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MIL-specs for
microwaves
Updated July 7,
2005
On this page we are compiling
a list of appropriate MIL-specifications for your military microwave
designs. See something that is missing? Shoot
it in! Anyone who wants to write a "review" of any
of these documents, please help us out. For now we are quoting what
the Defense Supply Center Columbus says about each document.
Attention commercial microwave
dudes... get lost, this page is not for you!
All of these military documents
can be downloaded
here, courtesy of Uncle Sam!
Components for hybrids and circuit
boards
MIL-PRF-55681,
Capacitor, Chip, Multiple Layer, Fixed, Ceramic Dielectric, Established
Reliability and Non-Established Reliability, General Specification
"This specification covers
the general requirements for non-established reliability (non-ER)
and established reliability (ER), ceramic dielectric, multiple
layer, chip capacitors. ER capacitors covered by this specification
have failure rate levels (FRL) ranging from 1.0 percent to 0.001
percent per 1,000 hours. These FRLs are established at a 90-percent
confidence level and maintained at a 10-percent producer's risk
and are based on life tests performed at maximum rated voltage
at maximum rated temperature. An acceleration factor of 8:1 has
been used to relate life test data obtained at 200 percent of
rated voltage at maximum rated temperature, to rated voltage at
rated temperature."
MIL-PRF-55365,
Capacitor, Fixed, Electrolytic (Tantalum), Chip, Nonestablished
Reliability, Established Reliability, General Specification
"This specification covers
the general requirements for nonestablished reliability (non-ER)
and established reliability (ER), tantalum dielectric, fixed chip
capacitors, primarily intended for use in thick and thin film
hybrid circuits or surface mount applications for filter, bypass,
coupling, and other applications where the alternating current
(ac) component is small compared to the direct current (dc), rated
voltage and where supplemental moisture protection is available.
The established reliability capacitors have reliability ratings
established on the basis of life tests performed at specified
voltage at +85°C for failure rate levels (FRL) ranging from:
- 1.0 percent per 1,000 hours
to 0.001 percent per 1,000 hours in accordance with MIL-STD-690.
These FRL's are established at a 60-percent confidence level
and are maintained at a 10- percent producer's risk (exponential
distribution).
- 0.1 percent per 1,000 hours
to 0.0001 percent per 1,000 hours at 90-percent confidence level
(Weibull distribution)."
MIL-C-83446B:
Coils, Chip, Fixed or Variable, General Specification
"This specification covers
the general requirements for fixed or variable chip coils primarily
intended for incorporation into hybrid microelectronic circuits.
Procurement of chip coils of a specific design will require additional
data in the form of specification sheets, giving detailed electrical
and mechanical requirements, tolerances, and applicable additions
and exceptions to the general requirements and tests specified
herein."
MIL-PRF-55342,
Performance Specification, Resistors, Fixed, Film, Chip, Nonestablished
Reliability, Established Reliability, Space Level, General Specification
"This specification covers
the general requirements for nonestablished reliability (non-ER),
established reliability (ER), and space level, fixed, film, chip
resistors primarily intended for incorporation into surface mount
applications. These resistors have a high degree of stability
with respect to time under normal conditions. ER resistors covered
by this specification have life failure rates (FR) ranging from
1 percent to 0.001 percent per 1,000 hours. These FRs are established
at 60 percent confidence on the basis of life tests. Table I provides
a summary of performance characteristics for these resistors."
Hybrid specifications
MIL-PRF-38534,
Hybrid Microcircuits, General Specification
"This specification establishes
the general performance requirements for hybrid microcircuits,
Multi-Chip Modules (MCM) and similar devices and the verification
requirements for insuring that these devices meet the applicable
performance requirements. Verification is accomplished through
the use of one of two quality programs (Appendix A). The main
body of this specification describes the performance requirements
and the requirements for obtaining a Qualified Manufacturers List
(QML) listing. The appendices of this specification are intended
for guidance to aid a manufacturer in developing their verification
program. Detail requirements, specific characteristics, and other
provisions which are sensitive to the particular intended use
shall be specified in the applicable device acquisition specification."
