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Cost of Ownership vs Profit Potential In Electronics Assembly
Folks, Let’s look in on Patty and Pete and see how they are handling Rex “The Torrent.” Patty wanted to give Pete a little more exposure so she nodded to him to chime
Patty Presents Her Electronics Assembly Copy Exactly Strategy
Folks, Patty is getting ready for her meeting on "Copy Exactly" with Mike Madigan……. It was after 6:30 PM and Patty was just arriving home. Since Patty was working late, Rob had
Is Lowest “Cost of Ownership” the Best Electronics Assembly Manufacturing Metric?
Folks, Let’s look in on Patty and her colleagues…… Sam Watkins, ACME New Hampshire site GM, had just finished meeting with his boss, ACME CEO Mike Madigan. He was embarrassed that
Effecting And Evaluating Tabbing Ribbon Bond Strength, Reliability, And Performance
Readers have asked how to visually assess a tabbing ribbon interconnection after a bond test. This image is a cell that has been bond tested after soldering. The first indication that you have a good
Etching Indium to Remove Oxides
With regard to soldering or wetting (coating) with indium, we are often asked to comment on the oxide formation of indium and how to remove it. We are also asked how long will it take for the oxide
Soldering to Stainless Steel
We are often asked if it is possible to solder to stainless steel and, if so, what is the best procedure.As you may already know, stainless steel is not easy to solder but it can be done with a
Soldering to Aluminum
We are frequently asked if it is possible to solder to aluminum.The answer is yes, if the following guidelines are followed: FLUXES: Because it is difficult to solder to aluminum, Indium Corporation
Patty Cost Analyzes an MRI scan
Folks, Let’s see how Patty is doing with the latest crisis…… Upon hearing Claire Perkins inform her that Rob was in the hospital, Patty froze and her face looked ashen.She quickly
Switching from High Lead Solders to Eutectic AuSn
Two categories of solder are available to choose from when the in-service environment for a device reaches above 125°C either in continuous operation or thermal cycling accelerated life
Patty Pitches NMAC/I/O
Folks, Patty arrived at work an hour early to prepare for her meeting with ACME CEO Mike Madigan.Nineteen days ago, he had asked her to develop an electronics assembly metric that would correlate
Indium-Copper Intermetallics in Soldering
Indium and indium-containing alloys see wide use in a multitude of soldering applications. Indium has many attractive properties such as remaining ductile at cryogenic temperatures, compatibility
Void Reduction in Solder Joints
It is often said that a chain is only as strong as it weakest link, the same can be true for a series of solder joints on a component. When one is bad, the rest are useless. Quite often, voiding is
Cold Welding Indium Metal
Indium metal has the unique ability to cold weld (bond) to itself at room temperature. Though this is, technically, not soldering, this property makes it especially useful for low-temperature bonding
Tombstoning: The Death of a PCBA
Tombstoning (also known as the Manhattan effect, drawbridge effect, or Stonehenge effect) is described (in the simplest, and most common, sense) as occurring when one end of a passive device, such as
Patty Seeks the Ultimate Electronics Assembly Productivity Metric
Folks, Let's look in on Patty…… Patty was just finishing a report on work that she and Pete had performed with a team of her ACME colleagues on reducing the Head-in-Pillow (HIP)
Hand Soldering Recommendations for Solar Module Assembly
Here is a list of tricks to help you overcome the issues that can arise while hand soldering silicon-based solar cells (and other applications as
Statistics: How Unusual is the New Orleans 0-11 Coin Toss Loss?
Folks, In addition to electronics assembly productivity, solder paste and solder preform applications, and other electronics assembly concerns, many of you know that I teach statistics and have been
Solder Paste Expiration / Shelf Life
Solder paste is comprised of powdered solder alloy suspended in a flux vehicle. There is a group of flux ingredients that is generically identified as
Solder Paste and Flux Dip Depth: II
Following on from our discussions of last time… As you will recall from the previous post on this topic, My friend and colleague Chris Nash and I were discussing some puzzling results for low
Intermetallics In Soldering
Intermetallics are a necessary evil in the metal-to-metal bonding world, which definitely includes soldering. There are two basic ways that metal will "chemically"bond to another metal: 1)
Solder Paste and Flux Dip Depth: I
My friend and colleague Chris Nash and I were recently discussing some puzzling results for low dip height found during testing of package-on-package (PoP) materials. The findings will be of interest
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