QFN in ceramica

In scenarios demanding resistance to corrosive environments or high-frequency demands, the implementation of ceramic-based QFN technology can emerge as a strategic choice. By employing ceramic materials as the substrate for the QFN package, a distinct package family is born.

QFN in ceramica

This particular ceramic QFN proves highly suitable for instances where the standard QFN form factor is desired, yet the quest for elevated performance and reliability steers the requirement toward a hermetically sealed air cavity configuration. A diverse array of standard form factors is at one’s disposal, spanning from 3×3 mm to 8×8 mm, each offering a selection of pad counts to cater to different configurations.

Ceramic QFN encompasses a plethora of lid alternatives, encompassing the traditional combination lids plated with gold, as well as cryogenically sealed glass-ceramic lids. The range extends to encompass various base options, embracing bases characterized by high thermal conductivity, tailor-made for power semiconductor applications, and ceramic bottoms designed to ensure the chip’s electrical isolation.

Now, let’s delve into the advantages that ceramic materials bring to the table when juxtaposed with the conventional QFN approach. Tecnologia FS has meticulously curated the ensuing insights for your consideration:

CaratteristicaPlastic QFNQFN in ceramica
MaterialeMade with plastic or epoxy resin;Made of ceramic material;
Prestazioni termicheGood thermal performance but slightly inferior compared to ceramic materials;Excellent thermal conductivity, which can dissipate the heat generated when the chip is running faster;
CostoSimple processing and low-cost materials help reduce project costs;Relatively more expensive due to ceramic material.
Prestazioni elettricheSuitable for standard applications.Excellent for high-frequency applications.
ApplicazioniConsumer electronics, general-purpose.Due to the high cost, it is more beneficial to apply to high-margin or applications that require high-frequency performance;
WeightLightweight due to plastic material.Heavier due to denser ceramic material.
Materiale del substratoTypically uses FR-4 or similar materials.Specialized ceramic substrates PCB.
Frequency ResponseCan be used for high frequency applications but may have limitations in design;Good frequency response at higher frequencies.
Conteggio dei piombiAvailable in various lead counts.Often available with high lead counts.
Hermetic SealNot hermetically sealed.Can be hermetically sealed for increased protection from moisture and contaminants;

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