Alternate cleaning methods for LCCAs. [LCC (Leadless Chip Carriers)]
The purpose of this project was to evaluate DI water followed by isopropyl alcohol (IPA) cleaning and no cleaning of leadless chip carriers (LCCs). Both environmentally safe methods were to be tested against the current chlorofluorocarbon (CFC) material cleaning baseline. Several experiments were run to compare production and electrical yields of LCCs cleaned by all three methods. The critical process steps most affected by cleaning were wire bonding, sealing, particle induced noise detection (PIND), moisture content, and electrical. Yields for the experimental lots cleaned by CFC, DI water plus IPA, and no cleaning were 56%, 72%, and 75%, respectively. The overall results indicated that vapor degreasing/ultrasonic cleaning in CFCs could be replaced by the aqueous method. No cleaning could also be considered if an effective dry method of particle removal could be developed.
- Research Organization:
- Allied-Signal Aerospace Co., Kansas City, MO (United States). Kansas City Div.
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00613
- OSTI ID:
- 6852280
- Report Number(s):
- KCP-613-5045; ON: DE93013116
- Country of Publication:
- United States
- Language:
- English
Similar Records
Preliminary study of moisture effects on leadless chip carriers (LCCS) from aqueous cleaning
Preliminary study of moisture effects on leadless chip carriers (LCCS) from aqueous cleaning
Related Subjects
ELECTRONIC CIRCUITS
SURFACE CLEANING
ORGANIC SOLVENTS
COMPARATIVE EVALUATIONS
CHLOROFLUOROCARBONS
EXPERIMENTAL DATA
JUNCTION DIODES
PROGRESS REPORT
PROPANOLS
SPECIFICATIONS
TRANSISTORS
WATER
ALCOHOLS
CLEANING
DATA
DOCUMENT TYPES
EVALUATION
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SOLVENTS
SURFACE FINISHING
426000* - Engineering- Components
Electron Devices & Circuits- (1990-)