A kind of back pressure resistant chip tantalum capacitor and its making method
A technology of tantalum capacitors and manufacturing methods, which is applied to capacitor terminals, capacitor components, etc., can solve problems such as inability to withstand reverse voltage, and achieve the effects of improving performance reliability and service life, excellent and stable performance, and small size
Active Publication Date: 2018-05-15
ZHUZHOU HONGDA ELECTRONICS
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Problems solved by technology
[0004] The purpose of the present invention is: in order to overcome the problem that the existing chip tantalum capacitors cannot withstand reverse voltage, the present invention provides a reverse pressure tolerant chip tantalum capacitor and its manufacturing method. The capacitor has small volume, excellent and stable performance, and can withstand reverse voltage
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[0020] Such as figure 1 and figure 2 As shown, a anti-reverse pressure chip tantalum capacitor includes a shell, a tantalum core block 4 located in the shell, a negative lead piece 3, a tantalum wire 5 connected to the tantalum core block, a positive lead piece 6 connected to the tantalum wire, Epoxy resin 7, unidirectional conductive film 1, the unidirectional conductive film is bonded on the tantalum core block through silver paste 2, the negative lead piece is connected to the unidirectional conductive film, and the ring is filled between the shell and the tantalum core block oxygen resin.
[0021] In the present invention, on the basis of the traditional manufacturing method of chip tantalum capacitors, when assembling the anti-reverse pressure chip tantalum capacitors, a layer with isolation and anti-reverse The unidirectional conduction film with voltage function has the function of isolating the reverse voltage. In the circuit with a large ripple voltage or a certain...
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The present invention discloses a reverse voltage resistance type chip tantalum capacitor and a manufacturing method thereof. The manufacturing method of the reverse voltage resistance type chip tantalum capacitor is that: one layer of unidirectional conductive film with a function of reverse voltage isolation is arranged between a tantalum core block and a negative wire chip so as to prevent a capacitor dielectric film from being damaged in a circuit of a ripple voltage or a reverse voltage when the reverse voltage resistance type chip tantalum capacitor is assembled, wherein, a cathode layer is formed on the tantalum core block. The reverse voltage resistance type chip tantalum capacitor includes a housing, the tantalum core block in the housing, the negative wire chip, a tantalum wire connected to the tantalum core block, a positive wire chip connected to the tantalum wire, an epoxy resin, and the unidirectional conductive film, wherein, the unidirectional conductive film is stuck on the tantalum core block through a silver paste, and the negative wire chip is connected with the unidirectional conductive film. The reverse voltage resistance type chip tantalum capacitor and the manufacturing method thereof can prevent the capacitor dielectric film from being damaged so as to increase a performance reliability and a service life.
Description
technical field [0001] The invention relates to the technical field of electronic components, in particular to the design and manufacturing technology of a chip tantalum capacitor capable of withstanding 3V reverse voltage. Background technique [0002] At present, with the development of electronic technology and military electronic components, as well as the needs of miniaturization, light weight and high performance of modern weapons and equipment, higher requirements are put forward for the performance reliability of electronic components. Chip tantalum capacitors are used as An important branch of tantalum electrolytic capacitors, widely used in mobile communications, notebook computers, handheld computers, computers, automotive electronics and other small electronic equipment surface mount equipment, but also in aviation, aerospace, satellites, missiles, marine (Ground) cables, communications and other military electronic equipment are widely used in the circuit. The ...
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IPC IPC(8): H01G9/008H01G9/048
Inventor 易金锋
Owner ZHUZHOU HONGDA ELECTRONICS