electronic component
Enable an AI agent to recognise an electronic component, assess its suitability and condition, and determine whether it may be handled, tested, installed, operated or replaced.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
Researched by: Codex + Grok
Purpose and description
Enable an AI agent to recognise an electronic component, assess its suitability and condition, and determine whether it may be handled, tested, installed, operated or replaced.
An electronic component is a discrete or packaged device that implements a specified electrical, semiconductor, optoelectronic, or board-level electromechanical circuit function and is intended to be mounted and interconnected in an assembly rather than to serve as a complete end-use product.
It can be Identify a component from markings, package features and documented electrical evidence.; Select and perform a bounded electrical test with suitable stimulus and handling precautions.; Evaluate operation against documented ratings and application conditions.; Check terminal mapping, polarity and footprint before installation.; Assess a proposed substitute against the requirements of a specific circuit role.; Decide whether to install, retest, remove or segregate a unit based on its condition and evidence..
Distinguishing features
The subject has a bounded electrical, electronic or optoelectronic role described through terminals, contacts or another specified interface; merely containing conductive material is insufficient.
Its intended use is incorporation into a larger assembly; an independently usable electronic appliance normally belongs to a neighbouring model.
Its identity can be constrained by electrical function and interface or package characteristics; a circuit symbol alone describes a role rather than establishing the identity of a physical component.
A PCB carrying several separately identifiable components is normally an assembly; treatment of integrated modules and hybrid packages requires an explicit boundary decision.
A manufacturer part designation describes a component type, whereas markings, measurements and damage observations can establish facts about a particular physical unit.
Scope
+ Component identity, functional class and manufacturer-specific variant
+ Electrical behaviour, terminal roles and conditions governing specified performance
+ Package, mounting interface, polarity and physical compatibility
+ Operating limits, handling sensitivities and component-level failure evidence
+ Suitability for a stated circuit role, including substitution and installation constraints
- Complete circuit design and assembly-level performance
- Printed circuit board routing, stack-up and manufacturing quality
- Firmware behaviour and software configuration beyond component interface requirements
- Manufacturing equipment and production-line control
- Commercial transactions, supplier organisations and inventory management
- System-level safety certification and disposal-process management
Characteristics
- Identity resolution
- unidentified | partially identified | identified | conflicting evidence Determines whether specifications can be attributed to the component with sufficient confidence.
- Component function
- Controlled functional class with subtype, such as resistor, capacitor, diode, transistor, integrated circuit or transducer Selects the relevant parameters, tests and interface expectations.
- Specified part variant
- Manufacturer, full ordering code, applicable revision and supporting documentation Separates variants that may differ in package, ratings, pin assignment or qualification.
- Electrical parameter value
- Parameter-specific units such as ohm, farad, henry, volt, ampere, hertz or second, with test conditions and specified or measured status Expresses the behaviour relevant to the component's circuit role.
- Tolerance or uncertainty
- Percent, absolute parameter units or an interval, distinguishing specification tolerance from measurement uncertainty Prevents nominal values from being treated as exact performance.
- Terminal assignment
- Mapping from physical terminal identifiers to electrical roles, referenced to a viewing orientation Supports correct connection and detects pin-incompatible substitutes.
- Package and mounting form
- Documented package designation and mounting form, with drawing reference where available Constrains footprint, assembly method and mechanical fit.
- Critical physical dimensions
- Millimetres with tolerances for body size, terminal pitch and relevant clearances Tests compatibility where package names or appearance are insufficient.
- Operating envelope
- Applicable voltage, current, power, temperature and timing limits, including dependencies and limit classifications Distinguishes supported operation from conditions that may damage the component.
- Handling sensitivity
- Documented electrostatic, moisture, thermal, mechanical or optical sensitivity; unknown where unsupported Determines necessary precautions during storage, testing and assembly.
- Observed condition
- untested | passes stated tests | degraded | failed | indeterminate, with observations and test scope Separates a limited test result from a general claim of serviceability.
- Application compatibility
- Candidate component linked to a specified circuit role, requirements and unresolved mismatches Makes suitability and substitution decisions specific to an intended use.
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 18 findings · 28 questions.
Component identity Establish what component type is represented and how confidently a physical unit is associated with it.
Similar markings and packages can conceal electrically different parts, so subsequent decisions depend on resolved identity.
