MIL- STD-883F 2004 TEST METHOD STANDARD MICROCIRCUITS - 第686页

MIL-STD-883F METHOD 5011.4 31 October 1995 6 3.6 Respons ib ility for te sting . The manufact urer and us er ar e respons ible f or the per formanc e of all tests as specif ied in table I herein. NOTE: The Gover nment r …

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MIL-STD-883F
METHOD 5011.4
31 October 1995
5
3.5.6 Coefficient of linear thermal expansion
. The coefficient of linear thermal expansion shall be determined from -65°C
to 150°C in accordance with 3.8.9. The coefficient of linear thermal expansion shall be ±10% of the value required in the
users material specification or purchase order. This requirement shall apply to the material as it is configured for actual use.
This requirement shall not apply to glass supported polymeric films.
3.5.7 Thermal conductivity
. The thermal conductivity shall be determined at 121°C ±5°C in accordance with 3.8.10. The
thermal conductivity shall be greater than or equal to 1.5 watt/meter-K for type I polymers and greater than or equal to .15
watt/meter-K for type II polymers.
3.5.8 Volume resistivity
. The volume resistivity shall be determined in accordance with 3.8.11. The volume resistivity of
conductive materials at 25°C, at 60°C, at 150°C, and at 25°C after 1,000 hours at 150°C shall be less than or equal to 5.0
microhm-meter for silver-filled polymers and less than or equal to 15.0 microhm-meter for gold-filled polymers. The volume
resistivity of insulative materials shall be greater than or equal to 0.1 teraohm-meter at 25°C and greater than or equal to 1.0
megohm-meter at 125°C.
3.5.9 Dielectric constant
. The dielectric constant of insulative polymeric materials shall be determined in accordance with
3.8.12 and shall be less than or equal to 6.0 at both 1 kHz and 1 MHz for this type of polymer but shall be less than or equal
to 3.5 at 1 kHz and 1 MHz for materials used for dielectric layers.
3.5.10 Dissipation factor
. The dissipation factor of insulative polymers shall be determined in accordance with 3.8.13 and
shall be less than or equal to 0.03 at 1 kHz and less than or equal to 0.05 at 1 MHz.
3.5.11 Sequential test environment
. The polymeric material shall withstand exposure to the test conditions specified in
3.8.14. After exposure to the complete sequence of environmental conditions, the test specimens shall show no evidence of
mechanical degradation. For adhesives the measured bond strength of components shall meet as a minimum the 1.0X
requirement specified on figure 2019-4 of method 2019 of MIL-STD-883.
3.5.12 Density
. The density of microwave or RF absorbing materials shall be tested in accordance with 3.8.15. The
acceptable value shall be that which is within ±10% of the value required on the user's material specification or purchase
order.
3.5.13 Mechanical integrity
. Particle getter integrity shall be verified after different levels of environmental stress.
3.5.13.1 Getter integrity (short term)
. When tested in accordance with 3.8.16.1 all samples shall pass the criteria for
PIND as defined in MIL-STD-883 method 2020.
3.5.13.2 Getter integrity (long term)
. When tested in accordance with 3.8.16.2 all samples shall pass the criteria for
PIND as defined in MIL-STD-883, method 2020, both initially and after storage at 150°C for 1,000 hours. The salted
particles shall remain attached to the getter material in the original position with no attachment and reattachment when
viewed at 30X to 60X magnification.
3.5.13.3 Getter integrity (vibration)
. When tested in accordance with 3.8.16.3 the sample shall pass PIND as defined in
MIL-STD-883, method 2020, the salted particles shall remain attached to the getter material in the original position, with no
detachment and re-attachment when viewed at 30X to 60X.
3.5.14 Operating life
. When tested in accordance with 3.8.17, the comparison between initial and post test electrical data
shall not indicate parametric shifts, which are unique to the test group containing getter material.
MIL-STD-883F
METHOD 5011.4
31 October 1995
6
3.6 Responsibility for testing. The manufacturer and user are responsible for the performance of all tests as specified in
table I herein.
NOTE: The Government reserves the right to perform any of the inspections set forth in the specification where
such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements.
