초록 ▼

An electrical component which has a base body that comprises a ceramic material and at least two contact regions arranged on the base body to which terminal elements are secured, is enveloped by a protective layer containing organic constituents, and has an intermediate layer that is arranged betwee

An electrical component which has a base body that comprises a ceramic material and at least two contact regions arranged on the base body to which terminal elements are secured, is enveloped by a protective layer containing organic constituents, and has an intermediate layer that is arranged between the base body and the protective layer and is composed of an intermediate layer material that is both hydrophobic as well as lipophobic. The intermediate layer can be advantageously composed of a fluoropolymer which is manufactured by immersing the base body into a fluid that dissolves this polymer. The moisture stability of the electrical component is critically improved by the intermediate layer. The components are particularly employed as hot-carrier thermistor temperature sensors.

대표청구항 ▼

The invention claimed is: 1. An electrical component comprising: a base body of a ceramic material, said base body having two contact regions connected to terminal elements, the terminal elements forming electrical poles enabling employment of a voltage on the ceramic material; an intermediate laye

The invention claimed is: 1. An electrical component comprising: a base body of a ceramic material, said base body having two contact regions connected to terminal elements, the terminal elements forming electrical poles enabling employment of a voltage on the ceramic material; an intermediate layer covering said base body and contact regions; and a protective layer on the intermediate layer, the intermediate layer having an interface with the protective layer, the intermediate layer consisting of a material selected from the group consisting of fluoropolymer and polyether, and the protective layer containing an organic constituent, wherein the intermediate layer is in direct contact with the base body. 2. A component according to claim 1, wherein the intermediate layer material is soluble in a fluid with which the base body can be moistened. 3. A component according to claim 2, wherein the intermediate layer is produced by immersing the base body into a solution that contains a fluid in which the intermediate layer material is dissolved. 4. A component according to claim 3, wherein the thickness of the intermediate layer amounts to at least 1.5 μm at the thinnest location. 5. A component according to claim 3, wherein the protective layer is composed of material that is electrically insulating and is suitable for protecting the intermediate layer against abrasion. 6. A component according to claim 5, wherein the protective layer is selected from a group consisting of epoxy resin, silicone and polyurethane. 7. A component according to claim 1, wherein the intermediate layer amounts to at least 1.5 μm at the thinnest location. 8. A component according to claim 1, wherein the protective layer is a material that is electrically insulating and suitable for protecting the intermediate layers against abrasion. 9. A component according to claim 8, wherein the protective layer is selected from a group consisting of epoxy resin, silicone and polyurethane. 10. A component according to claim 2, wherein the protective layer is selected from a group consisting of epoxy resin, silicone and polyurethane. 11. An electrical component according to claim 1, wherein the intermediate layer has a thickness which is at the most 5 μm thick. 12. An electrical thermistor component comprising: a base body of a ceramic hot-carrier thermistor material, said base body having two contact regions connected to terminal elements; an intermediate layer covering said base body and contact regions; and a protective layer forming an interface between the intermediate layer and the protective layer, the intermediate layer consisting of a material selected from the group consisting of a fluoropolymer and a polyether, and the protective layer containing an organic constituent, wherein the intermediate layer is in direct contact with the base body. 13. An electrical component according to claim 12, wherein the intermediate layer has a thickness which is at the most 5 μm thick. 14. An electrical component, comprising: a base body of a ceramic material, the base body having two contact regions connected to terminal elements, the ceramic material of the base body determining the electrical properties of the electrical component; an intermediate layer directly arranged on the base body and contact regions; and a protective layer directly arranged on the intermediate layer; the intermediate layer consisting of a material selected from the group consisting of fluoropolymer and polyether. 15. The component according to claim 14, wherein the protective layer comprises epoxy resin, silicone or urethane. 16. An electrical component, comprising: a base body of a ceramic material, the base body having two contact regions connected to terminal elements, the ceramic material of the base body determining the electrical properties of the electrical component; an intermediate layer directly arranged on the base body and contact regions; and a protective layer directly arranged on the intermediate layer; the intermediate layer comprising a material selected from the group consisting of fluoropolymer and polyether and being free of epoxy resin. 17. An electrical component according to claim 1, wherein the ceramic material of the base body comprises a thermistor material. 18. An electrical component according to claim 17, wherein the thermistor material comprises a polycrystalline ceramic of a spinel type. 19. An electrical component, comprising: a base body of a ceramic material, said base body having two contact regions connected to terminal elements; an intermediate layer with a wax-like consistency covering said base body and contact regions; and a protective layer on the intermediate layer, the intermediate layer having an interface with the protective layer, the intermediate layer consisting of a material selected from the group consisting of fluoropolymer and polyether and the protective layer containing an organic constituent, and wherein the intermediate layer is in direct contact with the base body.