Technical Application of Gallium Iodide Lamps in PCB Photoresist Curing

Wed, 02 Sep 2026 20:45:45 +0800

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.

Photoresist on UV Lamp Factory

Technical Application of Gallium Iodide Lamps in PCB Photoresist Curing

Getting Your PCB Curing Right with Gallium Iodide Lamps

Sharp Lines, No Mess