ECA 395-1971 Polarized Aluminum Electrolytic Capacitors for Long Life (Type 1) and for General Purpose Application (Type 2) (Revision of RS-154-B and RS-205) (Correction - March 19.pdf

1、a EIA STANDARD m oi VI ? Polarized Aluminum 4 Electrolytic Capacitors 9 Y for Long Eje (Type 1) and for General Purpose Application (Type 2) - O Engineering Department RS-395 (Revision of RS-154-B and RS-205) October 1971 ELECTRONIC INDWTRIES ASSOCOATION EIA 39s 7L HU 3234600 0076057 2 Hi NOTICE EIA

2、 engineering standards are designed to serve the public interest through eliminating mis- understandings between manufacturers and purchasers, facilitating interchangeability and improve- ment of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product f

3、or his particular need. Existence of such standards shall not in any respect pre- clude any member or non-member of EIA from manufacturing or selling products not conforming to such standards, nor shall the existence of such standards preclude their voluntary use by those other than EIA members whet

4、her the standard is to be used either domestically or internationally. Recommended standards are adopted by EIA without regard to whether or not their adoption may involve patents on articles, materials, or processes. By such action, EIA does not assume any liability to any patent owner, nor does it

5、 assume any obligation whatever to parties adopting the recommended standards. Published by ELECTRONIC INDUSTRIES ASSOCIATION Engineering Department 2001 Eye Street, N. W., Washington, D. C. 20006 Electronic industries Association 197 I Ail rights reserved PRICE: $5.50 Printed in U.S.A. EIA 395 71 a

6、 3234600 0076058 4 RS-395 Page 1 POLARIZED ALUMINUM ELECTROLYTIC CAPACITORS FOR LONG LIFE (TYPE 1) AND FOR GENERAL PURPOSE APPLICATION (TYPE 2) iii (From EIA Standards RS-154-B and RS-205, and Standards Proposals No. 1 O 73 and 1098, formulated under the cognizance of Working Group P-2.4 on Aluminum

7、 Electrolytic Capacitors.) CONTENTS Page Paragraph - Preface Scope-Object 3 . 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 a 1.9 1.10 1.1 1 1.12 1.1-3 1.14 1.15 1.16 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 a 3 3 3 4 4 4 Section One - Definitions Type1 Capacitors . :, Type2Capacitor.s . Rated Temperature Ra

8、nge . Maximum Rated Temperature . Minimum Rated Temperature . Rated DC Voltage . RatedCapacitance 4 Leakagecurrent 4 RippleCurrent 4 . 4 . . DissipationFactor 5 Rated Surge Voltage . 5 Operating Life 5 ShelfLife . 6 Style . 6 Qualification Test AcceptanceTests 6 Section Two - General Requirements an

9、d Methods of Measurement 7 Standard Capacitance Ratings . 7 Standard Capacitance Tolerances 7 Standard DC Rated Voltages and Surge Voltages 8 Standard Temperature Ranges. . 8 Product Qualification 8 Schedule of Qualification Tests . 9 Standard Conditions for Testing . . followed by eight hours expos

10、ure to standard atmospheric conditions making a total of 120 hours. Immediately after the completion of the fifth cycle, the DC leakage, capacitance, and dissipation factor shall be measured and shall meet the initial requirements of this standard. 2.19 Case Insulation (if applicable): Capacitors wi

11、th outer insulating sleeves shall be tested in accordance with Method 13, Insulation Resistance Test, of EL4 Standard RS-186 with the following details: a) The capacitor shall be wrapped tightly with two turns of thin metal foil over the insulating sleeve. The foil shall be no closer than 1/4” from

12、either end of the capacitor. b) Three turns of AWG size 18 bare copper wire shall _ be wound around the center of the foil. _ - EIA 395 71 W 3234600 0076072 7 ls118 RS-395 Page 14 c) Insulation resistance shall be measured between the capacitor terminations shorted together and the foi wrap at 500 f

13、 10V DC with an electrification time of one minute +O, -1 5 seconds. 2.19.1 Under these conditions, the insulation resistance shall not be less than 1 O0 megohms. 2.19.2 Insulation Withstanding Voltage: Within five minutes following the test in paragraph 2.19.1, the capacitor with foil wrap retained

14、 shall be tested for insulation withstanding voltage. A voltage of 2000 f 1% VDC shall be applied between the capacitor terminations shorted together and the foil wrap. This voltage shall be applied by increasing it from zero to 2000 VDC at a rate not exceeding 500V per second. 2.19.2.1 Under these

15、conditions, there shall be no evidence of breakdown of the case insulation. This shall be determined by removing the foil wrap and examining the case insulation for evidence of burning, charring, or arcing. 2.20 Coupling Impedance for Multi-ection Capacitors (if applicable) : 2.20.1 Whether or not t

16、his test shall be a requirement is a matter of agreement between the manufacturer and his customer. When performed as below the coupling impedance shall not exceed .O15 ohm or other value as agreed between the manufacturer and his customer. 2.20.2 The common coupling impedance shall be determined by

