CDE (now part of Vishay Intertechnology) has established a strong reputation in the capacitor industry, offering a wide range of products for diverse applications. This article focuses on their hermetically sealed aluminum electrolytic capacitors, specifically highlighting the new MLSH series, and exploring the advantages of this technology for demanding environments. We will delve into the construction, ratings, and benefits of hermetic sealing and prismatic form factors, comparing them to other capacitor types and outlining their suitability for various applications.
CDE Capacitor Product Overview:
CDE's capacitor portfolio encompasses a broad spectrum of technologies, serving applications ranging from consumer electronics to demanding industrial and military systems. Their product line includes:
* Aluminum Electrolytic Capacitors: This is a large category encompassing various types, including general-purpose, high-frequency, high-temperature, and, importantly, hermetically sealed versions. These capacitors are known for their high capacitance values in a relatively small package size, making them ideal for power supply filtering and energy storage applications. Different electrolytes (e.g., aluminum, tantalum) offer varying performance characteristics.
* Film Capacitors: CDE also manufactures a range of film capacitors, which utilize dielectric films like polypropylene, polyester, or metallized film. These capacitors offer excellent stability, low ESR (Equivalent Series Resistance), and high frequency performance, making them suitable for high-frequency filtering, coupling, and timing circuits.
* Ceramic Capacitors: These capacitors are characterized by their small size and high capacitance density. CDE offers a variety of ceramic capacitor types with different dielectric materials, catering to different capacitance and voltage requirements. They find applications in decoupling, bypassing, and resonant circuits.
* Hybrid Capacitors: Combining the strengths of different capacitor technologies, hybrid capacitors offer optimized performance for specific applications.
Main Focus: Hermetically Sealed Aluminum Electrolytic Capacitors
While CDE offers a diverse range of capacitors, this article focuses on their hermetically sealed aluminum electrolytic capacitors, specifically the MLSH series. Hermetic sealing distinguishes these capacitors from their non-hermetic counterparts, offering superior performance and reliability in harsh environments.
Hermetically Sealed Aluminum Electrolytic Capacitors: The MLSH Series
The MLSH series represents a significant advancement in hermetically sealed aluminum electrolytic capacitor technology. These capacitors are designed to withstand extreme conditions, offering exceptional longevity and stability compared to standard aluminum electrolytic capacitors. Their hermetic sealing prevents the ingress of moisture, contaminants, and corrosive gases, significantly extending their lifespan and ensuring reliable operation even under challenging circumstances.
Construction and Ratings:
The MLSH series capacitors utilize a robust construction designed for hermeticity. Key features include:
* Weld-Sealed Case: The capacitor case is typically made of a corrosion-resistant metal, such as stainless steel, and is hermetically sealed using a precise welding process. This creates a completely sealed environment, protecting the internal components from environmental factors.
* High-Purity Electrolyte: A high-purity electrolyte is used to minimize internal degradation and ensure long-term stability. The electrolyte's composition is carefully chosen to optimize performance and longevity under various operating conditions.
* Robust Terminals: The terminals are designed for secure connection and are often welded to the case for added reliability. This ensures a low-resistance connection and prevents any potential for corrosion or loosening over time.
* Prismatic Form Factor: The prismatic form factor offers a compact and efficient design, allowing for easy integration into various applications. The rectangular shape optimizes space utilization compared to cylindrical designs.
The ratings of the MLSH series capacitors vary depending on the specific model. Typical ratings include:
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