1、Copyright 2000 Society of Automotive Engineers, Inc. Printed in the U.S.A.All rights reserved. .TO PLACE A DOCUMENT ORDER: (724) 776-4970 FAX: (724) 776-0790 SAE WEB ADDRESS: http:/www.sae.org400 Commonwealth Drive, Warrendale, PA 15096-0001SAE Technical StandardsBoard Rulesprovidethat:“Thisreport i
2、s published by SAEtoadvance thestateoftechnical and engineeringsciences. The useofthis reportisentirelyvoluntary, and its applicabilityand suitability for any particularuse, includingany patent infringement arising therefrom, isthe soleresponsibility of the user.”SAE reviews each technical report at
3、 least every five years at whichtime it maybereaffirmed, revised, or cancelled. SAE invites your writtencomments and suggestions.SHEET 1 OF 7AS39029/104THIRD ANGLE PROJECTIONAEROSPACE STANDARDAS39029/104ISSUED2000-07CONTACTS, ELECTRICAL CONNECTOR,CONCENTRIC TWINAX, PIN, SHIELDED, SIZE 8(FOR MIL-C-28
4、840)PREPARED BY SAE SUBCOMMITTEE AE-8C1FEDERAL SUPPLY CLASS 5935NOTICETHIS DOCUMENT HAS BEEN TAKEN DIRECTLY FROM U.S. MILITARY SPECIFICATION MIL-C-39029/104 AND CONTAINS ONLY MINOR EDITORIAL AND FORMAT CHANGES REQUIRED TO BRING IT INTO CONFORMANCE WITH THE PUBLISHING REQUIREMENTS OF SAE TECHNICAL ST
5、ANDARDS. THE INITIAL RELEASE OF THIS DOCUMENT IS INTENDED TO REPLACE MIL-C-39029/104. ANY PART NUMBERS ESTABLISHED BY THE ORIGINAL SPECIFICATION REMAIN UNCHANGED.THE ORIGINAL MILITARY SPECIFICATION WAS ADOPTED AS AN SAE STANDARD UNDER THE PROVISIONS OF THE SAE TECHNICAL STANDARDS BOARD (TSB) RULES A
6、ND REGULATIONS (TSB 001) PERTAINING TO ACCELERATED ADOPTION OF GOVERNMENT SPECIFICATIONS AND STANDARDS. TSB RULES PROVIDE FOR (A) THE PUBLICATION OF PORTIONS OF UNREVISED GOVERNMENT SPECIFICATIONS AND STANDARDS WITHOUT CONSENSUS VOTING AT THE SAE COMMITTEE LEVEL, AND (B) THE USE OF THE EXISTING GOVE
7、RNMENT SPECIFICATION OR STANDARD FORMAT.UNDER DEPARTMENT OF DEFENSE POLICIES AND PROCEDURES, ANY QUALIFICATION REQUIREMENTS AND ASSOCIATED QUALIFIED PRODUCTS LISTS ARE MANDATORY FOR DOD CONTRACTS. ANY REQUIREMENT RELATING TO QUALIFIED PRODUCTS LISTS (QPLS) HAS NOT BEEN ADOPTED BY SAE AND IS NOT PART
8、 OF THIS SAE TECHNICAL DOCUMENT.400 Commonwealth Drive, Warrendale, PA 15096-0001CONTACTS, ELECTRICAL CONNECTOR,CONCENTRIC TWINAX, PIN, SHIELDED, SIZE 8(FOR MIL-C-28840)AEROSPACE STANDARD AS39029/104SHEET 2 OF 7AS39029/104THE REQUIREMENTS FOR ACQUIRING THE CONTACTS DESCRIBED HEREIN SHALL CONSIST OF
9、THIS SPECIFICATION AND THE LATEST ISSUE OF MIL-C-39029.FIGURE 1. CONCENTRIC TWINAX CONTACT.400 Commonwealth Drive, Warrendale, PA 15096-0001CONTACTS, ELECTRICAL CONNECTOR,CONCENTRIC TWINAX, PIN, SHIELDED, SIZE 8(FOR MIL-C-28840)AEROSPACE STANDARD AS39029/104SHEET 3 OF 7AS39029/104FIGURE 2. INTERMEDI
10、ATE SOCKET CONTACT.FIGURE 3. CENTER PIN CONTACT.400 Commonwealth Drive, Warrendale, PA 15096-0001CONTACTS, ELECTRICAL CONNECTOR,CONCENTRIC TWINAX, PIN, SHIELDED, SIZE 8(FOR MIL-C-28840)AEROSPACE STANDARD AS39029/104SHEET 4 OF 7AS39029/104REQUIREMENTS:Qualification:Contacts shall comply with the reli
11、ability assurance provisions of MIL-STD-790 as specified in MIL-C-28840.Design and construction:Dimensions and configurations: See figures 1 through 3 and table I.TABLE I. DESIGN CHARACTERISTICS.Assembly procedure: Manufacturers recommended assembly instructions shall be shipped with unit package.El
12、ectrical:Low signal level contact resistance (center and intermediate contacts only): See table II.Contact resistance: See table III.Frequency: 0 to 20 MHz (operating frequency range).Voltage rating: 500 volts rms maximum; working voltage at sea level, 125 volts rms maximum at 70,000 feet.TABLE II.
