Tantalum capacitance full name is tantalum electroanalysises capacitance (also someone calls tantalum qualitative capacitor) , belong to electroanalysis a kind of capacitance, use metal Tantalum makes medium, unlike general electrify solves capacitance to use electrolyte in that way, because this suits to work below high temperature, it is the bulk in capacitor small and the product that can obtain bigger capacitance, rare on the utility such as bypass of wave of power source filter, communication competitor.

 

 

Tantalum capacitance itself does not have inductance almost, but the size that this also limitted it. In addition, because tantalum capacitance interior does not have electrolyte, suit to work below high temperature very much.

 

The characteristic of tantalum capacitance is life long, high temperature resistant, accuracy tall, filter is high frequency harmonic performance is wonderful. Electroanalysis in tantalum in capacitor job process, have be repaired automatically or the function that the defect in isolation oxidation film is in, oxidize film medium gets consolidate is mixed at any time restore its due insulation ability, and do not send suffer successive accumulation the gender is destroyed. Function of this kind of distinctive self-healing, made sure its grow the advantage of life and dependability.

 

Tantalum electroanalysises capacitor has strength of very high working electric field, more congener model capacitor is big, assure its miniaturization with this.

 

 

Lesser, price also compares the size aluminous capacitance is expensive, and proof voltage and voltaic ability are weaker. It is applied at the place of wave of high capacity filter, insert the figure that tantalum capacitance sees near groove like CPU, be the same as capacitance of pottery and porcelain more, capacitance cooperates to use or electroanalysising is to apply at the place with not voltage, great electric current.

 

 

Polymer capacitance is to use the polymer material of tall electrical conductivity to fold an aluminium to electroanalysis as a type of cathode capacitor, have surmount existing liquid piece type aluminium electroanalysises capacitor and solid piece type Tantalum electroanalysises the outstanding report function of capacitor. Polymer capacitance is inside rated voltage limits, need not step-down is used.

 

Have resistance of extremely low equivalent series connection (ESR) , reduce ripple voltage capacity strong, allow to carry bigger ripple electricity. Polymer piece type folds an aluminium to electroanalysis capacitor is in high frequency below, impedance curve presents character of approximate and ideal capacitor. In frequency metabolic circumstance falls, capacitance is very stable. This kind of capacitor basically applies at advocate board (switching equipment of monitor of notebook computer, flat, number) bypass goes Ou / store transformer of power source of filter wave capacitance, switch, DC/DC, can high frequency noise restrains circuit and portable electron equipment to wait.

 

 

Polymer Tantalum capacitance and standard Tantalum capacitance contrast watch

 

 

1, can use below the rated voltage of 80%~90%

 

 

2, lower failure rate

 

 

3, do not burn failure mode

 

 

4, exceed resistance of low equivalent series connection (ESR)

 

 

5, polymer cathode technology is had high frequency answer effect (100uF holds a cost)

 

 

6, application and cost are compared (have lower cost)

 

In the use amount below identical circuit condition

 

7, cost is compared