Category Archives: Circuit Design

Over the last quarter, Screaming Circuits has upgraded the hardware and software on all its Mydata equipment.

“Since we created Screaming Circuits, MyData machines have been an important part of our formula for success. As we integrated a MY12 into one of our production lines, we saw the opportunity to make upgrades across all our MyData lines and standardize them,” said Ashley Rochholz, Screaming Circuits’ Manufacturing Manager.

The upgrades included new cameras providing improved optics on all machines, software revision level upgrades, new hard drives and a new server.

The optics are particularly important be-cause as a quick turn prototype house, Screaming Circuits must deal with a wide variety of component styles and packaging types. Not all received material places well. The upgraded optics are identifying issues faster and providing more detailed error codes, which decreases the time needed to correct the issue. The new server has reduced programming and offline setup time.

The addition of the MY12 has also enabled the team to increase throughput.

“With the addition of this machine, we were able to take an older MyData ma-chine offline. We are now using it to experiment with offline setup strategies, while the MY12 has provided some nice efficiency gains,” added Ashley.

Ashley estimates that overall, the improvements have increased efficiency by 140 percent.

Milwaukee Electronics’ Portland, OR facility recently hosted an arms-on problem-fixing event that took a multi-company approach to non-stop development. The workshop was facilitated by Mike Hoseus, the executive Director of the Center for Quality People & Organizations (CQPO). CQPO is an organization developed in 1999 as a vision of Toyota Motor manufacturing to proportion Lean exceptional philosophy and human resource practices with training, business, and community groups. Mike is a Toyota licensed teacher in worldwide hassle solving and Waste discount, Standardized Work and Kaizen events. He’s the co-creator of Toyota Culture with Jeff Liker (author of The Toyota Way, The Toyota Way Fieldbook, and Toyota Talent).

The event combined training with hands-on problem solving.

The event combined training with hands-on problem solving.

The event included participants from seven other non-competing manufacturing companies: Benchmade Knife Company, Columbia Machine, ESCO Corporation, Keith Manufacturing, Leupold & Stevens, Myers Container and Woodfold. Milwaukee Electronics identified six areas they would like to improve and six teams were created from the participants. The approach put “fresh minds” on each problem and added the perspective of people familiar with manufacturing practices in non-related industries.

“We really got more out of this than we thought we would. HEPC was very pleased with our ability to answer questions and provide data. I was particularly impressed during the workshop at what the team members from other companies who had no familiarity with our processes were able to discover,” said Ashley Rochholz, Screaming Circuits Manufacturing Manager.

The teams were introduced to an eight-step program solving process:

  • Step 1: Clarify the problem
  • Step 2: Break down the problem
  • Step 3: Target setting
  • Step 4: Root cause analysis
  • Step 5: Develop countermeasures and implementation plan
  • Step 6: Seeing countermeasures through
  • Step 7: Monitoring the process and results
  • Step 8: Standardized successful practices and share.

During the two-day workshop, each multi -company team utilized the tools and training provided to work through their assigned improvement area. At the end of the event, Milwaukee Electronics’ team leaders because responsible for implementing the solutions and reporting results.

Some of improvement areas worked on included:

