DLA MIL-C-62 F-2008 CAPACITORS FIXED ELECTROLYTIC (DC ALUMINUM DRY ELECTROLYTE POLARIZED) GENERAL SPECIFICATION FOR.pdf

1、 MIL-C-62F 18 December 2008 SUPERSEDING MIL-C-62E 2 February 2004 CAPACITORS, FIXED, ELECTROLYTIC (DC. ALUMINUM, DRY ELECTROLYTE, POLARIZED), GENERAL SPECIFICATION FOR This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This spec

2、ification covers the general requirements for polarized, dry-electrolyte, aluminum, direct current (dc), fixed capacitors for use in filter and bypass circuits where large excesses of capacitance over the nominal capacitance can be tolerated. 1.2 Classification. 1.2.1 Type designation. The type desi

3、gnation will be in the following form, and as specified (see 3.1): CE10 C 5R6 F Style Characteristic Capacitance Voltage (1.2.1.1) (1.2.1.2) (1.2.1.3) (1.2.1.4) 1.2.1.1 Style. The style is identified by the two-letter symbol “CE” followed by a two-digit number. The letters identify polarized, dry-el

4、ectrolyte, aluminum, dc, fixed capacitors. The number identifies the shape and dimension of the capacitor. 1.2.1.2 Characteristic. The characteristic is identified by a single letter in accordance with table I. TABLE I. Characteristic. Symbol Operating temperature range C - - - - - - - - - - -40 to

5、+85C AMSC N/A FSC5910 INCH-POUND INACTIVE FOR NEW DESIGN AFTER 7 OCTOBER 1998 INCH-POUNDComments, suggestions, or questions on this document should be addressed to: Defense Supply Center, Columbus, DSCC-VAT, Post Office Box 3990, Columbus, OH 43216-5000 or e-mailed to capacitorfilterdscc.dla.mil. Si

6、nce contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-62F 2 1.2.1.3 Capacitance. The n

7、ominal capacitance value expressed in microfarads (F) is identified by a three-digit number. When the nominal capacitance is 10 F or greater, the first two digits represent significant figures and the last digit specifies the number of zeros to follow (Examples: 10 F = 100; 150 F = 151; 1,500 F = 15

8、2). When the nominal capacitance value is less than 10 F (Examples: whole number such as 9; a mixed number such as 4.7; or a fractional number such as 0.1 or 0.56), the letter “R” will be used to indicate the decimal point and will be placed where appropriate in the three digit number. When the lett

9、er “R” is used, the succeeding digit or digits become significant (Examples: 2 F = 2R0; 4.7F = 4R7; 0.1 F = 0R1: 0.56 F = R56). 1.2.1.4 Voltages. The dc rated voltage, dc surge voltage, and capacitance tolerance are identified by a single letter in accordance with table II. TABLE II. DC working volt

10、age, dc surge voltage, and capacitance tolerance. Symbol DC rated voltage DC surge voltage Capacitance tolerance Symbol DC rated voltage DC surge voltage Capacitance tolerance C D E F G H J volts 5 10 15 25 50 100 150 volts 7 15 20 40 75 150 200 percent -10, +75 -10, +75 -10, +75 -10, +75 -10, +75 -

11、10, +75 -10, +75 K M N P Q R volts 200 250 300 350 400 450 volts 250 300 350 400 450 500 percent -10, +50 -10, +50 -10, +50 -10, +50 -10, +50 -10, +50 1.2.2 Family. Capacitors covered by this specification are classified by families according to their means of mounting, as specified in table III (se

12、e 3.1). TABLE III. Families. Family Means of mounting Styles 1 Axial wire-lead capacitors mounted by a tangential bracket or wrap-around bands. CE10, CE11, CE12, and CE13 2 Universal-mounting capacitors mounted by a mounting ring. CE31, CE32, CE33, CE34, CE35, and CE36 3 Stud-mounting capacitors mou

13、nted by a nut screwed on the threaded portion at the terminal end of the capacitor. CE41, CE42, CE44, and CE45 4 Plug-in capacitors mounted by plugging the terminals into a standard, medium octal socket with a .687 .007-inch (17.45 mm 0.18 mm)-diameter pin circle and secured by suitable clamps. CE51

