ECA EIA-364-14B-1999 TP-14B Ozone Exposure Test Procedure for Electrical Connectors.pdf

1、 EIA STANDARD TP-14B Ozone Exposure Test Procedure For Electrical Connectors EIA-364-14B (Revision of EIA-364-14A) April 1999 ELECTRONIC COMPONENTS, ASSEMBLIES & MATERIALS ASSOCIATION THE ELECTRONIC COMPONENTS SECTOR OF THE ELECTRONIC INDUSTRIES ALLIANCE ANSI/EIA-364-14B-1999 (R2012)Approved: April

2、7, 1999Reaffirmed:April 16, 2012 EIA-364-14BNOTICEEIA Engineering Standards and Publications are designed to serve the public interest througheliminating misunderstandings between manufacturers and purchasers, facilitatinginterchangeability and improvement of products, and assisting the purchaser in

3、 selecting andobtaining with minimum delay the proper product for his particular need. Existence of suchStandards and Publications shall not in any respect preclude any member or nonmember of EIAfrom manufacturing or selling products not conforming to such Standards and Publications, norshall the ex

4、istence of such Standards and Publications preclude their voluntary use by those otherthan EIA members, whether the standard is to be used either domestically or internationally.Standards and Publications are adopted by EIA in accordance with the American NationalStandards Institute (ANSI) patent po

5、licy. By such action, EIA does not assume any liability toany patent owner, nor does it assume any obligation whatever to parties adopting the Standard orPublication.This EIA Standard is considered to have International Standardization implication, but theInternational Electrotechnical Commission ac

6、tivity has not progressed to the point where a validcomparison between the EIA Standard and the IEC document can be made.This Standard does not purport to address all safety problems associated with its use or allapplicable regulatory requirements. It is the responsibility of the user of this Standa

7、rd to establishappropriate safety and health practices and to determine the applicability of regulatory limitationsbefore its use.(From Standards Proposal No. 4305, formulated under the cognizance of the CE-2.0 NationalConnector Standards Committee. Reaffirmation Project 5226.03)Published byELECTRON

8、IC INDUSTRIES ALLIANCE 1999Engineering Department2500 Wilson BoulevardArlington, VA 22201PRICE: Please refer to the currentCatalog of EIA Standards and Engineering Publicationsor call IHS, USA and Canada (1-800-854-7179)International (303-397-7956)All rights reservedPrinted in U.S.A.PLEASE!DON”T VIO

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10、 and Canada 1-800-854-7179, International (303) 397-7956iCONTENTSClause Page1 Introduction 11.1 Scope . 12 Test resources 12.1 Equipment 12.1.1 Test chamber 12.1.2 Ozone generator . 22.1.3 Ozone measuring device . 23 Test specimen . 33.1 Description . 33.2 Preparation . 34 Test procedure 34.1 Condit

11、ions 34.2 Failures . 35 Details to be specified . 46 Test documentation 4ii(This page left blank)EIA-364-14BPage 1TEST PROCEDURE No. 14BOZONE EXPOSURE TEST PROCEDUREFORELECTRICAL CONNECTORS(From EIA Standards Proposal No. 4305, formulated under the cognizance EIA CE-2.0Committee on National Connecto

12、r Standards, and previously published in EIA-RS-364-14A.)1 Introduction1.1 ScopeThis standard establishes a test method to assess the ability of connectors to withstand the effectsof controlled amounts of ozone and still maintain effective environmental protection.CAUTION Since ozone is a toxic gas,

13、 care shall be exercised when using it to performthe testing called out herein.2 Test resources2.1 EquipmentThe test equipment shall be as follows and in accordance with ASTM-D-1149-64.2.1.1 Test chamberThe ozone test chamber shall conform to the following requirements:2.1.1.1 The test chamber shall

14、 be constructed of a material with minimal reaction to ozone.2.1.1.2 The minimum chamber volume shall be 0.14 cubic meter (5 cubic feet).A means for generating and controlling an air-ozone stream shall be provided. The generatingsource shall be located outside the chamber. The air can be drawn eithe

15、r directly from thelaboratory or from a compressed air supply. In either case, adequate filtration of foreign matterfrom the stream shall be provided. If the ozone generating source is a silent arc discharge, the airsupplied to the ozone generator shall be pre-dried to -51 C (-60 F) dew point or low

