Home > Blog > Nitrogen generators produce high-purity inert nitrogen. Their core function is to isolate oxygen and water vapor, prevent oxidation of metals and precision materials, and improve product yield.

Nitrogen generators produce high-purity inert nitrogen. Their core function is to isolate oxygen and water vapor, prevent oxidation of metals and precision materials, and improve product yield.

By exgasgenerator August 7th, 2026 8 views

1.SMT/PCB Circuit Board Soldering (Reflow Soldering, Wave Soldering)

Nitrogen purity: 99.99% or higher; 99.999% for high‑end processes, maintaining extremely low oxygen content inside the furnace.

Functions

Inhibit high‑temperature oxidation of solder, reducing solder balls, bridging, cold solder joints, blackened solder joints and voids;

Improve solder wettability, suitable for lead‑free soldering and soldering of miniature BGA/QFN components;

Reduce solder dross generation, extend equipment maintenance intervals, and enhance solder joint strength and reliability. It is widely adopted for automotive electronic circuit boards.

It is also applied in selective soldering and post‑solder nitrogen purging to remove dust and flux residues on board surfaces.

2.Semiconductor and Chip Manufacturing and Packaging

Wafer Manufacturing: In photolithography, etching, CVD thin‑film deposition, diffusion and annealing processes, nitrogen is used as protective gas, carrier gas and purge gas. The purity is ≥99.999%, and 99.9999% for some processes. It prevents oxidation and contamination of silicon wafers and metal thin‑films and guarantees the precision of nanoscale circuits.

Chip Packaging (IC, BGA): Nitrogen is filled in the environment for bonding, sintering and molding to protect gold wires and aluminum wires and avoid pin oxidation. Nitrogen is applied for chamber purging and bare chip storage under inert atmosphere to improve packaging reliability.

3.Production of Display Panels (LCD/OLED)

In OLED evaporation and organic‑material encapsulation processes, organic luminescent materials are highly susceptible to oxidation and failure upon exposure to oxygen. High‑purity nitrogen is introduced into sealed chambers to isolate air, so as to guarantee the luminous efficiency and service life of screens。

4.Lithium‑ion battery manufacturing (batteries for consumer electronics)

Nitrogen purity ≥99.999% with an extremely low dew‑point requirement;

A nitrogen‑filled environment free of oxygen and with low moisture is maintained throughout the processes of electrode preparation, electrolyte injection, sealing and formation. It prevents the oxidation of lithium‑based materials, guarantees the cycle life of batteries, and reduces production‑related safety risks.

5.Heat Treatment and Storage of Electronic Components

For electronic ceramics, piezoelectric components, magnetic materials and electronic copper strips: nitrogen shielding is adopted in sintering, annealing and reduction processes to prevent workpieces from oxidation and discoloration under high‑temperature conditions.

Chips, photosensitive materials, electronic pastes and photoresists are sealed under nitrogen to isolate oxygen and moisture, slow down oxidation and moisture damage of components, and extend shelf‑life.

6.Other Auxiliary Applications

Nitrogen purging and replacement of equipment and pipeline cavities to remove oxygen and moisture;

Leak detection and pressure testing;

Protection of local inert environments in clean workshops.

The electronics industry predominantly adopts PSA pressure‑swing‑adsorption nitrogen generators plus post‑purification units for on‑site gas production with 24‑hour continuous gas supply. Compared with externally purchased liquid nitrogen cylinders, this solution cuts long‑term operating costs and delivers stable and controllable gas supply.

Core Application of Oxygen Injection into Fermentation Tanks via Oxygen Concentrator