3.6.1 Test equipment and testing facilities
. Test and measuring equipment and testing facilities of sufficient accuracy,
quality and quantity to permit performance of the required testing shall be established and maintained by the manufacturer
and user. The establishment and maintenance of a calibration system to control the accuracy of the measuring and test
equipment shall be in accordance with ANSI/NCSL Z540-1 or equivalent. The supplier and user may utilize a commercial
laboratory acceptable to the qualifying activity for performing the required certification and acceptance testing.
3.6.2 Testing conditions
. Unless otherwise specified herein, all testing shall be performed in accordance with the test
conditions specified in the "general requirements" of the MIL-STD-883.
3.7 Classification of testing
. The test requirements specified herein are classified as certification testing and acceptance
testing.
3.7.1 Certification testing
. Certification testing shall be performed on the initial lot of material and for any major changes
to the material thereafter and consist of all tests to determine conformance with all requirements specified herein. To insure
that both the polymeric material and the processes employing the material are controlled, both the supplier and the user of
the material shall be responsible for performance of the tests as designated in table I.
3.7.1.1 Sample size
. The number of samples to be subjected to each testing procedure shall be as specified in the
individual test methods.
3.7.1.2 Failures
. Failure of any polymeric material to meet the testing requirements shall be cause for refusal to grant
certification approval.
3.7.1.3 Retention of data
. The data generated for certification shall be retained for a period of 5 years or until a
recertification is performed, whichever is greater.
3.7.2 Acceptance testing
. Acceptance tests shall be performed on each lot and shall consist of tests as specified in
table I.
3.7.2.1 Test lot
. A test lot shall consist of all polymeric material manufactured under the same batch number, i.e., a batch
number identifies those materials whose constituents can be traced to a single lot of raw materials.
3.7.2.2 Sample size
. The number of samples to be subjected to each testing procedure shall be as specified in the
individual test methods.
3.7.2.3 Failures
. Failure of the samples to meet the testing requirements of a specific test shall be cause for rejection of
the lot.
3.7.2.4 Retention of data
. The data generated for acceptance testing shall be retained for a period of 5 years.
3.8 Methods of examination and test
. The following test criteria and analytical protocols shall be documented and
approved by the qualifying activity prior to material certification.
3.8.1 Materials
. The polymeric components or system or both shall be examined visually at a minimum magnification of
30X to ensure conformance with the requirements of 3.4.1.
MIL-STD-883F
METHOD 5011.4
31 October 1995
7
3.8.2 Viscosity
. The material user and supplier shall define a mutually acceptable method for verifying the viscosity of
fluid or paste materials. The supplier shall use the same method in performing the required certification and acceptance
testing.
3.8.3 Pot life
. The parameters to be used in the measurement of pot life (e.g., viscosity change, skin-over, loss of bond
strength, etc.) are generally material dependent. The material supplier and user shall select the procedure to be used in
establishing and testing the pot life.
3.8.4 Shelf life
. Where applicable, an unopened container of material shall be stored under the condition specified in
3.4.4. As a minimum, the test methods and requirements specified in table III shall be used to establish the shelf life.
TABLE III. Shelf Life Determination
.
Property
Requirement Test method Application/condition
Materials 3.4.1 3.8.1 All polymeric materials
Pot life 3.4.3 3.8.3
Adhesives; α Absorbers;
Junction coatings;
Dielectrics
Bond strength 3.5.5 3.8.8
Adhesives; α Absorbers;
Junction coatings;
25°C only
Volume resistivity 1/
3.5.8
3.8.11
Adhesives, type I, 25°C
only
1
/ To be determined for materials where electrical conductivity is a design parameter.
3.8.5 Thermogravimetric analysis (TGA)
. The thermal stability of the polymeric system and it's filler content (if any) shall
be determined by testing samples of the cured system (see 3.5.1) in nitrogen using suitable TGA equipment or in
accordance with ASTM D3850. Single point analyses are acceptable, however if the first sample fails, then two additional
analyses must be performed. The average value of the three samples must then meet or exceed the minimum
requirements.