EIA ECA-364-91B-2016 TP-91B Dust Test Procedure for Electrical Connectors and Sockets.pdf

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1、EIA STANDARDTP-91BDust Test Procedure for Electrical Connectors and SocketsEIA-364-91B (Revision of EIA-364-91A) August 2016 Electronic Components Industry Association EIA-364-91BANSI/EIA-364-91B-2016 Approved: August 25, 2016 NOTICEEIA Engineering Standards and Publications are designed to serve th

2、e 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

3、 and Publications shall not in any respect preclude any member or nonmember of ECIA 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 ECIA members, whet

4、her the standard is to be used either domestically or internationally. Standards and Publications are adopted by ECIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, ECIA does not assume any liability to any patent owner, nor does it assume any obli

5、gation whatever to parties adopting the Standard or Publication. This EIA Standard is considered to have International Standardization implications, but the International Electrotechnical Commission activity has not progressed to the point where a valid comparison between the EIA Standard and the IE

6、C document 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 re

7、gulatory limitations before its use. (From Standards Proposal No. 5369, formulated under the cognizance of the CE-2.0 Committee on EIA National Connector and Sockets Standards.) Published by Electronic Components Industry Association 2016 EIA Standards & Technology Department 2214 Rock Hill Road, Su

8、ite 265 Herndon, VA 20170PLEASE ! DONT VIOLATE THE LAW!This document is copyrighted by the ECIA and may not be reproduced without permission. Organizations may obtain permission to reproduce a limited number of copies through entering into a license agreement. For information, contact: IHS Markit 15

9、 Inverness Way East Englewood, CO 80112-5704 or call USA and Canada (1-877-413-5186), International (303-397-7956) i CONTENTS Clause Page 1 Introduction . 1 1.1 Scope . 1 2 Test resources 1 2.1 Equipment . 1 2.2 Material . 2 3 Test specimen 2 3.1 Description 2 3.2 Preparation 2 4 Test procedure . 3

10、5 Details to be specified . 3 6 Test documentation . 4 Table A.1 Dust composition #1 (Benign) A-1 A.2 Dust composition #2 (Corrosive) A-2 Annex A Dust composition (normative) A-1 A.1 Benign composition A-1 A.2 Corrosive composition A-2 ii (This page left blank) EIA-364-91B Page 1 TEST PROCEDURE No.

11、91B DUST TEST PROCEDURE FOR ELECTRICAL CONNECTORS AND SOCKETS (From EIA Standards Proposal No. 5369, formulated under the cognizance of the EIA CE-2.0 Committee on National Connector and Socket Standards, and previously published in EIA-364-91A) 1 Introduction 1.1 Scope 1.1.1 This standard establish

12、es a test method to determine the susceptibility of an electrical connector or socket system to the potential degradation mechanism of a dust/fiber environment common to an office or manufacturing area. 1.1.2 This method may be used as a preconditioning test whereby the test specimen is exposed to a

13、 heavy concentration of dust and then exposed to a subsequent environment or as a “stand alone” test. 1.1.3 This test should not be considered as an alternate or replacement for the EIA-364-50 (Sand and Dust Test Procedure for Electrical Connectors and Sockets) that simulates an outdoor desert type

14、environment. CAUTION This procedure may involve hazardous materials, operations and equipment. This procedure does not purport to address all safety problems associated with its use or all regulatory requirements. It is the responsibility of the user of this procedure to establish appropriate safety

15、 and health practices and to determine the applicability of regulatory limitations before its use. 2 Test resources 2.1 Equipment 2.1.1 A dust chamber of sufficient size to allow the test specimens to be placed in the chamber with the clearances as indicated in 4.1. 2.1.2 An air blower system of suf

16、ficient size to maintain a flow rate of 300 meters/minute (1000 feet/minute) 20%, unless otherwise specified in the referencing document. 2.1.3 A dust dispensing system capable of holding the volume of dust required. 2.1.4 A timing circuit may be required for those situations where dust is to be app

17、lied in a time cycle mode. EIA-364-91B Page 2 2.1.5 Unless otherwise specified, the air blower/dust dispensing system shall be capable of blowing the dust in a vertically upward direction from the bottom of the chamber to the top of the chamber. 2.1.6 The chamber attitude shall be such that when the

18、 blower is in an off condition, the dust shall fall by gravity to the bottom of the chamber into a collection area. 2.2 Material 2.2.1 Dust composition Unless otherwise specified in the referencing document, the specified dust composition shall be one of those listed in table A.1 or A.2. The dust co

19、mposition shall not be reused in any subsequent test. 3 Test specimen 3.1 Description The referencing document shall specify if the test specimens are to be exposed mated or unmated. If unmated, it shall be specified if the receptacle, mating device or both is to be exposed. If not specified, only t

20、he connector normally exposed to the environment shall be tested unmated. 3.2 Preparation The test specimens shall be placed in the chamber in such a manner as not to be closer than 76 millimeters (3.0 inch) from the walls of the test chamber and not closer than 76 millimeters (3.0 inches) from the

21、dust entry area. 3.2.1 The specimens shall be held in place using non-reactive materials in a manner allowing unobstructed air flow around said specimens. 3.2.2 If multiple specimens are to be exposed simultaneously, the specimens shall be placed so as not to be closer than 50 millimeters (2.0 inche

22、s) from each other. Multiple specimens shall be spaced side by side in a manner that does not prevent dust accumulation on or in the specimens. 3.2.3 The test specimens shall be exposed in their normal terminated state. 3.2.4 The test specimens shall be placed in the chamber in the orientation repre

