

DPC Ceramic PCB Specification:

Substrate material:	Al2O3
Board thickness:	0.635mm+/-0.1mm
Conductor:	35um copper
Solder mask:	White
Silkscreen:	N/A
Surface finishing:	ENIG 1u’’
Application:	Lithium battery

Lithium Battery System PCB Design DPC Ceramic Substrate-Bestceramicpcb

Background:

Lithium Technology is a leading manufacturer of lithium battery

Artificial intelligence and environmental protection are recommended to launch electric cars in the automotive industry, which mainly store electricity through batteries, using dpc ceramic substrates as lithium batteries to achieve better current and heat dissipation functions, and promote market demand for new energy vehicles.

PCB challenge:

The substrate thickness is too thin and it is not easy to set the laser energy, if too high the cutting-edge will become black easily.

Solution:

After checking the gerber file and understanding the end-application, our team suggested to use aluminum nitride material as the base since it has the good thermal management than aluminum oxide and optimized the line width to smooth the production.

To overcome the black edge challenge, we fabricated the first article for laser energy evaluation, and after several experiments, we got the best energy that can ensure the edge still keep the original color and protect the edge well.

Result and Benefits:

After receiving the ceramic PCB, customer tested all the boards first and all of them passed. Then they bonded the board into the converter and found the thermal conductivity was greatly improved than previous chip, meanwhile, the durability also better than normal circuit boards. “It is really a big innovation for us”, they said, they praised our professionalism and committed that we will be the first choice if they need ceramic PCB again.