Metalized Polypropylene Capacitors

Product Introduce

Metalized polypropylene capacitors has a series structure, metalized polypropylene film, low loss, outstanding electrical performance, high reliability, and self-healing capabilities, and can withstand high voltage and high current shock.

As conducting electrodes, tiny layers of aluminum (about 0.03 m) are vacuum-deposited on the insulating film in the case of metallized capacitors. When there is a breakdown, the thin metal coating around the failure spot evaporates due to the short circuit current, creating an insulating region.

Set the multimeter to read in the high ohms region, between 10k and 1m ohms, to test the capacitor. Connect the meter leads—red to positive and black to negative—to the capacitor’s corresponding leads. The meter should begin at zero and gradually increase to infinity.

Of this paper, the authors quantify the losses in metalized polypropylene film capacitors using an analytical approach. The concept is put to the test using capacitors with varied geometries but the same capacitance. In order to maximize its thermal performance, a temperature distribution in the roll is assumed for each series of capacitors. According to appearances, a long capacitor heats up more quickly than an identical flat capacitor that is subjected to the same electric stressors.

It is black, and the capacitance is 2.0uF. The dimension is 38*28*18mm. Metalized Capacitors are available with different values of general and value ratings. They are used for DC pulsation, pulse, and AC voltage reduction in instruments, meters, TV sets and household electrical appliances. We are looking for bulk enquiries for Metallized Polypropylene Capacitor, MAC Series A.C Usage capacitors etc.

Metalized polypropylene capacitors have no polarity, high insulation resistance, excellent frequency characteristics (broad frequency response), and low dielectric loss. Based on the above advantages, film capacitors are widely used in analog circuits. Especially in the part where the signals are cross-connected, capacitors with good frequency characteristics and extremely low dielectric loss must be used to ensure that the signal will not be distorted when it is transmitted. High dielectric constant, small size, large capacity, good stability, suitable for bypass capacitors. Polystyrene film capacitors have low dielectric loss and high insulation resistance, but have a large temperature coefficient and can be used in high-frequency circuits.

Metalized polypropylene capacitors Features

1. Very low loss.

2. The medium absorption coefficient is low.

3. High insulation resistance.

4. Good frequency characteristics.

5. Good self-healing properties.

6. Good stability.

7.Metalized polypropylene capacitors have a wide capacity range, ranging from thousands of picofarads to tens of microfarads.

8.Good temperature resistance and high insulation resistance.

9.Metallized polypropylene film capacitors have good self-healing ability.

10.The loss tangent value is small, and the high-frequency characteristics are good.

11.Small size, reliable operation.

12.Non-inductive construction
13.Self-healing property
14.High current endurability up to 20A and special termination for high current

The role of metalized polypropylene capacitors: high frequency pulse applications, high current occasions, AC occasions, high stability timing occasions, switching power supply systems, lighting industry, industrial control industry and other fields.

Application of metalized polypropylene capacitors:

1.Applicable for air conditioners, ventilator, electric fan, AC one-phase motors, fluorescent lamps,

mercury lamps and transformer etc.
2. Used for starting, running and power factor correcting purpose.

Specifications of metalized polypropylene capacitors:

Dielectric: Metallized polypropylene film

Electrodes: Vacuum evaporated metal

Coating: Encapsulated in engineering plastic sealed case with epoxy resin meeting the requirement.

Leads: Radial leads of tinned wire / insulation flexible wire or tabs

Reference standard: GB/T 3667-1997 UL810 IEC 60252-1

Climatic catalogue: 25/70/21

Capacitance versus rated voltage:

1.0μF~50μF 0~500VAC （UL）

1.0uF~13.0uF 250VAC (CQC VDE)、

1.0uF~6.0uF 400VAC (CQC)

1.0uF~6.0uF 500VAC (CQC VDE)

Capacitance tolerance: M ±20% K ± 10% J ± 5%

Dissipation factor (tangent of loss): ≤％ ℃ 0.2 (at 20 , 1KHz)

Voltage-proof:

T-T 2.0*UR(10S) Unit:VDC

T-C 2*UR+1000V(60S) Unit:VDC

Insulation resistance:

T-T C＜ 0.47 μF  ≥ 2000MΩ

C≥ 0.47 μF  ≥ 1000S

T-C ≥ 2000MΩ (1 minute at 20 and RH 65%)

ENDURANCE AFTER TESTING:

600hours with 125% of rated voltage at 70 ℃。

70℃， 125%。

ΔC/C≤ 5%； IR ≥ 50% of the specified value

Metalized polypropylene capacitors, often referred to as metallized polypropylene capacitors, are a type of capacitor used in electronic circuits. These capacitors are known for their excellent electrical properties and are commonly used in applications that require high precision and reliability. Here are some key characteristics and information about metalized polypropylene capacitors:

1. Dielectric Material: These capacitors use polypropylene as their dielectric material. Polypropylene is a type of plastic that has low dielectric losses and is known for its stability over a wide range of temperatures and frequencies.
2. Metallized Film: The polypropylene film is metallized by depositing a thin layer of metal, typically aluminum, on one or both sides of the film. This metallization process increases the capacitance and improves the capacitor’s performance.
3. High Capacitance Values: Metalized polypropylene capacitors are available in a wide range of capacitance values, from picofarads (pF) to microfarads (µF). They can store a significant amount of electrical energy for their size.
4. Low ESR and ESL: These capacitors typically have low Equivalent Series Resistance (ESR) and Equivalent Series Inductance (ESL), making them suitable for applications where low impedance and high-frequency performance are required.
5. Low Losses: Metalized polypropylene capacitors have low dielectric losses, which means they can store and release energy efficiently without generating excessive heat.
6. High Voltage Ratings: They are available in various voltage ratings to suit different applications, including high-voltage applications.
7. Stable Performance: These capacitors offer stable and predictable performance over time, with minimal drift in capacitance or other electrical characteristics.
8. Non-Polarized: Most metalized polypropylene capacitors are non-polarized, which means they can be connected to a circuit without regard to the polarity.
9. Applications: These capacitors are commonly used in audio equipment, power electronics, filter circuits, and other applications where precision, low losses, and stability are crucial. They are also suitable for crossover networks in loudspeakers and in radio frequency (RF) circuits.
10. Size and Form Factors: Metalized polypropylene capacitors are available in various package sizes, including radial and axial leaded capacitors, surface-mount capacitors, and even large can-style capacitors for high-power applications.

It’s important to select the right type and value of capacitor for your specific application to ensure optimal performance. Metalized polypropylene capacitors are often chosen for their reliability and low distortion in audio applications, as well as their ability to handle high-frequency signals in electronic circuits.