AI‑driven computing power surges raise cabinet power consumption, pushing traditional air‑cooling to its physical limits. Immersion liquid cooling has become the mainstream thermal solution for AI data centers. This article analyzes core properties of electronic fluorinated fluids, compares key parameters of HFE‑7500 and FC‑40, and provides medium‑selection guidelines as well as domestic alternative references.

Electronic fluorinated liquids span multiple semiconductor process steps including fixture cleaning, equipment temperature control, advanced packaging cleaning, coating dilution, reliability testing, airtightness leak detection, and MEMS drying.

Perfluoroalkyl sulfonate‑based fluorinated flame‑retardant additives can render transparent polycarbonate achieve UL94 V‑0 flame‑retardant rating at ultra‑low loading of several ten‑thousandths, while fully preserving the optical transparency of the material. This represents a key technical breakthrough in flame‑retardant modification of engineering plastics.

HFE‑7500 is a hydrofluoroether‑based fluorinated fluid. Characterized by low viscosity, chemical inertness and high thermal stability, it has become one of the most widely‑used continuous phases for water‑in‑oil systems in droplet microfluidics. It is especially suitable for scenarios requiring resistance to high‑temperature thermal cycling.

Hydrofluoroethers (HFE) are specialty fluorinated liquids composed of hydrogen, fluorine, oxygen and carbon. Featuring zero ozone‑depletion potential, low global‑warming potential, non‑flammability and high dielectric strength, they have become core working fluids for precision cleaning and immersion liquid cooling.

The global market for intelligent robot vacuums is booming, with all-in-one sweeping and mopping products becoming mainstream. However, mopping and hot-air drying induce internal condensation, causing PCBA corrosion and failures. This paper analyzes the exclusive failure modes and explores board-level protection solutions for robot vacuums.

From IPX4 to IPX8, simply applying a thicker coating is not enough — it requires coordinated upgrading of coating film thickness, material system, and structural sealing. This article breaks down the true meaning of each IPX level, explains how the three lines of defense work together, and provides an actionable upgrade roadmap from IPX4 to IPX8.

This article systematically compares three mainstream PCBA protection schemes — conformal coating, potting, and nano coating — across four dimensions: the fundamental nature of film thickness, an eight-dimensional comparison, a selection decision framework, and composite solutions. The core message is simple: there is no "best" scheme, only the "best-matched" one.

Thanks to its low surface tension for capillary penetration, the nano‑coating can reach traditional coating blind spots such as underneath BGAs and pin gaps of 0201 components, eliminating protection dead zones for PCBs.

Benefiting from molecular‑level penetration capability, nano‑coatings can penetrate into micro‑gaps as small as 0.1 μm to form uniform nano‑scale protective films, delivering a brand‑new solution for PCB protection.