Forensic Analysis of Electronic Components Using Tiered Inspection

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Solution Overview

Problem

Current methods for detecting counterfeit electronic components are inadequate in terms of reliability, cost-effectiveness, and turnaround time, as they often rely on non-destructive external inspections that are limited in reliability and may not account for manufacturing process variations.

Innovation Solution

A tiered physical inspection forensic methodology that extracts quantifiable intrinsic manufacturer-specific process signatures from electronic components using a range of techniques from light optical microscopy to transmission electron microscopy, allowing for the comparison of authentic and suspect components to determine authenticity with high confidence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If non-destructive external inspection methods are used, then the component remains intact and inspection cost is low, but the detection reliability is limited

Engineering Contradiction:
Improvecounterfeit detection reliabilityVSAvoidinspection methodology complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The inspection methodology is divided into multiple tiers or levels, starting with non-destructive external inspections and progressing to more invasive internal inspections if needed. This segmentation allows the system to achieve high reliability by combining multiple inspection depths while managing complexity through a structured hierarchical approach.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs nested inspection approaches where external inspections contain internal inspections, which in turn contain die-level inspections. Each tier is nested within the previous one, allowing progressive deepening of inspection only when necessary, thereby achieving high reliability without always incurring the maximum complexity and cost.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If internal die analysis is performed, then detection reliability improves, but the inspection process becomes more time-consuming and costly

Engineering Contradiction:
Improvecounterfeit detection reliabilityVSAvoidinspection turnaround time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The inspection methodology is made dynamic and adaptive, adjusting the depth and type of inspection based on risk assessment, component criticality, and preliminary inspection results. This allows the system to achieve high reliability for critical components while maintaining faster turnaround for lower-risk components, optimizing the time-reliability tradeoff.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Different inspection depths and methodologies are applied to different components or different regions of components based on their specific risk profiles and criticality. High-risk or critical components receive comprehensive internal die analysis, while lower-risk components undergo only external inspection, thereby achieving high overall reliability without uniformly increasing inspection time for all components.

Inventive Principle:
Principle #3Local quality

3Reliability

If comprehensive internal inspection methods are used, then detection reliability increases, but the cost-effectiveness decreases

Engineering Contradiction:
Improvecounterfeit detection reliabilityVSAvoidcost-effectiveness
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent applies partial inspection strategies where not all components undergo the most comprehensive and expensive inspection methods. Instead, inspection depth is tailored to match the actual risk and criticality, applying full internal die analysis only when necessary. This partial action approach achieves high reliability for the inspection population as a whole while maintaining cost-effectiveness by avoiding unnecessary comprehensive inspections on low-risk components.

Inventive Principle:
Principle #16Partial or excessive action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach provides a reliable, cost-effective, and high-throughput method for detecting counterfeit components, balancing the need for reliability, cost, and turnaround time, with a confidence level exceeding 99.7% in differentiating between authentic and counterfeit parts.

Implementation Method 1

light optical microscopy to transmission electron microscopy

Methodology Applied
Scientific EffectLight optical microscopy: Light

Implementation Method 2

light optical microscopy to transmission electron microscopy

Methodology Applied
Scientific EffectTransmission electron microscopy: Electron Beam

Data Source

PatentUS10482473B2Method for forensic analysis of electronic components
Publication Date: 2019.11.19 FABMETRIX INC
  • US10482473B2 patent drawing
  • US10482473B2 patent drawing
  • US10482473B2 patent drawing

AI summary

A physical inspection forensic methodology with an inherent reliable fallback option based on the extraction of quantifiable intrinsic manufacturer-specific process signatures present superficially and/or within the electronic component. The methodology will seek to extract such signatures cost-effectively through a tiered application of the most expedited and least intrusive approaches.