Non-CFC cleaning of printed wiring boards
Recent government actions to eliminate Chlorofluorocarbons (CFCs) and Chlorinated Hydrocarbons (CHCs) from the industrial environment require the evaluation of new cleaning solvents and processes. High reliability printed wiring board (PWB) assemblies require cleaning to remove process materials which could lead to corrosion or degradation of the electrical performance of the boards. In the past, CFCs have been used extensively for PWB cleaning purposes. Concerns about CFC emissions and their effect on ozone depletion in the atmosphere, greater demands on cleaning systems, and the availability of alternative cleaning methods are requiring manufacturers of electronic assemblies to reconsider the choice of cleaning methods. We will review some of the presently available cleaning solvents and discuss the results of our work using a terpene-based cleaner. 5 refs., 4 figs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6015086
- Report Number(s):
- SAND-91-0444C; CONF-910279--13; ON: DE91009252
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
426000 -- Engineering-- Components
Electron Devices & Circuits-- (1990-)
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION ABATEMENT
CHLORINATED ALIPHATIC HYDROCARBONS
CLEANING
COPPER
EFFICIENCY
ELECTRONIC CIRCUITS
ELEMENTS
EVAPORATION
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HAZARDOUS MATERIALS
LAYERS
MATERIAL SUBSTITUTION
MATERIALS
METALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OZONE LAYER
PHASE TRANSFORMATIONS
POLLUTION ABATEMENT
PRINTED CIRCUITS
SOLVENTS
SURFACE CLEANING
SURFACE FINISHING
TERPENES
TRANSITION ELEMENTS