---
title: "Test Fixture"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:TEST_FIXTURE"
  data_integrity_hash: "df9ec4c42d501f290c0352296869131c"
  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:TEST_FIXTURE"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/test-fixture.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/test-fixture"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-150 N clamping force, ±0.05 mm positioning accuracy, -40°C to +85°C temperature range"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 200
    unit: "N"
    consequence: "Yield strength of 6061-T6 aluminum (276 MPa) exceeded, thermal expansion coefficient mismatch (23.6 μm/m·K for aluminum vs 2.6 μm/m·K for ceramic components), contact resistance heating (P=I²R)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Electrostatic discharge (ESD) event exceeding 8 kV HBM"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "ESD-protective surface coating with surface resistivity &lt;10⁹ Ω/sq, Faraday cage enclosure"
  - node_2:
      trigger: "Cyclic mechanical loading at 5 Hz with 120 N amplitude"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Finite element analysis-optimized radius of 3 mm, shot peening to induce compressive residual stress of -400 MPa"
bom_nodes:
  fixture-base-plate:
    type: "component"
    urn: "URN:CNFX:ME:FIXTURE_BASE_PLATE"
    interface_type: "physical-logic-coupled"
  contact-probes:
    type: "component"
    urn: "URN:CNFX:ME:CONTACT_PROBES"
    interface_type: "physical-logic-coupled"
  clamping-mechanism:
    type: "part"
    urn: "URN:CNFX:ME:CLAMPING_MECHANISM"
    interface_type: "physical-logic-coupled"
  interface-connector:
    type: "component"
    urn: "URN:CNFX:ME:INTERFACE_CONNECTOR"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/test-fixture.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "f3db4c9f8a4c31af96574ee77d58f0f31369a604bd5538ae75b15464f88b209a"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Test Fixture

## 1. Technical Definition
A specialized holding device used to secure and position electrical components during testing procedures.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-150 N clamping force, ±0.05 mm positioning accuracy, -40°C to +85°C temperature range**. Failure boundary: **Clamping force exceeds 200 N causing plastic deformation, positioning error exceeds ±0.1 mm, temperature exceeds 125°C**, Mechanism: **Yield strength of 6061-T6 aluminum (276 MPa) exceeded, thermal expansion coefficient mismatch (23.6 μm/m·K for aluminum vs 2.6 μm/m·K for ceramic components), contact resistance heating (P=I²R)**.

### 2.1 Analytical Physics Model
Governed by the **Combined Measurement Uncertainty**:

> **Primary Equation**: $u_c = \sqrt{\sum u_i^2}$  
> **Engineering Impact**: Defines the precision confidence interval for inspection.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| u_i | Standard Uncertainty components | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Electrostatic discharge (ESD) event exceeding 8 kV HBM | 8 | Dielectric breakdown of test socket insulation | ESD-protective surface coating with surface resistivity &lt;10⁹ Ω/sq, Faraday cage enclosure |
| Cyclic mechanical loading at 5 Hz with 120 N amplitude | 8 | Fatigue crack initiation at clamping arm fillet radius | Finite element analysis-optimized radius of 3 mm, shot peening to induce compressive residual stress of -400 MPa |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Clamping Mechanism](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/clamping-mechanism.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Automated Test Equipment (ATE)**, **Environmental Test Chamber**, **Precision Positioning System**  
**Downstream Applications**: Printed Circuit Boards (PCBs), Semiconductor Devices, Electronic Assemblies  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are used in this test fixture?
**A**: This test fixture is constructed from durable aluminum alloy and stainless steel for structural components, copper alloy contacts for electrical conductivity, and insulating polymers to prevent electrical interference.

### Q: What components are included in the test fixture BOM?
**A**: The bill of materials includes a clamping mechanism for secure component positioning, contact probes for electrical testing, a fixture base plate for stability, and an interface connector for system integration.

### Q: What industries use this type of test fixture?
**A**: This test fixture is designed for computer, electronic, and optical product manufacturing industries where precise electrical component testing is required during production and quality control processes.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Test Fixture](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/test-fixture)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: TEST_FIXTURE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: adb608de
