Thick-Film Pastes

Thick-Film Pastes offers the following features:

Temperature-Stable Performance
TCR control extends the usable temperature range of devices

High ESD Resistance
Safeguards electronic components from static damage

Stable Dispersion Control
Good dispersibility delivers stable printability and consistent performance

Thick-film pastes consists of metal powder, glass powder, inorganic oxide powder, and resins that are dispersed in an organic solvent to achieve the required functionality. It is used for electrodes, resistors, and insulators in small electronic components.

Thick-film pastes must meet requirements such as electrical performance, uniform dispersibility, smoothness and adhesion during drying, and controlled shrinkage during sintering. Sumitomo Metal Mining has both the metal-powder manufacturing technology and the paste formulation technology to produce Thick-film pastes that is tailored to each customer's application.

*TCR (Temperature Coefficient of Resistance):
TCR indicates how much a resistor's resistance changes as temperature varies. A smaller TCR value means the resistance stays more stable despite temperature changes; therefore, electronic devices are less affected by temperature.

**ESD (Electrostatic Discharge):
ESD is the sudden release of accumulated static electricity, which can damage electronic components and circuits. Managing ESD is important in the design and manufacturing of electronic devices.

Sumitomo Metal Mining's main Thick-film pastes lineup includes chip resistor pastes that are widely recognized as industry standards, electrode pastes customized to customer requirements, and conductive adhesives for die-attaching chip components in IC* and LED assemblies.

We also develop Thick-film pastes tailored to specific customer requirements.
・Conductive Paste: Forms conductors using conductive metals such as Au, Ag, Pd, Ni, and Cu.
・Resistive Paste: Forms resistors that contain Ru.
・Insulating Paste: Forms insulators that protect circuits, mainly using glass or resin.
・Resin Paste: Leaves resin after curing to provide adhesion.

If our standard lineup does not meet your requirements, please contact us for custom solutions.

*IC (Integrated Circuit)
An IC combines passive and active components inseparably on a single substrate.

For detailed product information and specifications, download the data sheets below.

Thick-film pastes are used for electrodes, resistors, and insulators in small electronic components. Our lineup includes chip resistor pastes that are widely recognized as industry standards, electrode pastes customized to customer requirements, and conductive adhesives to die-attach chip components in IC and LED assemblies.

As mobility and IoT applications spread, demand has grown for reliable electronic components that can perform under extreme temperatures. Resistors play an important role in these components, handling tasks such as current control, voltage distribution, and signal processing.

By combining the properties of metals and semiconductors, the TCR value of a resistor can be stabilized, which makes it suitable for a wide range of uses.

High-precision TCR-resistive pastes from Sumitomo Metal Mining delivers stable performance over a wide temperature range. This paste is suitable for mobility-related electronic components and many other applications. See the case studies for specific examples of TCR control.

Stabilizing Electronics in Harsh Temperatures