Functional boundary
Locate the subject within component classes and distinguish it from an assembly.
Component role and boundary
Record the intended electrical role and the physical boundary treated as one component.
- What electrical or optoelectronic function makes this subject an electronic component? definition
- Is the subject one component, an integrated module or an assembly of separately modelled components? boundary
Part and unit evidence
Connect observed identification evidence to an exact documented variant.
Variant identification
Keep observed markings and inferred identity separate from verified manufacturer specifications.
- Which markings, package features or traceability records support the proposed manufacturer and full part designation? provenance
- Which document and revision establish the package, grade and ordering-code variant attributed to this unit? provenance
Electrical behaviour Describe the electrical function through relevant parameters, interfaces and conditional behaviour.
A component must be evaluated by how it behaves in a circuit, not merely by its name or nominal value.
Functional parameters
Capture the values and response characteristics needed for the intended role.
Parameter meaning and conditions
Associate each relevant value with its meaning, tolerance and conditions of validity.
- Which nominal values, transfer characteristics or switching behaviours define this component's intended function? definition
- At what temperature, frequency, bias and stimulus were these values specified or measured, and with what tolerance or uncertainty? measurement
Terminal behaviour
Describe electrical roles and requirements at the component's connections.
Connection semantics
Record polarity, supply, signal and unused-terminal requirements where applicable.
- What role does each terminal have, including polarity, supply references and terminals that must remain unconnected? definition
- What biasing, termination or power-sequencing conditions must the surrounding circuit provide? action
Package and installation Describe the physical and process interfaces through which the component joins an assembly.
Electrical suitability does not establish that a component fits, connects correctly or survives installation.
Physical interface
Establish package geometry, terminal numbering and orientation.
Footprint and orientation
Connect the physical package to an unambiguous mounting and terminal map.
- What body dimensions, terminal pitch and mounting features determine fit in the intended location? measurement
- Which drawing view and orientation marks establish terminal numbering and polarity? provenance
Assembly process constraints
Identify documented handling and attachment conditions relevant to this component.
Handling and attachment
Record precautions and process limits needed before and during mounting or removal.
- What documented electrostatic or moisture precautions apply to this package and its current exposure history? action
- What soldering, fastening or removal limits govern temperature, duration and mechanical loading? action
Operating limits and condition Relate operating stress and test evidence to the state of a physical component.
A correct part designation cannot establish that a particular unit remains usable under the proposed conditions.
Stress envelope
Distinguish supported operating conditions from damage limits and conditional restrictions.
Ratings and thermal dependencies
Keep recommended conditions, absolute maximum ratings and thermal assumptions distinguishable.
- Which limits describe recommended operation, absolute maxima or transient conditions, and what source supports each classification? boundary
- Under the intended voltage, current, duty cycle and cooling conditions, what temperature or dissipation estimate supports the operating decision? measurement
Unit condition evidence
Assess damage and functional state without extending evidence beyond the tests performed.
Observations and test coverage
Record inspection results, electrical measurements and the faults those observations can or cannot establish.
- What visible damage or measured deviation indicates an open circuit, short circuit, leakage, drift or other relevant failure mode? measurement
- Was testing performed in circuit or in isolation, and how do parallel paths or limited test conditions restrict the conclusion? boundary
Application and replacement Support installation and substitution decisions against a stated circuit requirement.
Interchangeability depends on the application, including behaviours not captured by a headline rating or package name.
Circuit role fit
Compare component capabilities with the demands placed on it by a specific circuit.
Requirements match
Identify required margins, interface conditions and application-sensitive characteristics.
- What function, operating range and performance limits must the component meet in this circuit location? definition
- Which measured or documented characteristics establish compliance, and which requirements remain unverified? measurement
Substitution decision
Evaluate a replacement as a conditional choice rather than a universal equivalence.
Replacement constraints
Record consequential differences and the validation required before accepting a substitute.
