Grid Array package guide covering BGA, LGA, PGA package types, pin layouts, thermal performance, mounting methods, applications, and semiconductor packaging reference.
0.3mm Capillary Reflow
Utilize tight thermal-gradient profiles to avoid adjacent solder bridging on ultra-fine 0.3mm pitch copper pillars.
eWLP Fan-Out Placement
Incorporate eWLP fan-out technology to route 144 ball connections on active dies measuring only 3.5mm SQ.
Micro-Via HDI Routing
Deploy high-density interconnect (HDI) microvias to escape-route dense 0.4mm pitch ball grid matrices.
Joint Underfill Reinforcement
Inject epoxy underfill below high-stress 0.5mm pitch WLP margins to distribute shear strain during thermal cycles.
Semiconductor packaging acts as the bridge connecting delicate integrated circuit (IC) silicon dies to the printable circuit boards (PCBs) of larger electronic systems. Traditional packaging used wire bonding to link the peripheral die pads to leadframes (DIP, QFP, SOIC). Modern grid array packaging bypasses wire connections entirely, placing contacts under the chip body as ball grid arrays (BGA).
This reference guide organizes standard dimensions, ball counts, pitches, and rebuilding matrices for WLP and eWLP configurations.
Finding accurate pin layouts and dimensional limits is essential for packaging designers, layout engineers, and manufacturing technicians. Using standardized package configurations ensures footprint compatibility and optimal thermal management.
Always verify actual manufacturer footprint specifications prior to board routing. Correct mechanical layouts prevent structural misalignments during reflow.
BGA packages use an intermediate organic or ceramic substrate/interposer to route signals from the die to the solder balls. WLP (Wafer Level Package) places solder balls directly onto the passivated surface of the silicon die, eliminating the substrate completely for the smallest possible footprint.
As silicon chips shrink, their physical die size decreases. However, high-performance chips still require a large number of pins. EWLP embeds the die in a mold compound wafer, providing extra perimeter area to route signals out ("Fan-Out"), avoiding physical pin-count limitations of tiny silicon surfaces.
Fine-pitch arrays (under 0.50mm) require advanced PCB fabrication technologies, such as high-density interconnect (HDI) microvias, laser drilling, and narrow track routing. Larger pitch arrays (0.80mm - 1.0mm) can be routed using standard, lower-cost multilayers.
Grid Array Package Guide is a free online calculator tool. Use it to get instant, accurate results for your electronics calculations.