MIL-HDBK-454 Military Handbook: General Guidelines for Electronic Equipment
The standard "MIL-HDBK-454 Military manual: General guidelines for electronic equipment" developed by the United States Department of Defense covers general guidelines to be used in military specifications for electronic equipment. This standard replaces the previously published standard "MIL-STD 454N Military standard: Standard general requirements for electronic equipment". This standard covers general guidelines to be used in military specifications for electronic equipment.
For the purposes of this standard, the following definitions apply:
- Battleshort is a switch used to bypass normal lockouts on mission-critical equipment during combat conditions (e.g. equipment that should not be shut down or whose mission function will fail).
- A chassis is a structural part manufactured in this way to facilitate the assembly and interconnection of electrical or electronic elements in order to provide a base for electrical or electronic circuits. It normally has drilled or stamped holes to accommodate elements but may contain only the parts necessary for its assembly and support.
- Commercial off-the-shelf equipment is equipment that can be purchased from commercial retail or wholesale distributors as is (e.g., equipment available as a cataloged part) or with only minor modifications that do not alter its form, fit, or functional characteristics.
- A frame is any structural system designed, assembled and fastened to mount or support electrical or electronic components or units.
- Fail-safe is a design feature that allows a part, unit, or equipment to fail only in a non-hazardous mode.
- An interlock is an automatic switch that removes all power from equipment when an access door, cover or plate is removed.
- A bypassable interlock is an automatic switch with a manually operated electrical bypass device to allow equipment maintenance operations on energized equipment.
- Leakage current is the current that flows through the conductive paths of equipment to a solidly grounded source.
In this standard, general guidelines for electronic equipment are grouped under the following headings:
- Guide 1 Safety design criteria - Personnel hazards
- Guide 2 Capacitors
- Guide 3 Flammability
- Guide 4 Fungus inert materials
- Guide 5 Soldering
- Guide 6 Bearings
- Guide 7 Interchangeability
- Manual 8 Electrical overload protection
- Guide 9 Craftsmanship
- Manual 10 Electrical connectors
- Guide 11 Insulating materials, electrical
- Guide 12 Fastener hardware
- Guide 13 Structural welding
- Guide 14 Transformers, inductors and coils
- Guide 15 Metals, corrosion resistance
- Guide 16 Different metals
- Guide 17 Printed wiring
- Guide 18 Rating of electronic parts and materials
- Guide 19 Terminations
- Manual 20 Cable, connection, internal
- Guide 21 Castings
- Guide 22 Parts management
- Guide 23 Adhesives
- Guide 24 Sources, resistance, electrical connections
- Guide 25 Electric power
- Guide 26 Arc resistant materials
- Manual 27 Batteries
- Guide 28 Controls
- Guide 29 Electron tubes
- Guide 30 Semiconductor devices
- Guide 31 Moisture pockets
- Guideline 32 Test provisions
- Guide 33 Resistors
- Guide 34 Naming
- Guide 35 Reliability
- Guide 36 Accessibility
- Guide 37 Circuit breakers
- Guide 38 Quartz crystals and oscillator units
- Guide 39 Fuses and fuse holders
- Guide 40 Shunts
- Guide 41 Springs
- Manual 42 Adjustment dial mechanisms
- Guide 43 Lubricants
- Guideline 44 Fibrous materials, organic
- Guide 45 Corona and electrical fault prevention
- Guide 46 Motors and rotary power converters
- Guide 47 Encapsulation and potting
- Guide 48 Gears
- Manual 49 Hydraulics
- Manual 50 Indicator lights
- Guide 51 Meters, electrical indicator
- Guide 52 Thermal design
- Guide 53 Waveguides and related devices
- Guide 54 Ease of maintenance
- Guide 55 Enclosures
- Manual 56 Rotary servo devices
- Guide 57 Relays
- Guide 58 Keys
- Guide 59 Soldering
- Manual 60 Sockets and accessories
- Guide 61 Electromagnetic interference control
- Guide 62 Human engineering
- Guide 63 Special vehicles
- Guide 64 Microelectronic devices
- Guide 65 Cable, coaxial (RF)
- Guide 66 Cable, multi-conductor
- Guide 67 Marking
- Guide 68 Readings and indicators
- Guide 69 Internal wiring practices
- Manual 70 Electrical filters
- Manual 71 Cable and wire, connection
- Guideline 72 Substitutability
- Manual 73 Standard electronic modules
- Guide 74 Grounding, bonding and shielding
- Guide 75 Electrostatic discharge control
- Guide 76 Fiber optic
- Guide 77 Integrated diagnostics
- Guide 78 Manufacturability
- Manual 79 Intermittent fault diagnosis
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