What is QFN footprint?

What is QFN footprint?

QFN stands for quad flat no-lead package. It is a leadless package that comes in small size and offers moderate heat dissipation in PCBs. Like any other IC package, the function of a QFN package is to connect the silicon die of the IC to the circuit board.

What is the difference between QFN and DFN?

The DFN is similar to the QFN, except that the latter has lands all around the periphery of the package instead of just two sides like the DFN. Because the DFN has no leads and has shorter bond wire lengths, it provides a higher electrical performance than leaded packages due to less inductance.

What is exposed pad?

Definition. An exposed pad is an exposed metal plate on an IC package. This application note describes pads that are located on the bottom of the package. The exposed pad is plated with the same metal or metal alloy as the leads of the IC, usually tin.

What is EP in PCB?

The exposed pad (EP) on Freescale microcontroller Dual Flat Pack No-lead (DFN) and Quad Flat Pack No-lead (QFN) packages is intended to improve the thermal performance of this leadless near Chip Scale Package (CSP) when it is mounted on a printed circuit board.

Is flip-chip a BGA?

A flip chip BGA is a specific type of ball grid array that makes use of a controlled collapse chip connection, or flip-chip. It works though solder bumps on the top of the chip pads. The process starts with integrated circuits on the wafer. Pads are metallized on the chips and solder balls are placed on each pad.

What is difference between LQFP and TQFP?

LQFP package having total height less than 1.7mm (including 1.7mm) and more than 1.2mm (no including 1.2mm), said package named Low profile Quad Flat Package. TQFP package having total height less than 1.2mm, said package named Thin profile Quad Flat Package.

What is an EPAD PCB?

It stands for exposed pad. They’re intended for PCB heatsinking; you solder it to a large copper plane to pull heat away.

Do Electrical Engineers do PCB design?

Schematic Capture: The hardware or electrical engineers now have the ball as they design the circuits for the individual PCB. This will involve placing symbols on the schematic and connecting lines to the pins called nets for electrical connectivity.