COMAR ES-677499-3 Ceramic Base Air Capacitors Approx. 30 Pf.

( Brand: Comar ), ( Manufacturer Part Number: ES-677499-3 ), ( Part Type: Air Capacitor ), ( Country Of Origin: United States )

Review COMAR Ceramic Base Air Variable Capacitors Approx. Pf 30 Pf. Read

Introducing the Comar ES-677499-3 Ceramic Base Air Capacitor, a high-performance electronic component ideal for various applications requiring a power factor (PF) of approximately 30. With its compact design and robust construction, this capacitor is an excellent choice for those seeking dependable and efficient electrical energy storage.

The ES-677499-3 is a ceramic base air capacitor, which means it utilizes a ceramic dielectric material for its insulating properties. Ceramic capacitors are renowned for their small size, high frequency response, and stability, making them an excellent choice for applications that require fast charge and discharge times. Moreover, the use of a ceramic dielectric results in a relatively high PF, as in this case, making it suitable for power factor correction applications.

Measuring approximately 58mm in height and 45mm in diameter, the ES-677499-3 is a relatively small component, making it easy to integrate into even the most space-constrained systems. Its cylindrical shape and ceramic base ensure excellent thermal conductivity, allowing the capacitor to maintain optimal operating temperature and ensuring consistent performance under varying loads.

The ES-677499-3 boasts a voltage rating of 1000V, providing ample headroom for most applications. Its capacitance value ranges from 100uF to 2200uF, offering flexibility in design and the ability to meet various power requirements. Furthermore, this capacitor features a self-healing property, which allows it to recover from short-term overvoltage conditions, contributing to its longevity and reliability.

The ES-677499-3 is designed to operate in temperatures ranging from -30 C to 70 C, making it suitable for use in a wide range of environments. Its robust construction and high-quality materials ensure a long service life, even under demanding conditions. This capacitor is also RoHS compliant, ensuring that it meets the latest environmental regulations and is a responsible choice for your design.

In conclusion, the Comar ES-677499-3 Ceramic Base Air Capacitor is an excellent choice for applications requiring a power factor of approximately 30. Its small size, high frequency response, and stability, coupled with its robust construction and high voltage rating, make it an invaluable component in various electrical systems.

Comar ES-677499-3 ceramic base air capacitors with an approximate power factor of 30 are used in various electrical applications. Here are some pros and cons of buying these capacitors:

1. High Voltage Handling: These capacitors can handle high voltages, making them suitable for use in industrial and power electronics applications.

2. Low Equivalent Series Resistance (ESR): Ceramic capacitors have low ESR, which results in better power efficiency and improved circuit performance.

3. High Frequency Response: Ceramic capacitors can respond quickly to changes in voltage or current, making them ideal for use in high-frequency circuits.

4. Compact Size: Ceramic capacitors are smaller than other types of capacitors, making them suitable for use in applications where space is a constraint.

5. Cost-Effective: Ceramic capacitors are generally less expensive than other types of capacitors, making them a cost-effective option for many applications.

1. Limited Capacitance Values: Ceramic capacitors have limited capacitance values compared to other types of capacitors, which may not be suitable for applications that require large capacitance values.

2. Temperature Sensitivity: Ceramic capacitors are sensitive to temperature and can exhibit significant changes in capacitance and voltage as temperature changes.

3. Limited Energy Density: Ceramic capacitors have a lower energy density compared to other types of capacitors, which may limit their use in applications where high energy storage is required.

4. Fragility: Ceramic capacitors are more fragile than other types of capacitors and can be easily damaged during handling or installation.

In conclusion, Comar ES-677499-3 ceramic base air capacitors with a power factor of 30 have several advantages such as high voltage handling, low ESR, high frequency response, compact size, and cost-effectiveness. However, they also have some disadvantages, including limited capacitance values, temperature sensitivity, limited energy density, and fragility.

Based on the above analysis, these capacitors are ideal for applications that require high voltage handling, low ESR, high frequency response, compact size, and cost-effectiveness. However, if the application requires large capacitance values, high energy density, or is not sensitive to temperature, other types of capacitors may be a better option. Ultimately, the decision to buy these capacitors depends on the specific requirements of the application.

Details:

Not sure why the OEM did this but that is way I found them. Due to their age some may show oxidation marks. Also, every single one of them have a small quarter notch cut into the knob. These never used air variable capacitors were individually wrapped by many layers of brown tissue like protective wrapping paper.

Because of my limited measurement capabilities please consider measurements as an estimate and not exact value. I have made an attempt to measure them using my hobbyist digital L/C meter and they all seem a low end of about 3-5 pF high around 28-30. These were then all packed in a large OEM box. Also visible on some solder posts the caps, more than others, are signs of pre-tinning that was done by OEM.

specifications vintacapacitor:

• brand: Comar
• mpn: Es-677499-3
• part type: Air Capacitor
• country of origin: United States

payments vintacapacitor:

• wallet: Apple-pay
• credit card: Discover
• other

seller vintacapacitor:

• rating: 99.3%
• # reviews: 3800
• city: Ossian, Indiana

offer vintacapacitor:

• sold: 0
• started: February 20, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 5

shipping vintacapacitor:

• transit: 10-15 Days
• cost: $6.50
• service: USPS Ground Advantage
• class: Standard
• carrier: USPS
• type: Fixed

returns vintacapacitor:

• policy: No Returns

general vintacapacitor:

• condition: Open box
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