52 poor wetting hasl results

How to Prevent Non-Wetting Defect during the SMT Reflow Process-SMT Technical-Reflow oven,SMT Reflow

| http://etasmt.com/te_news_industry/2021-09-01/24564.chtml

How to Prevent Non-Wetting Defect during the SMT Reflow Process-SMT Technical-Reflow oven,SMT Reflow Soldering Oven-cmsadmin Home About

” box Mid Year Update A Review of Some Commonly Asked Questions 4 Topics   Poor wetting and its causes   The impact of cutting into the solder joints while trimming leads

| https://www.eptac.com/wp-content/uploads/2021/11/webinar_eptac_06_16_10.pdf

Leadfree

Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2018/07/leadfree.pdf

: T, S, C, A Atmosphere: Nitrogen Temperature:240°C Large Unacceptable Void – Likely Due to Bad Wetting (Lead Free HASL Candidate

Heller Industries Inc.

Leadfree

Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2022/04/leadfree.pdf

: T, S, C, A Atmosphere: Nitrogen Temperature:240°C Large Unacceptable Void – Likely Due to Bad Wetting (Lead Free HASL Candidate

Heller Industries Inc.

PCB Libraries Forum : Wave Soldering SOT23

PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_wave-soldering-sot23_topic995.xml

. All this information is important to us. Poor Wetting can be caused by contamination of the solder or improper solder temperature or conveyor belt moving too fast.  

PCB Libraries, Inc.

Basic Requirements for Reflow Soldering Oven-News-Reflow oven,SMT Reflow Soldering Oven-cmsadmin

| http://etasmt.com/cc?ID=te_news_bulletin,13161&url=_print

. The poor wetting phenomenon usually indicates that the structure of the solder joint is not ideal, including incomplete forming of the IMC and poor solder fill

Wave Soldering SOT23 - PCB Libraries Forum

PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic995&OB=ASC.html

.   Now we have the problem of poor wetting.   The wave soldering diection is correct.   My question is also is there difference between reflow soldering footprint and the wave soldering footprint

PCB Libraries, Inc.

Process and design-related causes-News-Reflow oven,SMT Reflow Soldering Oven-cmsadmin

| http://etasmt.com/cc?ID=te_news_bulletin,23570&url=_print

: • Non-coplanar leads on the component • Excessive warpage of the PCB or substrate • Poor wetting • Insufficient amount of solder due to improper printing parameters

Which Soldering Defects are Related to the Incorrect Setup of the Reflow Profile?-SMT Technical-Refl

| http://etasmt.com/cc?ID=te_news_industry,23964&url=_print

– ramp up too fast Same as soldering ball. Poor wetting – ramp up too slow Solder paste is oxidizing if the pre-heat too long. Pre-heat and soak zone (from 150°C to 180°C

Basic Requirements for Reflow Soldering Oven-News-Reflow oven,SMT Reflow Soldering Oven-cmsadmin

| http://etasmt.com/te_news_bulletin/2019-12-17/13161.chtml

. The poor wetting phenomenon usually indicates that the structure of the solder joint is not ideal, including incomplete forming of the IMC and poor solder fill