Through-hole component guide covering THT components, leaded packages, PCB mounting, soldering techniques, applications, and electronic assembly reference.
TO-3 Case Grounding
Directly ground the metal flange of TO-3 headers to the heat-sink core to provide both a structural anchor and logic return.
Bending Loop Offsets
Ensure axial resistors have at least 2.0mm of straight lead allowance on each side before bending to prevent ceramic seal cracking.
CERDIP Glass Seals
Maintain consistent reflow preheating loops to prevent mechanical stress on the glass seals of ceramic CERDIP frames.
Molded SIP Network Tubes
Align pin 1 (indicated by a contrasting stripe or notch) with the designated board pad during manual SIP installation.
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 footprint dimensions, lead counts, pitches, and JEDEC case parameters for TO-devices, radial components, DIP, and axial packages.
Finding accurate pin layouts and dimensional limits is essential for aerospace hardware engineers, high-temperature system designers, and component engineers. 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.
Through-Hole Component Guide is a free online calculator tool. Use it to get instant, accurate results for your electronics calculations.