Semiconductors & Chips: How to Identify Refurbished or Counterfeit Components
A counterfeit integrated circuit does not announce itself. It arrives in branded packaging, with a p...
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Electronic Transformers: Inductance Testing, Dielectric Strength, and Temperature Rise under Load
A transformer that meets its rated specifications at room temperature with no load is not the same t...
Capacitors & Resistors: Tolerance Screening and Voltage Withstand Testing
A capacitor or resistor that measures within spec at room temperature on the factory floor is not th...
PCBA Inspection: Using AOI and X-Ray to Detect Soldering Defects
A solder bridge connecting two adjacent pads on a densely packed PCB. A void trapped beneath a BGA b...
Gaming Controller QC: How to Stress-Test Button Actuation Lifespan and Joystick Drift Tolerance Limits
A gaming controller that develops stick drift after 90 days is not a defective unit that slipped thr...
Tablets & Monitors: Applying AQL Standards for Pixel Defects and Backlight Uniformity Inspection
Display defects are invisible in the factory carton and brutally visible the moment a customer power...