Test methods
MIL-STD-883,
Test Method Standard, Microcircuits
"This standard establishes
uniform methods, controls, and procedures for testing microelectronic
devices suitable for use within Military and Aerospace electronic
systems including basic environmental tests to determine resistance
to deleterious effects of natural elements and conditions surrounding
military and space operations; mechanical and electrical tests;
workmanship and training procedures; and such other controls and
constraints as have been deemed necessary to ensure a uniform
level of quality and reliability suitable to the intended applications
of those devices. For the purpose of this standard, the term "devices"
includes such items as monolithic, multichip, film and hybrid
microcircuits, microcircuit arrays, and the elements from which
the circuits and arrays are formed. This standard is intended
to apply only to microelectronic devices."
MIL-STD-202,
Test Method Standard, Electronic and Electrical Component Parts
"This standard establishes
uniform methods for testing electronic and electrical component
parts, including basic environmental tests to determine resistance
to deleterious effects of natural elements and conditions surrounding
military operations, and physical and electrical tests. For the
purpose of this standard, the term "component parts"
includes such items as capacitors, resistors, switches, relays,
transformers, and jacks. This standard is intended to apply only
to small parts such as transformers and inductors, weighing up
to 300 pounds or having a root mean square test voltage up to
50,000 volts unless otherwise specifically invoked."
Electro-static discharge control:
MIL-STD-1686 , MIL-HDBK-263
Marking: MIL-STD 129, MIL-STD-130
Waveguide parts
MIL-DTL-85,
Waveguides, Rigid, Rectangular General Specification, Rectangular
"This specification covers
the performance requirements for seamless or fabricated rigid
waveguides with rectangular inside configurations. Waveguides
covered by this specification are intended for use as transmission
lines in military service radio and electronic equipment. For
Naval applications, magnesium waveguides are for aeronautical
use only. The waveguides herein specified must function in and
withstand for prolonged periods worldwide military unique environments.
These waveguides are military unique because the technology was
pioneered by the military, and these devices are required for
compatibility of form, fit and function with the many devices
currently fielded. These devices are used because expensive changes
to application systems would be required, if other than these
standard military components were used. This specification is
also subject to terms of international standardization agreement."
MIL-DTL-287,
Waveguide Assemblies, Flexible, Twistable and Nontwistable, General
Specification
"This specification covers
the general requirements for twistable and nontwistable, flexible
waveguide assemblies. Twistable and nontwistable, flexible waveguide
assemblies are intended for operation in the microwave region
of the spectrum, to facilitate complex installations, provide
for misalignments, and permit relative motion between connected
components. They have satisfactory electrical as well as mechanical
characteristics to supplement rigid wave-guide assemblies."
MIL-DTL-3922,
Flanges, Waveguide, General Purpose, General Specification
"This specification covers
the general requirements for general purpose waveguide flanges
that are used to couple mechanically and electrically two sections
of waveguides or waveguide parts."
MIL-DTL-23351,
Waveguides, Single Ridge and Double Ridge, General Specification
"This specification covers
the requirements for rigid waveguides with single ridge or double
ridge inside configurations. Waveguides covered by this specification
are intended for use as transmission lines in military services
radio and electronic equipment."
MIL-DTL-23641 coax/waveguide
adaptors
Coax cable specifications
MIL-C-17,
Cables, Radio Frequency, Flexible and Semirigid, General Specification
"This specification covers
flexible and semirigid cables with solid and semisolid dielectric
cores, with single, dual, and twin inner conductors. Cables covered
by this specification are primarily intended for use as transmission
lines to conduct energy in a simple power transfer continuously
or intermittently. In general, these cables are designed for low-loss,
stable operation from the relatively low frequencies through the
higher frequencies in the microwave and radar regions of the frequency
spectrum. Cables may also be used as circuit elements, delay lines,
or impedance matching devices."
Wire
MIL-DTL-16878, Wire,
Electrical, Insulated, General Specification for
"This specification covers
unshielded wire for hookup and lead wiring of electrical and electronic
components and equipment so that minimum size and weight are consistent
with service requirements. The temperature rating of wire included
in this specification ranges to a maximum of 260 degrees Celsius
(°C), with potential rating from 250 to 5000 volts root mean
square (Vrms). The single conductor wire covered in this specification
is intended for use in lead wire and internal wiring of electrical
and electronic equipment and switchboards."
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