23、senting their application and shall be specified in the referencing document. 3.2.5 Prior to exposure, the dust composition to be used shall be placed in a tray or holding container and evenly spread. The dust shall then be placed in an oven and dried at 50 C 3 C for 1.0 hour minimum. EIA-364-91B Pa

24、ge 3 3.2.6 Prior to exposure, the specimens to be tested shall not be cleaned unless the cleaning process is an actual part of the product application process of instructions. 4 Test procedure 4.1 The specimens shall be placed in the chamber in accordance with clause 3, unless otherwise specified in

25、 the referencing document. 4.2 The mass of dust shall be 9 grams 1 gram per cubic foot of chamber volume, unless otherwise specified in the referencing document. 4.3 After specimen placement, the air blower system shall be turned on. 4.4 The exposure duration shall be 1.0 hour +5.0 minutes / -0.0 mi

26、nutes, unless otherwise specified in the referencing document. 4.5 Upon completion of the exposure, the air blower system shall be turned off. The specimens shall not be removed from the chamber for a minimum of 1.0 hour. 4.6 Upon removal from the chamber the specimens may be gently tapped 5 times f

27、or removal by gravity of excess accumulation. The specimens shall not be otherwise cleaned, wiped or have air blown on them. 4.7 After completion of each exposure, the interior of the chamber and dust delivery system shall be cleaned as much as practical. Brushing and vacuuming shall be sufficient.

28、4.8 Subsequent attribute monitoring or exposure to other environments shall, be in accordance with the referencing document. 4.9 This test shall be performed in a chamber at room ambient conditions as follows: Temperature: 25 C 7 C Relative humidity: 70% 5 Details to be specified The following detai

29、ls shall be specified in the referencing document: 5.1 Dust composition #1 or #2, see table A.1 or A.2 5.2 Subsequent tests 5.3 Pass/fail criteria 5.4 Mated or unmated EIA-364-91B Page 4 6 Documentation Documentation shall contain the details specified in clause 5, with any exceptions, and the follo

30、wing: 6.1 Title of test 6.2 Specimen description including orientation, mating and termination conditions 6.3 Test equipment used, and date of last and next calibration 6.4 Test condition 6.4.1 Dust composition 6.4.2 Mass of dust 6.4.3 Duration 6.5 Visual observations and results 6.6 Name of operato

31、r and start/finish date(s) of test EIA-364-91B Page A-1 Annex A Dust composition (normative) The dust compositions contained herein are classified as benign or corrosive. A.1 Benign composition The benign composition should be considered for office environment applications in non-industrial areas or

32、 in filtered areas located in industrial areas. Table A.1 Dust composition #1 (Benign) Particulate Weight % Size (see notes) Chemical nomenclature Silica 36 2 - 7 SiO2Calcite 29 2 7 CaCO3Iron oxide 12 2 4 Fe2O3Alumina 8 2 5 Al2O3Gypsum 5 2 7 CaSO4Paper fibers 3 3 150 (diameter 12) Cotton fibers 1 10

33、-1500 (diameter 13) 1 2540 nom. (diameter 13) 1 6350 nom. (diameter 13) Polyester fibers 1 7-1500 nom. (diameter 22) 1 2540 nom. (diameter 22) 1 6350 nom. (diameter 22) Carbon black 1.0 0.01-0.02 NOTES1 All sizes are in micrometers 2 Paper, cotton and polyester fibers relate to length. All other ele

34、ments are diameters. EIA-364-91B Page A-2 A.2 Corrosive composition The corrosive composition should be considered for corrosive industrial applications both in sheltered and unsheltered atmospheres. Table A.2 Dust composition #2 (Corrosive) Particulate Weight % Chemical Nomenclature Potassium nitra

35、te 1.640 KNO3Potassium chloride 2.250 KC1 Ammonium chloride 4.050 NH4C1 Ammonium nitrate 6.050 NH4NO3Magnesium nitrate hexahydrate 2.400 Mg(NO3)26H2O Magnesium sulfate heptahydrate 34.600 MgSO47H2O Feldspar 18.800 CaOAl2O32SiO2Calcium sulfate 3.080 CaSO4Titanium dioxide 0.299 TiO2Manganese dioxide 0

36、.091 MnO2Ferric oxide 8.550 Fe2O3Cupric oxide 1.420 CuO Zinc oxide 1.130 ZnO Paper fibers 15.68 - NOTE The size of the dust particle shall be of such a size as to pass through a mesh size of 325.ECIA Document Improvement Proposal If in the review or use of this document, a potential change is made e

37、vident for safety, health or technical reasons, please fill in the appropriate information below and mail or FAX to: Electronic Components Industry Association EIA Standards & Technology Department 2214 Rock Hill Rd., Suite 265 Herndon, VA 20170 FAX: (571-323-0245) Document No.: Document Title: Subm

38、itters 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 ECIA USE ONLYResponsible Committee: Chairman:

39、 Date comments forwarded to Committee Chairman: Revision History Revision letter Project number Publication date Additions, changes and deletions- SP-5335 September 1996 Initial publication. A SP-5060 April 2005 B SP-5369 Corrected typo in paragraph 2.1.5 Revised paragraph 4.6 and 6.6 Deleted paragraph 5.2 and renumbered remaining paragraphsElectronic Components Industry Association 2214 Rock Hill Road, Suite 265 * Herndon, VA 20170 * tel 571-323-0294 * fax 571-323-0245 www.ecianow.org