Semiconductor Packaging Materials

Solder Bump Plating

Production-proven Electroplating Chemistries for Wafer Level Packaging

DuPont Electronics and Imaging’s award-winning Solderon™ BP electroplating chemistries are reliable alternatives to tin-lead alloys for all wafer bumping applications, from standard C4 solder bumps to capping fine-pitch Cu µpillars.

Our lead-free, single-step plating materials are specifically designed for the most challenging advanced wafer-level packaging applications. A variety of formulations including tin-silver alloys, pure tin, and indium materials meet a range of process temperatures and melting points, suiting both high- and low-temperature processing needs. Designed to overcome our customers’ most difficult challenges, such as voiding and throughput, Solderon™ products feature:

  • High-speed plating capabilities
  • Good surface morphology
  • Excellent thickness uniformity
  • A wide process window

DuPont Electronics & Imaging leads the way with low-alpha materials by offering tin with low-alpha-particle-emitting versions of our products, which are ideal for packaging applications sensitive to the effects of these emissions.

  • Solder bumps form the electronic interconnect between a chip and its substrate. In wafer level packaging processes, bumps range in size and shape from standard C4 bumps, to solder caps on Cu pillars and µpillars.

  • Environmental requirements are limiting the use of lead in solders. Additionally, different devices and manufacturing processes need to withstand both low and high temperatures. With this in mind, DuPont Electronics & Imaging has developed tin-silver, pure tin and indium formulations to enable a variety of lead-free bumping applications at a range of temperatures.

Semiconductor Packaging Materials

  • Solder Bump Plating
  • Copper Pillar Plating
  • Copper Redistribution Layer
  • Under Bump Metallization
  • Bump Plating Photoresists
  • Through Silicon Via Copper
  • Packaging Dielectrics

Solder Bump Plating

DuPont’s award-winning Solderon™ BP electroplating chemistries are a reliable alternative to tin-lead alloys for all wafer bumping applications.

Solderon™ BP 1000 Indium Chemistry

Indium plating chemistry designed for low-temperature solder plating processes used in advanced wafer-level packaging for emerging applications that are sensitive to temperature.

Solderon™ BP TS 6000 Tin-Silver Plating Chemistry

HVM-proven tin-silver plating chemistry for lead-free, fine-pitch solder bump applications with industry-leading process versatility.


Copper Pillar Plating

Our production-proven Cu pillar formulations work in perfect harmony with our under-bump metallization (UBM) and tin-silver capping chemistries, to provide a seamless solution for all your Cu pillar needs.

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Copper Redistribution Layer

DuPont Electronics & Imaging copper chemistries for redistribution layers (RDLs) are ideally suited to today’s high-density requirements for wafer level packaging applications.

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Under Bump Metallization

We offer a production-proven electroplating nickel chemistry tailored to meet a variety of UBM process needs

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Bump Plating Photoresists

DuPont offers positive- and negative-tone photoresists designed to meet the tight pitches and varied topographies of today’s semiconductor advanced packaging applications.

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Dry Film Photoresists for WLP

Wafer-level packaging dry-film photoresist solutions for 3DIC, fan out, bumping, copper pillar and redistribution applications.

Liquid Photoresists

DuPont offers liquid bump plating photoresists, along with associated ancillaries, that are ideally suited for wafer-level packaging applications using single-spin coating.


Through Silicon Via Copper

Years of experience and success in electroplating damascene copper have helped DuPont bring leading-edge copper TSV chemistries to the advanced packaging market.

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Packaging Dielectrics

Look to DuPont for packaging dielectric formulations that have the mechanical properties, high resolution, low-temp curing, easy processes, and superior reliability needed to protect your advanced WLP.

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