The effect of AuSn preform thickness on thermal transfer in semiconductor laser technologies

Jenny Gallery; Samuel Lytwynec

doi:10.1117/12.2610113

4 March 2022 The effect of AuSn preform thickness on thermal transfer in semiconductor laser technologies

Jenny Gallery, Samuel Lytwynec

Proceedings Volume 11983, High-Power Diode Laser Technology XX; 119830K (2022) https://doi.org/10.1117/12.2610113
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

For the plethora of applications that require a high-melting die-attach solder, 80Au20Sn is a great choice to ensure good performance and reliability, especially when used in one of its most highly demanded applications: semiconductor laser die-attach. However, difficulty managing thermal heat transfer has prevented the widespread use of semiconductor lasers. When the operational heat of these devices increases, their longevity and potential become limited. One option to improve thermal transfer is the use a thinner 80Au20Sn preform in the bondline, which allows the heat to transfer to the heat sink more quickly and efficiently. The creation of voiding hot spots – due to the lack of solder volume – is a perceived concern when using a thinner preform in the solder joint, which then contradicts the original intention. Voiding percentages were defined for several 80Au20Sn preform thicknesses – ranging from 0.002” to 0.00035” thick – allowing for conclusions to be drawn on the effect of 80Au20Sn preform thickness on thermal transfer in semiconductor laser technologies.

Conference Presentation

Citation Download Citation

Jenny Gallery and Samuel Lytwynec "The effect of AuSn preform thickness on thermal transfer in semiconductor laser technologies", Proc. SPIE 11983, High-Power Diode Laser Technology XX, 119830K (4 March 2022); https://doi.org/10.1117/12.2610113

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available