16、er toprevent the production of nitric acid. The air-ozone stream shall be introduced into the chamberin such a manner that stratification of ozone is prevented.EIA-364-14BPage 22.1.1.3 The air-ozone replacement rate or throughput rate shall be of a magnitude such that noappreciable reduction in ozon

17、e concentration results from the introduction of test specimens. Thisminimum replacement rate will vary with the ozone concentration, temperature, number of testspecimens introduced, and their reaction with ozone. In chambers possessing control or thereplacement rate at the location of the test spec

18、imen, no minimum air-ozone rate need to bedefined. For many chambers operating under normal conditions (approximately 100 ppm to150 ppm (part per million) and with the ozonated replacement rate of a three-fourth change perminute is an acceptable minimum rate. For thorough and accurate work especiall

19、y under unusualconditions, the minimum or safe replacement rate should be determined.2.1.1.4 A means of providing adequate internal circulation shall be provided. The air-ozonevelocity in the chamber shall be at least 0.6 meter per second (2 feet per second).NOTE Where it is not possible to obtain s

20、uch velocities, t he installation of a 1700 rpmelectric motor and fan blade of approximately 15 cm (6 in) diameter and 20 to30 degree pitch will produce such air velocities. The motor itself shall be usedwith an appropriate seal.2.1.1.5 A means of controlling the temperature of the chamber from ambi

21、ent to 70 C 5 C(158 F 9 F) shall be provided. The temperature regulations shall be capable of maintaining thetest temperatures.2.1.1.6 A glass window or glass front door shall be provided with the chamber for visualinspection.2.1.1.7 Chamber exhaust air, containing ozone, shall be vented out of the

22、test area.2.1.2 Ozone generatorMercury vapor lamps, open mercury arc lamps, or silent arc discharge type generators may beused as the source for generating ozone. The ozone concentration can be controlled by means ofa variable transformer on the input to the generators.2.1.3 Ozone measuring devicesO

23、zone measuring devices shall be capable of measuring the concentration within a tolerance ofplus or minus 3%.EIA-364-14BPage 33 Test specimen3.1 DescriptionA test specimen shall consist of one mated and wired plug and receptacle, unless otherwisespecified in the referencing document.3.2 PreparationA

24、ll contacts shall be wired and connectors shall be mated and suspended in an ozone chamber toallow exposure to ozone concentration.4 Test procedure4.1 ConditionsUnless otherwise specified, each test specimen and test equipment shall be stabilized at standardambient conditions. Unless otherwise speci

25、fied, each test specimen shall then be subjected to anozone concentration of 100 ppm to 150 ppm by volume for 2 hours.4.2 FailuresPotential modes of failure resulting from this test are as follows:4.2.1 Loosening or breaking of parts.4.2.2 Degradation of elastomers.4.2.3 Insert bonding failure.4.2.4

26、 Excessive swelling of resilient materials.4.2.5 Damage to interface seals.EIA-364-14BPage 45 Details to be specifiedThe following details shall be specified in the referencing document:5.1 The number of specimens to be tested5.2 The ozone concentration and time if other than specified herein5.3 Acc

27、eptance criteria after ozone exposure5.4 Test conditions if other than specified in clause 45.5 Mating conditions if other than specified in 3.16 DocumentationDocumentation shall contain the details specified in clause 5, with any exceptions, and thefollowing:6.1 Title of test6.2 Specimen descriptio

28、n including fixturing, if applicable6.3 Test equipment used, and date of last and next calibration6.4 Test procedure6.5 Values and observations6.5.1 Record ozone concentrations6.5.2 Visual and mechanical observations6.6 Name of operator and date of testEIA Document Improvement ProposalIf in the revi

29、ew or use of this document, a potential change is made evident for safety, health or technicalreasons, please fill in the appropriate information below and mail or FAX to:Electronic Components Industry AssociationEngineering Department Publications Office4212 Rock Hill Road, Suite 170Herndon, VA 201

30、70-4212Phone: (571) 323-0294Document No. Document Title:Submitters Name: Telephone No.:FAX No.:e-mail:Address:Urgency of Change:Immediate: At next revision:Problem Area:a. Clause Number and/or Drawing:b. Recommended Changes:c. Reason/Rationale for Recommendation:Additional Remarks:Signature: Date:FOR EIA USE ONLYResponsible Committee:Chairman:Date comments forwarded to Committee Chairman: