--- type: "product_component" title: "Surface Mount Resistor" industry: "Electronic Component Manufacturing" verification_protocol: urn: "URN:CNFX:ME:SURFACE_MOUNT_RESISTOR" data_integrity_hash: "c22be0719e350d0a5c2ef4b1ce0da635" source_authority: "https://cnfx.com" strict_mode: true source_identity: provider: "CNFX Industrial Knowledge Graph" index_version: "2026.Q1-Universal" authority_id: "URN:CNFX:ME:SURFACE_MOUNT_RESISTOR" data_source_uri: "https://cnfx.com/llms/industry/electronic-component-manufacturing/product/surface-mount-resistor.md" official_resource_url: "https://cnfx.com/industry/electronic-component-manufacturing/product/surface-mount-resistor" is_verified_logic: true attributes: resistance_value: status: "verified" value: "1 Ω – 10 MΩ" unit: "Ω" tolerance: status: "verified" value: "±0.1%, ±0.5%, ±1%, ±5" unit: "%" power_rating: status: "verified" value: "0.05 – 0.5" unit: "W" case_size_code: status: "verified" value: "0201, 0402, 0603, 0805, 1206, 1210, 2010, 2512" unit: "" temperature_coefficient: status: "verified" value: "±50, ±100, ±200" unit: "ppm/°C" maximum_working_voltage: status: "verified" value: "25 – 200" unit: "V" operating_temperature_range: status: "verified" value: "-55–+155" unit: "°C" insulation_resistance: status: "verified" value: "≥ 10^9" unit: "Ω" dielectric_withstanding_voltage: status: "verified" value: "100 – 300" unit: "V" resistance_to_soldering_heat: status: "verified" value: "260°C for 10 s" unit: "°C/s" weight: status: "verified" value: "0.02 – 0.2" unit: "g" engineering_limits: max_safe_operating_point: value: 175 unit: "°C" consequence: "Resistance drift, open/short failure or solder-joint intermittency can result from steady or pulse overload, excessive element voltage, poor heat removal, board flex, thermal cycling, corrosion or sulfur exposure, termination damage and an incompatible soldering process." fmea_matrix_quantitative: - node_1: trigger: "Continuous or pulse load, limiting voltage, ambient/board temperature or corrosive exposure outside the selected series rating." severity: 8 occurrence: 3 detection: 4 mitigation_protocol: "Apply datasheet derating and pulse curves, verify PCB thermal conditions and voltage stress, select the required sulfur/moisture qualification and test the actual duty profile." - node_2: trigger: "Board flex, land-pattern mismatch, thermal-expansion cycling, placement damage or solder profile outside the manufacturer process window." severity: 8 occurrence: 3 detection: 4 mitigation_protocol: "Use the manufacturer land pattern and solder profile, control board strain and placement force, and inspect joints after representative thermal/mechanical testing." bom_nodes: ceramic-substrate: type: "component" llms_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/component/ceramic-substrate.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:CERAMIC_SUBSTRATE" urn: "URN:CNFX:ME:UNIT:CERAMIC_SUBSTRATE" interface_type: "physical-logic-coupled" is_migrated_part: true resistive-element: type: "component" llms_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/component/resistive-element.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:RESISTIVE_ELEMENT" urn: "URN:CNFX:ME:UNIT:RESISTIVE_ELEMENT" interface_type: "physical-logic-coupled" is_migrated_part: true termination-electrodes: type: "component" llms_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/component/termination-electrodes.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:TERMINATION_ELECTRODES" urn: "URN:CNFX:ME:UNIT:TERMINATION_ELECTRODES" interface_type: "physical-logic-coupled" is_migrated_part: true protective-coating: type: "component" llms_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/component/protective-coating.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:PROTECTIVE_COATING" urn: "URN:CNFX:ME:UNIT:PROTECTIVE_COATING" interface_type: "physical-logic-coupled" is_migrated_part: true marking-ink: type: "component" llms_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/component/marking-ink.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:MARKING_INK" urn: "URN:CNFX:ME:UNIT:MARKING_INK" interface_type: "physical-logic-coupled" is_migrated_part: true manufacturing_compliance: url: "https://cnfx.com/llms/industry/electronic-component-manufacturing/product/surface-mount-resistor.md" on_chain_sovereignty: contract_standard: "ERC-721-Industrial" metadata_hash: "ab46c5b06b172e31153485dab6019fbb7ab185c0a59ad706ad76f4aa54bb9b53" royalty_logic: "IPFS-CID-REQUIRED" mint_status: "logic-verified-ready" rag_vector_index: semantic_queries: - "Surface Mount Resistor" - "surface mount resistor" - "SMD resistor" - "chip resistor" - "IEC 60115-8" - "EIA-481" - "Surface Mount Resistor in Electronic Component Manufacturing" - "China Surface Mount Resistor manufacturer" - "Surface Mount Resistor supplier China" - "Surface Mount Resistor resistance_value" - "Surface Mount Resistor tolerance" - "Surface Mount Resistor power_rating" version: "3.3.5-EXTREME-SOVEREIGN-WEB3" --- # Industrial Specification: Surface Mount Resistor ## 1. Technical Definition Passive electronic component for current limiting and voltage division in circuits ## 2. Engineering Reasoning & Causal Matrix > **Operational Intelligence**: Designed for **Keep resistance, tolerance, TCR, rated dissipation, film/body temperature, limiting voltage, pulse energy, temperature range and derating attached to one part number, PCB layout and operation mode.**. Failure boundary: **There is no family-wide 175 °C junction limit, 2.5 kV/mm dielectric limit, 150% power/10 ms limit or 10^6 A/cm² electromigration boundary. Fixed resistors are not described by one semiconductor junction temperature; limits come from the chosen construction and manufacturer curves.**, Mechanism: **Resistance drift, open/short failure or solder-joint intermittency can result from steady or pulse overload, excessive element voltage, poor heat removal, board flex, thermal cycling, corrosion or sulfur exposure, termination damage and an incompatible soldering process.**. ### 2.2 FMEA (Failure Mode & Effects Analysis) | Event Trigger | Severity | Failure Mode | Mitigation Strategy | | :--- | :--- | :--- | :--- | | Continuous or pulse load, limiting voltage, ambient/board temperature or corrosive exposure outside the selected series rating. | 8 | Resistance drift or open/short electrical failure | Apply datasheet derating and pulse curves, verify PCB thermal conditions and voltage stress, select the required sulfur/moisture qualification and test the actual duty profile. | | Board flex, land-pattern mismatch, thermal-expansion cycling, placement damage or solder profile outside the manufacturer process window. | 8 | Cracked body/termination or intermittent solder joint | Use the manufacturer land pattern and solder profile, control board strain and placement force, and inspect joints after representative thermal/mechanical testing. | ## 3. Key Technical Parameters | Parameter | Value | Unit | Status | | :--- | :--- | :--- | :--- | | Resistance Value | 1 Ω – 10 MΩ | Ω | Verified | | Tolerance | ±0.1%, ±0.5%, ±1%, ±5 | % | Verified | | Power Rating | 0.05 – 0.5 | W | Verified | | Case Size Code | 0201, 0402, 0603, 0805, 1206, 1210, 2010, 2512 | | Verified | | Temperature Coefficient | ±50, ±100, ±200 | ppm/°C | Verified | | Maximum Working Voltage | 25 – 200 | V | Verified | | Operating Temperature Range | -55–+155 | °C | Verified | | Insulation Resistance | ≥ 10^9 | Ω | Verified | | Dielectric Withstanding Voltage | 100 – 300 | V | Verified | | Resistance to Soldering Heat | 260°C for 10 s | °C/s | Verified | | Weight | 0.02 – 0.2 | g | Verified | ## 4. System BOM & Knowledge Routing ### Core Components (Recursive Links) ### Industrial DNA Context (De-duplicated) **Complementary Dependencies**: **Screen Printer**, **Reflow Oven**, **Pick-and-Place Machine** **Downstream Applications**: Printed Circuit Boards, Consumer Electronics, Automotive Control Modules ## 5. Engineering Risks & FAQ - **Caution**: - **Caution**: - **Caution**: ### Q: What do 0201, 0402 and 0603 mean? **A**: They are case-size codes used by component catalogs; they are not millimetre values. The actual length, width, height, termination and recommended land pattern must be taken from the selected manufacturer package drawing. EIA-481 addresses carrier-tape/reel packaging for automated handling. ### Q: Does IEC 60115-8 set one resistance range and tolerance list? **A**: IEC 60115-8:2023 is a sectional specification for fixed surface-mount resistors. It provides preferred characteristics, assessment procedures, tests and general requirements, but the available resistance, tolerance, TCR, power and voltage still come from the product technology, classification and detail specification for the chosen series. ### Q: How should power and voltage be selected? **A**: Calculate steady and transient dissipation, apply the manufacturer derating curve, and check limiting element voltage, overload and pulse curves. Board land pattern, copper area, ambient temperature and airflow can change the permissible dissipation; a case-size label alone is insufficient. ### Q: How is assembly compatibility verified? **A**: Confirm termination finish, moisture sensitivity or storage controls where applicable, packaging, pick-and-place geometry, recommended land pattern and the manufacturer soldering profile. Use the applicable IEC 60068-2-58 test conditions only when the exact severity and acceptance criteria are specified. ## 6. Manufacturing Compliance --- ### 🛠️ Engineering Resource Access 🔗 **[Full Specification: Surface Mount Resistor](https://cnfx.com/industry/electronic-component-manufacturing/product/surface-mount-resistor)** ### 🌐 Knowledge Graph Topology > **Node Status**: Verified Engineering Spec > **Connectivity**: Linked to **5** standalone system nodes > **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph > **Reference ID**: SURFACE_MOUNT_RESISTOR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 01e53ae3