185105K63RGA-F

Operating Temperature:	-55°C ~ 125°C
Features:	--
Ratings:	--
Applications:	General Purpose
Lead Spacing:	0.197" (5.00mm)
Termination:	PC Pins
Height - Seated (Max):	0.433" (11.00mm)
Size / Dimension:	0.283" L x 0.236" W (7.20mm x 6.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	185
Dielectric Material:	Polyester, Metallized
Voltage Rating - DC:	63V
Voltage Rating - AC:	40V
Tolerance:	±10%
Capacitance:	1µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to Film Capacitors
Film capacitors, also known as film dielectric capacitors, plastic film capacitors, or film capacitors, are capacitors whose anode and/or cathode electrode are made of a polymer film. Generally, the polymer film is treated with an acidic solution, which can improve the actual insulation resistance of the film. The most commonly used film capacitor is the electrolytic capacitor, which uses aluminum or tantalum foil as the anode electrode and a special oxide film as the cathode electrode. Typical electrolytic capacitors can range from microfarads to thousands of microfarads. Due to its high stability and low leakage current, it is the preferred type of storage capacitance for high-frequency power electronics and filtering applications.

185105K63RGA-F Application Field and Working Principle
The 185105K63RGA-F is a bipolar film capacitor with an operating temperature range of -55°C to 105°C, a maximum DC voltage of 63V, a capacitance of 15,000pF, and a ±5% tolerance. It is suitable for low-frequency and high-frequency applications and is used in a variety of filtering, bypass, coupling, and blocking circuits. The working principle of this film capacitor is the same as that of a regular electrolytic capacitor. However, it has a higher insulation resistance than a regular electrolytic capacitor. The insulation resistance is determined by the dielectric surface treatment and the porosity of the anode and cathode electrodes that make up the capacitor. In its capacitor, the anode and cathode electrodes are formed on two sides of a polymer film, and when a DC voltage is applied to the electrons move through the dielectric and exchange charges. This movement of electrons creates an electric field that allows for a capacitance build up.

Advantages
Compared to other types of capacitors, such as electrolytic and ceramic, film capacitors have the following advantages:

• High reliability: Film capacitors do not suffer from electrolyte leakage, electrolyte evaporation, or catastrophic failure as often as electrolytic capacitors, making them more reliable.
• Long service life: Film capacitors are usually able to handle a higher voltage and operate for a longer period of time than electrolytic or ceramic capacitors.
• Excellent temperature characteristics: Film capacitors have a wide operating temperature range.
• Low distortion performance: Film capacitors can reduce distortion due to their higher dielectric constant.
• Low distortion performance: Film capacitors can reduce distortion due to their higher dielectric constant.
• Low ESR and ESL: Film capacitors have low Equivalent Series Resistance (ESR) and Equivalent Series Inductance (ESL), making them more suitable for use in high frequency circuits.
• Low cost: The raw materials used to manufacture film capacitors are generally much cheaper than the materials used for electrolytic and ceramic capacitors.

Disadvantages
The main disadvantages of film capacitors are listed below:

• Size: Film capacitors are generally larger than other types of capacitors due to the need for the anode and cathode electrodes.
• Climatic dependence: Film capacitors are very sensitive to environmental conditions, so their performance may vary depending on the environment.
• Cannot be used in places with high mechanical stress: Film capacitors are not suitable for use in places with high mechanical stress due to their fragile and easily damaged electrodes.
• Low capacitance: Due to their large size, film capacitors generally have a lower capacitance than other types of capacitors.

Conclusion
Film capacitors have high reliability and are more suitable for use in high frequency circuits compared to other types of capacitors. The 185105K63RGA-F is a bipolar film capacitor that is suitable for low-frequency and high-frequency applications. Its maximum DC voltage is 63V, its capacitance is 15,000pF, and its tolerance is ±5%. Although it has some disadvantages, such as its size, environmental sensitivity, and low capacitance, it is still a generally good choice for applications that require high reliability and high frequency.

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