13、LOW SIGNAL LEVEL CONTACT, RESISTANCE (CENTER AND INTERMEDIATE CONTACTS ONLY).TABLE III. CONTACT RESISTANCE.400 Commonwealth Drive, Warrendale, PA 15096-0001CONTACTS, ELECTRICAL CONNECTOR,CONCENTRIC TWINAX, PIN, SHIELDED, SIZE 8(FOR MIL-C-28840)AEROSPACE STANDARD AS39029/104SHEET 5 OF 7AS39029/104Die
14、lectric withstanding voltage: Shall be as specified in table IV.TABLE IV. DIELECTRIC WITHSTANDING VOLTAGE.Mating contact: Shall be in accordance with MIL-C-39029/105.Mechanical:Contact engagement and separation force (socket contacts only): The engagement depth shall be a minimumof 0.7 of the minimu
15、m socket bored depth. The test pins shall be in accordance with MS3197, except thediameters shall be as specified in table V. Provision for clearance hole on outer contact. Test pins shall beprovided.TABLE V. CONTACT ENGAGEMENT AND SEPARATION FORCE.Crimp tensile strength (center, intermediate, and o
16、uter contact crimp joint): See table VI.TABLE VI. CRIMP TENSILE STRENGTH (AT AMBIENT).Vibration: Method 2005 of MIL-STD-1344, test condition V. The following details shall apply:a. Use the vibration envelope shown on figure 4.b. Vibration: To be conducted at standard test conditions.c. Duration: Eig
17、ht hours in the longitudinal direction and 8 hours in a perpendicular direction (16 hours).400 Commonwealth Drive, Warrendale, PA 15096-0001CONTACTS, ELECTRICAL CONNECTOR,CONCENTRIC TWINAX, PIN, SHIELDED, SIZE 8(FOR MIL-C-28840)AEROSPACE STANDARD AS39029/104SHEET 6 OF 7AS39029/104FIGURE 4. VIBRATION
18、 ENVELOPE.High impact shock: All contacts shall be wired in a series circuit with 100 milliampers maximum current flow through the series circuit during shock. Contacts shall be monitored for any discontinuities. A detector capable of detecting all discontinuities in excess of 1 microsecond shall be
19、 used. Wired and mated contacts shall be subjected to the test specified in MIL-S-901, grade A with the following modifications and additions. Mounting fixture shall be in accordance with MIL-S-901. The cable or wire bundle shall be supported on a stationary frame to provide a free flexing cable len
20、gth between the frame and fixture of not less than 36 inches (914.4 mm).a. Coupling: Coupled by normal mounting means.b. Test condition A: The wire bundle shall be provided with straight, open frame, strain relief accessory hardware.Tools: Shall be as specified in tables VII and VIII.TABLE VII. TOOL
21、S (INSTALLING AND REMOVAL).400 Commonwealth Drive, Warrendale, PA 15096-0001CONTACTS, ELECTRICAL CONNECTOR,CONCENTRIC TWINAX, PIN, SHIELDED, SIZE 8(FOR MIL-C-28840)AEROSPACE STANDARD AS39029/104SHEET 7 OF 7AS39029/104TABLE VIII. TOOLS (CRIMPING).Environmental:Temperature rating: -55C to +200C.Humidity: In accordance with MIL-STD-1344, method 1002, type II.Part number: See table IX.TABLE IX. PART NUMBER.QPL evaluating activity: Naval Weapons Support Center, Crane, IN 47522.