14、, CE52, CE53, CE56, CE57, and CE58 5 Bathtub capacitors mounted by mounting lugs. CE63 and CE64 6 Tapped-terminal capacitors (screw insert for bus-bar connection), mounted by a wraparound, footed-type bracket. CE70 and CE71 Provided by IHSNot for ResaleNo reproduction or networking permitted without

15、 license from IHS-,-,-MIL-C-62F 3 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as e

16、xamples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, st

17、andards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2). SPECIFICATIONS (See supplement 1 for list o

18、f applicable specification sheets.) STANDARDS FEDERAL FED-STD-H28 Screw Thread Standards for Federal Services. DEPARTMENT OF DEFENSE MIL-STD-202 - Test Method Standard Electronic and Electrical Component Parts. MIL-STD-1285 - Marking of Electrical and Electronic Parts. (Copies of these documents are

19、 available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent

20、 specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM E1282 - Standard Guide for Specifying the Chemical Composition and Selecting Sampling Practices and Quantitative Analys

21、is Methods for Metals, Ores, and Related Materials. (Copies of these documents are available online at http:/www.astm.org or application for copies should be addressed to the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. 2.4 Order of precedence.

22、 In the event of a conflict between the text of this document and the references cited herein (except for related associated specifications, specification sheets, or MS sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations

23、unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Specification sheets. The individual part requirements shall be as specified herein and in accordance with the applicable specification sheet. In the event of any conflict between any requirements of this specification and the specif

24、ication sheet, the latter shall govern (see 6.2). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-62F 4 3.2 Qualification. Capacitors furnished under this specification shall be products which are qualified for listing on the applicable qualifi

25、ed products list at the time set for the opening of the bids (see 4.3 and 6.2). 3.3 Material. The material shall be as specified herein. However, when a definite material is not specified, a material shall be used which will enable the capacitors to meet the performance requirements of this specific

26、ation. Acceptance or approval of any constituent material shall not be construed as a guaranty of the acceptance of the finished product. 3.3.1 Aluminum foil. Foil used in the construction of the anode shall have a minimum aluminum content of 99.95 percent, determined by the difference between 100 p

27、ercent and the sum of all other metallic elements present in the amounts of 0.001 percent or more, each expressed to the third decimal. If analysis of the aluminum foil is required, it shall be made in accordance with ASTM E1282. 3.3.2 Internal examination. There shall be no visible evidence of corr

28、osion when capacitors are examined as specified in 4.5.1.1. 3.4 Design and construction. Capacitors shall be of the design, construction, and physical dimensions specified (see 3.1). 3.4.1 Case. Each capacitor shall be in a metallic case and shall be effectively sealed against the entry of contamina

29、nts, and leakage or evaporation of the electrolyte. The element shall be secured so that there will be no injurious movement in the case. 3.4.1.1 Case insulation (when applicable). Case insulation shall not soften or creep at the high operating temperature. The use of cardboard sleeves for insulatin

30、g purposes shall not be permitted. 3.4.2 Terminals. The terminals shall be permanently secured internally or externally, as applicable. All external joints shall be soldered or welded. Axial wire or tab-type terminals shall be coated in such a manner as to insure their ability to meet the requiremen

31、ts of the solderability test (see 3.5 and 3.23.1). 3.4.2.1 Solder lugs and solder-lug terminals. Solder lugs and solder-lug terminals may be of any shape, provided dimensional limits are met, and shall be coated with solder having a tin content of 40 to 70 percent. Solder lugs on styles CE31 through

32、 CE45 may be secured by spinning. 3.4.3 Threaded parts. All threaded parts shall be in accordance with FED-STD-H28 (see 3.1). All threaded parts shall engage by at least three full threads. * 3.4.4 Pure tin. The use of pure tin, as an undercoat for final finish, is prohibited both internally and ext

33、ernally. Tin content of capacitor components and solder shall not exceed 97 percent, by mass. Tin shall be alloyed with a minimum of 3 percent lead, by mass (see 6.18). 3.5 Solderability (not applicable to plug-in capacitors and styles CE70 and CE71). When tested as specified in 4.5.2, the dipped su

34、rface of the leads shall be at least 95-percent covered with a new, smooth, solder coating. The remaining 5-percent of the lead surface shall show only small pinholes or rough spots; these shall not be concentrated in one area. Bare base metal and areas where the solder dip failed to cover the origi

