Let's be real-choosing an annealing furnace isn't just checking boxes. It's about finding something that fits your workflow, whether you're tinkering in a lab or churning out wafers 24/7. We've got six RTP (Rapid Thermal Processing) models, each built for specific jobs, so let's break down how to zero in on the one that actually works for you-not the other way around.
First: Nail Down the Basics That Matter Most
Before you get bogged down in specs, start with three simple questions. These will cut through the noise faster than anything else.
1. How Much Are You Making, and What Size Wafers Do You Use?
Your output and wafer size are non-negotiable-they'll immediately rule out models that can't keep up or fit your parts.
For example:
If you're a university lab testing new materials with 4-inch wafers (and only need a handful per week), our Desktop RTP equipment is perfect. It maxes out at 6 inches and fits on a workbench-no giant footprint needed.
If you're cranking out 8-inch wafers (say, 500 to 2,000 a week) for medium-volume production, the Semi-Automatic RTP equipment makes sense. It handles 8–12 inches and cuts down on manual work without the cost of full automation.
For high-volume shops (2,000+ wafers a week, 12-inch size), you'll want the Automatic RTP equipment or High-Temperature Oxidation RTP equipment. The Automatic one runs 24/7 with robots-no human error slowing things down.
It's simple: Don't buy a 12-inch-capable furnace if you only use 6-inch wafers. You'll waste space and money.
2. What Exactly Are You Trying to Do?
Our furnaces aren't one-trick ponies-but they are optimized for specific jobs. If you need to grow SiO₂ films for CMOS chips, don't grab a model built for low-heat annealing.
Here's the quick match:
Growing clean, dense SiO₂ films (for IGBTs or MEMS)? Go with the High-Temperature Oxidation RTP equipment. It hits the precise temps (600–1150℃) and keeps oxygen super low-critical for film quality.
Need to switch between oxidation, diffusion, and annealing (all in one machine)? The Oxidation and Diffusion RTP equipment is your guy. It has 1–4 process tubes, so you can run two jobs at once if you need to.
Working with optoelectronics (like VCSELs) that need low-heat annealing (250–500℃)? The Low-Temperature RTP equipment is made for this. It avoids burning delicate materials and keeps particulates down-key for opto-device performance.
Just need basic annealing (like ion implantation touch-ups) for prototypes? The Desktop RTP does the job without overcomplicating things.
3. What Materials Are You Working With?
Not all furnaces play nice with every material.
Skip the guesswork:
Silicon (for ICs or standard IGBTs)? Most models work, but the Oxidation and Diffusion RTP equipmentis great if you need multiple processes.
Wide-bandgap stuff like SiC or GaN (for EV power modules)? The Oxidation and Diffusion RTP equipment handles their high-heat needs (400–1200℃), or the High-Temperature Oxidation RTP if you're focusing on films.
Lithium niobate (for optoelectronics)? Stick to the Low-Temperature RTP equipment. Its 250–500℃ range won't damage the material like a high-heat model would.
Next: Dive Into Specs That Actually Impact Your Work
Once you've got the basics, it's time to check the specs that will make or break your process. Don't get hung up on every number-focus on these three.
Temperature Control: Get It Right, or Your Parts Will Suffer
If your process needs tight temp control, don't compromise. For example:
The Low-Temperature RTP equipment has an 860mm flat zone (that's the area with consistent heat) - perfect for making sure every wafer in a batch gets the same treatment.
The High-Temperature Oxidation RTP equipment hits ±0.5℃ accuracy-non-negotiable if you're growing SiO₂ films where even a tiny temp shift ruins quality.
If you switch between low and high temps (say, 500–1000℃), the Semi-Automatic or Automatic RTPs have dual control: thermocouples for lower temps, pyrometers for higher ones. No manual adjustments needed.
Automation: How Much Work Do You Want to Do?
Automation isn't just "fancy"-it's about consistency and speed.
If you're a lab with one person handling samples, manual loading (Desktop RTP equipment) is fine. You won't need robots for 10 wafers a week.
For medium volume, the Semi-Automatic RTP's auto chamber door saves time-you load the wafer, hit start, and the door opens/closes on its own. Less standing around, fewer mistakes.
High-volume shops? The Automatic RTP's robots handle loading, aligning, and cooling-plus it connects to your production management system. It even has a wafer breakage rate under 1 in 10,000. Worth the investment if downtime costs you money.
Atmosphere: Keep Impurities Out (If You Need To)
If your process is sensitive to oxygen (like semiconductor doping), don't skip this.
The Semi-Automatic and Automatic RTPs keep oxygen under 1 ppm-super clean. They also have 6 MFCs (mass flow controllers) to tweak gas mixes exactly how you need.
The Desktop RTP equipment is under 3 ppm-good enough for basic jobs, but not for ultra-pure processes.
If you're just doing simple oxidation, 3 ppm is fine. If you're making chips where even a tiny impurity kills performance, spring for the <1 ppm models.
Finally: Don't Forget the Practical Stuff
Even the best furnace won't work if it doesn't fit your space or budget.
Space: Measure First, Buy Later
Lab or small shop? The Desktop RTP is 910mm×860mm×695mm-about the size of a large desk.
Medium facility? The Semi-Automatic RTP (8-inch model) is 970mm×1550mm×2160mm-still manageable, but you'll need a dedicated spot.
Big factory? The Automatic RTP's dual-cavity model is 2100mm×2450mm×2200mm-make sure you have room to move around it.
Safety: It's Non-Negotiable (But We've Got You Covered)
All our models meet SEMI S2 standards-industry rules for safety. But some have extra perks:
The Automatic RTP equipment has a one-button emergency stop and alerts you to overheating or water leaks-critical for 24/7 operation.
The Desktop RTP equipment has buzzers and warning lights-simple, but effective for labs where someone might be juggling multiple tasks.
Still Stuck? We're Here to Help
Let's be honest-sometimes you need to talk through it. If you're on the fence (say, choosing between Semi-Automatic and Automatic for growing volume), we can:
Walk through your current workflow and how you might scale.
Show you a demo of how a model would handle your specific process.
Even tweak a model (like adding extra process tubes) to fit your needs.
We don't sell "one-size-fits-all"-we sell furnaces that work for your job. Whether you're testing new materials or running a production line, there's a model that's right for you.
Just reach out to our tech team-we'll help you find it.
