1、EIA 520AAAB-A 91 = 323L1600 0078240 3 W - I U I ANSI/ EIA- 52 O AAAB- A- 1991 APPROVED: September 19, i991 EIA SPECIFICATION Detail Specification for Nonsensitive Pushbutton Switch Momentary Contact EIA-520AAAB-A (Revision of EIA-BPOAAAB) - OCTOBER 1991 ELECTRONIC INDUSTRIES ASSOCIATION ENGINEERING
2、DEPARTMENT ADDrOVed For Use in the NECQ the latest issue of EIA 520A000, Sectional Specification for Pushbutton Switches of Certified Quality; and the latest issue of EIA 5200000, Generic Specification, Special Use Electromechanical Switches of Certified Quaiity. 1. GENERAL 1.1 SCOPE The family of m
3、omentary contact, non-sensitive pushbutton switches covered by this detail specification: a) mount in a panel hole with a clearance diameter for a 1/4-32UNEF-2A thread. b) have a maximum rated voltage of 115 Vac. c) have a maximum rated current of 250 mA. 1.2 TYPE DESIGNATION Switches covered by thi
4、s detail specification shall be identified as follows and in the order shown: a) the number of this detail specification. b) discrete switch identification per Table IV. EXAMPLE: EIA 520- OlQ Discrete Switch identification per Table IV Number of this detail specification c 7 ELA 520AAAB-A 91 W 32396
5、00 0078295 2 1.3 MARKING EU-520AAAB-A Page 3 The marking of the switch and containing package shall be in accordance with paragraph 2.5 of Generic Specification EIA-5200000. 1.4 ORDERING INFORMATION Orders for switches covered by this specification shall contain the following information as a minimu
6、m: a) the applicable part number per paragraph 1.2. b) when certified records of released lots are required, include “CERTIFIED RECORDS REQUIRED“. 1.5- CERTIFIED RECORD OF RELEASED LOTS - Not Applicable 1.6 SAFETY CONSIDERATIONS The user shail consider the suitability of the switch with regard to an
7、y safety requirements applicable to the end use equipment. 1.7 COMMON FEATURES - See cover page 1.8 DIMENSIONAL PARAMETERS - See Figures 1 thru 6 1.9 RATINGS and CHARACTERISTICS 1.9.1 RATINGS * Altitude - Not Applicable * Electrical - power - 115 Vac, 250 mA * Electrical - logic level - 5 Vdc, 10 mA
8、 * Electrical - low level - 30 mVdc, 10 mA * Flammability - Plastic materials certified per UL94 V2 or better. * Fluid resistance - Not Applicable * Fungus resistance - Not Applicable EIAI520AAAB-A Page 4 * Icing - Not Applicable * Moisture resistance - Applicable * Random vibration - Not Applicable
9、 * Salt spray - Applicable, 48 hours. * Sand and dust - Not Applicable * Sealing - Applicable for sealed switches only. * Shock - Applicable, 100 g, sawtooth, 6 ms Duration (Test Condition H of ELA-448 Method 12). * Temperature - -400 C to 85“ C. * Thermal shock - Applicable, -550 C to 85“ C. * Vibr
10、ation - Applicable, 15 g, 10-2000 Hz 1.92 CHARACTERISTICS * Actuator grounding - Not Applicable * Altitude voltage proof - Not Applicable * Capacitance - 5 pF max. (Note: wire leads of -028 and -029) may be shortened as necessary to obtain accurate reading of switch capacitance. * Contact bounce - N
11、ot Applicable * EMI shielding - Not Applicable * Endurance - See Table IV * End stops - Not Applicable * Immersion in cleaning solvents - Not Applicable * Insulation resistance - 1000 megohms min. at 100 Vdc. * Lamp circuit resistance - Not Applicable a - IEIA SOAAAB-A 91 = 323Vb00 00782V7 b - . EM-
12、520AAAB-A Page 5 O * Low temperature operation - Not Applicable * Mass - See Table IV * Operating characteristics - See operating force and button travel (3) in Table IV. * Overload - Not Applicable * Resistance to soldering heat - Not Applicable * Strength of actuator - 10 lb along switch axis and