35、nal coating are indication of poor solderability, and shall be cause for failure. In case of dispute, the percent of coverage with pinholes or rough spots shall be determined by actual measurement of these areas, as compared to the total area. Provided by IHSNot for ResaleNo reproduction or networki

36、ng permitted without license from IHS-,-,-MIL-C-62F 5 3.6 DC leakage. When measured as specified in 4.5.3, the dc leakage shall not exceed the value specified (see 3.1). 3.7 Capacitance. When measured as specified in 4.5.4, the capacitance value shall be within the tolerance specified (see table II)

37、. 3.8 Dissipation factor. When measured as specified in 4.5.5, the dissipation factor shall not exceed the value specified (see 3.1). 3.9 Terminal strength (not applicable to plug-in capacitors). When capacitors are tested as specified in 4.5.6, there shall be no loosening of the terminals nor perma

38、nent damage to the terminals, terminal weld, or terminal solder. Threaded or tapped-stud terminals shall exhibit no perceptible movement relative to the case, under the applied torque. 3.10 Shock (specified pulse). When capacitors are tested as specified in 4.5.7, there shall be no intermittent cont

39、acts of 0.5 milliseconds (ms) or greater, nor shall there be any arcing, open- or short-circuiting, or mechanical damage. 3.11 Vibration. When capacitors are tested as specified in 4.5.8, there shall be no intermittent contacts of 0.5 ms or greater, nor shall there be any open- or short-circuiting,

40、mechanical damage, or leakage of the electrolyte. 3.12 Salt atmosphere. When capacitors are tested as specified in 4.5.9, there shall be no corrosion or other defects that will affect life or serviceability. There shall be no unwrapping of or mechanical damage to insulating sleeves. Marking shall re

41、main legible after the test. 3.13 Temperature cycling and immersion. When tested as specified in 4.5.10, capacitors shall meet the following requirements: Dielectric withstanding voltage (see 4.5.11.2) insulating sleeves only - - - - - Shall withstand a potential of not less than 4,000 volts dc. DC

42、leakage- - - - - - - - - - - - - - - - - - - - - Shall not exceed 150 percent of the initial requirement (see 3.6), when measured as specified in 4.5.3. Capacitance- - - - - - - - - - - - - - - - - - - - Change not more than 5 percent from the initial value obtained when measured as specified in 4.5

43、.4. Dissipation factor - - - - - - - - - - - - - - - - As specified in 3.8. Visual examination - - - - - - - - - - - - - - - There shall be no harmful or extensive corrosion and at least 90 percent of any exposed metallic surface of the capacitor shall be protected by the finish. There shall be no m

44、ore than 10 percent corrosion of the terminal hardware or mounting surface. There shall be no unwrapping of or mechanical damage to insulating sleeves. There shall be no leakage of the electrolyte or deformation of the case, and marking shall remain legible after the test. Provided by IHSNot for Res

45、aleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-62F 6 3.14 Moisture resistance. When tested as specified in 4.5.11, capacitors shall meet the following requirements: Dielectric withstanding voltage (see 4.5.11.2) insulating sleeves only - - - - - Shall withstand a poten

46、tial of not less than 4,000 volts dc. Insulation resistance: (insulating sleeves) - - - - - - - - - - - - - - Shall be not less than 100 megohms. DC leakage - - - - - - - - - - - - - - - - - - - Shall not exceed 150 percent of the initial requirement (see 3.6) when measured as specified in 4.5.3. Ca

47、pacitance- - - - - - - - - - - - - - - - - - - - Change not more than 5 percent from the initial value obtained when measured as specified in 4.5.4. Dissipation factor - - - - - - - - - - - - - - - - As specified in 3.8. Visual examination - - - - - - - - - - - - - - - There shall be no harmful or e

48、xtensive corrosion and at least 90 percent of any exposed metallic surface of the capacitor shall be protected by the finish. There shall be no more than 10 percent corrosion of the terminal hardware or mounting surface. There shall be no leakage of the electrolyte or deformation of the case, and ma

49、rking shall remain legible after the test. Insulating sleeves shall not exhibit evidence of burning, charring, or arcing. 3.15 Impedance. When determined as specified in 4.5.12, the impedance shall not exceed the value specified (see 3.1). 3.16 Stability at low and high temperatures. When tested as specified in 4.5.13, capacitors shall meet the following requirements: Step 1 DC leakage - - - - - - - - - - - As specified in 3.