17、 passing a 60 Hz current of between 100 to 500 milliamperes through the input section of the multi-section capacitor and measuring the voltage developed across the second, third, or fourth section as below: Using this method, the coupling impedance is calculated from the following expression: (The v

18、oltmeter lead on the common connection should be made at a separate point on the mounting ring than the power lead to eliminate the possibility of measuring the contact resistance of the power lead o the mounting ring.) EX 10-3 z= 1 where: Z = coupling impedance in ohms I = RMS input current in mill

19、iamperes at 60 Hz E= Developed voltage across the section involved as measured by a VTVM. 2.21 Seal Test (Applicable to Type 1 Only): 2.2 1.1 Capacitors of Type 1 only shall be capable of meeting the following container seal test: a 2.21.2 Subject capacitors to two temperature cycles in circulated a

20、ir in accordance with the foilowing schedule: a) Place capacitors in an oven maintained at the capacitor maximum rated temperature f 3C. and hold for 15 minutes. b) Remove from oven and al10.w capacitors to cool to room temperature. c) Place capacitors in a cold chamber maintained at -20C f 2C and h

21、old for 15 minutes, d) Remove from chamber and allow capacitors to attain room temperature. 2.21.3 Immerse capacitors in hot water maintained at 90C f 5C for a period of three minutes. During immersion, there shall be no chain of repetitive bubbling from any part of the capacitor. 2.22 Characteristi

22、cs at Minimum and Maximum Temperatures: 2.22.1 The measurements in Table V shail be made in the order shown. Capacitors under measurement shall be brought to thermal stability at each step of testing. Thermal stability will have been reached when no further change in capacitance (or impedance) is ob

23、served between two successive measurements taken at 15 minute intervals. TABLE V Step 1 - 2 3 a 4 Temuerature Standard atmospheric conditions -3 Minimum temperature +OC as agreed between manufacturer and his customer Maximum temperature -0C as agreed between manufacturer and his customer +3 Standard

24、 atmospheric conditions I Test DC Leakage Capacitance DF Impedance* DC Leakage* Capacitance * DF* DC Leakage Capacitance DF Test Paragraph 2.10 2.11 2.12 2.13 2.10 2.1 1 2.12 2.10 2.11 2.12 RS-395 Page 15 EIA 395 71 3234600 6073 O W RS395 Page 16 *NOTE: The limits and/or changes for these measuremen

25、ts shall be a matter of agreement between the manufacturer and his customer. 2.23 Surge Test: 2.23.1 Capacitors shall be subjected to the applicable rated surge voltage shown in Table 1. Multiple section capacitors shall have the surge voltage applied to the first filter section only. Voltage applic

26、ation shall be at normal room temperature and through a series resistor of value: Rated Capacitance Below 2500 pF 2500 pF and up Value of Series Resistor 100 f 10% ohms 25 O6 C f 10% ohms R= where C = rated pF Surge voltage application shall be for a period of 30 seconds followed by 4-1/2 minutes du

27、ring which each capacitor is discharged through the charging series resistor (or separate resistor). The test shall continue for 120 hours. 2.23.2 Following the above test, the DC leakage current and DF shall meet the initial requirements of this standard and the capacitance shall not be less than 8

28、0% of the initial measuremen t. The capacitor shall show no evidence of mechanical damage or leakage of electrolyte. NOTE: Condensation on the terminals or cover, without free flowing (droplets) electrolyte is permitted. 2.24 Life (Operating): 2.24.1 Capacitors shall be tested in accordance with the

29、 procedures of Method 12, Heat-Life Test, of EIA Standard 186. They shall be mounted by their normal or supplemental means and be subjected to continuous rated DC voltage at maximum rated temperature. 2.24.2 For Type 1 capacitors, the length of the life test shall be 2000 hours. Upon completion of t

30、his test, the DC leakage current shall not exceed the limits specified in paragraph 2.10.3, Table II. The capacitance change as compared with the initial reading shall not exceed 20%. The dissipation factor shall not exceed 1.5 times the limits specified in paragraph 2.12.1. 2.24.3 For Type 2 capaci

31、tors, the length of the life test shall be 1000 hours. Upon completion of this test, the DC leakage current shall not exceed the limits specified in paragraph 2.10.3, Table II. The capacitance change as compared with the initial reading shall not exceed 20%. a e , -. _ _ -. EIA 395 71 81 3234600 007

32、hfl 2 II 2.25 3.1 RS-395 Page 17 The dissipation factor shall not exceed 1.5 times the hits specified in paragraph 2.12.1. 2.24.4 In addition to meeting the requirements of paragraph 2.24.2 and 2.24.3, capacitors of both types shali show no evidence of mechanical damage or leakage of electrolyte. NO

33、TE: Condensation on the terminals or cover without free flowing (droplets) electrolyte is permitted. Shelf Life (Accelerated): 2.25.1 To demonstrate shelf life capability, capacitors shall be subjected to maximum rated temperature for 250 k 8 hours for type 1 and 100 f 8 hours for type 2, during whi

