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This ultrapure inline PFA fluid heater is purpose-built for heating deionized water within high-purity semiconductor wet processing workflows. Constructed from virgin high-grade PFA fluoropolymer, it delivers exceptional chemical inertness, ultra-low particle release and minimal metal ion leaching, fully compatible with the strict cleanliness requirements of semiconductor manufacturing.
Different from conventional immersion heating devices, this inline design allows deionized water to flow directly through the sealed heating channel. It eliminates dead zones and stagnant liquid areas that easily breed contaminants. The smooth seamless PFA inner surface prevents scaling and residue accumulation, maintaining stable water purity throughout continuous operation.
It supports precise temperature control to match the heating parameters of DI water cleaning, etching and rinsing stations. The integrated heating core features fast thermal response and uniform heat transfer, avoiding local overheating that may degrade fluid quality or damage process media. The whole assembly can be fitted with temperature sensors, safety interlocks and leak detection modules to meet SEMI S2 and S3 safety standards for semiconductor equipment.
Compact pipeline structure makes it simple to integrate directly into existing fluid piping loops without extra large tank modification. It works reliably under continuous 24-hour running conditions, resisting most clean chemistries alongside deionized water.
We provide fully customized sizing, power ratings, connection flange styles and sensor configurations according to your process layout. Every unit goes through strict purity and pressure testing before delivery.
Rely on this PFA inline heater to keep your DI water heating consistent, clean and stable for your high-end semiconductor wet process line.
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Heater
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PFA In-line Chemical Heater
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|---|---|
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Wattages
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1.5-12 kW
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Process Chemistries
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Dilute Hydrofluoric acids (DHF),
Buffered Hydrofluoric acids (BHF), Buffered Oxide etch (BOE), Alkaline Chemicals (TMAH, KOH, NAOH), Fluorinated Solvents, Hydrofluoric Acid, Glycol, and much more. |
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Max Operating Temperature
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180°C (consult factory
for higher temperatures) |
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Max Pressure
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40 psi at 180°C
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Voltages
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200-400VAC,
single or 3 phase model dependent |
Typical Operation & Application In Semiconductor Fabs
This ultrapure inline PFA fluid heater is widely deployed on wet benches for wafer fabrication, mainly for heating deionized (DI) / ultra-pure (UPW) water in point-of-use recirculation pipelines.
1. Wafer wet cleaning & megasonic rinsing
It heats DI water for SC1, SC2 cleaning sequences and post-etch rinsing. Stable, contamination-free warm DI water removes particles, organic residues and metallic contaminants from wafer surfaces. The inline structure avoids dead volume and secondary pollution, which is critical for advanced node wafer cleaning.
2. Post-develop and post-strip rinsing for photolithography
Used for heating rinse water after photoresist developing and photoresist stripping. Consistent temperature helps uniform residue removal and reduces watermarks on patterned wafers.
3. Etch process post-rinse station
After oxide, nitride or poly silicon wet etching, heated DI water is delivered to rinse away residual etching chemistries. Precise temperature control prevents uncontrolled side etching and surface damage to delicate thin films.
4. Recirculation loop for high-purity fluid supply cabinet
Installed inside chemical delivery cabinets and UPW circulation loops. It maintains set temperature continuously before the fluid reaches the process chamber, supporting 24/7 non-stop fab operation.
5. Special substrate & compound semiconductor processing
Suitable for silicon carbide, gallium nitride and other compound wafer cleaning lines. Low metal ion extraction avoids introducing contamination that impacts device yield.
Working conditions: Usually runs from room temperature up to 85–90°C. Wetted surfaces are all virgin PFA, meeting SEMI S2/S3 purity and safety requirements. It can be fitted with temperature transmitters, leak detection and over-temperature interlock protection for automatic wet process equipment.