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1、 EIA STANDARD TP-111 TEST PROCEDURE FOR DETERMINING THE TOTAL IONIC CONTAMINATION OF AN ELECTRICAL CONNECTOR OR SOCKET ASSEMBLY OR COMPONENT EIA-364-111 DECEMBER 2008 ANSI/EIA-364-111-2008 Approved: December 11, 2008 EIA-364-111 EIA Standards Electronic Components Association Copyright Electronic Co
2、mponents, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:22:05 MSTNo reproduction or networking permitted without license from IHS -,-,- NOTICE EIA Engineering Standards and Publications are designed to serve the
3、public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards a
4、nd Publications shall not in any respect preclude any member or nonmember of EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than EIA members, whether
5、the standard is to be used either domestically or internationally. Standards and Publications are adopted by EIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, EIA does not assume any liability to any patent owner, nor does it assume any obligation
6、 whatever to parties adopting the Standard or Publication. This EIA Standard is considered to have International Standardization implication, but the International Electrotechnical Commission activity has not progressed to the point where a valid comparison between the EIA Standard and the IEC docum
7、ent can be made. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulator
8、y limitations before its use. (From Standards Proposal No. 5164 formulated under the cognizance of the CE-2.0 National Connectors Standards Committee). Published by: ELECTRONIC COMPONENTS ASSOCIATION 2008 EIA Standards and Technology Department 2500 Wilson Boulevard Suite 310 Arlington, VA 22201 PRI
9、CE: Please call: Global Engineering Documents, USA and Canada (1-800-854-7179) http:/ All rights reserved Printed in U.S.A. Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:22:05 MST
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11、ement. For information, contact: Global Engineering Documents 15 Inverness Way East Englewood, CO 80112-5704 or call USA and Canada (1-800-854-7179), International (303-397-7956) Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=Boein
12、g Co/5910770001 Not for Resale, 01/31/2009 04:22:05 MSTNo reproduction or networking permitted without license from IHS -,-,- Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:22:05 M
13、STNo reproduction or networking permitted without license from IHS -,-,- CONTENTS Clause Page 1 Introduction . 1 1.1 Scope . 1 1.2 Object 1 1.3 Definition 1 2 Test resources 2 2.1 Equipment . 2 2.2 Material . 3 3 Test specimen 3 3.1 Description 3 3.2 Preparation 4 4. Test procedure . 4 4.1 Method A,
14、 Ionography 4 4.2 Method B, Ion chromatography 6 5 Details to be specified . 9 6 Test documentation . 10 Table 1 Common ions of interest . 9 i Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=Boeing Co/5910770001 Not for Resale, 01/3
15、1/2009 04:22:05 MSTNo reproduction or networking permitted without license from IHS -,-,- (This page left blank) ii Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:22:05 MSTNo repro
16、duction or networking permitted without license from IHS -,-,- EIA-364-111 Page 1 TEST PROCEDURE No. 111 TEST PROCEDURE FOR DETERMINING IONIC CONTAMINATION OF AN ELECTRICAL CONNECTOR OR SOCKET ASSEMBLY OR COMPONENT (From EIA Standards Proposal No. 5164, formulated under the cognizance of EIA CE-2.0
17、Committee on National Connector Standards) 1 Introduction 1.1 Scope This standard establishes 2 methods for determining the total amount of extractable ionic contamination on the surface of an electrical connector or socket assembly or component. 1.1.1 Method A, Ionography A test method for quantify
18、ing the extractable ionic contamination on the surface of an electrical connector or socket assembly or component using an ionograph contamination measurement system as determined in sodium chloride (NaCl) equivalents. 1.1.2 Method B, Ion chromatography A test method for quantifying and identifying
19、the extractable ionic species on the surface of an electrical connector or socket assembly or component using an ion chromatograph system. Ion chromatography results are reported as parts per million as ionic species. 1.2 Object The object of this test procedure is to determine the amount of ionic c
20、ontamination that may be present on the surface of a connector or socket assembly or component (either plastic or metallic). The source of the contamination may be in the materials of construction or in residues from manufacturing processes. If excessive, the reliability of electronic equipment util
