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NAVSO
P-3641: Navy Power Supply Reliability Design & Mfg
Guidelines

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3.3 Output Power Density
- Low Voltage
Nonstandard Components for Higher
Output Power Density

Selection and conservative
application of components in power supplies are
critical to ensuring a highly reliable design.
Maximum usage of military qualified, standard
components is recommended. Rapid advances in
power supply design technology and the
availability of state-of-the-art components have
resulted in making some of the standard
components obsolete. Military
qualification/standardization of new power
supply components has not kept pace with
switching-mode power supply design technology.
Qualifiable components for power supply
applications are available and their use will
increase both output power density and
reliability. Until such components are qualified
as military standard components, their use
requires the exercise of existing government
procedures for nonstandard component approval.
The use of nonstandard components in
switching-mode power supplies should not be
prohibited, provided there are at least two
independent sources and the quality level of
the nonstandard com