- Does the candidate differ in pin mapping, polarity, tolerance, parasitics, timing, thermal behaviour or other characteristics relevant to this application? boundary
- What additional checks or circuit changes are required before the candidate may be installed and energised? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Kinds and varieties
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Passive components (resistors, capacitors, inductors and networks)
- Discrete semiconductors (diodes, transistors, thyristors)
- Integrated circuits (analog, digital, mixed-signal and memory)
- Optoelectronic components (LEDs, photodiodes, laser diodes, optocouplers)
- Electromechanical board-level devices (relays, switches, solenoids)
- Connectors and interconnect (plugs, sockets, terminals)
- Frequency-control devices (quartz crystals, oscillators, resonators)
- Packaged power devices and power modules (bridge rectifiers, MOSFET/IGBT modules)
- Which of these kinds and varieties hold for the sense of electronic component this model covers, and on what evidence? provenance
Identifiers and schemes
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Wikidata - Q11653 - Item commonly sitelinked from the encyclopedic article 'electronic component'.
- Harmonized System (HS / HS6) - 8532, 8533, 8536 (in part), 8541, 8542 - Capacitors; resistors; connectors/switches/relays in part; semiconductor devices; electronic integrated circuits. Not a single heading for the whole class.
- NAICS - 3344 - Semiconductor and other electronic component manufacturing (United States).
- UNSPSC - 32xxxxx - Segment 32, Electronic Components and Supplies; commodity codes split by kind (e.g. semiconductors, passives, connectors).
- Manufacturer part number (MPN) - vendor-assigned alphanumeric string, often with packing suffix - The operational identifier in BOMs and distributor catalogues; must be paired with manufacturer name.
- JEDEC / industry type designation - registered device names (e.g. 1N4148, 2N2222, ATmega328P) and package codes (SOIC, BGA, 0805) - De-facto type identity for many semiconductors and chip passives; package codes are not unique part identifiers.
- GTIN / EAN / UPC - 8, 12, 13 or 14 digit GTIN - Used for retail-packaged and some distributor-packaged parts, not for bare die or most bulk OEM reels.
- Which of these identifiers and schemes hold for the sense of electronic component this model covers, and on what evidence? provenance
Standards and regulation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- IEC 60050 International Electrotechnical Vocabulary (International Electrotechnical Commission)
- IEC 60747 semiconductor devices; IEC 60115 fixed resistors; IEC 60384 fixed capacitors (IEC)
- IPC J-STD-001 Requirements for Soldered Electrical and Electronic Assemblies and IPC-A-610 Acceptability of Electronic Assemblies (IPC)
- JEDEC JESD22 reliability test methods and J-STD-020 moisture sensitivity (JEDEC, jointly with IPC for J-STD-020)
- Directive 2011/65/EU (RoHS) and Regulation (EC) No 1907/2006 (REACH) (European Union)
- Directive 2012/19/EU (WEEE) for electrical and electronic equipment that contains components (European Union)
- AEC-Q100 / Q101 / Q200 stress-qualification for integrated circuits, discrete semiconductors and passives (Automotive Electronics Council)
- UL component recognition (e.g. UL 746 plastics for components) and IEC 62368-1 for equipment in which components are used (UL; IEC)
- China RoHS (Management Methods for the Restriction of the Use of Hazardous Substances in Electrical and Electronic Products) (MIIT / China)
- Which of these standards and regulation hold for the sense of electronic component this model covers, and on what evidence? provenance
Real-world use
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Line items on a printed-circuit-board bill of materials, placed by surface-mount or through-hole processes in electronics manufacturing.
- Catalogue parts stocked by authorized distributors and identified by manufacturer plus MPN for design, prototype and production buys.
- Qualified into automotive ECUs, industrial controllers, medical devices and aerospace avionics under AEC, ISO and military/aerospace processes.
- Field-replaced as spare parts in repair, refurbishment and reverse logistics, including risk of counterfeit substitution.
- Declared in material-compliance and supply-chain filings (RoHS, REACH, conflict minerals) even when the end product is not itself a component.
- Which of these real-world use hold for the sense of electronic component this model covers, and on what evidence? provenance
Typical measurements
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Rated voltage - 6.3-1000 for common passives and semiconductors; higher for power and high-voltage parts - V
- Rated power dissipation - 0.001-100 for most discrete parts; modules higher - W
- Operating temperature (ambient or junction, as specified) - -55 to +150 for industrial/automotive grades; commercial often 0 to +70 - °C
- Resistance (resistors) - 0.001-1e8 - Ω
- Capacitance (capacitors) - 1e-12-1 (pF-class ceramics through supercapacitors) - F
- Package body size (chip and small-outline parts) - 0.4-50 - mm
- Moisture sensitivity level (MSL) - 1-6 - MSL
- Failure rate in service (mature silicon, FIT) - 1-100 - FIT (failures per 10^9 device-hours)
- Which of these typical measurements hold for the sense of electronic component this model covers, and on what evidence? provenance
Failure modes and hazards
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Electrical overstress, electrostatic discharge and latch-up destroying semiconductors.
