The CM21CH471J50AT is a ceramic capacitor manufactured by AVX Corp/Kyocera Corp. Ceramic capacitors are widely used in electronic circuits for various purposes, including decoupling, filtering, and energy storage. This particular capacitor belongs to the CM series, which are known for their compact size and reliable performance.

Applications

• Decoupling capacitors in digital circuits: Providing a local energy source to integrated circuits, reducing noise and voltage fluctuations.
• Filtering capacitors in power supplies: Smoothing out voltage ripple and providing a stable DC voltage.
• Timing circuits: Used in conjunction with resistors to create timing delays.
• Audio circuits: Filtering unwanted frequencies and coupling audio signals.
• High-frequency circuits: Due to their low ESR (Equivalent Series Resistance) and ESL (Equivalent Series Inductance), they are well-suited for high-frequency applications.

Features

• Capacitance: 470pF (picofarads). This value determines the amount of charge the capacitor can store.
• Voltage Rating: 50V. This is the maximum voltage that can be safely applied across the capacitor.
• Temperature Coefficient: CH. This indicates the capacitance change over temperature. CH capacitors typically exhibit a relatively stable capacitance with temperature variations.
• Tolerance: J (±5%). This specifies the acceptable variation in the actual capacitance value compared to the nominal value.
• Dielectric Material: Ceramic. Ceramic capacitors offer good stability and low losses.
• Package: Typically a small surface-mount package (e.g., 0805, 0603) for automated assembly. The exact dimensions can be confirmed with the datasheet.

Benefits

• Reliable Performance: Ceramic capacitors are known for their long lifespan and stable performance.
• Compact Size: Ideal for space-constrained applications.
• Low ESR and ESL: Suitable for high-frequency applications.
• Wide Range of Applications: Can be used in various electronic circuits.
• Cost-Effective: Generally, ceramic capacitors are relatively inexpensive.

Additional Details

The CM21 series from AVX/Kyocera is a general-purpose ceramic capacitor series. The '21' likely refers to a specific case size within the CM series. Detailed specifications such as dimensions, operating temperature range, and insulation resistance can be found in the official datasheet from AVX/Kyocera. These capacitors are RoHS compliant, indicating that they meet environmental standards by restricting the use of hazardous substances.