607 - Soldered Connectors.pdf

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THROUGH-HOLE SOLDERING
SOLDERED CONNECTORS
SOLDERED CONNECTORS
connectors
provide
an
Board-mounted
electrical / mechanical solution to the problem
of providing reliable input and output of power
and signals to the printed wiring assembly
(PWA). While the incorporation of connectors
into a PWA may increase reliability, bulk, and
weight concerns, their use facilitates testing
and field replacement, without the hardwiring
of harnesses and cables to the PWA.
Connectors are considered to be components,
and the mounting and soldering requirements
are identical to those imposed on other
through-hole components.
THROUGH-HOLE SOLDERING
SOLDERED CONNECTORS (cont.)
PREFERRED
GENERAL REQUIREMENTS
The connector body shall be parallel to and in full
contact with the mounting surface. Standoff steps
on all leads shall rest on the lands, and lead
protrusion shall meet requirements. Mounting
features (i.e.: board lock tabs or fasteners) shall
be fully inserted and set.
PREFERRED
KEYING
Connectors should be keyed to prevent incorrect
mating / interchanging with similar sized / colored
connectors.
Best Workmanship Practice
ACCEPTABLE
ALTERNATIVE MECHANICAL MOUNTING
Connectors not supplied with a locking tab or
fastener system shall be secured with staking
compound. Staking compound shall not be
applied over conductive surfaces.
Best Workmanship Practice
UNACCEPTABLE
MISSING MOUNTING / CONNECTING
HARDWARE
Missing mounting / connecting hardware can
interfere with the proper mating of the connector.
Best Workmanship Practice
NASA WORKMANSHIP STANDARDS
Released:
Revision:
Revision Date:
NASA WORKMANSHIP STANDARDS
Released:
Revision:
Revision Date:
06.27.2002
Book:
Section:
Page:
06.27.2002
Book:
Section:
Page:
6
6.07
1
6
6.07
3
THROUGH-HOLE SOLDERING
SOLDERED CONNECTORS (cont.)
THROUGH-HOLE SOLDERING
SOLDERED CONNECTORS (cont.)
UNACCEPTABLE
JUMPER BLOCKS
Jumper / selector blocks are not recommended
for use in flight applications, without prior written
approval. Provisions shall be made to ensure
positive locking of jumper to prevent movement /
unauthorized removal.
Best Workmanship Practice
UNACCEPTABLE
MECHANICAL DAMAGE
Connectors exhibiting mechanical damage (i.e.:
exposed base metal, dings, bent pins, broken
mounts, missing EMI inserts, etc.) shall be
rejected. Pins exhibiting minor bending may be
reworked with approved tooling and processes.
Best Workmanship Practice
NASA WORKMANSHIP STANDARDS
Released:
Revision:
Revision Date:
NASA WORKMANSHIP STANDARDS
Released:
Revision:
Revision Date:
06.27.2002
Book:
Section:
Page:
06.27.2002
Book:
Section:
Page:
6
6.07
4
6
6.07
2

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