Impedance Discontinuities Cause Signal Reflections In the video, the transmission line suddenly widens, and high-frequency, high-speed signals are clearly emitted at the point of impedance discontinuity.
Time domain Vs Frequency domain
he time domain is the representation of a signal in terms of its time variation, while the frequency domain is the representation of a signal in terms of its frequency components.
#radiofrequency#frequency
SMD and NSMD pads
Non-solder mask defined BGA pads (NSMD)NSMD
pads vary from SMD pads in that the solder mask is defined to not contact the copper pad. The mask is instead created such that a gap is generated between the pad edge and the solder mask.
#nsmd#smd#pcba#bga
Edge connectors are generally used for connecting one PCB to another, the edgeconnector is plugged in to a socket on anotherPCB making theconnection.
Picture can be seen on computermotherboard where you plug a graphics card with a goldedge connector into the socket on motherboard
Castellations-or castellated edges, plated holes on the board’s edge, plated half-holes - are rampart-like structures along the edges of a printed circuit board. Their main advantage is that they allow an electrical connection to another board through the side edges of the board!
What is Tombstoning ?
Tombstoning also known as the Manhattan or crocodile effect is where one end of the component lifts from a pad of the PCB during reflow soldering process and affects mainly surface mount components such as resistors, capacitor and inductors.
#pcba#smt#smd