NASA-STD-8739.3 w/Change 2散步的英文
December 1997
PREVIOUS VERSION PUBLISHED AS NHB 5300.4(3A-2)
SOLDERED ELECTRICAL
CONNECTIONS NASA TECHNICAL STANDARD
电脑自启动管理在哪里National Aeronautics and
Space Administration
REVISIONS
REVISION DESCRIPTION DATE Initial Issue12/15/97
(FDG) Change 1Typographical corrections to the headers12/8/00
on pages A10 and A12 (Changed (WBHIII)
Acceptable to Unacceptable)
邮递员英文
Change 2Replaced erroneous figure 14 on page A-6 1/18/01
(which was a duplicate of figure 8) with the (WBHIII)
correct figure
FOREWORD
Effective Date: December 15 1997
This Standard provides a baline for NASA project offices to u when preparing or evaluating process procedures for the manufacture of space flight hardware or mission critical ground support equipment.
This Standard:
a. Prescribes NASA’s process and end-item requirements for reliable soldered electrical
connections.
b. Establishes responsibilities for training personnel.
c. Establishes responsibilities for documenting process procedures including supplier
innovations, special process, and changes in technology.
d. For the purpo of this Standard, the term supplier is defined as in-hou NASA,
NASA contractors, and subtier contractors.
NASA Installations shall:
星海音乐学院分数线a. Review and invoke the provisions of this Standard for procurements involving hand
soldering of space flight hardware and mission critical ground support equipment.
穷查理
b. Review and invoke the provisions of this Standard for in-hou operations involving
hand soldering of space flight hardware and mission critical ground support
equipment.
c. Tailor specific provisions of this Standard to address program or unique contractual or
mission requirements.
d. Assure that NASA suppliers invoke this Standard on subcontractors, purcha orders,
and on subtier suppliers where applicable.
e. Furnish copies of this Standard in the quantities required to NASA suppliers and
subtier suppliers.
Questions concerning the application of this Standard to specific procurements shall be referred to the procuring NASA installation, or its designated reprentative.
This Standard cancels NHB 5300.4(3A-2), “Requirements for Soldered Electrical Connections.”
This Standard shall not be rewritten or reissued in any other form not approved by NASA.
Other process not covered by this Standard may be required. The design, materials, and process shall be defined in engineering documentation.
Comments and suggestions for improving this Standard may be submitted using the form “NASA Technical Standard Improvement Proposal.” A copy of the form is included in Appendix B.
Frederick D. Gregory
Associate Administrator for
Safety and Mission Assurance
DISTRIBUTION:映照的拼音
SDL1 (SIQ)中国银行面试
NASA TECHNICAL STANDARDS FOR SPACE FLIGHT AND MISSION CRITICAL GROUND SUPPORT HARDWARE
NASA Technical Standards can be found on the World Wide Web at URL address
霭的读音
www/v/office/codeq/qdoc.pdf.
Title Number Soldered Electrical Connections NASA-STD-8739.3 Crimping, Interconnecting Cables, Harness, and Wiring NASA-STD-8739.4
Fiber Optic Terminations, Cable Asmblies, and Installation NASA-STD-8739.5 Workmanship Standard for Staking and Conformal Coating of
NAS 5300.4(3J-1)
Printed Wiring Boards and Electronic Asmblies
Workmanship Standard for Surface Mount Technology NAS 5300.4(3M)
Standard for Electrostatic Discharge Control (Excluding
NASA-STD-8739.7 Electrically Initiated Explosive Devices)
CONTENTS
PARAGRAPH PAGE
FOREWORD (i)
TABLE OF CONTENTS (iv)
LIST OF FIGURES (vii)
LIST OF TABLES (viii)
LIST OF APPENDICES (viii)
1-1 1-1
1-1
2.2-1 2.2-1 2.2-2 3DEFINITIONS 3-1
3-1 3-7
4-1 4-1 4.2Reliable 4-1 4-2 4.4Approval of Departures From 4-2
4.5Rework 4-2
5.TRAINING AND .5-1 5-1 5..5-1 5.5-1 5.4Training 5-2 5-2 5.6Maintenance of 5-3 5.5-4
