The first time you soldered up a surface mount component you may have been surprised "these are really small parts!" and there's dozens of different names too! QFN, SOT, SOD and so on, what do they mean and how can you tell how big they are? Now you can ha ve a reference board at your fingertips, with this snazzy PCB reference ruler. Measuring approx 1" - 7", this standard-thickness PCB ruler has the most common compone nt packages you'll encounter. It also has f ont size guide, trace-width diagram.
We'll present it to you as a gift for your continued support.
Coupon code: elecrowpcb
The coupon code value $3.9 and can be used to get one PCB ruler free for every customer.
This PCB ruler can be used as PCB design reference for Elecrow PCB fabrication service