13、in same direction as operating force, (F7 of EM-5200000, Test 6-1, Figure la). When applicable, force required to remove button cap shall be 3 lb minimum. applied along switch axis and opposite to operating force. * Strength of mounting bushing 15 lb-in torque * Strength of screw mounting - Not Appl
14、icable * Strength of termination - 5 lb Q) * Solderability - Applicable * Stay light - Not Applicable * Sunlight readability - Not Applicable * Switch resistance - specined current - 25 miiiiohrns dtially, 250 milliohms after test; * Temperature rise - Not Applicable 185 milliohms initially, 425 mil
15、liohms after test for -028 and -029; maximum. * Voltage proof - 1000 Vac 2. INSPECLION REQUIREMEWS 2.1 Qualification Approval inspection requirements shall be in accordance with Table I herein. EIA 520AAAB-A 91 W 3234600 0078248 8 m B EIA/520AAAB-A t Page 6 2.2 Quality Conformance inspection require
16、ments are prescribed in Table II herein for lot- by-lot inspections, and in Table III herein for periodic inspections. For Visual Examination, the classification of major and minor defects shall be as follows: O Major characteristics for visual examination: Proper assembly Proper termination Physica
17、l damage 2.3 Endurance tests shaii be run with the loads and durations shown below. No more than one (1) stick or miss per 1000 cycles is permitted. Test Time B!slaL Load No. Qcle Electrical Endurance 8-1 115 Vac, 250 mA 89See Logic Level Endurance 8-4 5 Vdc, 1OmA Table Low Level Endurance 8-5 30 mV
18、dc, 10 mA IV 2.19 Capacitance APPLICATION NOTE: Long leads of -028 and -029 will influence capacitance measurement, and should be taken into consideration by user. EIA 520AAAB-A 71 m 3234600 O078247 T m EM-520AAAB-A Page 7 FIGURE- i CIRCUIT DIAGRAM PART -001. -002 CIRCUIT DIAGRAM N.0.- N.C.7 C. PART
19、 -005, -006 CINGLE POLE WUBLE THROW MAKE BEFORE BREAK BOTTOW VIEW TYPICAL ff -001 Trn -m. FIGURE 2 CIRCUIT DIAGRAM PART -003, -004 C. !:E: SINGLE WLE CKBlE THnm BREAK BEFORE WE CIRCUIT DIAGRAM N.O.0 PART -007, -008 3 CIRCUIT DIAGRAM PART -009 , -010 N.C. 4N.D. C. - CIRCUIT DIAGRAM PART -01 I, -012 E
20、IA 520AAAB-A 91 W 3234600 O078250 b W Em/520m-A Page 8 , . FIGURE 4 t I1 CIRCUIT DIAGRAH N.C. C. - ihN:O. C. F N.C. kN.0. WUBLE POLE WLE THROW BREAK BEFORE HAKE CIRCUIT DIAGRAM N.0.- 9 i N.O.4 DWBLE POLE DWBLE Twou WAKE BEFORE BREAK PART PART -020, -022 I -02 I -023 BOTTCM VIEW TYPICAL FU? -020 TW -
21、027 FIGURE 5 CIRCUIT DIAGRAM c. 7N:O. - N.C. hN.0. N.C. PART -024, -025 C. Y WLBLE WLE MU& TRIW BREAK BEFORE WE CIRCUIT DIAGRAM *E:= i PART -026, -027 N.0.- AQnsc FLATS OOUBLE Pa -LE THROW fflxAGm. MAKE BEFORE BREAK , EIA 520AAAB-A 9% m 3234b00 0078253 8 m 9 C FIGURE 6 MX. “TINO Nur NOTES, APPLICABL
22、E TO ALL FIGURES! 1. DIMENSIONS ARE DENOTED AS FOLLOWS, 0.0 = MM EIA-520AAAB-A Page 9 CIRCUIT DIAGRAM N.C. C. - N.C. L.N.O. PART -028, -029 EIA/52OAAAB-A Page 10 Test Method & Grow Grom A Visual Examination Dimensions Functional Operation Switch Resistance Voltage Proof Operating Characteristics Cap
23、acitance Solderability Strength of Terminals Strength of Actuator Electrical Endurance Operating Characteristics Switch Resistance Insulation Resistance Voltage Proof Seal Grow C Logic Level Endurance Switch Resistance Operating Characteristics GrouD D Low Level Endurance Switch Resistance Operating
24、 Characteristics Grow E Thermal Shock Vibration Shock Operating Characteristics Switch Resistance Insulation Resistance Voltage Proof Humidity Salt Spray EIA 520AAAB-A 91 = 3234600 0078252 T i TABLE 1 T QUALIFICATION APPROVAL INSPECION TEST Test No. 1-1 1-2 1-5 2-2 3-1 1-6 17-1 11-2 6-4 6-1 See 23 1
