Getting Your PCB Curing Right with Gallium Iodide Lamps
If you’re running a PCB line, you know the drill. You need your photoresists to harden perfectly—not too soft, not burnt. That’s where our Gallium Iodide lamps come in. They hit those specific 254nm and 313nm marks that make the magic happen. We build them to give you exactly the right amount of punch to set the resin without ruining your substrate. The balance of power Here’s the thing: standard mercury lamps often leave a gap. Gallium iodide fills it. We spend a lot of time tweaking the wattage and tube length because**consistency is everything.**If your UV intensity is patchy across the panel, you’re looking at under-cured resists and “bleeding” during etching. That’s a nightmare. But you can’t just crank the power to the max. Too much heat, and you’ll stress the board. The trick is matching your conveyor speed to the lamp’s wattage. Get that rhythm right, and your dosage will be spot on every time. Dealing with the heat We use high-purity fused quartz for the tubes. Why? Because it lets the shortwave UV zip right through instead of getting trapped in the glass. But be warned: these things run hot. I’ve seen plenty of systems crash simply because the cooling fans weren’t up to the task. If your airflow is weak, the tube overheats. That kills the lamp’s lifespan and makes your UV output tank. Keep them cool, and they’ll keep working. Fitting them into your line You shouldn’t have to rebuild your whole setup to use our lamps. We designed them to slide right into most industrial exposure units. We also obsess over electrode stability. Nobody wants a lamp to burn out in the middle of a big run. Since these lamps can be a bit moody with voltage swings, I highly recommend a stabilized ballast. It stops the flicker and ensures your curing time stays the same, whether it’s the first shift or the graveyard shift. We’re confident in these. If our custom lamps don’t hit the same benchmarks as the big-name brands, we’ll give you your money back. Simple as that.