MCM IC Substrate for Multi-Chip Module Package Designs

MCM IC substrate is used for multi-chip module package designs where chips with different functions are integrated into one compact package. This product is a 2-layer IC substrate with more blind hole filling structures, 12 x 14 mm size, 0.2-0.3 mm board thickness, 25/25 um line width and spacing, OSP surface treatment, and VIP special process.

The product is intended for compact package designs where the substrate must support chip integration, fine routing, and package-level electrical connection in a very small footprint. For buyers, the key point is the combination of thin substrate thickness, fine 25/25 um routing, blind hole filling, and VIP process control, not only the MCM package name.

Why MCM Substrate Structure Matters

MCM packaging combines different chip functions into one package. This can help reduce product size and support light, thin, short, and miniaturized electronic designs, but it also makes routing, signal behavior, and heat transfer more demanding.

The 12 x 14 mm package size and 0.2-0.3 mm thickness indicate a small and thin substrate structure. In this type of product, routing density and via filling quality directly affect whether the package can support multiple chip functions without creating avoidable assembly or reliability problems.

Fine Routing and Blind Hole Filling

The 25/25 um line width and spacing supports fine interconnect routing for compact IC substrate designs. This level of routing should be reviewed together with the chip layout, signal path, pad arrangement, and inspection requirements.

This substrate can use more blind hole filling structures, which are important for package-level routing and surface planarity. Blind hole filling quality can affect subsequent assembly, electrical connection, and reliability, especially when the substrate is thin and the package footprint is small.

Surface Treatment and VIP Process

OSP surface treatment provides a solderable organic surface finish for the substrate. It should be selected and controlled according to the assembly process, storage condition, and final soldering requirement.

The VIP special process should be confirmed in the design files and manufacturing notes before quotation. For MCM substrates, the special process, blind hole filling, line width, and substrate thickness should be reviewed together rather than treated as separate items.

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

Quality Control and Manufacturing Review

For this MCM IC substrate, manufacturing review should focus on blind hole filling quality, fine-line registration, thin substrate handling, OSP surface condition, and VIP process consistency. These points matter because the board is small, thin, and intended for multi-chip package use.

Production preparation should define the chip functions being combined, the intended package application, routing requirements, thermal or reliability expectations, and whether the empty gold finger spacing field needs confirmation.

Typical Applications

MCM IC substrate is suitable for package designs where functional integration and miniaturization are important. Typical application directions include:

• Smartphone memory
• Multimedia processors
• Mobile electronic device storage
• Compact multi-chip module packages
• Advanced electronics that require small substrate size and fine routing

The final application fit depends on the chip combination, package layout, thermal path, and electrical reliability requirements.

Custom MCM IC Substrate Manufacturing

SAYFU can manufacture MCM IC substrates based on customer-supplied package drawings, substrate design files, routing requirements, surface treatment requirements, and production quantity. For this product type, the 2-layer structure, 12 x 14 mm size, 0.2-0.3 mm thickness, 25/25 um routing, OSP finish, blind hole filling, and VIP process should be reviewed as one manufacturing requirement.

For quotation and manufacturability review, provide:

• Package drawings
• Substrate design files
• Gerber data if available
• Blind hole filling requirements
• VIP process notes
• Surface treatment requirement
• Chip function and package application
• Reliability or thermal requirements
• Expected production quantity

For broader process and file preparation questions, see PCB manufacturing capabilities and FAQ on design and technical issues.