WEE Technology Company Limited - WEE are Capacitors Specialist

WMA, WMB, WMC an WMD is constructed with metallized polyester film or metallized polypropylene film as medium and electricode, wrapped and sealed with flame-retardant plastic and yellow epoxy resin.
With high reliability, high temperature-resistance, small volume, large capacity and good self-healing property.
Mainly used in instruments and the DC &AC circuit of the household equipment and the fractional frequency circuit of acoustics system.

WMA Axial Metallized Polyester Film Capacitor (CYCLOIDAL ROUND SHAPE)
WMB Axial Metallized Polyester Film Capacitor (FLAT OVAL SHAPE)
Operating Temperature: -40°C~ +105°C
Rated Voltage: 100V, 250V, 400V, 630V.DC

WMB Axial Metallized Polypropylene Film Capacitor (CYCLOIDAL ROUND SHAPE)
WMD Axial Metallized Polypropylene Film Capacitor (FLAT OVAL SHAPE)
Operating Temperature: -55°C~ +100°C
Rated Voltage: 250V, 400V, 630V, 1000V, 1250V.DC

WEE Technology Company Limited - WEE are Capacitors Specialist

The intuitive way to distinguish WEET solid electrolytic capacitor and WEET liquid electrolytic capacitor is to check whether there is a "K" or "cross" shaped explosion-proof groove on the top of the capacitor. The top of the solid electrolytic capacitor is flat without explosion-proof groove. There is also a solid and liquid mixed type electrolytic capacitor, the explosion-proof groove on the top of which is shallow. In addition, liquid electrolytic capacitors generally have plastic skins of various colors. There are two packaging forms for electrolytic capacitor.

It is a common in-line package, which is cylindrical in shape, with two metal leads below as electrodes, installed vertically on the circuit board. Another way is to install the vertical main board with rubber base. This SMT chip type capacitor is easy to use in large-scale, high-density production, and can achieve efficient and fast welding, while occupying a small area on the main board. The main basis for distinguishing SMT chip type and direct plug-in capacitor is the plastic base at the lower end of the capacitor.

WEE Technology Company Limited - WEE are Capacitors Specialist

Solid aluminum polymer chip capacitor is a unique structure which combines the characteristics of aluminum electrolytic capacitor and tantalum capacitor. Like the electrolytic capacitor of liquid aluminum, the solid aluminum polymer is mostly in the form of chip. The polymer electrode film with high conductivity is deposited on alumina as cathode, and carbon and silver as lead out electrodes, which is similar to the structure of solid tantalum electrolytic capacitor.

Due to the use of a new type of solid electrolyte, solid-state electrolytic capacitors have excellent characteristics that cannot be matched by liquid electrolytic capacitors. These electrical properties are very important for improving the application of high frequency in computer system. The advantages of solid electrolytic capacitor over liquid electrolytic capacitor are mainly three points.

1. WEET Solid aluminum electrolytic capacitor has High stability than liquid electrolytic capacitors.

Solid aluminum electrolytic capacitor can work stably in high temperature environment, and the performance of main board can be improved directly by using solid aluminum electrolytic capacitor. At the same time, it is suitable for power filter because of its stable impedance in wide temperature range. It can effectively provide stable and abundant power supply, which is particularly important in overclocking.

Solid state capacitors can still work normally in high temperature environment, and maintain various electrical properties. The change of capacitance is less than 15% in the whole temperature range, which is obviously better than the liquid electrolytic capacitance. At the same time, the capacitance of solid-state electrolytic capacitor is basically independent of its working voltage, so as to ensure its stable operation in the voltage fluctuation environment.

2. WEET Solid aluminum electrolytic capacitor has longer life than liquid electrolytic capacitors.

The solid aluminum electrolytic capacitor has a very long service life (more than 50 years). Compared with the electrolytic capacitance of liquid aluminum, it can be regarded as "longevity". It will not be broken down, and there is no need to worry about the drying of the liquid electrolyte and leakage affecting the stability of the motherboard. Due to the lack of problems of liquid electrolyte, the solid aluminum electrolytic capacitor makes the main board more stable and reliable.

The solid electrolyte will not evaporate, expand or even burn like the liquid electrolyte in the high temperature environment. Even if the temperature of the capacitor exceeds its tolerance limit, the solid electrolyte will only melt, so that the metal shell of the capacitor will not burst, so it is very safe.

The working temperature directly affects the life of the electrolytic capacitor. The life of solid electrolytic capacitor and liquid electrolytic capacitor is significantly longer under different temperature environment.

3. WEET Solid Polymer aluminum electrolytic capacitor has lower ESR and high rated ripple current than than liquid electrolytic capacitors.

ESR (equivalent series resistance) refers to the series equivalent resistance, which is a very important indicator of capacitance. The lower ESR is, the faster the capacitor charging and discharging speed is. This performance directly affects the decoupling performance of the microprocessor power supply circuit. In the high-frequency circuit, the advantage of the low ESR characteristic of the solid-state electrolytic capacitor is more obvious. It can be said that the low ESR characteristic at high frequency is the watershed of the difference between the performance of solid electrolytic capacitor and that of liquid capacitor. The ESR of solid aluminum electrolytic capacitor is very low, and the energy dissipation is very small. Under high temperature, high frequency and high power conditions, the very low ESR characteristics of the solid-state capacitor can fully absorb the high amplitude voltage generated between the power lines in the circuit and prevent its interference to the system.

At present, the power consumption of CPU is very large, and the main frequency is far beyond 1GHz. At the same time, the peak current of CPU reaches 80A or more, and the output filter capacitance is close to the critical point. On the other hand, the CPU adopts multiple working modes, most of which are in the conversion process of working mode. When the CPU changes from low power consumption state to full load state, a large amount of energy required for instantaneous (generally less than 5 ms) switching of the CPU is from the capacitance in the CPU power supply circuit. At this time, the high-speed charging and discharging characteristics of the solid-state capacitance can output peak current in an instant to ensure sufficient power supply and stable operation of the CPU.

WEE Technology Company Limited - WEE are Capacitors Specialist

WEET WPA WPB SMD Radial Surface Mount and Radial Lead Polymer Aluminum Solid Electrolytic Capacitors

Composition and structure of aluminum electrolytic capacitor:

A. Anode foil: (aluminum metal foil) as anode, through corrosion and activation, forming oxide film as working medium; anode foil ≥ 99.97%

B. Anode foil: it plays the role of cathode extraction and is corrosion foil; cathode foil ≥ 97%

C. Electrolyte: it is the actual cathode, which can repair the oxide film;

D. Electrolytic paper: store electrolyte, insulate cathode and anode foil, and increase internal pressure;

F. Lead out strip (guide pin): it is used for connection and lead out, and the anode lead out strip needs to pass over 600V enabling;

G. Cover plate (leather head): for sealing and installation;

H. Aluminum shell: protect the core and play a fixed role;

1. Aluminum washer : it is used to connect the lead out strip and cover plate;

J. Sleeve and insulating gasket: play the role of insulation and make the appearance beautiful and tidy.

WEE Technology Company Limited - WEE are Capacitors Specialist

WEET WPA SMD Miniaturized Conductive Polymer Aluminum Solid Electrolytic Capacitors Features:
Low ESR Series, SMD Surface Mounted Type
High Ripple Current, miniaturized
SMD, lead free reflow soldering condition at 250℃ peak correspondence
Temperature Range (℃):-55°C~ +105°C
Rated Voltage Range (V): 2.5V ~ 100V.DC
Capacitance Tolerance (+20℃, 120Hz): ±20%, special tolerance on request.

WEET WPA SMD Miniaturized Conductive Polymer Aluminum Solid Electrolytic Capacitors Applications:
It is suitable for low voltage and high current applications, mainly used in digital products such as thin DVD, projector and industrial computer, etc., and also widely used in computer board products in recent years.

Also applicable to DC/DC converters and AC/DC converters, communication power supply, set-top boxes, router, TV, voltage regulator, mobile phone adapter (mobile phone charger), computer motherboard, graphics card, power supplies, CPU’s, Decoupling circuits and LCD Monitors and other commercial divices.

WEET WPA SMD Miniaturized Conductive Polymer Aluminum Solid Electrolytic Capacitors Advantages:

As the solid-state capacitor uses conductive polymer product as the dielectric material, the material will not interact with alumina and will not explode after being electrified; at the same time, it is a solid-state product, so there will be no burst due to thermal expansion. Solid Polymer capacitor has the advantages of environmental protection, low impedance, high and low temperature stability, high ripple resistance and high reliability. It is the highest level product in the current electrolytic capacitor products. As the solid-state capacitor e is far superior to the liquid aluminum capacitor, and the solid-state capacitor has a temperature resistance of 260 degrees, good conductivity, frequency characteristics and service life. 

WEE Technology Company Limited - WEE are Capacitors Specialist

WEET Conductive Polymer Aluminum Solid Electrolytic Capacitors with Chip SMD type and Radial Lead type. Due to different characteristics, Polymer Aluminum Solid Electrolytic Capacitors can be divided to Standard, Ultra-low ESR, Higher Capacitance, Long Life Assurance, High Voltage/Long Life Assurance, High Voltage/High Reliability series. Aluminum polymer electrolytic capacitors are the latest evolutionary step in improving the properties of aluminum electrolytic capacitors to make them more like a film capacitor.

Surface mount SMD type and Radial lead Polymer capacitors are produced in a similar production process to standard aluminum electrolytic capacitors(E-Cap). The main difference is the liquid electrolyte being replaced by a solid conductive polymer, usually soild conductive polymer is more stable in most applicatinos.

WEET Conductive Polymer Aluminum Solid Electrolytic Capacitors are widely used in various applications, which applicable to DC/DC converters and AC/DC converters, communication power supply, set-top boxes, router, TV, voltage regulator, mobile phone adapter (mobile phone charger), computer motherboard, graphics card, power supplies, CPU’s, Decoupling circuits and LCD Monitors.

