SIP IC Substrate for System-in-Package Integration

SIP IC substrate is used when multiple components, chips, or passive devices need to be integrated into one compact package. This product is built around 4/6-layer SIP substrate structures, with compact package dimensions, thin board construction, fine routing capability, ENIG or ENEPIG finish options, and VOP process support.

For buyers, the value of this SIP substrate is not only the small outline. The design must also support SMD passive component placement, square pad geometry, blind stacked hole structures, and stable package assembly. These details affect whether the substrate can support system-in-package integration without creating avoidable assembly or reliability risk.

Package Structure and Design Value

System-in-package designs combine different functions through different packaging technologies. The substrate therefore needs to provide routing space, component landing areas, and interconnection paths in a much smaller form factor than a standard PCB.

The 4/6-layer structure gives designers more flexibility for internal routing, while the thin substrate range helps keep the final package compact. Because the package size is small, pad layout, routing clearance, and via planning should be confirmed early instead of being treated as a late fabrication detail.

Square Pads, Blind Stacked Holes, and Surface Finish

SIP substrates often need square pad designs because the package may include SMD passive components. These pads should match the assembly layout and component requirements, especially when the package area is small.

The blind stacked hole structure supports dense interconnection in a compact substrate. ENIG or ENEPIG surface treatment should be selected according to the package assembly method, bonding requirement, soldering process, and reliability expectation.

For related process background, see IC substrate PCB capabilities and the IC substrates product category.

What to Confirm Before Production

Before production, the package drawing should define the substrate outline, layer structure, square pad requirements, blind stacked hole design, finish selection, and VOP process notes. If the substrate will be assembled with passive components or multiple chip functions, the assembly sequence and reliability expectations should also be shared during quotation.

Typical Applications

SIP IC substrates are suitable for microprocessors, controllers, ASICs, radio frequency devices, storage products, smartphones, digital cameras, and compact mobile electronics where multiple functions need to be integrated into one package.

Custom SIP IC Substrate Manufacturing

For quotation and manufacturability review, provide package drawings, substrate design files, Gerber data if available, layer structure, square pad requirements, blind stacked hole structure, finish selection, VOP process notes, assembly requirements, and expected production quantity. For file preparation questions, see the FAQ on design and technical issues.