Getting Your PCB Curing Right with Gallium Iodide Lamps
If you’re working with photoresists in a PCB shop, you know the struggle of getting that cure just right. Standard UV lamps usually don’t cut it. That’s where our gallium iodide lamps come in. They aren’t just “another light bulb”—they’re built specifically to punch through the resist layer and get the job done, even on the fastest automated lines. The secret is in the spectrum. Inside the tube, the gallium iodide mix does something clever. It blends ultraviolet with short-wave infrared radiation. Why does that matter? Because it means the surface doesn’t just look cured—the bottom of the resist layer actually gets the energy it needs. No more worrying about under-exposed spots at the base of your board. You can go with high-wattage options to speed up your line, but here’s a heads-up:**watch your cooling.**If your fans aren’t up to the task and the housing gets too hot, your lamps are going to burn out way faster than they should. Built to actually last We use high-purity quartz glass for the envelope. We do this so the light doesn’t get filtered out before it even hits the board. These are designed to be simple drop-in replacements for most industrial exposure frames. We also beefed up the electrodes. Since these things get powered on and off constantly, standard electrodes just give up. Ours don’t. And we’re obsessive about the seal between the quartz and the lead wires. A tiny gas leak is usually what kills these lamps prematurely, so we make sure that seal is airtight. The real-world trade-off Using these lamps means your “bake” and “cure” cycles shrink, which means you’re pushing more boards out the door. It’s a win for your throughput. But keep in mind, these run hotter than those old mercury vapor tubes. You can’t just swap them into an ancient rig and hope for the best. Check your power supply and your heat sinks first. If you don’t have active ventilation, the heat buildup can actually warp your substrates. That’s a headache nobody wants. We ship these directly from our own supply chain. No middlemen, no weird markups—just factory pricing for high-grade quartz.