1、. - t .I o W O (u IrJ I W a a a - I EIA 520EAAC 90 323qbOO 0073573 5 ANSI/ EIA- 52 OEAAC-1990 APPROVED: August 24, 1990 EIA SPECIFICATION Detail Specification for Dual In-Line Switches of Certified Quality EIA-520EAAC NOVEMBER 1990 ELECTRONIC IN DUSTRI ES ASSOCIATION ENGINEERING DEPARTMENT Amroved k
2、or Use In the NECQ Svstern EIA 520EAAC 90 D 3234600 0073574 7 NOTICE EIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assis
3、ting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any respect preclude any member or non- member of EIA from manufacturing or selling products not conforming to such Standards and Pub
4、lications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than EIA members, whether the standard is to be used either domestically or internationally. Recommended Standards and Publications are adopted by ELA without regard to whether their ado
5、ption may involve patents on articles, materials, or processes. By such action, EL4 does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Recommended Standard or Publication. This EIA Specification is considered to have International St
6、andardization implication, but the International Electrotechnical Commission activity has not progressed to the point where a valid comparison between the EIA Specification and the IEC document can be made. This Specification does not purport to address all safety problems associated with its use or
7、 all applicable regulatory requirements. It is the responsibility of the user of this Specification to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 2287 formulated under cognizance of the E
8、IA P-13.4 Subcommittee on Dip and Miscellaneous Switches) Published by ELECTRONIC INDUSTRIES ASSOCIATION Engineering Department 2001 Pennsylvania Avenue N.W. Washington, D.C. 20006 PRICE: Please refer to the current Catalog of EIA 010 ; O11 012 1 2 31 4 56 7 8 9 10 11 12 ; -A Raised I EIA-520EAAC Pa
9、ge 2 2.5.2 Part Number: Switches shall be identified as follows: ELA XXXXXXX - XXX Type number from Table IV This Detail Specification number TABLE IV , ISWITCH TYPE I 3.0 SECTION THREE - QUALITY ASSESSMENT PROCEDURES 3.1 The quality assessment procedures are prescribed in Section Three or Sectional
10、 Specification EIA 520E000, and are supplemented by the following information: 3.1.1 Qualification Inspection Tests: I The qualification tests are prescribed in Table I hereir. for the qualification of the entire subfamily of switches covered by this Detail specification. Qualification switches must
11、 have 8 poles. 3.4.6 Lot-By-Lot Inspection Tests: The lot-by-lot inspection tests are prescribed in Table II herein. 3.4.7 Periodic Inspection Tests: The periodic inspection tests are prescribed in Table III herein. 4.0 SECTION FOUR - TEST METHODS AND REQUIREMENTS 4.1 General I The test methods and
12、requirements are prescribed in Section Four of Generic Specification EIA 5200000, Section Four of Sectionai Specification EIA 520E000, and are supplemented by the following information: 4.1.6 Switches with tape top seals shall be supplied with contacts in the closed position and seals in place for G
13、roup A, the solderability test of Group B, and the machine soldering test of Group C of Qualification Test Table I. These seals may be removed for all other qualification tests. Insulation resistance and voltage proof measurement in Group A only will be made between adjacent poles (the closed circui
14、t prevents taking these readings across open contacts). 6 . , EIA 520EAAC 90 3234600 0073578 4 = EU-5 2 OWC Page 3 4.5.1 o 4.5.2. 4.6.1 4.8.1 4.9.1 4.11.1 4.19 4.24 Switch Resistance Contact resistance is to be measured between the two terminals associated with each switch pole, and shall not exceed
15、 50 milliohms initially and in Qualification Groups A and C, and 100 milliohms in Qualification Groups B, D, E and Periodic Test Group B. Insulation Resistance Insulation resistance shall be measured at 100 2 5 Vdc, and at stan- dard atmospheric conditions. Insulation resistance shall not be less th
16、an 1000 megohms. Voltage Proof Voltage proof measurements shall be made with an applied voltage of 500 Vac (rms). Maximum allowable leakage current is 500 microamperes. The switch shall withstand the test voltage without sustained arcing, breakdown, or damage to insulation. Vibration Vibration testi
17、ng shall be in accordance with EIA 186-8 Type III. Strength of Terminations Strength of terminations shall be tested in accordance with EIA-186-6 - with a 1.1 pound load on a minimum of three randomly selected terminals on each specimen. Electrical Endurance The electrical endurance test shall be ru
