Case 2127 ยท Public preview
Excess Forward Current Can Rupture LED Bond Wire and Damage Encapsulant
Three LED modules showed open circuits, encapsulant fracture, or both after operation above the device's rated forward current.
Continuity testingOptical microscopyMicrosectioningSEMEDSMulti-device comparison
What the evidence preview establishes
Operation at 150 percent of rated forward current produced accumulated thermal-mechanical damage. Repeated evidence included decomposition around the hottest wire span, ductile gold-wire rupture, encapsulant fracture, and separation from the cup.
Why this case matters
Current above an LED rating can create cumulative package damage before catastrophic failure. Derating protects the bond wire, encapsulant adhesion, optical material, and thermal path as well as the semiconductor junction.
Full evidence reserved for MEMBER and STOREThe complete case includes the evidence sequence, four interpreted figures, alternative explanations, limitations, and practical application guidance.