Description

Polypropylene Film Capacitors 1000nF / 400V (1µF)(105J)

The Polypropylene Film Capacitor 1000nF / 400V (1µF)(105J) is a high-performance passive electronic component designed for applications requiring excellent electrical stability, low loss, and long-term reliability. Manufactured using polypropylene (PP) dielectric film, this capacitor is widely used in signal coupling, filtering, timing, snubber circuits, and power electronics where precision and durability are critical.

With a capacitance value of 1000nF (1µF), a rated voltage of 400V DC, and a tolerance code of 105J (±5%), this capacitor provides dependable performance in both AC and DC circuits. Polypropylene film capacitors are especially valued for their low dielectric absorption, low dissipation factor, and stable capacitance over temperature and frequency variations.

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Polypropylene Dielectric for Superior Electrical Performance

This capacitor uses polypropylene film as its dielectric material, which is known for its outstanding electrical characteristics compared to polyester and other film types. Polypropylene capacitors exhibit extremely low dielectric losses, making them ideal for high-frequency and signal-sensitive applications.

Key advantages of polypropylene film include:

• Very low dissipation factor

• Low dielectric absorption

• Excellent insulation resistance

• High stability over temperature and frequency

These properties ensure accurate signal transmission and minimal energy loss, making the capacitor suitable for precision electronics.

Learn more about polypropylene vs polyester capacitors:
https://www.electronics-notes.com/articles/electronic_components/capacitors/polypropylene-capacitors.php

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Capacitance Value: 1000nF (1µF)

The 1000nF (1µF) capacitance value is commonly used in a wide range of electronic circuits, including:

• Signal coupling and decoupling

• Audio circuits

• Timing and oscillator circuits

• Power supply filtering

• Snubber and suppression networks

This value offers a balance between compact size and effective energy storage, making it versatile for both analog and digital designs.

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400V DC Rating for High-Voltage Applications

With a rated voltage of 400V DC, this polypropylene film capacitor is suitable for high-voltage circuits where safety margins and reliability are essential. The high voltage rating allows the capacitor to operate comfortably in demanding environments, reducing the risk of dielectric breakdown and extending operational lifespan.

High-voltage film capacitors are commonly used in:

• Power supplies

• Inverters and converters

• Industrial control circuits

• Motor drive systems

• Audio amplifiers

Understanding capacitor voltage ratings:
https://www.allaboutcircuits.com/textbook/direct-current/chpt-2/capacitors/

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Tolerance Code 105J (±5%)

The marking 105J indicates:

• 105 = 1,000,000 pF (1µF)

• J = ±5% tolerance

This tight tolerance ensures predictable and consistent performance, especially important in timing circuits, signal processing, and applications where component variation can affect system behavior.

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Stable Performance Over Temperature and Frequency

Polypropylene film capacitors are known for their excellent temperature stability, typically operating reliably across a wide temperature range without significant capacitance drift. This stability makes them suitable for environments where thermal variation is expected, such as industrial equipment and power electronics.

They also perform exceptionally well across a wide frequency spectrum, making them ideal for AC signal applications and high-frequency circuits.

More on capacitor temperature characteristics:
https://www.ti.com/lit/an/slyt677/slyt677.pdf

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Non-Polarized Design

This capacitor is non-polarized, allowing it to be connected in either direction within a circuit. This simplifies installation and makes it suitable for AC applications, unlike electrolytic capacitors which require correct polarity.

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Durable Construction and Long Service Life

The polypropylene film capacitor is constructed with high-quality materials and encapsulated for protection against moisture, dust, and mechanical stress. Its self-healing dielectric property helps prevent catastrophic failure by isolating minor internal faults, enhancing safety and longevity.

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Common Applications

The Polypropylene Film Capacitor 1000nF / 400V is widely used in:

• Audio amplifiers and signal processing circuits

• Power supplies and DC link circuits

• Snubber and EMI suppression circuits

• Timing and oscillator circuits

• Industrial control systems

• Renewable energy inverters

• Consumer electronics and appliances

Its reliability and electrical precision make it a preferred choice for both professional engineers and electronics hobbyists.

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Key Specifications Overview

• Capacitor type: Polypropylene film capacitor

• Capacitance: 1000nF (1µF)

• Rated voltage: 400V DC

• Tolerance: ±5% (J)

• Dielectric material: Polypropylene (PP)

• Polarity: Non-polarized

• Application: Signal, power, and high-voltage circuits

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Why Choose Polypropylene Film Capacitors?

Polypropylene film capacitors are trusted for applications that demand accuracy, stability, and long-term reliability. Compared to other capacitor types, they offer superior electrical performance, making them ideal for precision circuits and high-voltage environments. The 1000nF / 400V (105J) model delivers dependable performance across a wide range of applications.