Views: 0 Author: Site Editor Publish Time: 2025-12-11 Origin: Site
Last time we broke down what etch factor is for DBC ceramic PCBs—and promised to dive into what affects it, plus how to tweak it for top-tier boards. Let's jump right in.
First, the key factors that move the needle on etch factor: the makeup, concentration, and temperature of your etching solution are non-negotiable. Then there’s the copper layer itself—its thickness and surface area on the ceramic substrate directly shift how the etchant interacts with the material.
Why does this matter? For DBCs used in semiconductors, LEDs, or power semiconductor coolers, dialing in etch factor makes or breaks reliability. Here’s a real-world tweak we’ve refined: adjust your phototool design spacing to 0.43mm and crank up the etching line speed to 0.8250m/min. This drops the etch factor to 2.19—low enough to boost thermal shock cycles significantly, a must for harsh operating conditions.
Getting this balance right isn’t just about specs—it’s about matching tweaks to your end-use. As a PCB manufacturer focused on ceramic board precision, we’ve honed these adjustments to hit consistent quality.
Need help optimizing etch factor for your DBC project? Reach out to our team—we’ll align the process with your performance goals.
