1、EtA STANDARD Molded and Dipped Mica Capacitors (Wire Lead Styles) RS=153=B (Revision of RS-153-A) March 1972 Engineering Deparhe ret ELECTRONIC INDUSTRIES ASSOCIATION EIA 153-B 72 m 3234b00 0028355 L m NOTICE EIA engineering standards are designed to serve the public interest through eliminating mis
2、 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 for his particular need. Existence of such standards shall not in any respect pre- clude
3、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 whether the standard is to be used either domestioally or internationaily. Recommended stand
4、ards 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 assume any obligation whatever to parties adopting the recommended standards. Published
5、 by ELECTRON IC INDUSTRIES ASSOCIATION Engineering Department 2001 Eye Street, N. W., Washington, D. C. 20006 Electronic Industries Association 1972 All rights resewed PRICE: $5.25 ., ._ . : - Printed in U.S.A. EIA 153-8 72 3234b00 002835b 3 m R-155B Page 1 I MOLDED AND DIPPED MICA CAPACITORS (WIRE
6、LEAD STYLES) O (From EIA Standard RS-153-A and Standards Proposal No. 1 O 72-A, formulated under the cognizance of Working Group P-2.3 on Fixed Mica Dielectric Capacitors. ) FOREWORD This standard is a revision of RS-153A, last dated April 1964, and includes specifications for Dipped and Molded Mica
7、 Capacitors. Styles 45 through 61 are not included in this revision since they more properly belong with other transmitting capacitors, now in Specification TR- 109. TABLE OF CONTENTS Page 1. SCOPE . 3 2. APPLICATION NOTES . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . .
8、 . . . . . . . . .3 0 3. TYPE DESIGNATION . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 3.1 Molded Styles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 3.2 Dipped Styles . . . . . . . . .
9、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 4. STANDARD RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 4.1 Case Styles and Capacitance Ranges - Molded Styles . . . . . . . . . . . . . . . . . . . . . .
10、 . . 13 4.2 Case Styles and Capacitance Ranges - Dipped Styles . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.3 Capacitance Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : . . . . . . . . . . .15 4.4 Characteristics . . . . . . . . . . . . . . . . . . . . . .
11、 . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 4.5 Capacitance Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 4.6 Operating Temperature Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 5. MAR
12、KING 16 5.1 Molded Styles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 5.2 Dipped Styles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 6. QUALITY LEVELS, ELECTRICAL, MECHANICAL, AND E
13、NVIRONMENTAL REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16, 6.1 Quality Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -. . . . . . . . .16 6.2 Standard Test Conditions . . . . . . . . . . . . . . . . . . . . . . . .
14、 . . . . . . . . . . . . . . . . . .19 6.3 Visual and Mechanical Examination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 6.4 Dielectric Withstanding Voltage . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 6.5 Insulation Resistance . . .
15、 . . . . . . . . . . . . y . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Q _- _iC ,- A. F c 6.6 Capacitance 20 6.7 Dissipation Factor. . 21 6.8 Temperature Coefficient and Capacitance Drift 21 6.9 Terminal Strength 23 6.10 Moisture Resistance . 23 6.1 1 Vibration . 25 6.12 Solderabili
16、ty . 26 6.13 Insulation Resistance at Elevated Temperature . 26 6.15 Temperature and Immersion Cycling . 28 6.14Life . 26 6.16Sh 1 O O m O0 O00 wm mmm c?c? mc?c? I RS.153-B Page 8 - EIA 153-8 72 m 323qbOO 00283b3 O m 000000000000 ooooodd 6.3.4 Pinched wire leads. NOTE: Defects may be classified as m
17、ajor or minor, by user, as related to end use. 6.4 Dielectric Withstanding Voltage 6.4.1 Test: Under standard conditions, a DC potential equal to 200% of the rated DC working voltage shall be applied for 1-5 seconds, with the surge current limited to 5 milliamperes. 6,4.2 Requirement: The capacitors
18、 shall show no evidence of arcing, breakdown, or physical damage. 6.5 Insulation Resistance 6.5.1 Test: Under standard conditions, each capacitor shall be electrified for not more than 60 seconds with a DC voltage between 85 volts and the rated DC voltage, before reading the insulation resistance. 6
19、5.2 Requirement: Insulation Resistance Initial room temperature readings (25OC k 5OC) per MILC-5D. 20,000 pf Insulation resistance shall be measured as required in 6.5 at the maximum rated temperature of the capacitor, +3C, where the leakage resistance of the leads and connections shall be reduced
20、to a negligible value. 6.13.2 Rquirements: For capacitors rated at 85OC, the insulation resistance shall exceed 15 gigaohms for capacitance values through 5,OOQ pf. For higher values, the insulation resistance shall exceed 75 megohm-microfarads. For capacitors rated at 125“C, the .insulation resista
21、nce shall exceed 10 gigaohms for capacitance values through 3,300 pf. For higher values, the insulation resistance shali exceed 30 megohm-microfarads. 6.14 Life 6.14.1 Test: The capacitors shall be subjected to 150% (+2%) of their rated DC voltage for a period of 250 hours +5 -0 hours. The ambient t
22、emperature shall be maintained within f 3C of the maximum rated temperature of the capacitors. A circuit recommended for this test is 0 shown in Figure 7. (Use of this circuit is optional.) - _._- _- - EIA 153-8 72 W 3234600 0028382 4 W 6: r -1 II III1 II o og w s -0OMt E 99999 00000 E OOMWQ) .- E R
23、S-153-B Page 27 ,- o I- RS-153-8 Page 28 EIA 153-8 72 m 3234b00 O028383 b m -. . 6.14.2 Requirements: f 6.14.2.1 Any capacitor which opens or short circuits (or blows a fast blow fuse if the optical circuit of Figure 7 is used) shall be considered a failure. 6.14.2.2 Dielectric withstanding voltage
24、as outlined in 6.4. 6.14.2.3 Insulation resistance, when measured as outlined in 6.5, shall meet initial requirements. 6.14.2.4 Capacitance, when measured as shown in 6.6, shali not have changed by more than f 1% or f 1 pf, whichever is greater for Characteristics C, D, E, and F, and i: 2% or f 1 pf
25、 whichever is greater for “By Characteristic. 6.14.2.5 The dissipation factor measured as in 6.7 shall not exceed 150% of the initial requirements. NOTE: Samples may be selected on a rotational basis, dependent upon the quantity and “mix” of production, so as to cover all case sizes and ratings wit
26、hin a reasonable period of time. 6.1 5 Temperature and Immersion Cycling 6.15.1 Test: Separate chambers are to be used for the temperature extremes. Equipment shall be capable of reaching ambient specified extreme temperatures within two minutes after capacitors have been placed in the chambers. Cap
27、acitors shall be placed in such a position with respect to the air stream that there is substantially no obstruction to the flow of air across and around the capacitors. The capacitors shall be subjected to a total of five cycles performed continuously and according to the following table. Temperature “C Time in Minutes O -55 f 3 10 5 25 f 3 85 or 125 f o (As applicable) 10 5 25 f 30 10-1 5 30 10-1 5