21、izing the connector or socket may be compromised. 1.3 Definitions 1.3.1 Total ionic contamination Soluble ionic species such as inorganic salts or weak organic acids 1.3.2 Connector or socket assembly Functional part consisting of conjoined components. Copyright Electronic Components, Assemblies & M
22、aterials Association Provided by IHS under license with ECA Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:22:05 MSTNo reproduction or networking permitted without license from IHS -,-,- EIA-364-111 Page 2 1.3.3 Connector or socket component Individual piece of an assembly such as a hou
23、sing, a contact, a shield, a guide pin, a retention device, or other miscellaneous hardware. 1.3.4 Baseline Line where the test starts 1.3.5 NaCl equivalents Units of concentration of a species reported based on the equivalent weight of NaCl 1.3.6 Eluent The solvent used to carry the extracted ions
24、through the ion exchange chromatograph 1.3.7 Diluent Solvent used for dilutions 1.3.8 Column Analytical exchanger used in ion chromatography to separate ionic species 2 Test resources 2.1 Equipment The following equipment is required: 2.1.1 Method A, Ionography 2.1.1.1 Ionograph contamination measur
25、ement system with a temperature compensated conductivity sensor capable of measuring 0.2 g/ml of NaCl 2.1.1.2 Analytical balance (with a resolution of 0.5 milligrams) 2.1.1.3 Miscellaneous glass or plastic ware 2.1.1.4 Clean gloves or forceps 2.1.1.5 Hydrometer suitable of measuring a specific gravi
26、ty of 0.855 0.0005 2.1.1.6 Micropipettes or Class A pipettes, capable of measuring 1 and 5 milliliters class A 1 liter volumetric flasks Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009
27、 04:22:05 MSTNo reproduction or networking permitted without license from IHS -,-,- EIA-364-111 Page 3 2.1.2 Method B, Ion chromatography A person with experience in ion chromatography should perform this procedure. 2.1.2.1 Ion chromatograph (IC) 2.1.2.2 Analytical columns (capable of resolving ions
28、 of interest) 2.1.2.3 Analytical balance (capable of milligram measurement) 2.1.2.4 Miscellaneous clean glass or plastic ware 2.1.2.5 Clean gloves or forceps 2.1.2.6 Unused, sealable, plastic bags capable of temperatures of 80 C 5 C 2.1.2.7 Water bath (capable of maintaining a constant temperature o
29、f 80 C 5 C) 2.2 Material 2.2.1 Method A, Ionography 2.2.1.1 Isopropanol, reagent grade (IPA) 2.2.1.2 Deionized water (DI water) 2.2.1.3 Sodium chloride (NaCl), reagent grade, 750 micrograms per liter (ppm) recommended 2.2.2 Method B, Ion chromatography 2.2.2.1 Aqueous buffer solutions recommended fo
30、r each column used for ionic separation 2.2.2.2 Certified standards for ions to be tested 2.2.2.3 Isopropanol, reagent grade (IPA) 2.2.2.4 Deionized water (DI water) 3 Test specimen 3.1 Description Connector or socket assembly or component Copyright Electronic Components, Assemblies & Materials Asso
31、ciation Provided by IHS under license with ECA Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:22:05 MSTNo reproduction or networking permitted without license from IHS -,-,- EIA-364-111 Page 4 3.2 Preparation CAUTION Use clean gloves or forceps when handling test specimens and clean gla
32、ss or plastic ware to contain solutions. 4 Test procedure 4.1 Method A, Ionography Set-up the ionograph following the manufacturers recommendations. 4.1.1 Calibration 4.1.1.1 Prepare or buy the extraction solution of 75% / 25% 2% volume / volume isopropanol to DI water. Add the solution to the test
33、chamber. 4.1.1.2 The concentration of this solution shall be maintained by checking its density using a hydrometer and making any necessary adjustment to the concentration. The density shall be 0.872 0.838 4.1.1.3 Test Set-up Verification/Calibration 4.1.1.4 Prepare or buy a 750 ppm NaCl standard to
34、 use as a calibration solution. 4.1.1.5 Calibration Solution Preparation 4.1.1.6 Dry a minimum of 2 grams of NaCl at 110 C 5 C for a minimum of 2 hours. 4.1.1.7 Place in desiccator until cooled to room temperature. 4.1.1.8 Weigh 0.750 0.0005 grams of the dried NaCl. 4.1.1.9 Add the salt to a one-lit
35、er class A volumetric flask and dilute with DI water to the line. 4.1.1.10 After the salt is completely dissolved pipette one milliliter (0.006 milliliters determined from class A glassware) of the solution into a second clean one-liter class A volumetric flask and dilute with DI water to the line.
