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Direct Plated Copper (DPC) Ceramic Substrate

DPC is a newest development in the field of Ceramic Substrate PCBs, by magnetron sputtering technology to deposit a metal layer (Ti/Cu target) on the surface of the ceramic substrate which result in copper thickness’ ranging from 10um to 130um, and then photolithography to form circuit patterns, electroplating is used to fill in the gaps and thicken the metal circuit layer, and the solderability and oxidation resistance of the substrate is improved through surface treatment, finally remove the dry film, and etch the seed layer to complete the substrate.

DPC Ceramic Substrate

Features

1. High thermal stability and excellent electrical conductivity
2. Excellent mechanical stability, good adhesion
3. High operating temperatures
4. Excellent electrical insulation
5. Good heat spreading

Application:

1.Cells for Solar Concentrator
2.Hybrid and Electric Automobile
3.Power Management Electronics
3.Sensor in Automotive Motor Control
5.High Power LED
6.Laser System
7.Semiconductor Modules: Such as IGBT
8.Microwave Devices
9.Packages for RF
10.Power Semiconductor Packaging

Ceramic Materials Properties:

Item Unit Alumina ALN
Content % 96% Al2O3
Density g/cm3 ≥3.7 ≥3.3
Thermal Conductivity W/m·K >24 >170
Coefficient of Thermal Expansion 10⁻⁶/K 6.5–7.5 (20–300℃) 4.6 (20–300℃)
Flexural Strength MPa >350 >350
Dielectric Loss ×10⁻⁴ (1MHz) 3 3.8
Dielectric Constant 1MHz 9.8 9
Dielectric Strength kV/mm 14.5 17
Volume Resistivity Ω·cm >1014 >1014
Young’s Modulus of Elasticity GPa 340 320

Capability:

Item Description Capability
Material Al2O3 / AlN
Ceramic Thickness 0.38–1.0mm
Copper Thickness
(When Distance Between Copper)
<0.2mm 10–50μm
0.2–0.5mm 30–80μm
0.6–1.0mm 30–150μm
<0.075mm 30–60μm
Copper Width
(When Copper Thickness)
<35μm ≥0.075mm
35–100μm ≥0.10mm
≥100μm ≥0.15mm
Ag Thickness ≥0.4μm
Surface Treatment NiAu / NiPdAu Ni: 5 ± 2.5μm
Pd: >0.05μm
Au: >0.05μm

Declaration: This is an original article of INNOVACERA®. Please indicate the source link when reprinting: https://www.innovacera.com/product/dpc-ceramic-substrate.

FAQ

A Direct Plated Copper (DPC) Ceramic Substrate is an advanced PCB that utilizes magnetron sputtering and electroplating technologies to deposit a highly precise copper circuit layer onto a ceramic base. Featuring high thermal stability and excellent electrical insulation, it is widely used in demanding thermal management fields, including Hybrid and Electric Automobiles, High Power LEDs, Semiconductor Modules (such as IGBT), and RF/Microwave Devices.

The choice depends on your project’s heat dissipation requirements. Alumina (96% Al2O3) offers excellent mechanical stability with a thermal conductivity of >24 W/m·K, making it a cost-effective choice for general power electronics. Aluminum Nitride (AlN) delivers superior thermal conductivity (>170 W/m·K), which is ideal for extreme high-power applications like laser systems. For both materials, the copper thickness capability ranges from 10μm to 150μm depending on the copper trace distance, fully supporting highly customized circuit designs.

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