Investigating the effect of large SMD components on heating during vapour phase soldering

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F17%3A00320506" target="_blank" >RIV/68407700:21230/17:00320506 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/8259854" target="_blank" >https://ieeexplore.ieee.org/document/8259854</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/SIITME.2017.8259854" target="_blank" >10.1109/SIITME.2017.8259854</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigating the effect of large SMD components on heating during vapour phase soldering

Popis výsledku v původním jazyce

The paper presents fundamental investigations into the field of vapour phase soldering, specially focusing on the effect of large surface mounted components (e.g. shadowing and possible consequent tombstoning). During the vapour phase reflow the heat transfer processes are based on condensation and the temperature distributions are affected by the geometry and thermal masses of the heated assemblies. The paper investigates the problem from the aspect of components with high thermal mass, which may affect the process of condensation, due to their increased thermal requirements. The experimental is based on FR4 type printed circuit boards, where large packages (SMD capacitors) are attached with SMD adhesives on the top surface of the board at specified locations. The thermocouples are fixed in bores inside the PCB at given locations to highlight any possibility of shadowing (caused by condensate flow blocking effect or vapour consumption) and inside the components where any significant transient effects serve information about the process itself. The measurements are logged with a custom data logger device, which was developed specifically for the investigations. The initial results show that shadowing might not be a problem even near large components, however the overall heating characteristics of the board and the components are affected by the relatively large thermal masses of the applied packages.

Název v anglickém jazyce

Investigating the effect of large SMD components on heating during vapour phase soldering

Popis výsledku anglicky

The paper presents fundamental investigations into the field of vapour phase soldering, specially focusing on the effect of large surface mounted components (e.g. shadowing and possible consequent tombstoning). During the vapour phase reflow the heat transfer processes are based on condensation and the temperature distributions are affected by the geometry and thermal masses of the heated assemblies. The paper investigates the problem from the aspect of components with high thermal mass, which may affect the process of condensation, due to their increased thermal requirements. The experimental is based on FR4 type printed circuit boards, where large packages (SMD capacitors) are attached with SMD adhesives on the top surface of the board at specified locations. The thermocouples are fixed in bores inside the PCB at given locations to highlight any possibility of shadowing (caused by condensate flow blocking effect or vapour consumption) and inside the components where any significant transient effects serve information about the process itself. The measurements are logged with a custom data logger device, which was developed specifically for the investigations. The initial results show that shadowing might not be a problem even near large components, however the overall heating characteristics of the board and the components are affected by the relatively large thermal masses of the applied packages.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

IEEE 23rd International Symposium for Design and Technology in Electronic Packaging

ISBN

978-1-5386-1626-0

ISSN

2641-287X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

44-49

Název nakladatele

Cavallioti

Místo vydání

—

Místo konání akce

Constanta

Datum konání akce

26. 10. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000428032300005