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            JEFA-杰發電子 固態使用注意事項8

            發布時間:2017-08-29   發布人:杰發編輯部

            一、固態鋁電容的特性:


            The characteristics of Conductive polymer aluminum solid capacitors

            1、極性 Polar:

            固態鋁電容器具有正負極之分,不能反接,否則易導致漏電流急劇增加、或者降低其使用壽命。

            Conductive polymer aluminum solid capacitors with positive and negative points, can not reverse, otherwise easily lead to the leakage current increases dramatically, or reduce its service life.


            2、禁止用于以下電路 Forbade to use following circuit:

            (1)高阻抗電路

            High impedance circuit

            (2)耦合電路

            Coupling circuit

            (3)時間常數電路

            The time constant of the circuit


            3、工作電壓 Working voltage:

            (1)直流電壓與紋波峰值電壓的總和,不得超過額定工作電壓

            The sum of DC voltage and peak voltage, shall not exceed the rated working voltage

            (2)當直流電壓比較低的時候,反向紋波峰值電壓不能超過額定工作電壓的 10%

            When DC voltage is low, the reverse ripple peak voltage should not exceed the rated working voltage of 10%

            (3)對于25v以上產品,當環境溫度超過85℃時,請降壓使用固態鋁電容 ;溫度每上升10℃,施加于產品上的電壓請下降10%

            For more than 25V products, when the environment temperature is over 85 ℃, please reduce the use of voltage ; temperature rise by 10 ℃, The voltage is applied to the product. Please drop 10%


            4、瞬時充放電 Instantaneous discharge:

            瞬時充放電可能導致固態鋁電容短路或漏電流增大,因此在以下情形需設計保護電路:

            The instantaneous discharge may result in solid aluminum capacitor short circuit or leakage current increases,so in the following circumstances required the protection circuit design:

            (1)沖擊電流大于10A

            The impact of current greater than 10A

            (2)沖擊電流大于10倍允許紋波電流值

            The impact of current is more than 10 times the allowable ripple current value

            (3)在測試產品漏電流時,請設置一個1KΩ的保護電阻

            When test the leakage current of product, please protect the resistance to set a 1K.

            高分子固態電容器 Conductive polymer aluminum solid capacitors



            5、常見的失效模式 The common failure mode :(1)偶然失效 Random failure:

            主要由電路的短路導致,當短路電路中的電流超過1A,電容內部溫度將會上升,內部壓力增大封口橡膠將會凸起甚至開啟,電容會因此釋放出有害氣體,此時需立刻斷開電路并離開這個場合另外還有超電壓使用、超高溫使用、超額定紋波電流使用,都會導致產品提前失效甚至短路。

            Mainly caused by the short circuit, when the current short circuit in more than 1A, the internal temperature will increase the internal pressure increases, the capacitance, sealing rubber will be raised even opened, capacitor will release harmful gases, at this time should immediately disconnect the circuit and leave this place. In addition, the use of high voltage using high temperature,high rated ripple current use, will lead to product failure ahead even short circuit。

            (2)壽命失效 Life failure:

            經過長時間使用后,固態鋁電容的特性會發生衰減,例如容量下降、ESR上升等當使用時間超過額定壽命,電容的特性將劣化,可能導致電解質絕緣形成開路。

            After a long time after use, characteristics of capacitor will decay, such as capacity decreased, ESR increased, when the time exceeds the rated life, capacitance will deteriorate, may lead to electrolyte insulation open。

            6、電容壽命估算 Capacitor life estimation:

            T0 - TX

            L=L0×10 20

            (1)L:某溫度下的預期壽命(h)

            L:At a certain temperature life expectancy(h)

            (2)L0:額定壽命(h)

            L0:rated life(h)

            (3)T0:最高額定溫度 (℃)

            T0:The maximum rated temperature (℃)

            (4)TX:實際環境溫度 (℃)

            TX:The actual environment temperature ( ℃)

            7、固態鋁電容的優越性 The superiority of the conductive polymer aluminum solid capacitor:

            (1)低等效串聯電阻 = 降低溫度,穩定

            Low equivalent series resistance = lower temperature, stability

            (2)耐高紋波電流 = CPU,Memory,PCI Express電源模組設計的最佳選擇

            High ripple current = CPU, Memory, PCI best choice Express power module design

            (3)高低溫度變化下依然穩定

            High and low temperature changes remains stable

            (4)高可靠度

            High reliability

            (5)較長的壽命

            A longer life

            (6)不會漏液、爆漿、燃燒

            No leakage, explosion, burning

            高分子固態電容器 Conductive polymer aluminum solid capacitors



            二、特別提醒 Special remind:1、漏電流 Leakage current:
            (1)焊接熱、運輸途中的機械應力,都可能導致電容的漏電流增大

            Mechanical welding heat, transport stress, may cause the leakage current of the capacitor.

