Semiconductor Equipments

Zirconia Toughened Alumina Substrates

Zirconia Toughened Alumina Substrates

■Well controlled surface roughness with homogeneous and fine microstructure ■50% higher bending strength than Alumina or AlN substrates. ■20% higher thermal conductivity than alumina substrates. ■Higher optical reflectivity than alumina substrates. ■Higher electrical insulation and smaller dielectric constant than alumina substrates.

Aluminum Nitride (AlN) Substrates

Aluminum Nitride (AlN) Substrates

MARUWA has started to produce Aluminum Nitride (AlN) substrates since 1985 and has developed its performance. With both extremely high thermal conductivity (170-230W/mK) and insulating properties. MARUWA's AlN substrate can be the best solution in electronics applications where strict conditions are required, such as power modules (MOSFET, IGBT), LED packages for cooling and protecting circuits, packages and modules. ■High thermal conductivity (170-230W/mK), up to 9.5 times than that of Alumina ■Similar coefficient of thermal expansion to that of silicon (Si). This helps to achieve high reliability of Si chip and thermal heat cycling ■Higher electric insulation, and Smaller dielectric constant ■Higher mechanical strength (450MPa). ■Superior corrosion resistance against molten metal. ■Very high purity, no toxicity.

Ferrite Magnets

Ferrite Magnets

MARUWA manufactures ferrite magnets from the material phase to magnetization. They are used mainly in automotive/magnetic medical application and sensor.

Aluminum Nitride (AlN) Components

Aluminum Nitride (AlN) Components

With high thermal conductivity, high wear and corrosion resistance, Aluminum Nitride (AlN) is the most ideal material for the semiconductor and medical industries. Typical applications include: heaters, electrostatic chucks, susceptors, clamp rings, cover plates and MRI equipment. Based on a depth of material engineering and development, MARUWA offers a wide range of technical capabilities and dependable mass-production capacity to meet customer’s requirements in the most advanced fields of semiconductor and medical applications.

RS Series

RS Series

RS Series (Stacked Type Ceramic Capacitors) consist of a stack of MARUWA's multilayer ceramic capacitors. These stacked capacitors take up the same board space as one standard chip capacitor, making it an ideal replacement for Aluminum electrolytic capacitors in applications such as compact, high frequency switching power supply.

XC Series

XC Series

They are high voltage capacitors which has rated voltage ~5kV. Low dielectric loss, and wide range of capacitance in small size.

BCF Series, BSF Series, BCS Series

BCF Series, BSF Series, BCS Series

Block type ceramic capacitors with high capacitance / high pressure-resistant (630V/2.2μF~50V/350μF). They achieve large ripple current capacitance by low ESR, and high frequency characteristics by low ESL. Specifications can be customized,

CVH Series

CVH Series

They are for high voltage circuits. The zinc oxide material ensures excellent nonlinearity and response. They can be used for AC100Vrms and AC200Vrms power lines. This series can support varistor voltage up to 470V. They are compact and can be surface mounted. Operating temperature range : -40℃~+85℃.

CNH Series

CNH Series

These items are Chip Type 3-Tarminal Capacitors which are best for high frequency noise reduction of DC power lines. Effective noise reduction in wide range of frequency bands with our lineup; small size/ high capacitance. CNH 10 and 20 Series are easy to handle since they do not have specific rules for mounting direction. CNH 20, 31, 30 and 32 series support the large current specification (~ 6A), and are effective in protecting the DC power line from EMI. Technologies of multilayer chip type ceramic capacitors have been applied to this 3-terminal structures, and they support surface mount technlogies.

Feed Through Ceramic Capacitors (SMD) CTH Series

Feed Through Ceramic Capacitors (SMD) CTH Series

Feed through Capacitors are ideal for high frequency noise reduction of large current circuits. The structure is simple; multilayer electrodes which are low resistance are formed on dielectric ceramics. The structure will hardly allow residual inductance, and the self resonant frequency extends to the microwave band. The multilayer electrode structure excels in solder heat resistance and solderability.

Feed Through Ceramic Capacitors PLE Series

Feed Through Ceramic Capacitors PLE Series

These feed through type ceramic capacitors consist of dielectrc ceramics and multilayer electrodes. Therefore, they have very low residual inductance. Their resonance frequency reach the microwave band, and offer superior performance in removing unnecessary high frequency noise. There is only a minimum change of characteristics by soldering and severe thermal cycles. When they are assembled into shield cases, both shielding and filtering can be achieved. Therefore, they will be very effective for superior EMC control. Suitable to be assembled into connectors due to the small size.

Screw Type EMI Filters FTA Series

Screw Type EMI Filters FTA Series

For this series, a feed through type ceramic capacitor with an extremely high self-resonating frequency is soldered into a shielded case with screw, and sealed with resin. They are extremely small, and highly reliable. They are suitable for preventing high frequency wrap and unnessesary radiation.

PMZ AMV Series

PMZ AMV Series

The PMZ series is the noise countermeasure part of the SMD type the core of which was ferrite rawmaterials. It has the characteristic which is excellent about the noise depression-effect about the DC power line of each electronic device.For the hi-reliability part, it is possible to use in the +155℃ environment. ●It supports at 1 block to Normal mode & Differential mode & Common mode noise. ●Compact and achieve large allowable current, and can be used for DC power supply line. ●It is applicable with the +155℃ environment. ●AEC-Q200 compliant. ●Because the terminal has flexibility, it becomes the structure which is strong in the temperature cycle. (1000 cycles of temperature cycles support.)

DNM Series

DNM Series

Highly efficient block type EMI filters effectively combines feed through capacitors, multilayer ceramic capacitors with large capacitance, and impedance components. They are used for power lines. Since current channels have no internal connection, the EMI filters achieve large allowable current, and can be used for DC lines up to 15A. It offers efficient EMI control by 1 block for both plus and minus lines on common DC power lines.They will give you a large insertion loss characteristics within a wide band.

Multilayer Chip Beads (Power Supply Line)

Multilayer Chip Beads (Power Supply Line)

These chip beads' Rdc are lowered from usual chip beads for signal lines. They increase the allowable electric current, and it is possible to reduce the noise for electric power lines, such as IC. They have high reliability due to monolithic structure with inorganic materials. Closed magnetic circuit configuration avoids crosstalk, and is suitable for high density mounting. Resistance elements (R) is used as impedance charactristics, therefore it is possible to block or attenuate noise by inserting in series on noise conduction path. Nickel and tin plated barrier terminals offer good solderability and resistance to soldering heat. There are 3 types; maximum rated voltage 2.5A, 1.0A, and 6A, depends on the power line capacity.

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