36、4.1.1.11 Single Point Verification/ Calibration 4.1.1.12 Conduct a single point verification using the calibration solution (at 20 C to 30 C) prior to running test specimens and record the expected and measured values in /ml. Verifications shall be performed daily. If the result deviates more than 5
37、% from the expected value, an instrument calibration shall be performed following the steps above. Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:22:05 MSTNo reproduction or networ
38、king permitted without license from IHS -,-,- EIA-364-111 Page 5 4.1.2 Test specimen preparation and testing Note Maintain the extraction solution during analysis and calibration at a temperature between 20 C and 30 C. 4.1.2.1 Use clean gloves or forceps when handling test specimens. Handling the sp
39、ecimens with bare hands can contaminate the specimens and influence the results. 4.1.2.2 To determine the total specimen surface area, multiply the area of one test specimen in square centimeters by the number of specimens tested in the analysis. As it may be difficult to determine the true surface
40、area of intricate connectors or sockets, this information may be best derived from a computer model of the specimen. 4.1.2.3 Enter the total specimen surface area into the ionograph. 4.1.2.4 Determine the baseline resistivity of the extraction solution in the ionograph 4.1.2.5 Measure and record the
41、 extraction solution temperature 4.1.2.6 Immerse the test specimen(s) in the extraction solution and initiate the analysis. 4.1.2.7 The ionograph will measure the resistivity of the solution during the analysis. The analysis shall be terminated when the resistivity drops below 25% of the baseline an
42、d any of the following test termination options are met: 4.1.2.8 The resistivity of the solution has returned to the baseline. 4.1.2.9 The resistivity of the solution has returned to within 75% of the baseline and the absolute value of the resistivity rate of change is 3% / minute 4.1.2.10 The time
43、of the analysis reaches a minimum of 6 minutes 4.1.2.11 If the resistivity of the solution does not drop below 25% of the baseline during the test, then there is insufficient contamination on the specimens to obtain a valid reading. Repeat the test with new specimens and a larger sample size. If rep
44、eating the test using a larger sample size does not rectify the problem, it may not be possible to assess the ionic contamination of the specimen using this technique. 4.1.3 Calculation 4.1.3.1 The ionograph will calculate the results in total micrograms of NaCl equivalent per square centimeter usin
45、g the resistivity of the solution integrated over the analysis period and normalized using the surface area entered into the instrument at the start of the test. 4.1.3.2 Record results. Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA License
46、e=Boeing Co/5910770001 Not for Resale, 01/31/2009 04:22:05 MSTNo reproduction or networking permitted without license from IHS -,-,- EIA-364-111 Page 6 4.2 Method B, Ion chromatography A person with experience in ion chromatography should perform this procedure. 4.2.1 Test specimen preparation and t
47、esting All container and specimen handling equipment shall be cleaned in a manner consistent with good laboratory practices. 4.2.1.1 Measure the surface area of a test specimen in square centimeters and multiply it by the number of specimens to be tested. 4.2.1.2 Record the total surface area 4.2.1.
48、3 Heat the temperature of the water bath to 80 C 0.5 C and equilibrate for at least 1 hour. 4.2.1.4 Prepare an extraction solution of 75% / 25% 2% volume / volume isopropanol to DI water. 4.2.1.5 Place the test specimen(s) into a bag. 4.2.1.6 Using a pipette, put enough extraction solution into the bag to just cover the test specim