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Folks, Mary had worked at a small SMT “mom and pop” shop for 12 years. Business was always good and she moved up to CFO of the 60 per...

# The Holy Grail of Soldering: Low-Temperature Reflow – High-Temperature Use

Folks, soldering enables modern electronics. Without solder, electronics would not exist. Copper melts at 1085°C, yet with solder we can bond copp...

# The Limits of Mixing: A Real World Example

Folks, some time ago I posted on the limits of mixing. In modern manufacturing, there may be some applications that require two metal powders to be ev...

# Calculating Small P Values in Hypothesis Testing

Folks, Let's continue watching Patty help Mark to determine small P values in hypothesis testing. The first part of this story is here.  Patt...

# In Hypothesis Testing, the P Value Can't Be Zero.

Folks, we haven't checked on Patty in a while… As Patty walked into her office, her phone rang. “Hello, this is Professor Coleman,...

# Tin Pest in Medieval Culture

Folks, Readers may remember that I have had an interest in tin pest for some time. Tin pest can occur if nearly pure tin is exposed to cold temperatur...

# Webinar on Voiding June 11, 9AM and 2PM EST

Folks, I will be presenting a workshop on “Understanding and Troubleshooting Voiding in Bottom Terminated Components (BTCs)." BTCs are one ...

# Stencil Aperture Design for the Pin in Paste (PIP) Process

Peter writes, Dear Dr. Ron, I am trying to implement the Pin-in-Paste (PIP) process. The PWB is 63 mils thick, the component pin diameter is 47 mils, ...

# The Area Ratio for Odd Shaped Stencil Apertures

Joey writes: Dear Dr. Ron, I have a stencil aperture with an unusual shape. See Figure 1. How do I calculate the area ratio? The stencil thickness is ...

# Autonomous Vehicles Even Farther Out in Time

Folks, Readers of this blog will remember that I have been a skeptic of self-driving cars emerging in the near term. I am even less sanguine today. A ...

# Thixotropy: An Important Solder Paste Property

Folks, To the SMT process engineer, the second most important thixotropic material in their lives is solder paste. If solder paste was not thixotropic...

# Zarrow and Hall's "Board Talk" Becomes a Book

Dr. Ron introduces a new book to help electronics assembly process engineers to troubleshoot everyday assembly defects and challenges. ...