18、n with one-half of the specimens tested in accordance with Test 8-4 (logic load) and one-half of the specimens tested in accordance with Test 8-5 (low level load). The number of cycles shall be 2000, anti no sticks or misses are allowed. Cap ac it an ce The maximum allowable capacitance shall be 5 p
19、icofarads. Machine Soldering The machine soldering test shall be run in accordance with EIA-448-2 Method 16 and with Method A fluxing (touching body), a soldering time of no less than four seconds, and cleaning by immersion and spray (all four solutions in each case). After the test, there shall be
20、good solder connections, no externally visible indication of leakage, contact resistance shall be in accordance with 4.5.1, and insulation resistance shall be in accordance with 4.5.2, and all marking shall be readable. EIA 520EAAC 90 3234600 0073579 b 9 EIA-520WC Page 4 TABLE I: QUALIFICATION APPRO
21、VAL INSPECTION TESTS Test Method & Group Group A Visual Examination Dimens ions Mass Switch Resistance Insulation Resistance Voltage Proof Group B Solderability Strength of Terminations Electrical Endurance Switch Resistance Voltage Proof Group C Machine Soldering Visual Examination Switch Resistanc
22、e Insulation Resistance Group D Thermal Shock Vibration Visual Examination Shock Visual Examination Switch Resistance Voltage Proof Group D Capacitance Moisture Resistance Switch Resistance Voltage Proof Test No. 1-1 1-2 1-4 2- 1 2-5 3- 1 11-1 See 4.9 See 4.11.1 2- 1 3- 1 See 4.24 1-1 2- 1 2-5 10-2
23、5- 3 1-1 5- 2 1-1 2- 1 3- 1 17-1 10-1 2- 1 3- 1 M/WS M M M M M M M - M M M M M M M M M M M M M M M M M M M M M M M M - D/ND ND ND ND hT ND ND D D D ND ND I) ND ND ND D D ND D ND ND ND ND D ND ND t.S. - Al 1 (1) (1) All Al 1 All 10 24 10 10 - t.d g.d O O O O O O O 1 1 1 1 1 1 1 1 1 1 1 O O EIA 520EAA
24、C 90 E 3234600 0073580 2 E Test Method & Group a Group A (Lot-By Lot) Visual Examination Major Minor Switch Resistance Insulation Resistance Voltage Proof TABLE II: LOT-BY-LOT INSPECTION TESTS Test Method & Group Assessment Level C - IL A94 Test No. D/ND 1- 1 ND 2- 1 ND 11 1% 2-5 ND 3- 1 ND Table II
25、I: PERIODIC INSPECTION TESTS Test No. - D/ND t.s. Group C (every 36 months) Requalification EU-5 2 OEAAC Page 5 Group B (every 12 months) 20 Solderability 11-1 D Strength of Terminations See 4.9 D Electrical Endurance See 4.11.1 D Switch Resistance 2- 1 ND Voltage Proof 3- 1 ND KEY : M= D= ND = t.s.
26、 = t.d. = g.d. = NOTES : t.d. g.d. - 1 mandatory test destructive test nondestructive test minimum quantity of test specimens maximum permissible number defective units per test maximum permissible number of defective units per group , A minimum of 2 pieces of each configuration covered by the Detai
27、l Specification. - _ _ . . -. EIA 520EAAC 90 m 3234600 0073583 4 , J. .- t EIA STANDARD AND SPECIFICATION NUMBERING STANDARD A document that establishes engineering and technical requirements for processes, procedures, practices and methods that have been decreed by authority or adopted by consensus
28、. Standards may also be established for selection, application and design criteria for material. Standards and other documents not in the specification format use only the EIA basic numbering system as follows: EIA-123 Original Standard EIA-123-1 Addendum to Original Standard EIA-123-A First Revisio
29、n of original Standard incorporating all Addenda . SPECIFICATION A document prepared specifically to facilitate procurement which clearly and accurately describes the essential technical requirements for purchased material. Procedures necessary to determine that the requirements for the purchased ma
30、terial covered by the specification have been met shall also be referenced or included. EIA Specifications use the following system: EIA 1 2 3 A A A A- I ITT- Standard Prefix for all Numbers Standard or Generic Specification Sectional Specification Designator Blank Detail Specification Designator De
31、tail Specification Designator EIA I230000 EIA 123AOOO EIA 123AAOO EIA 123W EIA 123OOAA is a Generic Specification is a Sectional Specification is a Blank Detail Specification is a Detail Specification is a Detail Specification for which no Sectional or Blank Detail Specification was issued. NOTES: I. Some Ider specifications may not have been converted to this numbering system. 2. See EP-1 I “Guide for the Preparation of Specification Using IECQ-System Format,“ for more detail.
