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ASTM F677-04(2009)

(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 1) and volume under defined conditions of time and temperature.
Note 1—To 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
30-Sep-2009
ICS
31.020 - Electronic components in general
Technical Committee
D09 - Electrical and Electronic Insulating Materials
Drafting Committee
D09.01 - Electrical Insulating Products
Current Stage
Ref Project

Relations

Replaces
ASTM F677-04 - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications
Effective Date
01-Oct-2009
Replaced By
ASTM F677-13 - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic Applications (Withdrawn 2013)
Effective Date
01-Apr-2013

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ASTM F677-04(2009) - Standard Test Method for Fluid and Grease Resistance of Thermoset Encapsulating Compounds Used in Electronic and Microelectronic ApplicationsASTM F677-04(2009) - 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(2009) - 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
Designation: F677 − 04(Reapproved 2009) An American National Standard
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
and temperature.
4.1 Specimens of encapsulating compound are immersed in
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,
the terms “weight” and “weigh” are used in this test method although the before and after immersion and percent change is reported.
units of measurement are those of mass.
4.2 The fluids and greases to be used as test media (8.3) are
1.2 The values stated in SI units are standard. The values in
not specified by the test method and shall be agreed to by the
parentheses are for information only.
parties to the test.
NOTE 2—There is no similar or equivalent IEC standard.
5. Significance and Use
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5.1 Fluids and greases in contact with encapsulating com-
responsibility of the user of this standard to establish appro-
pounds may adversely modify the encapsulant properties with
priate safety and health practices and determine the applica-
resulting damage or loss of protection to components in
bility of regulatory limitations prior to use. See 9.1.
electronic applications.
5.2 This test method provides a means for measuring the
2. Referenced Documents
effect of fluids and greases on various encapsulants.
2
2.1 ASTM Standards:
5.3 This test method is intended for use in research and
D1193 Specification for Reagent Water
evaluation.
D1711 Terminology Relating to Electrical Insulation
D5423 Specification for Forced-Convection Laboratory Ov-
6. Interferences
ens for Evaluation of Electrical Insulation
D6054 Practice for Conditioning Electrical Insulating Mate- 6.1 Test results obtained with molded or cast specimens of
rials for Testing filled encapsulating compounds will differ from those obtained
with cut or machined specimens (because of exposed fillers in
3. Terminology
the latter).
3.1 Definitions:
6.2 Lack of complete contact between the test medium and
the surfaces of the specimen may seriously affect the results of
the test.
1
This test method is under the jurisdiction of ASTM Committee D09 on
6.3 Some encapsulants may be affected by the reagents
Electrical and Electronic Insulating Materials and is the direct responsibility of
specified for use in removing the test media from the speci-
Subcommittee D09.01 on Electrical Insulating Varnishes, Powders and Encapsulat-
ing Compounds.
mens.Alternative reagents may be required, as agreed upon by
Current edition approved Oct. 1, 2009. Published February 2010. Originally
the parties to the test.
approved in 1980. Last previous edition approved in 2004 as F677 – 04. DOI:
10.1520/F0677-04R09.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 7. Apparatus
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1 Analytical Balance, capable of determining weight to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. the nearest 0.001 g.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F677 − 04 (2009)
7.2 Oven, forced-convection type meeting the requirements fluid. Repeat this procedure to form a sandwich structure of
of Specification D5423, Type I. alternating filter paper and specimen layers.
13.2.2 For grease test media, omit the filter paper if the
7.3 Glass Dishes, of sufficient diameter for specimens to be
viscosity of the grease at the exposure temperature is sufficient
exposed horizontally, and of sufficient height for specimens to
to prevent specimens from touching. Apply grease to all
becompletelycoveredbythetestmedium.Aloose-fittingglass
exposed surfaces of the specimens and insert coated specimens
cover shall be provided for each dish
...

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