Electrolytic Capacitor[4]

Updated: 2026-09-15

Overview

The EKZH250ELL681MJ16S is a radial-lead aluminum electrolytic capacitor designed for demanding electronic applications. Manufactured with high-quality materials, it offers excellent performance in power supply circuits, automotive systems, and industrial machinery. Its compact design and robust construction make it suitable for space-constrained applications where reliability is critical. This capacitor is part of a series known for its extended operational lifespan and stability under high-temperature conditions, making it a preferred choice for engineers and manufacturers seeking durable components. Its specifications typically include a capacitance of 680µF, a voltage rating of 250V, and a tolerance of ±20%.

Structure and Working Principle

The EKZH250ELL681MJ16S consists of an aluminum anode foil, a cathode foil, and an electrolyte solution, all housed in an aluminum can. The anode is coated with an oxide layer that acts as the dielectric, enabling energy storage when a voltage is applied. The electrolyte facilitates ion movement, ensuring efficient charge and discharge cycles. This capacitor operates on the principle of electrostatic energy storage, providing quick charge/discharge capabilities essential for smoothing voltage fluctuations in DC circuits. Its low equivalent series resistance (ESR) enhances performance in high-frequency applications, reducing energy losses and heat generation.

Key Features

The EKZH250ELL681MJ16S is renowned for its high ripple current capacity, which allows it to handle significant current fluctuations without degradation. Its extended temperature range (typically -40°C to +105°C) ensures reliable performance in harsh environments, including automotive and industrial settings. Additional features include a long operational lifespan (often exceeding 2,000 hours at maximum rated temperature) and compliance with industry standards such as RoHS and REACH. These attributes make it a versatile component for applications requiring durability and stability under varying conditions.

Application Areas

This capacitor is widely used in power supply units (PSUs) for computers, servers, and telecommunications equipment, where it helps stabilize voltage and filter noise. In automotive electronics, it supports functions like engine control units (ECUs) and LED lighting systems, providing reliable performance under high vibration and temperature extremes. Industrial applications include motor drives, renewable energy systems, and automation equipment, where its high ripple current and temperature tolerance are critical. Its versatility and robustness make it a staple in both consumer and industrial electronics.

Maintenance and Precautions

To ensure optimal performance, avoid exposing the EKZH250ELL681MJ16S to voltages exceeding its rated capacity or reverse polarity, as this can cause failure or leakage. Storage in high-humidity environments should also be avoided to prevent degradation of the electrolyte. Regular inspection for bulging, leakage, or reduced capacitance is recommended, especially in high-stress applications. Proper soldering techniques and adherence to manufacturer guidelines for installation and operation can significantly extend the capacitor's lifespan.

B2B Procurement Guide

When procuring the EKZH250ELL681MJ16S, verify the supplier's authenticity to avoid counterfeit components. Bulk purchases often attract discounts, but ensure the components are stored properly before use. Lead times can vary, so plan orders in advance to avoid production delays. Key specifications to confirm include capacitance, voltage rating, temperature range, and ESR values. Reputable manufacturers typically provide detailed datasheets and compliance certifications, which should be reviewed to ensure compatibility with your application.