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FUJIKURA EUROPE LTD
ELECTRONICSPRODUCTS
FUJIMETAX
Fujimetax
Click here for a PDF datasheet
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Features:
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Specification and Properties
| Construction |
Metal core |
Decarburised steel | |
| Insulation layer | Alkali-free crystallised porcelain enamel | ||
| Dimensions | Maximum size | 300x300mm | |
| Thickness | Core | 0.4~1.6mm | |
| Insulation | 0.1~0.2mm | ||
| Meniscus | <50µm | ||
| Hole diameter | f(core thickness)-0.1mm | ||
| Hole-to-hole pitch | f2.5mm | ||
| Mechanical properties | Permissible bending radius | 400mm (core 0.7mm, insulation 0.15mm) | |
| Micro Vickers hardness | Hv700 (200g load) | ||
| Thermal properties | Maximum re-firing temperature | 850°C | |
| Thermal expansion coefficient (linear) | 11~14x10-6/°C | ||
| Thermal Conductivity | Core | 0.7W/cm.°C | |
| Insulation | 0.014W/cm.°C | ||
| Electrical properties (25°C, in dry air) | Bulk resistivity | >1015 .cm |
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| Surface resistivity | >1015/cm2 |
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| Dielectric strength | >1kV | ||
| Dielectric constant | 7.5~8.5 (100Hz~10MHz) | ||
| Dissipation factor | 0.005~0.01 (100Hz~10MHz) | ||
| Surface roughness | Ra | 0.2~0.4µm
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| Meniscus | <50µm | ||
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compared with conventional resin or ceramic substrates, the porcelain enamelled steel board has higher heat dissipation properties due to the outstanding heat transfer characteristics of the metal core |
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the metal core supplies high mechanical strength to the board, with increased shock and torsion resistance. Furthermore, it is possible to mount the board directly, e.g. to a housing |
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consisting of crystallised enamel, the enamel layer demonstrates a much higher melting temperature than usual thick film firing temperatures. A combination of metal core and thin porcelain enamel layer provides a high thermal shock resistance |
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with the metal core punched or bent by means of a press, it is possible to manufacture any substrate whose configuration is too complicated and difficult to make with a ceramic board |
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both the metal core and enamel insulation layers are made of non-combustible inorganics |
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the metal core serves as an electrostatic shield and, if the core is made with magnetic materials (typically low carbon steel) it may also be used as a magnetic shield or circuit |
