UV gallium lamp for PCB exposure

Sun, 05 Jul 2026 18:23:29 +0800

Introduction

Let’s get straight to it. We built this UV gallium lamp for one reason: to handle the tough demands of PCB exposure. This isn’t some run-of-the-mill UV light. It’s a high-intensity, short-wavelength powerhouse, designed to deliver a precise blast of energy. When you need a clean, fast cure on solder mask or legend ink, this is the tool that gets the job done right, every single time.

The Heart of the Machine

Here’s the secret sauce: the gallium-doped design. It shifts the spectral peak to focus on delivering high-energy photons exactly where they’re needed. That focus on short wavelengths is what kicks off rapid polymerization without scorching your substrate. And it runs on a 400V high-voltage input. That’s non-negotiable. It’s what’s needed to fire up the arc and keep the light output steady across the entire tube. The specs speak for themselves. At 300mm long and 2500W, you get serious power density. This is the kind of intensity that can fully cure thick solder mask layers in seconds, so your production line never has to pause. But with that kind of power comes heat. So, you need to make sure your cooling system is up to the task. It has to be able to handle the temperature rise, plain and simple.

Gallium iodide lamp for exposure unit

Wed, 24 Jun 2026 07:01:35 +0800

On the press floor, makeready speed is everything. When the exposure unit goes down, it doesn’t care about your schedule—it hits the ink train, the delivery promise, and the whole plan. We supply UV lamps for printing systems, and we built our gallium iodide lamps for exposure units to keep exposure consistent and the replacement cycle predictable. The payoff is simple: run high-turn jobs without having to carry a mountain of safety stock. What matters technically Gallium iodide doping pushes the spectral output toward the 365–405 nm window. That lines up with what most photoinitiators absorb, while cutting the extra short-wave energy that tends to make heat and ozone. You get a stable, repeatable dose across the substrate. Expect tight spectral stability, a steady irradiance profile along the arc length, and a lamp life curve that holds output for thousands of hours. These units regularly hit 5,000+ hours with less than 5% output drop. The reflector geometry and dichroic coatings are matched to the arc gap and exposure geometry, so the energy lands where the photopolymer needs it, not scattered into the corners. Why it holds up on a busy floor High-turn work means exposure cycles and lamp starts, over and over. Our gallium iodide lamps come up to stable output quickly, so repeatability doesn’t drift between jobs. Fewer re-exposures. Tighter tolerances. And the press keeps moving. Add long service life and predictable end-of-life behavior, and you can plan replacements around production windows instead of scrambling after an emergency stop. The supply chain is part of the system, too: we ship fast, so you can trim spare-lamp inventory without betting the uptime. Here’s what to watch for Match the lamp to the exposure unit—ballast, ignition profile, and reflector focal distance. Gallium iodide lamps don’t like undersized ballasts or repeated hot restarts. Stay within the specified starting and warm-up parameters to keep output stable. Also, check how your controller handles end-of-life. If it’s expecting a pure mercury curve, it can misread a gallium iodide lamp.

Exposure on UV Curing Wave

UV gallium lamp for PCB exposure

Introduction

The Heart of the Machine

Gallium iodide lamp for exposure unit