High-frequency patch resistor and manufacturing method thereof
A chip resistor, high-frequency technology, applied in resistors, trimmer resistors, resistor parts and other directions, can solve the problem of the small resistance adjustment range of high-frequency resistors, the difficulty of technical process control, and the difficulty of technical achievability and other problems, to achieve the effect of reducing cross-sectional area, large resistance adjustment range, and high-efficiency manufacturing
Inactive Publication Date: 2010-12-22
四平市吉华高新技术有限公司
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Problems solved by technology
An obvious defect is that such an inscribed cut is limited for reducing the cross-sectional area of the high-frequency resistor body. Therefore, the resistance adjustment range of the high-frequency resistor with an inscribed cut is small, especially for low initial impedance The resistor body adjusts its resistance value through an inscribed method, and its characteristic impedance will hardly meet the requirements of the expected target impedance
Furthermore, it is relatively difficult to control the technical process of the internal cutting method, and there are difficulties in technical feasibility
Method used
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[0042] See eg figure 1 , figure 2 , image 3 , Figure 4 , Figure 9 with Figure 14 As shown, the high-frequency chip resistor provided by the present invention includes a substrate 1 , a back electrode 2 , a surface electrode 3 , a resistor 4 , a protective layer 5 , an outer protective layer 6 and a first side conductive electrode 7 .
[0043] Among them, the substrate 1 is preferably made of aluminum nitride, beryllium oxide or 96-99% alumina ceramics;
[0044] The back electrode 2 is arranged on the lower surface of the substrate 1 , and is preferably printed on the back of the substrate by thick film screen printing, covering at least a part of the lower surface of the substrate 1 . The back electrode 2 provides the function of partially carrying the welding, which increases the reliability of the welding, and also facilitates the adoption of auxiliary heat dissipation measures.
[0045] The surface electrode 3 is arranged on the upper surface of the substrate 1, ...
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The embodiment of the invention discloses a high-frequency patch resistor which comprises a substrate, a back electrode, a surface electrode, a resistor body and a first lateral conducting electrode, wherein in order to enable characteristic impedance to be matched with anticipatory target impedance, the resistor body is provided with an external cutting notch, i.e. cutting is started from the edge of the resistor body, the partial area of the resistor body is directly cut off from the resistor body, and the cross-sectional area of the resistor body can be decreased to a greater degree, so that the high-frequency patch resistor has a larger resistance-adjusting range and is beneficial to the matching of the characteristic impedance of the characteristic impedance resistor and the anticipatory target impedance. The invention also provides a manufacturing method of the high-frequency patch resistor to manufacture the high-frequency patch resistor with the larger resistance-adjusting range. The high-frequency patch resistor provided by the invention is suitable for microwave radio-frequency structures and chipping, and meanwhile, the high-frequency patch resistor can be manufactured in large scales and with high efficiency by utilizing the manufacturing method of the high-frequency patch resistor provided by the invention.
Description
technical field [0001] The present invention relates to the technical field of resistors, more specifically, to a high-frequency resistor and a manufacturing method thereof. Background technique [0002] Chip resistors, also known as chip-type fixed resistors, generally have the characteristics of moisture resistance, high temperature resistance, high reliability, uniform dimensions, and are suitable for surface mount technology (SMT for short). Because it can greatly reduce the size of the product, chip resistors have been widely used in various electrical appliances. High-frequency chip resistors are a type of basic electronic components used in microwave high-frequency communication circuit components. [0003] In the manufacturing process of high-frequency resistors, the initial impedance of the resistor is generally lower than the target impedance. In order to make the characteristic impedance of the high-frequency resistor reach the expected target impedance value, ac...
Claims
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IPC IPC(8): H01C1/00H01C17/24
Inventor 张飞林
Owner 四平市吉华高新技术有限公司
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