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SMTnet Express, November 19, 2014, Subscribers: 23530, Members: Companies: 14112, Users: 37185

Technical Library

Effects of Packaging Materials on the Lifetime of LED Modules Under High Temperature Test

Lei Nie, Wenjing Xiang - Hubei University of Technology, Mingxiang Chen, Huajing Li, Quan Chen - Huazhong University of Science and Technology

Performance degradation of packaging material is an important reason for the lifetime reduction of LED. In order to understanding the failure behavior of packaging material, silicone and phosphor were chosen to fabricate LED samples within which an aging test at 125? was performed. The result of online luminance measurement showed that LED samples with both silicone and phosphor had the highest luminance decay rate among all test samples because the carbonization of silicone and the consequent outgassing reduced the luminance quickly. The result of the luminance variance with test time was analyzed and an exponential decay model was developed with which the lifetime of LED under high temperature could be estimated...

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Events Calendar

2014 International Printed Circuit & APEX South China Fair

Shenzhen, China | December 3 - 4 | HKPCA - The 2014 Show theme, Innovation through Resilience...

EPTC 2014 - The 16th Electronics Packaging Technology Conference

Singapore | December 3 - 5 | IEEE - technological developments in all areas of electronic packaging from design to manufacturing and operation...

LED, BGA, and QFN Assembly and Inspection - Online Webtorial

Online Webtorial | December 2 - 9 | SMTA - In this webtorial we will cover the manufacturing of the most challenging surface mount parts to assemble and inspect today: LEDs, BGAs, and QFNs...

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SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies.

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Next Event: Space Coast and Tampa Bay Expo & Tech Forum - December 4


IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly.

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Next Event: IPC APEX EXPO Conference & Exhibition 2015 - February 24 - 26

Technical Editor - Davef (submit your technical articles)

Newsletter Editor - Anna Girouard, 98 Elm Street, Portland, Maine 04101 USA, Tel.207-780-0887.

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