Quality Lab
Testing Protocols Built For Traceable Quality.
South Electronics applies structured inspection workflows to high-risk and high-value components so customers have clearer evidence behind authenticity, condition, and usability decisions.
Component Testing Matrix
The original protocol matrix behind this page covers the major passive, discrete, and semiconductor categories that typically need stronger counterfeit mitigation and incoming inspection support. We rebuilt that framework here to match South Electronics’ current site experience while preserving the core testing structure.
Our process begins with the least destructive steps first, then escalates to X-ray, cross-section, decapsulation, and electrical validation when the component type and risk profile justify deeper analysis.
How We Use It
These protocols support quality review, suspect-part triage, incoming inspection, and evidence gathering for customers who need more than a visual spot check before material goes to the floor.
Protocol Matrix
At-A-Glance Coverage
Representative coverage only. The exact path still depends on device family, package, and risk profile.
Core Inspection Layers
Layer 01
External Inspection
Markings and physical structure are reviewed first. Where ink marking is present, solvent-assisted checks help expose suspicious remarking or inconsistent finishing.
Layer 02
2D X-Ray Imaging
X-ray inspection is used to compare internal geometry, layer count, die size, leadframe design, polarity, and other internal construction details against expected patterns.
Layer 03
Electrical Measurement
Where appropriate, gross electrical errors, continuity, or functional behavior are checked to screen obvious mismatches before deeper destructive analysis.
Layer 04
Destructive Analysis
Cross-section and decapsulation are reserved for part families where internal coating quality, metallization, die identity, or bond pattern verification is required.
Protocols
Testing Coverage By Component Type
The original testing page groups protocols by device family. We preserved that structure below, but reshaped it into responsive cards so the content stays readable on desktop and mobile.
Resistor
- External inspection for markings and physical structure, including acetone-assisted remarking checks.
- 2D X-ray imaging to confirm shape, size, and internal consistency.
- Electrical measurement for gross-error screening.
Capacitor
- External inspection and electrical measurement as a first pass.
- 2D X-ray review for tantalum slug geometry, polarity, terminal design, and joint quality.
- MLCC-specific layer-count review and cross-section checks for plating and electrode spacing.
Inductor
- External inspection for markings and structure.
- 2D X-ray inspection to confirm internal component layout consistency.
Diode
- External inspection for physical structure and remarking indicators.
- 2D X-ray imaging to confirm package geometry and polarity cues.
- Decapsulation for internal element verification when risk justifies it.
LED
- External inspection focused on case quality, die size, and wirebonding consistency.
- Wavelength inspection where spectral confirmation is required.
- 2D X-ray inspection to confirm die and wirebond structure.
Crystal / TCXO
- External inspection for markings and package integrity.
- 2D X-ray review of internal physical structure and component placement.
- Decapsulation for internal circuitry and component verification when escalation is needed.
Transistor / MOSFET
- External inspection for package quality and marking consistency.
- 2D X-ray inspection for die size and wirebonding layout.
- Decapsulation to verify die ID, manufacturer, and metallization pattern.
Integrated Circuits
- External inspection for structure and remarking checks.
- 2D X-ray imaging for die size, wirebond diagram, and leadframe validation.
- Decapsulation plus continuity or functional electrical testing for higher-risk devices.
Need A Testing Review For A Specific Build?
If you are managing suspect inventory, validating incoming material, or trying to align the right level of testing to a component category, our team can help you frame the right next step.
Talk With South Electronics
We can walk through part risk, test depth, and what evidence is useful before material is approved for production use.