  • Inventory transaction errors between raw material and work-in-progress (WIP) and job to finished goods (FG). This problem solving effort was a good example of a team finding out that an assumed root cause was not the actual root cause. After research into the data, the team found that the transaction error issue was better handled as part of the EMS SMT team’s problem-solving focus. They provided the data they reviewed early in the process to the SMT team and then focused on improving cycle counting. That effort identified that a scale in the stockroom could be impacted by temperature and vibration. Previously, it had been assumed that unit was not susceptible to environmental changes and it was not on the calibration list. It was leveled on a stable shelf mount and added to the calibration list. A reel counter was determined to be inaccurate and new unit is on order.
  • Late internal EMS deliveries to subsequent processes from SMT. The team found there were two root causes for inefficient throughput: the planning schedule and insufficient parts. The planning schedule was outside of their control, so they focused on the part shortages. Machine-driven attrition was the main driver. The solution focused on reviewing scrap factors on projects where the situation had occurred more than once to determine if they were incorrectly calculating scrap factors. They also reviewed the data provided by the inventory transaction team and found that material used in rework operations wasn’t being counted. The results after the first month of corrective action were that the SMT area has eliminated the backlog of late jobs. Most of the jobs during the month were classified as late in on-time delivery (OTD) metrics tracking because of the backlog. Now that it has been eliminated, that metric should improve. The team’s original plan was to use the daily machine reports to identify scrap rates higher than issued in Epicor and reduce the number of WIP shortages on the line. Purchasing Manager Loan Thai offered an easier solution, suggesting that with IT’s help, the reports could be used to automatically adjust higher scrap parts out of Epicor so that inventory counts would be correct. The project is currently at this stage and is being led by the Purchasing Manager. The original OTD metric was averaging 38 percent and is now up to 50 percent.
  • Eliminating downtime on Screaming Circuits’ SMT lines. The team looked at data logs from the line and found that most of the downtime was related to the setup process for Mydata equipment, more specifically a process known as bill of material (BOM) site, which checks the programming for accuracy. The team is exploring if operators could perform BOM site for the next job while waiting for the printed circuit board assemblies (PCBAs) to finish the assembly process or do the activity offline on another placement machine. The team also questioned whether or not the process was actually necessary and has been performing design of experiments (DOEs) to find out what works best on second shift.
  • KISS selective solder machine down- (Continued from page 3) time. The KISS unit was already scheduled for refurbishment, so the team did not look at mechanical issue-driven downtime. Instead they focused on bottlenecks in PCBAs waiting for QC inspection. They decided to add a visual color-coded status indicator as a signal to QC inspectors. Red indicated that they were line down and needed immediate support, yellow indicated that a QC inspector was needed in the next 10 -15 minutes and green indicated that QC inspection was keeping pace with demand. They also moved the QC station closer to the machine so that the operation and QC inspector could communicate without leaving their work areas. The visual indicator was also in view of Screaming Circuits’ Supervisor. Finally, a scheduling board was added to help the operator better understand job priority.

Tara Locke, a Stockroom Clerk summed up what the class meant to participants well: “This class has influenced us to better our processes to make the company more efficient. There is still work in progress. By consistently evaluating our processes we will continue to have improvements. More proficient processes make a business that builds confidence in our customers and employees.”

HPEC is a program that grew out of the Association for Manufacturing Excellence (AME). They facilitated the event that Milwaukee Electronics hosted.

“EMS companies must constantly improve. The benefit of this type of collaborative effort was that in addition to learning a strong problem-solving method, our personnel also applied that method to solving small issues that impacted quality, efficiency, and cost. This ‘hands on’ training methodology helps instill a focus on applying these skills anywhere unexpected outcomes arise,” added Ashley.


Milwaukee Electronics’ combined engineering and manufacturing solutions were discussed in the March issue of SMT Magazine. The article looks at the benefits accrued when engineering and manufacturing services are combined, using actual case study examples. Some of these advantages include:

  • Close coordination between product development and manufacturing teams
  • A holistic Dfx approach
  • Better ability to align resources to fill gaps in the customer’s engineering team
  • Ability to work with the same engineering team over the long-term.

Read more here.

March issue of SMT Magazine

March issue of
SMT Magazine

Milwaukee Electronics began to develop electronics manufacturing solutions for our customers over 60 years ago. Back in 1954, the bourgeoning world of PCB Read More

As technology continually advances, new challenges also thereby repeatedly arise for circuit board designers who aim to create products that are both economical to manufacture, and uncomplicated to test. Design for Test (DFT) is a methodology used by PCB designers, Read More

For over 60 years, Milwaukee Electronics has been helping our customers create better products by developing solutions for a number of electronic design, embedded systems, and industrial controls projects. Over that time, we have gained valuable experience Read More

Achieving a superior level of quality while keeping costs competitive is the strategy that has helped Milwaukee Electronics stand out as a US-based electronics manufacturer. One key element for the success of this approach is the ability to provide resources and know-how which accommodates a variety of test solutions tailored to specific customer needs. Read More

Back in the 70s and 80s, the technology wave was hardware-driven and hardware engineering was king. Many of today’s largest companies were getting their start in an engineer’s garage or basement. Since then however, an increasing focus on exploiting the existing hardware via new software applications and enhanced connectivity has instead taken place. Read More