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Non-Fabrication Processing

Packaging and Encapsulation

After wire bonding is completed, the combined components are placed into a molding press and encapsulated in either ceramic or plastic materials. Final computer tests are then performed to evaluate whether the product meets specifications. According to test performance, the packages are separated into low- and high-quality circuits. The finished product is then packaged, labeled, and shipped to the customer.

The following are the potential hazards of packing and encapsulation.

Plastic Resins, Hardeners, and Fillers

Potential Hazard

  • Possible employee exposure to plastic resins, hardeners, and fillers used for encapsulation.

Possible Solutions

  • Identify chemical hazards and perform appropriate exposure evaluations.
    • Perform exposure measurements for the solvents used.
    • 29 CFR 1910.1000 Table Z-1 contains permissible exposure limits for various chemicals.
    • Address all dermal exposures.
  • Provide appropriate ventilation to reduce solvent concentration levels in the air.
  • Provide PPE as appropriate to prevent eye and skin contact. [29 CFR 1910 Subpart I]
  • Use respiratory protection when necessary to further reduce exposure and protect employees. [29 CFR 1910.134]

Additional Information

  • Occupational Health Guidelines for Chemical Hazards. US Department of Health and Human Services (DHHS), National Institute for Occupational Safety and Health (NIOSH) Publication No. 81-123, (1981, January). Provides a table of contents of guidelines for many hazardous chemicals. The files provide technical chemical information, including chemical and physical properties, health effects, exposure limits, and recommendations for medical monitoring, personal protective equipment (PPE), and control procedures.

OSHA Safety and Health Topics Pages:

Ultraviolet (UV) Radiation

Potential Hazard

  • Possible employee exposure to ultraviolet (UV) radiation from certain types of testing equipment.

Possible Solutions

  • Identify UV hazards; perform exposure evaluations when applicable.
  • Enclose operations with UV emissions; provide shielding and interlocks as necessary.
  • Provide PPE as appropriate during operations when exposure is necessary. [29 CFR 1910 Subpart I]
  • Implement UV radiation safety programs to further identify and control UV hazards.
  • Provide adequate ventilation to control ozone concentrations, which may be generated from UV radiation.

Additional Information

OSHA Safety and Health Topics Pages:

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