34、ch time no voltage shall be applied. Within 24 hours after completion of the test, the capacitors shall be measured at standard atmospheric conditions for DC leakage, capacitance, and dissipation factor and shall deet the limits below. 2.25.2 The DC leakage current shall not exceed twice the value s

35、hown in paragraph 2.10.3 of this standard. The capacitance shall not change more than 10% from the initial measured value. The dissipation factor shall not be more than 1.5 times the value shown in paragraph 2.12.1. 2.25.3 Capacitors shall show no evidence of mechanical damage or leakage of electrol

36、yte. NOTE: Condensation on the terminals or cover without free flowing (droplets) electrolyte is permitted. SECTION THREE - APPLICATION NOTES AC Ripple: Where application requires testing to be conducted with an AC ripple voltage superimposed on the DC bias voltage, the amount of ripple voltage or r

37、ipple current, ripple frequency, ambient temperature, sections of multi-section capacitors which will have ripple applied, length of test, and allowable changes in measured values after the test shall be a matter of agreement between the manufacturer and his customer. 3.2 Cleaning Solvents: The use

38、of halogenated hydrocarbon solvents associated with the cleaning of aluminum electrolytic capacitors may adversely affect the capacitors performance. Suitable precautions as agreed upon between the manufacturer and his customer are recommended should these materials be used. i- RS-395 Page 18 ADDEND

39、UM TABLE OF CONTENTS Section Four - Detail Specifications Detail No. 1 - Metal Case Twist Mount and Printed Circuit Mount Round Aluminum Electrolytic Capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Style 10 - 1” Dia. Twist Mount . . . . . . . . , . . . . . . .

40、. . . . . . . . . . . . . . . . . . . . . . . . . . , . Style 11 - 1 ” Dia. Printed Circuit Mount . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . Style 12 - 1-3/8” Dia. Twist Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Style 13 -

41、1-3/8” Dia. Printed Circuit Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Detail No. 2 - Metal Case Twist Mount Round Aluminum Electrolytic Capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Style 20 - 1” Dia. Case . . . . . . . . . . .

42、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Style 22 - 1-3/8” Dia. Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Detail No. 3 - Metal Case Tubular Aluminum Electrolytic Capacitors with Lead Terminations . . . . .

43、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Style 30 - Metal Case Axial Lead Detail No. 4 - Metal Case Round Aluminum Electrolytic Capacitors with Terminations at One End - Intended

44、 for SupplementalMounting Style 40 - With Screw Insert Terminations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 20 21 22 23 24 25 26 27 28 29 30 RS-395 Pagel9 , DETAIL NO. 1 Metal Case Twist Mount and Printed Circuit Mount Round Aluminum Electrolytic Capacitors 1. Scope

45、: The following Detail Specification covers standard case sizes, mounting dimensions, and requirements for twist mount and printed circuit mount aluminum electrolytic capacitors to be supplied to the general requirements of this standard. This style is available as a Type 2 capacitor only. 2. Termin

46、ai Strength: (See paragraph 2.15 of Section Two - General Requirements) 2.1 For Type I Test: Tensile - Axial mill - the applied load to the terminals shall be 4.4 lbs. 2.2 For Type IV Test: Bending - two consecutive bends shail be applied. 3. Case Insulation: This standard covers capacitors with no

47、outer case insulation. However, if case insulation is required, the choice of insulating material, wall thickness, and other applicable details shall be agreed upon between the manufacturer and his customer. . EIA 375 71 W 3234600 0076077 B RS395 Page 20 STYLE 10 1“ DIAMETER TWIST MOUNT ALUMINUM ELE

48、CTROLYTIC CAPACITORS (CASE NEGATIVE) DUAL TRIPLE SINGLE Blank Ear (28.18) (.4) HEIGHT f.125“ (3.16) Blank Ear Blank Ear TERMINAL SHAPE OPTIONAL NOTE: This mounting ear is blank and serves as an index when assembling to chassis. R ECOM ME N DE D CHASSIS CUT OUT, MINIMUM CHASSIS THICKNESS = .025“ .64)

49、“ .368“ (9.34) .368“ (5.56) (.08) (1.52) (15.88) ANODE TERMINAL IDENTI FICATION HIGHEST TO LOWEST VOLTAGE TERMINAL MARKING ONE TWO THREE SECTION SECTIONS SECTIONS (SINGLE) (DUAL) (TRIPLE) BLANK c3 0 - HIGH A A BLANK -LOW (For identical voltages use above sequence based on capacitance.) (25.4) 1“ DIAM. f .016“ (.4) NOTES: 1. Where no tolerances are given, manufacturers normal tolerances shall apply. 2. Metric equivalents tabulated and in parentheses. (Based on 1 inch = 25.4 MM.) 3. Case diameter and heights are basic uninsulated dimensions. STANDARD CASE HEIGHT