Specific differences and characteristics between ultracapacitors and ordinary capacitors

Based on the material properties of the capacitor, it can be divided into the following categories:

1, aluminum electrolytic capacitor

0.1 uF - 22000 uF capacitance range, high ripple current, long life, large capacity of choice, is widely used in power supply filter, lotus root, etc.

2, film capacitors

0.1 pF - 10 uf capacitance range, with smaller tolerance, high stability and low capacity of piezoelectric effect, thus is X, Y and safety capacitor, EMI/EMC's first choice.

3, tantalum capacitor

2.2 uF - 560 uF capacitance range, low equivalent series resistance (ESR) and low equivalent series inductance (ESL).Ripple absorption, transient response, and noise suppression are better than that of the aluminum electrolytic capacitor, is the ideal choice for high and stable power supply.

4, ceramic capacitor

0.5 pF - 100 uf capacitance range, unique materials and the crystallization of membrane technology, to cater to today's "lighter, thinner, more energy efficient," the design concept.

5, super capacitor

Capacitance range of 0.022 F - 70 F, high value, so also known as the "gold capacitance" or "farad capacitor".Main features are: high value, good charge/discharge characteristics, suitable for electric energy storage and backup power supply.Defect is low pressure, working temperature range is relatively narrow.

Normally only in the electrolytic capacitor - 20 ℃ ~ + 70 ℃ within the scope of use.Features much affected by temperature and frequency.In general are frequently used aluminum electrolytic capacitors.Aluminum electrolytic capacitor model is commonly CDXX, capacity, compression, positive negative markers on the shell.Sometimes also with the length of the wire, long term is positive, the short term is negative.

Electrolytic capacitor and capacitors difference:

Electrolytic capacitor:

Electrolytic capacitor generally have positive and negative, which has a polarity.So in the circuit when using positive and negative can't wrong.Can now make non-polarity or electrolytic capacitor used in ac circuits, called bipolar electrolytic or non-polar capacitors.Under the action of applied voltage, for some reason and cause local damage to the device, have the function of the fix itself, this phenomenon is called self-healing of electrolytic capacitors.

Normally only in the electrolytic capacitor - 20 ℃ ~ + 70 ℃ within the scope of use.Features much affected by temperature and frequency.In general are frequently used aluminum electrolytic capacitors.Aluminum electrolytic capacitor model is commonly CDXX, capacity, compression, positive negative markers on the shell.Sometimes also with the length of the wire, long term is positive, the short term is negative.

Normally only in the electrolytic capacitor - 20 ℃ ~ + 70 ℃ within the scope of use.Features much affected by temperature and frequency.In general are frequently used aluminum electrolytic capacitors.Aluminum electrolytic capacitor model is commonly CDXX, capacity, compression, positive negative markers on the shell.Sometimes also with the length of the wire, long term is positive, the short term is negative.

The wastage of the aluminum electrolytic capacitor is bigger, temperature and frequency characteristic is poor, limit the application to ac circuits.

3.Tantalum electrolytic capacitor:

Tantalum electrolytic capacitor is made electrode metal tantalum, tantalum oxide as dielectric capacitor.Features are: high chemical stability, high rated pressure, high temperature resistant performance is good, high mechanical strength, small volume.Commonly used CA logo, its capacity from 0.47 uF to 1000 uF, rated pressure are 6.3 V, 10 V, 16 V, 63 V.Performance is far better than that of the aluminum electrolytic capacitor, but the price is more expensive.

Other electrolytic capacitor and columbium electrolytic capacitor, better performance, smaller.Titanium electrolytic capacitor, tantalum and niobium electrolytic capacitor.

Normally only in the electrolytic capacitor - 20 ℃ ~ + 70 ℃ within the scope of use.Features much affected by temperature and frequency.In general are frequently used aluminum electrolytic capacitors.Aluminum electrolytic capacitor model is commonly CDXX, capacity, compression, positive negative markers on the shell.Sometimes also with the length of the wire, long term is positive, the short term is negative.

Four.Tiny capacitors:

1.Chip ceramic capacitor, the capacitor table.Capacity range is 1 ~ 47800 pf, pf pressure to 25 v and 50 v.Package installation dimensions and table put a resistor.

2.Chip tantalum capacitor: small size, large capacity.Welding temperature limit under 280 ℃, time less than 10 s.The scope of its capacity of 0.1 uF - 100 uF, the dc voltage is 4 ~ 50 v, commonly used pressure of 16 v, 35 v, etc.

3.Electric double layer capacitors: betweenThe batteryAnd the capacitance between, has large capacity, is called a super capacitor.Normally only used for dc or low frequency condition, often used as energy storage element.

4.Semiconductor capacitor:

Normally only in the electrolytic capacitor - 20 ℃ ~ + 70 ℃ within the scope of use.Features much affected by temperature and frequency.In general are frequently used aluminum electrolytic capacitors.Aluminum electrolytic capacitor model is commonly CDXX, capacity, compression, positive negative markers on the shell.Sometimes also with the length of the wire, long term is positive, the short term is negative.

Five.Trimmer and variable capacitor:

1.Also called half adjustable capacitor fine-tuning capacitor, the capacity of between 5 ~ 45 pf.It is a lot of more phyletic, common has the following several kinds:

1) ceramic dielectric padder: characteristic is wear-resisting, long service life.

2) tube type padder: also known as thread trimmer, one-time use.Commonly used in the radio.

3) mica padder: small volume, often used in the radio.

Normally only in the electrolytic capacitor - 20 ℃ ~ + 70 ℃ within the scope of use.Features much affected by temperature and frequency.In general are frequently used aluminum electrolytic capacitors.Aluminum electrolytic capacitor model is commonly CDXX, capacity, compression, positive negative markers on the shell.Sometimes also with the length of the wire, long term is positive, the short term is negative.

4) barrel type padder: complicated structure, high precision.

5) film dielectric padder, and mica padder structure is the same, just different medium, smaller.There are double products.

6) special shortwave padder: dedicated to radio short-wave frequencies, variation range is small, only 2.2 pF, but life is long, for more than 10000 times.

The page contains the contents of the machine translation.