Product Overview

BF33 glass, also known as BOROFLOAT® 33 borosilicate glass, is a high-performance float glass material with excellent thermal stability, high optical transparency, low thermal expansion, and strong chemical resistance. It is widely used in semiconductor processing, MEMS devices, microfluidics, optical windows, sensor packaging, laboratory instruments, and high-temperature observation applications.

Compared with ordinary soda-lime glass, BF33 glass offers better dimensional stability under temperature changes and improved resistance to chemical corrosion. Due to its low coefficient of thermal expansion, BF33 is also suitable for silicon-glass bonding, wafer-level packaging, and precision glass substrate applications.

Key Features

Low Thermal Expansion

BF33 glass has a low coefficient of thermal expansion, which helps reduce thermal stress, deformation, cracking, and bonding failure during heating or cooling processes. This makes it suitable for thermal cycling, anodic bonding, semiconductor processing, and high-temperature applications.

Excellent Thermal Resistance

BF33 borosilicate glass provides excellent heat resistance and thermal shock resistance. It can maintain stable performance under elevated temperature environments, making it ideal for high-temperature observation windows, furnace windows, heating platforms, and industrial equipment.

High Optical Transparency

BF33 glass offers high transparency in the visible and near-infrared range. Its clear appearance and good optical uniformity make it suitable for optical windows, sensor covers, inspection windows, microfluidic chips, and analytical instruments.

Strong Chemical Stability

BF33 glass has good resistance to water, acids, alkalis, and many organic solvents. It is suitable for chemical analysis, laboratory devices, biomedical testing, microfluidic systems, and harsh industrial environments.

Good Mechanical Strength and Processability

BF33 glass has good hardness, wear resistance, and mechanical strength. It can be processed into customized shapes and sizes according to customer drawings, including cutting, grinding, polishing, drilling, slotting, chamfering, CNC machining, coating, and cleaning.

Typical Applications

Semiconductor and MEMS

BF33 glass can be used for MEMS devices, sensor packaging, silicon-glass anodic bonding, wafer-level packaging, carrier wafers, and temporary bonding processes. Its low thermal expansion helps reduce mismatch stress between silicon and glass.

Microfluidics and Biochips

With excellent transparency, chemical resistance, and surface quality, BF33 glass is suitable for microfluidic chips, lab-on-a-chip devices, biomedical testing chips, capillary electrophoresis chips, and chemical analysis platforms.

Optical and Observation Windows

BF33 glass is commonly used for optical windows, industrial observation windows, high-temperature viewing windows, inspection windows, laser equipment windows, and protective covers for instruments.

Laboratory and Industrial Equipment

BF33 glass can be used in laboratory reactors, chemical analysis instruments, vacuum equipment windows, furnace observation windows, medical analysis devices, and industrial machine vision components.

Customization Options

Typical Material Properties

Note: The above values are typical material properties for reference only. Final specifications can be customized according to customer drawings, application requirements, and inspection standards.

Product Summary

BF33 borosilicate glass combines low thermal expansion, high optical transparency, excellent heat resistance, chemical stability, and good mechanical strength. It is an ideal glass material for semiconductor manufacturing, MEMS packaging, microfluidic devices, optical windows, laboratory instruments, and high-temperature industrial applications.

With stable material properties and excellent processing compatibility, BF33 glass is a reliable choice for precision glass substrates, silicon-glass bonding, sensor covers, optical inspection systems, and customized technical glass components.

FAQ

Q1: What is BF33 glass?

BF33 glass is a high-quality borosilicate float glass material. It is known for its low thermal expansion, high transparency, excellent thermal resistance, and strong chemical stability.

Q2: Is BF33 glass the same as BOROFLOAT® 33?

Yes. BF33 is commonly used to refer to BOROFLOAT® 33 borosilicate glass or equivalent borosilicate glass materials with similar properties.

Q3: What are the main advantages of BF33 glass?

The main advantages include low thermal expansion, high optical transparency, good thermal shock resistance, excellent chemical resistance, and stable mechanical performance.

Q4: What applications is BF33 glass suitable for?

BF33 glass is suitable for semiconductor processing, MEMS devices, microfluidic chips, optical windows, laboratory instruments, high-temperature observation windows, sensor covers, and industrial equipment.