Getting Your PCB Curing Right with Gallium Iodide Lamps
If you’re running a PCB line, you know the headache of a bad cure. That’s why we use Gallium Iodide (GaI) lamps. They aren’t your run-of-the-mill UV lights. They hit a very specific sweet spot between 250nm and 350nm, which is exactly what dry film resist (DFR) needs to set properly.
Sharp Lines, No Mess
Here’s the thing about PCB circuitry: tolerances are brutal. You can’t afford for the light to bleed. Our lamps create a concentrated UV peak that kicks the polymerization process into high gear. It’s fast. Really fast. And because the light doesn’t scatter as much as broad-spectrum bulbs, you get crisp, sharp edges on your traces. No “undercutting,” no blurry lines—just clean boards. Plus, if you’re cranking up your line speed to hit a deadline, you’ll need more power density to keep that cure depth consistent. We build our lamps with the wattage to handle that pressure without breaking a sweat.
Don’t Let Them Overheat
Now, a fair warning: these things gethot. To keep the glass from cracking under all that thermal stress, we use high-purity fused quartz. But we can’t do all the work for you. Keep your cooling fans clean. If dust builds up and the housing overheats, the Gallium starts to migrate. When that happens, your UV intensity drops and the lamp burns out way sooner than it should. These aren’t “set it and forget it” parts. Keep an eye on your run hours so you don’t end up with a batch of under-cured boards.
Fitting Them Into Your Shop
If you’re running a smaller operation, you probably don’t want to rip out your entire electrical system just to upgrade your lights. We get that. That’s why we make our UV systems easy to swap into older, clunky arrays. They fit right into existing conveyors. We can even customize the length to match your specific panel sizes so you aren’t wasting energy. One quick tip: just make sure your power supply can handle the initial current spike when these lamps kick on. Once they’re humming, you’re good to go.