            (2)但是,給產品施加不超過額定工作電壓的直流電壓時,漏電流會逐漸降低

            However, applying a DC voltage does not exceed the rated working voltage to the product, the leakage.

            (3)在不超過額定工作電壓、額定上限溫度的前提下,施加電壓越高、環境溫度越高,漏電流下降速度越快

            current will decrease, On the premise of not more than the rated voltage, rated maximum temperature, with the increase of applied voltage, the higher the ambient temperature, the leakage current decreases faster.

            2、固態鋁電容的絕緣性 Insulation of conductive polymer aluminum solid capacitors:

            (1)固態鋁電容外的絕緣鍍膜并不是絕對絕緣的,另外鋁殼與負極引出線之間不絕緣

            conductive polymer aluminum solid capacitors insulating coating is not insulated completely, the aluminum shell and the negative lead wire not insulated .

            (2)安裝的時候,請務必將鋁殼、正負導針及PC板印刷圖完全隔離開

            When installing, please be sure to aluminum shell, positive and negative lead wire, PCB board completely separate.

            3、工作環境的限制 Working conditions limit:

            (1)有水、鹽水、油可以直接滴落的地方,以及容易發生收縮的電路板,禁止使用

            Water, salt water, oil can be directly from the local, as well as prone to circuit board contraction, the prohibition of the use of.

            (2)有害氣體(H2S、硫酸、硝酸、氨氣、鹽酸等)聚集的場合,禁止使用

            Harmful gases (H2S, sulfuric acid, nitric acid, ammonia, hydrochloric acid) aggregation of the occasion, the prohibition of the use of .

            (3)紫外線、放射性射線、臭氧等輻射的場合,禁止使用

            Ultraviolet radiation, ozone, radiation such occasions, the prohibition of the use of.

            4、PCB板設計 PCB board design:

            (1)不要將固態鋁電容安裝于熱源組件周圍或其上面

            Don't be conductive polymer aluminum solid capacitors mounted on a heat source component around or above it.

            (2)PCB板上的安裝孔位,直徑和間距要與電容導針的直徑和針距相匹配

            The PCB board installation hole, diameter and spacing to diameter and capacitance guide needle and needle distance matching.

            5、并聯電路 Parallel circuit:

            當固態鋁電容與另一液態鋁電容并聯時,由于固態電容具有低得多的ESR值因此,可能會有很大的紋波電流施加在固態電容上,這種情況下請謹慎選擇電容規格。

            When the conductive polymer aluminum solid capacitor in parallel with another liquid aluminum capacitors, because the solid capacitor has a much lower ESR value, therefore, may have a ripple current great applied in solid capacitors, this case please choose carefully capacitor specifications.


            Shape Cutting & Forming Methods 6.3Φ 10Φ 13Φ 16Φ 18Φ 22Φ
            F 1.5 2 2.5 3.5 5 5 7.5 7.5 10
            A Lead Cut Only(切直腳) H 5 5 5 5 5 5 5 5 5
            d 0.45 0.5 0.5 0.6 0.6 0.6 0.8 0.8 0.8
            F 5 5 5 5
            H 4 5 5 5
            B Lead Cut and Form(成型切直腳) d 0.45 0.5 0.5 0.6
            F 5 5 5 5
            H1 4 5 5 5
            C Lead Cut,Crimp and Form H2 1.8 1.8 1.8 1.8
            (成型切波浪腳) d 0.45 0.5 0.5 0.6
            F 5 5 7.5 7.5 10
            H1 5 5 5 5 5
            D Lead Cut and Crimp(切波浪腳) H2 1.8 1.8 1.8 1.8 1.8
            d 0.6 0.6 0.8 0.8 0.8
            Facing negative mark Lead Cutting and F 3.5 5 5 7.5 7.5
            E Bending 900 turn right (BR). H 9
            (面向負極線,向右90度折彎后切腳) d 0.6 0.6 0.6 0.8 0.8
            Facing negative mark Lead Cutting and F 3.5 5 5 7.5 7.5
            F Bending 900 turn left (BL). H 9
            (面向負極線,向左90度折彎后切腳) d 0.6 0.6 0.6 0.8 0.8



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