- Thermal runaway, inadequate heatsinking, and moisture-induced 'popcorning' or delamination during solder reflow.
- Dielectric breakdown, electrolytic capacitor dry-out, venting or ignition; shorted energy-storage capacitors as a shock and fire source.
- Solder-joint fatigue, pad cratering, tin whiskers and conductive anodic filament growth causing intermittent or hard shorts.
- Counterfeit, relabelled or recovered parts entering the supply chain with unknown pedigree and reliability.
- Restricted hazardous substances (lead, cadmium, hexavalent chromium, certain brominated flame retardants, phthalates) in non-compliant parts.
- Which of these failure modes and hazards hold for the sense of electronic component this model covers, and on what evidence? provenance
Regional variation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Chip-passive outlines are named in inch EIA codes (e.g. 0805) in much of North American commerce and in metric IEC codes (e.g. 2012) in IEC-centric documents; they refer to the same footprints.
- Japan still uses JIS C series designations alongside IEC/EN numbering for many passives; post-Soviet catalogues may still show GOST type codes.
- Market-access practice is CE/RoHS/REACH-centric in Europe, UL/CSA-centric in North America, and CCC plus China RoHS in China, even when the component is electrically identical.
- Through-hole colour-coded resistors remain common in education and some repair markets; high-volume manufacturing worldwide is surface-mount.
- Which of these regional variation hold for the sense of electronic component this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Bare printed circuit board - A substrate and interconnect structure with no specified circuit-element function until populated; a component is the placed functional device.
- Electronic assembly / printed-circuit-board assembly (PCBA) - An interconnected composition of multiple components; the test is whether the object is already a populated circuit rather than a single catalogue device.
- Electrical equipment or apparatus - A complete end-use product that performs a user-facing function (IEC 60050 equipment); a component is only a circuit element inside such a product.
- Electronic module or multi-chip module - A higher-level packaged subassembly that itself contains multiple components or a hybrid substrate; distinguished by internal composition rather than a single device function.
- Electrical machine or equipment-scale transformer - A complete energy-conversion apparatus; small magnetics on a board are components, while motors and power transformers are equipment.
- Mechanical fastener or purely structural part - No defined electrical circuit function in the bill of materials; the test is whether the part is specified by an electrical rating or only by mechanical fit.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of electronic component this model covers, and on what evidence? provenance
Sources
- International Electrotechnical Vocabulary, IEC 60050 (International Electrotechnical Commission) - Specialist distinction between component, device, equipment and assembly, and the electrical/electronic vocabulary used in the definition and neighbours.
- IEC 60747, Semiconductor devices (International Electrotechnical Commission) - Classification and rating practice for discrete semiconductors as a distinct kind of electronic component.
- IPC-A-610, Acceptability of Electronic Assemblies (IPC) - How components are actually encountered on printed-circuit assemblies, including mounting, solder joints and workmanship failure modes.
- Directive 2011/65/EU (RoHS) on the restriction of certain hazardous substances in electrical and electronic equipment (European Union) - Substance restrictions, regional compliance practice, and hazardous-substance failure/legal risk for components placed on the EU market.
- JEDEC reliability and package standards, including JESD22 test methods and moisture-sensitivity classification (JEDEC Solid State Technology Association) - Package, moisture-sensitivity, ESD and reliability measurements used for semiconductors and many other surface-mount components.
What the second pass must settle
- Where does the registry place the boundary between electronic components, connectors, electromechanical parts, integrated modules and board assemblies?
- Should component types and individual physical units use separate linked models or explicit modes within this model?
- Which component-family extensions are needed to capture specialised parameters without making every component carry irrelevant requirements?
- What evidence threshold should permit an identification, authenticity assessment or serviceability decision when markings, traceability or manufacturer documentation are incomplete?
- Which application-specific rules should govern operating margins and substitute acceptance, and how should unresolved requirements prevent premature approval?