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高分子电容－POSCAP

产品简介

　　高安全性
　　由于电解质不含氧原子，发生短路时与使用二氧化锰电解质的电容器相比POSCAP不易燃烧，具有更高的安全性。　
　　低ESR和低阻抗　
POSCAP的高导电性实现了低ESR和低阻抗，与同等容量的其它电容器相比阻抗为1／3～1／10。

　　卓越的温度特性
POSCAP所用导电性高分子电解质的电导受温度影响小，因而，ESR基本上不受温度影响。　
　　更长的寿命
　　由于电解质被高分子固化，因而，具有长的寿命。较好的热稳定性不会出现采用电解液的铝电解电容器那样的电解液干涸现象。POSCAP在环境温度105℃和额定电压下，10000小时的高温负荷试验表明它的ESR及容量的特性变化很小。

　　卓越的自愈能力　
　　导电性高分子材料的有机物与二氧化锰无机物相比，在较低的300℃高温下就会出现热分解及绝缘化。因此，在短路的前兆阶段，即电流流过正极表面氧化绝缘层产生的焦耳热，会在氧化层微小的绝缘不充分部位形成导电性高分子绝缘层，阻碍电流通过达到自愈修复效果。卓越的自愈能力降低了短路因素，实现了在过冲击电流下的高可靠性，耐冲击电流保证至20A。

　　高耐热性
　　导电性高分子材料的耐热性高，可以达到无铅化回流焊的温度要求。
　　线路设计时应该注意，POSCAP是有极性的电容器，反向电压会造成漏电流加大或短路。另外，POSCAP即使在规范、规定的条件内进行回流焊，焊接后的漏电流也有可能变大。不施加电压的高温无负荷周期试验等也会引起漏电流加大，因此规定禁止在保持高阻抗线路、耦合线路、定时线路、漏电流会带来大的影响的线路、超出额定电压的串联线路使用。　
POSCAP虽然安全性较高，但是由于其故障模式为短路，因而万一发生短路后会出现发热和冒烟，发生冒烟的时间因短路条件的不同而为数秒或数分钟，设计上要使短路保护线路在此时间内工作。

Sanyo tantalum electrolytic capacitors, please consult the Shenzhen Electronics Co., Ltd. Cheng Light Exchange: http://www.cghdz.com



Polymer capacitor-POSCAP

Introduction

High Security
As the electrolyte containing no oxygen atom, a short circuit with the use of manganese dioxide electrolyte capacitors compared to POSCAP nonflammable, has a higher security.
Low ESR and low impedance
POSCAP of high conductivity to achieve low ESR and low impedance, and the same capacity as compared to other capacitor impedance is 1 / 3 to 1 / 10.

Excellent temperature characteristics
POSCAP conductive polymer electrolyte used in the conductance affected by temperature, small, and therefore, ESR essentially independent of temperature.
Longer life
As the polymer electrolyte was cured, and thus, have a long life.Better thermal stability will not be used as the electrolyte electrolyte aluminum electrolytic capacitors drying phenomenon.POSCAP 105 ℃ in ambient temperature and rated voltage, 10000 hours of high-temperature load test showed that ESR and the capacity of its properties changed little.

Excellent self-healing capabilities
Conductive polymer materials, organic and inorganic manganese dioxide than 300 ℃ in a lower thermal decomposition occurs under high temperature and insulation technology.Therefore, in the short-circuit the precursor stage, current flows through the insulating layer of oxide cathode the Joule heat generated will be small in the insulating oxide layer is not fully part of the formation of conductive polymer insulation layer to hinder current through the self-healing recovery effect.Remarkable ability to reduce short-circuit self-healing factors, achieved in the past, under the impact of current high-reliability, high impact current guaranteed to 20A.

High heat resistance
Conductive polymer materials, high heat resistance, can reach temperatures of lead-free reflow requirements.
Circuit design should be noted, POSCAP is polarized capacitors, the reverse voltage will cause increased leakage current or short circuit.In addition, POSCAP even in the specification, within the conditions prescribed reflow, the leakage current after welding may also be larger.Not impose high voltage without load cycle tests will lead to increased leakage current, so the prohibition on maintaining high impedance circuits, coupled circuits, timing circuits, leakage current will bring great influence on the line, beyond the rated voltage in series circuitsuse.
POSCAP Although the security is higher, but because of its short-circuit failure mode, so if fever after a short circuit and smoke, time of occurrence of smoke due to different short-circuit conditions for the seconds or minutes, is designed to make short-circuit protectionline at this time to work.

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