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ASTM F677-04

(Test Method)

Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications

Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications

SIGNIFICANCE AND USE
Fluids and greases in contact with encapsulating compounds may adversely modify the encapsulant properties with resulting damage or loss of protection to components in electronic applications.
This test method provides a means for measuring the effect of fluids and greases on various encapsulants.
This test method is intended for use in research and evaluation.
SCOPE
1.1 This test method determines the resistance of encapsulating compounds to fluids or greases by measuring changes in weight (Note 0) and volume under defined conditions of time and temperature. Note 0To provide consistency with the usage in other ASTM test methods concerned with determining the properties of plastic materials, the terms "weight" and "weigh" are used in this test method although the units of measurement are those of mass.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See 9.1.
1.3 The values stated in SI units are standard. The values in parentheses are for information only.Note 2
There is no similar or equivalent IEC standard.

General Information

Status
Historical
Publication Date
29-Feb-2004
Technical Committee
D09 - Electrical and Electronic Insulating Materials
Drafting Committee
D09.01 - Electrical Insulating Products
Current Stage
Ref Project

Relations

Replaces
ASTM F677-95(1999) - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications
Effective Date
01-Mar-2004
Replaced By
ASTM F677-04(2009) - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications
Effective Date
01-Oct-2009

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ASTM F677-04 - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic ApplicationsASTM F677-04 - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications
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ASTM F677-04 - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation:F677–04
Standard Test Method for
Fluid and Grease Resistance of Thermoset Encapsulating
Compounds Used in Electronic and Microelectronic
1
Applications
ThisstandardisissuedunderthefixeddesignationF677;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 For the definitions of terms used in this standard, refer
to Terminology D1711.
1.1 This test method determines the resistance of encapsu-
lating compounds to fluids or greases by measuring changes in
4. Summary of Test Method
weight (Note 1) and volume under defined conditions of time
4.1 Specimens of encapsulating compound are immersed in
and temperature.
fluids or greases for specified conditions of temperature and
NOTE 1—To provide consistency with the usage in other ASTM test
time. The weight and volume of each specimen is measured
methods concerned with determining the properties of plastic materials,
before and after immersion and percent change is reported.
the terms “weight” and “weigh” are used in this test method although the
4.2 The fluids and greases to be used as test media (8.3) are
units of measurement are those of mass.
not specified by the test method and shall be agreed to by the
1.2 This standard does not purport to address all of the
parties to the test.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
5.1 Fluids and greases in contact with encapsulating com-
bility of regulatory limitations prior to use. See 9.1.
pounds may adversely modify the encapsulant properties with
1.3 The values stated in SI units are standard. The values in
resulting damage or loss of protection to components in
parentheses are for information only.
electronic applications.
5.2 This test method provides a means for measuring the
NOTE 2—There is no similar or equivalent IEC standard.
effect of fluids and greases on various encapsulants.
2. Referenced Documents
5.3 This test method is intended for use in research and
2
evaluation.
2.1 ASTM Standards:
D1193 Specification for Reagent Water
6. Interferences
D1711 Terminology Relating to Electrical Insulation
6.1 Test results obtained with molded or cast specimens of
D5423 Specification for Forced-Convection Laboratory
filled encapsulating compounds will differ from those obtained
Ovens for Evaluation of Electrical Insulation
with cut or machined specimens (because of exposed fillers in
D6054 Practice for Conditioning Electrical Insulating Ma-
the latter).
terials for Testing
6.2 Lack of complete contact between the test medium and
3. Terminology
the surfaces of the specimen may seriously affect the results of
the test.
3.1 Definitions:
6.3 Some encapsulants may be affected by the reagents
specified for use in removing the test media from the speci-
1
This test method is under the jurisdiction of ASTM Committee D09 on
mens.Alternative reagents may be required, as agreed upon by
Electrical and Electronic Insulating Materials and is the direct responsibility of
the parties to the test.
Subcommittee D09.01 on Electrical Insulating Varnishes, Powders, and Encapsu-
lating Compounds.
Current edition approved March 1, 2004. Published March 2004. Originally 7. Apparatus
approved in 1980. Discontinued 1991 and reinstated as F677 – 95. Last previous
7.1 Analytical Balance, capable of determining weight to
edition approved in 1999 as F677 – 95(1999). DOI: 10.1520/F0677-04.
2
the nearest 0.001 g.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.2 Oven, forced-convection type meeting the requirements
Standards volume information, refer to the standard’s Document Summary page on
of Specification D5423, Type I.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
F677–04
7.3 Glass Dishes, of sufficient diameter for specimens to be exposed surfaces of the specimens and insert coated specimens
exposed horizontally, and of sufficient height for specimens to into the dish to form a sandwich structure of alternating grease
becompletelycoveredbythetestmedium.Aloose-fittingglass
and specimen layers.
cover shall be provided for each dish (see 13.3).
13.3 Covertheassembledtestspecimenswithaloose-fitting
glass cover and expose the assembled test specimens in an
8. Reagents and Materials
ovenat71 63°C(160 65.4°F)forat
...

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