25、-6 2-2 2-5 3-1 13-1 See 2.3 2-2 16 See 23 2-1 16 10-2 5-3 5-2 10-1 1-6 2-2 2-5 3-1 10-4 M/WS M M M M M M M M M M M M M M M ws M M M M M M M M M M M M M M M D/ND ND ND ND ND ND ND ND D D D D ND ND ND ND ND D ND ND D ND ND D D D D ND ND ND ND D - t.d 96 U. 25 ea (1) 5 ea. (i) 1 5 ea. (1) 5 ea. (1) 5 e
26、a. (i) 1 5 ea. (1) EIA 520AAAB-A 91 3234600 0078253 1 - L KEY: M = mandatory test WS = when specified test D = destructive test EIA-520AAAB-A Page 11 ND = nondestructive test t.s. = minimum quantity of test specimens t.d. = maximum permissible number of defective units per test g.d. = maximum permis
27、sible number of defective units per group NOTES: (1) = Twenty-five of each switch type requiring qualification shd be used in Group A. Five of each switch type requiring qualification shail be used in Groups B,C,D,E,F. EIA 520AAAB-A 91 E 3234600 O078254 3 W EIA/520AAAB-A Page 12 TABLE4 LOT-BY-LOT IN
28、SPECTION TESTS Test Methods and Test Groups (Test Frequency) Acceptance A (Lot-By-Lot) Group A (Lot-Bv Lot) Visual Examination Major Minor Functional Operation Switch Resistance Periodic Tests Grow B (every 6 months) Assessment Levels Level T“ (3) Test No. D/ND - IL AOL 1-1 ND I 1.5 1-5 2-2 ND II ND
29、 53 Table KI PERIODIC INSPECTI0 N TESTS Dimensions Operating Characteristics Switch Resistance Insulation Resistance Voltage Proof Panel Sealing (when specified) Solderability Grow C (e vem 36 months) Requalification per Table I 1-2 1-6 2-2 2-5 3-1 13-1 11-2 ND ND ND ND ND ND D Level C (3) t.s. (4)
30、t.d Ld 2 2 10 10 10 10 10 (1) 4.0 1.0 1.5 EIA 520AAAB-A 91 3234b00 O078255 5 W z KEY D ND t.s. t.d. g.d. na. NOTES: (1) = (3) = (4) = EM-520AAAB-A Page 13 = destructive test = nondestructive test = = = = minimum number of test samples maximum permissible defective units per test maximum permissible
31、defective units per group test is not applicable if no changes have been made to the design or manufacturing processes. The resilient and hermetic sed tests may be performed as in-process inspections and the acceptance inspection may then be limited to the watertight test for gross leaks. The quanti
32、ty of test specimens shall be the same as required for qualification approval tests. Assessment Level C is the minimum acceptable level. Additional, higher levels can be developed as required for specific Detail Specifications. Number of samples required for each qualified switch type. EIA STANDARD
33、AND SPECIFICATION NUMBERING Standard or Generic Specification Standard Prefix for all Numbers Sectional Specification Designator Blank Detail Specification Designator “T STANDARD P k A document that establishes engineering and technical requirements for processes, procedures, practices and methods t
34、hat have been decreed by authority or adopted by consensus. 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-I 23 Original Standard EI
35、A-123-1 Addendum to Original Standard EIA-123-A First Revision 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 necess
36、ary to determine that the requirements for the purchased material covered by the specification have been met shall also be referenced or included. o i EIA 123oooO EIA 123AOOO EIA 123AAOO EIA 123AAAA EIA 12300AA is a Generic Specification is a Sectional Specification is a Blank Detail Specification i
37、s a Detail Specification is a Detail Specification for which no Sectional or Blank Detail Specification was issued. NOTES: 1. Some older specifications may not have been converted to this numbering system. Format,“ for more detail. 2. See EP-11 “Guide for the Preparation of Specification Using IECQ-System c