WEET aluminum solid capacitor with high conductive polymer, which acquires low Equivalent Series Resistance (ESR), excellent noise reduction capability and frequency characteristics.

WEE Technology Company Limited - WEE are Capacitors Specialist
What is an audio film capacitor? Acoustic audio film capacitors are made of metalized polypropylene film, which works as the dielectric / electrode winding. The lead is made of tinned copper clad steel wire, the side is wrapped with polyester tape, and the ends are filled with epoxy resin. The performance is very outstanding, the self-healing performance is outstanding, and the high frequency loss is low.

A film capacitor is a capacitor in which a plastic film such as polyethylene, polypropylene, polystyrene, or polycarbonate is stacked from both ends and wound into a cylindrical shape. Its structure is the same as paper dielectric capacitor, and the medium is polyester or polystyrene. Polyester film capacitors have high dielectric constant, small volume, large capacity, and good stability. It is suitable for bypass electrical capacitance. Polystyrene film capacitors have low dielectric loss and high insulation resistance, but have large temperature coefficients and can be used in high-frequency circuits.

The high-frequency unit of the speaker is designed to improve high-frequency performance. Its voice coil and vibration part will be designed to be very lightweight, and the response to low-frequency signals is very low. 

Feeding a power signal with a too low frequency can easily cause damage to the vibrating parts and burn out of the voice coil . Therefore, multi-frequency speakers will use frequency dividers, so that signals of various frequency components and various frequency band units can play their due role.

The thin inner film capacitor added to the middle and high frequency unit is essentially a simple frequency divider. The thin film capacitor acts as a "high pass filter" that blocks low frequencies and allows only high frequencies to pass. 
The smaller the film capacitor capacity is, the higher the crossover point is, and the more obvious the effect of filtering low-frequency components.
This simple crossover is usually a two-way speaker, and its mid-low frequency unit feeds a full-band signal (but the mid-low frequency unit's response to high frequencies is also very low, so it will not play too much High-frequency sound capacity), the high-frequency unit feeds in a high-pass filtered high-frequency signal. Because part of the signal is filtered out, the speaker with the crossover will have a lower sound than the full-band signal, so the sound will be smaller after the audio film capacitor is added.

Now we introduce several fine film capacitors in the audio circle:

WIMA capacitor

ERO capacitor

Siemens capacitors

Philips capacitors

Rifa capacitor

Wonder capacitor

WEET capacitor

jb Capacitors

Relcap capacitor

Solen capacitor

MIT capacitor

WEE Technology Company Limited - WEE are Capacitors Specialist

A great audio sound system can be a wonderful thing - listening to dramatic bass drops and amazing highs can send a thrill even down the most jaded audiophile. The world of audio equipment isn't short on different things to maximize this experience either - with all sorts of speakers, tweeters, equalizers, crossovers, among many others. Regardless of what you have or want to be installed, your system won't do much unless it has the best car audio capacitor for you. These devices may be small but can improve sound quality by giving your rig the power it needs.

Audyn True Copper Cap 0.22uF 630V Copper Foil Capacitor, the sound complete different, very easy can tell so clear and get Rich mid sound too. Chinese Fuat a-cap 0.1uF 630V pure copper tube non-magnetic audio capacitor, WEET copper leadout, premium polypropylene film,  made in China, brand new quality, Super high cost performance. very smooth and clean sound, quality Compare to Jensen copper foil capacitor, the Fuat a-cap middle frequency is thicker.

WEE Technology Company Limited - WEE are Capacitors Specialist

In a certain range, theoretically, the larger the better, but when the performance of some components reaches the limit, if the capacitor size or capacitance is too large, it is a waste, that is to say, a waste of resources.

1: It is used in the power filter. The larger the theoretical DC voltage is more "clean", the signal output by the power amplifier is less interfered, and the sound quality is more high fidelity

2: And because the voltage on the capacitor can't be changed suddenly, when the power amplifier outputs high power at an instant (for example, there is a large subwoofer), the power supply voltage will not be pulled down at an instant, so there will be no "powerless" phenomenon, that is, the response speed.

3: But it's too big to consider whether the transformer and rectifier can withstand the large current at the moment of starting up. It's unrealistic to have a certain degree in everything, just like some people's houses are too big to waste

All in all, enough is good, just like some people's houses are just enough, just enough is OK, like their DIY amplifiers, a lot of what they care about is the sense of achievement, the sound quality is very difficult to have a standard, what they do, it may not be so in other people's eyes.

WEET largest WMJ Gold Copper Tube and Film Metallized Polypropylene Capacitors Axial, 22uF, 33uF, 47uF are diameter 45mm and length 65mm, welcome your enquiry and shop in our ebay online store.

WEE Technology Company Limited - WEE are Capacitors Specialist

Do you have interest in testing Audio Capacitors and Musicaps?
Are you looking for European quality products with Chinese price?
Is there any problem in purchasing small quantity samples for your crossover amplifier?

Don't worry, you find the right place here. WEET has recently set up a eBay shop to help you. 
If you have experience in writing testing views, please contact with us.
WEET is ready to offer free samples for you.

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