Description
What is DPC Ceramic PCB ?
DPC (Direct plated copper) technology is sputtering a thin titanium or copper layer onto a Ceramic substrate ( like Al₂O₃ or AlN) in a vacuum chamber, then the seed layer is electroplated to build up a thicker copper coating (thickness above 10 μm). Finally, with the photolithography and etching, create precise circuit traces.
The process of DPC Ceramic PCB manufacturing
1. Pretreatment: Choosing the Ceramic substrate, and cleaning, polishing it to ensure there is no contamination
2. Metallization: using the PVD magnetron sputtering technology, and deposit a titanium or copper layer on the Ceramic material.
3. Photolithography: Using the photolithographic technology, transfer the designed circuit patterns to the metallized Ceramic substrate.
4. Etching: Using the etching technology to remove the uncovered copper areas by photoresist, thus forming the circuit pattern
5. Soldermask and silkscreen printing: Printing soldermask and silkscreen on the PCB
DPC Ceramic PCB Advantage:
High Thermal conductivity: Ceramic PCB (AIN) can be 200W/MK, which can be used in high-power devices for heat dissipation. Low DK (dielectric constant ε＜9 ）and dissipation factor（tanδ＜0.002） make it suitable for the RF/microwave components
High-Density Packaging: It can support the micron-level circuit integration and enable to minimization of the electronic products.
Stable Mechanical Properties: Copper-ceramic bonding strength >15MPa with excellent thermal shock resistance and mechanical impact resistance.
Dimensional Stability: Matched coefficient of thermal expansion (CTE) with chips to reduce thermal stress risks.
Reliable Soldering: It can solder the chips directly to the surface copper layer to simplify the packaging processes
The difference between DPC, DBC, and AMB Ceramic PCB
DPC-Direct Plate Copper; DBC- Direct Blonded Copper; AMB- Active Metal Brazing
No matter you are looking for DPC Ceramic PCB or DBC and AMB technology Ceramic boards, and you can always feel free to contact us for your questions or inquirys. Contact FX PCB now to get an answer!
