Issue link: https://iconnect007.uberflip.com/i/1535183
30 DESIGN007 MAGAZINE I MAY 2025 entirely out of your control and can stop a PCB design project in its tracks. Component avail- ability is the nemesis of every designer. ere are various causes of component shortages. Components that are available immediately may go out of stock, be backor- dered, discontinued, or become too expen- sive. Even if your PCB layout is perfect, if the manufacturer can't get the parts, they can't build the board. at can lead to delays, extra costs, or the need to redesign the board using different components. Believe it or not, some designers choose parts without checking availability or lead times. Other times, a part might be available during design, but it's no longer in stock by the time the board is ready to be built. at hap- pens a lot during times of high demand. To move back toward the Circle of Control, check on parts availability before beginning your design. Check places like Digi-Key or Mouser for availability and lead times. Using standard parts in your designs is also smart because they are more likely to be in stock. Another helpful step is to add backup parts, oen called alternate parts, to the BOM. ese parts can do the same job and fit in the same spot if the first choice isn't available. Designers can also talk to the team ordering parts to see what's easy to buy and what's hard to find. For essential parts like microchips or power parts, it's a good idea to order them early so you don't run out later. Designers should also avoid parts that are old or being discontinued. Some tools will show whether a part is new or near its end of life. Finally, checking all your parts again before sending your design to the factory is a great idea to ensure nothing has gone out of stock. Doing these things can help your design get built on time without surprises. Designers need to be proactive, not reactive when creating a design data package. If you're only reacting to a situation or a problem, it's too late. e best way to move something from your Circle of Influence back into your Circle of Control is by taking action early and being pre- pared. at means thinking ahead, asking the right questions, and checking important details before problems happen. While you're at it, read e 7 Habits of Highly Effective People. DESIGN007 John Watson is a professor at Palomar College, San Marcos, California. To read past columns, click here.