50ST105M4532

Operating Temperature:	-55°C ~ 125°C
Features:	--
Ratings:	--
Applications:	DC Link, DC Filtering
Lead Spacing:	--
Termination:	--
Height - Seated (Max):	0.063" (1.60mm)
Size / Dimension:	0.177" L x 0.126" W (4.50mm x 3.20mm)
Package / Case:	1812 (4532 Metric)
Mounting Type:	Surface Mount
Series:	PMLCAP®, ST
Dielectric Material:	Acrylic, Metallized
Voltage Rating - DC:	50V
Voltage Rating - AC:	--
Tolerance:	±20%
Capacitance:	1µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Film Capacitors

Film capacitors are a type of capacitor which is constructed of stacks of dielectric film. These stacks of film are wound around an insulating core to produce a capacitor that is well-suited for use in high frequency, high power, and high voltage applications. The type of film capacitors used in such applications is designated by a model number, such as the 50ST105M4532.

50ST105M4532 Application Field

The 50ST105M4532 is a type of metallized polyester film capacitor which is designed for use in motor control units, as well as various other applications which require a combination of capable performance at high frequencies, high power, and high voltage. Depending on the exact specifications, such capacitors can be used in applications which require up to 85°C of temperature rating.

50ST105M4532 Working Principle

The 50ST105M4532 is a type of metallized polyester film capacitor which includes two metalized films of Mylar - or polyester - and a polypropylene film which acts as the electrical insulating core. These three components are electrically connected, and are wound around the core in multiple layers. To ensure electrical contact between the components, the edges of the metalized films are electrically connected at both ends of each winding. The inner metalized film forms the actual capacitor - forming a resistive dielectric for the capacitor - while the outer layers act as the shielding. Circuit connections are typically made with two wires, allowing for a series or parallel connection of the components in the event of higher power requirements.

Pros and Limitations

The greatest advantage of film capacitors is their ability to offer a high dielectric constant as compared to ceramic and electrolytic capacitors, which means they can handle a higher current and voltage without sacrificing performance. Additionally, film capacitors are highly stable in their capacitance and may also offer a longer operational life. On the other hand, film capacitors are not without their drawbacks. In addition to being more expensive than many other types of capacitors, film capacitors also tend to have a lower transient voltage response than some other types. In addition, while dielectric film capacitors may offer a high power rating, they cannot withstand the same amount of power as some other types of capacitors. For that reason, they should never be used in a power supply.

Conclusion

The 50ST105M4532 is a type of metallized polyester film capacitor which is designed for use in applications which require a combination of capable performance at high frequencies, high power, and high voltage. These capacitors are extremely stable and are well-suited for use in a variety of situations, though they cannot handle the same amount of power as some other types of capacitors. Therefore, it is important to consult the specifications of each capacitor before making a purchase.

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