PLASTIC CAPACITORS LK40-256Y Power Capacitor LK40-805

( Brand: Plastic Capacitors ), ( Manufacturer Part Number: LK40-256Y ), ( Unit Type: Unit )

Review PLASTIC CAPACITORS Model Hi Power Capacitor

The LK40-256Y and LK40-805 are high-performance aluminum electrolytic capacitors designed for use in power applications. These capacitors, manufactured by Cornell Dubilier Electronics, are available in two different capacitance values.

The LK40-256Y capacitor offers a capacitance value of 256 microfarads at a voltage rating of 400 volts. It is designed with a robust aluminum electrolytic construction, ensuring reliability and durability in demanding power applications. This capacitor features a low Equivalent Series Resistance (ESR) value, which minimizes power loss and improves efficiency. Its low leakage current further ensures stable voltage levels over extended periods.

The LK40-805 capacitor, on the other hand, offers a capacitance value of 805 microfarads at the same voltage rating of 400 volts. It shares the same robust aluminum electrolytic construction, ensuring reliability and durability in power applications. This capacitor also boasts a low ESR value for minimized power loss and improved efficiency. Its low leakage current is comparable to that of the LK40-256Y, ensuring stable voltage levels over extended periods.

Both capacitors offer a high ripple current capability, making them ideal for use in power supplies and other applications requiring large energy storage or demanding current surges. They are RoHS compliant and feature a long service life, ensuring consistent performance over extended periods. The LK40-256Y and LK40-805 capacitors are suitable for use in various industries, including telecommunications, industrial automation, renewable energy, and medical equipment.

Capacitors LK40-256Y and LK40-805 are power capacitors used in various electrical applications. Both capacitors have their unique features, advantages, and disadvantages.

1. High Capacitance: This capacitor offers a higher capacitance value of 256 microfarads, which is suitable for applications requiring large energy storage or filtering.

2. Low ESR (Equivalent Series Resistance): A low ESR value ensures minimal power loss and improved efficiency. This capacitor's low ESR makes it an ideal choice for applications where minimal power loss is essential.

1. Large Size: Due to its high capacitance value, this capacitor has a larger physical size, which could be a disadvantage in applications where space is limited.

2. Higher Cost: The larger size and higher capacitance value contribute to a higher cost compared to smaller capacitors with lower capacitance values.

1. Medium Capacitance: With a capacitance value of 805 microfarads, this capacitor offers a good balance between capacitance and size, making it suitable for various applications.

2. Cost-Effective: The medium capacitance value and smaller size make this capacitor a cost-effective option compared to the LK40-256Y.

1. Higher ESR: Compared to the LK40-256Y, this capacitor has a higher ESR value, leading to increased power loss and reduced efficiency.

Both LK40-256Y and LK40-805 capacitors have their unique advantages and disadvantages. The choice between the two ultimately depends on the specific application requirements. For applications that require high energy storage or filtering and have sufficient space and budget, the LK40-256Y capacitor would be the better choice. However, for more general applications where cost and size are critical factors, the LK40-805 capacitor would be a more suitable option.

Based on the given information, I would recommend the LK40-805 capacitor for most general applications where cost, size, and medium capacitance value are essential factors. However, if the application demands high energy storage or filtering capabilities and space and budget are not constraints, the LK40-256Y capacitor would be the better choice.

Details:

Please look at all pictures closely before purchasing. Not saying it won't need adjustments but, looks like a nice clean unit. Items may need a more in depth cleaning. I did purchase from a local operator.

Everything you see in the pictures is what included this lot. Photos are the best. I do a lot of business with them and they always have well cared for gear. I am not an operator and don't have the knowledge to fully test myself.

part #: lk40256y prices

• $59.99-$489.00

specifications capacitorelectron:

• brand: Plastic Capacitors
• mpn: Lk40-256y
• unit type: Unit

general capacitorelectron:

• Electrical Equipment Supplies > Electronic Components Semiconductors > Capacitors
• condition: Used

offer capacitorelectron:

• started: March 20, 2026
• best offers: True
• quantity: 1
• sold: 0
• availability: In Stock
• options: Ship-to-home

seller capacitorelectron:

• # reviews: 14179
• city: Federal Way, Washington
• rating: 99.3%

shipping capacitorelectron:

• carrier: USPS
• type: Fixed
• class: Standard
• service: USPS Ground Advantage
• transit: 10-13 Days
• cost: $24.99

returns capacitorelectron:

• policy: No Returns

payments capacitorelectron:

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

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