What are the black spots in lead-free solder joints on PCB?

1 year ago

I am prototyping a PCB, using Chip Quik's "SMDSWLF.031, a Sn96.5/ Ag3.0/ Cu0.5 solder with 2.2% no-clean flux. I find

How do you draw pin grid array in cadsoft Eagle PCB?

1 year ago

I'd like to use a processor that uses a pin grid array. Eigenlijk, I'd like to make the prototyping PCB

How to handle feedline of bluetooth PCB connected to a 2.4GHz chip antenna?

1 year ago

I'm making a 4 layer PCB prototype that uses a bluetooth mcu connected to a 2.4GHz chip antenna. I'm thinking

How to Design a PCB Schematic: Een stapsgewijze handleiding

1 year ago

PCB Schematic: Wat is het? Why Is It Important? A printed circuit board design starts with a PCB schematic diagram. This PCB

How do you mount electronics on a vehicle chassis safely?

1 year ago

I want to implement a control system I designed for a light electric motorbike. I would like to mount it

Is home-made soldering aluminum PCB soldering different from ordinary PCBs in factory assembly line?

1 year ago

I am wondering if i ordered some aluminum pcbs that contain D2pak transistors and i want to solder a couple

Is paste mask layer, both top and bottom layer, necessary for THT components?

1 year ago

I know the paste mask layer is also called the stencil layer. It's only used for assembly. I want to

How can I handle missing solder mask opening on PCB footprint?

1 year ago

I have three through-hole PCBs that are missing front and back solder mask openings for two of the components. De…

Can I design SMD elements on the back of THT?

1 year ago

I'm designing a PCB right now and found out I can save a lot of space using the back of

What is the use of thermal reliefs on vias for a copper pour?

1 year ago

My EDA software (PCAD, but I guess others do this too) adds thermal reliefs on vias in a copper pour.