GB/T 39950-2021 (English Version) PDF

Scope: This standard specifies the classification, marking, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of alumina ceramic heat dissipation components for LED lamps. This standard is applicable to alumina ceramic heat dissipation elements carrying light-emitting chips and metal circuits for LED lamps.

GB/T 39950-2021 Referenced Document

GB/T 14619 Alumina ceramic substrates for thick film integrated circuits
GB/T 22588 Determination of thermal diffusivity or thermal conductivity by the flash method
GB/T 25995 Test methods for density and apparent porosity of fine ceramics
GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)
GB/T 5593 Structure ceramic materials used in electronic component and device
GB/T 5594.5 Test methods for properties of structure ceramic used in electronic components--Test method for volume resistivity
GB/T 6062 Geometrical Product Specifications(GPS).Surface texture:Profile method.Nominal characteristic of contact(stylus) instruments
GB/T 6569 Fine ceramics (advanced ceramics, advanced technical ceramics) - Test method for flexural strength of monolithic ceramics at room temperature
GB/T 6900 Chemical analysis of alumina silica refractories
GB/T 9531.1-1988 General specification for electronic ceramic parts