VISHAY 597D Replacement: Comprehensive Analysis of CA97 Ultra-Low ESR Tantalum Capacitors

2025-01-25

Solid tantalum capacitors are widely used in electronic applications due to their high capacitance density, stable capacitance, and reliability. In high-reliability applications such as aerospace, military, and medical devices, they have strict requirements for ESR values. These low ESR capacitors reduce heat generation, enhancing overall circuit efficiency and contributing to long-term reliability.

We will introduce you in details of Ultra-Low ESR Solid Tantalum Chip Capacitors from the definition, features and applications.

What is Ultra-Low ESR Solid Tantalum Chip Capacitors?

Ultra low ESR is short for Equivalent Series Resistance. Ultra low ESR chip tantalum capacitors are a type of capacitor that features an extremely low internal resistance, which is crucial for high-frequency, high reliability applications.

CA97 Series, Solid Tantalum Chip Capacitors, Conformal Coated, Ultra-Low ESR, Maximum CV

Featured with:

▶Operative Standard:GJB5437-2005 and ZZR(Z)-Q/MM20145A-2007

▶Extremely low ESR, surface mount

▶Ripple current up to 3.7A

▶100% surge current tested

▶Moisture sensitivity level 2a

▶RoHS-compliant and non RoHS-compliant both available

▶ Operating Temperature: -55 °C to +125 °C

▶ Capacitance up to 2200 µF, Rating voltage up to 75VDC

A wide range of sizes available, size E, R, F, Z, H,N...

The applications of Ultra-Low ESR Solid Tantalum Chip Capacitors:

The high performance, high frequency environments requires the high quality tantalum capacitors. The Ultra low ESR chip tantalum capacitors are widely used in electronics field. Below are the main applications and crucial reasons that each application requires ultra-low ESR solid tantalum chip capacitors :

High-Frequency RF Applications:

Essential in RF and microwave circuits for filtering and decoupling, where low ESR helps maintain signal integrity and reduces losses.

In high RF power applications, the power dissipation of a capacitor is directly related to its ESR. Low ESR capacitors reduce the amount of heat generated, making thermal management more manageable. Low ESR minimizes the voltage drop and ripple during operation, ensuring that the signal remains stable and maintains its integrity. This is particularly important in RF and microwave circuits, where even minor fluctuations can significantly impact performance. Tantalum capacitors exhibit stable capacitance over a wide temperature range, which is essential in RF applications that may experience temperature fluctuations. Low ESR further contributes to maintaining performance under varying thermal conditions.

Automotive Electronics:

Used in engine control units (ECUs), infotainment systems, and advanced driver assistance systems (ADAS) to ensure reliable operation in harsh environments and improve efficiency.

In automotive electronics, efficient power management is crucial. Ultra-low ESR capacitors minimize energy losses during operation, leading to improved overall system efficiency. This is particularly important for battery-powered systems and electric vehicles, where energy conservation is key. Automotive systems often experience rapid changes in load and voltage. Ultra-low ESR capacitors provide excellent transient response, helping to stabilize voltage levels and ensuring reliable operation of critical components, such as engine control units (ECUs) and infotainment systems. The automotive industry often faces space constraints due to the compact design of modern vehicles. Ultra-low ESR solid tantalum chip capacitors offer high capacitance values in small packages, making them suitable for tight spaces without compromising performance.

Telecommunications: Telecommunications systems often operate at high frequencies. Ultra-low ESR capacitors reduce losses associated with parasitic elements, enabling efficient operation in RF and microwave applications, which is vital for communication signals.Telecommunication devices experience rapid changes in load due to varying data traffic. Low ESR capacitors provide excellent transient response, stabilizing voltage levels and preventing disruptions that could affect performance.The demand for smaller, more efficient devices in telecommunications drives the need for compact components. Ultra-low ESR solid tantalum chip capacitors offer high capacitance values in small sizes, making them suitable for densely packed circuit boards.

Aerospace and Defense:

Applied in avionics, missile systems, and satellite technology, where reliability and performance under extreme conditions are essential.

Aerospace and defense systems often operate in extreme conditions, including temperature variations, high altitudes, and exposure to radiation. Ultra-low ESR tantalum capacitors are designed to perform reliably under these challenging conditions, ensuring the integrity of critical systems. Aerospace and defense systems often experience rapid load changes. Low ESR capacitors provide superior transient response, quickly stabilizing voltage levels and maintaining performance during sudden changes, such as those encountered in avionics or missile guidance systems. Space and weight are critical considerations in aerospace and defense design. Ultra-low ESR solid tantalum chip capacitors offer high capacitance values in compact packages, allowing for efficient use of space on circuit boards without compromising performance.Their robust construction and reliability make ultra-low ESR solid tantalum capacitors suitable for critical applications where failure is not an option, such as in aerospace and defense systems.

Ultra low ESR chip tantalum capacitors are valued for their ability to provide high capacitance energy storage, low power dissipation, and stable performance in a variety of demanding electronic applications, their superior characteristics make them popular in high frequency, automotive electronics, telecommunications, Aerospace and Defense, etc applications.

What’s the features of Ultra-Low ESR Solid Tantalum Chip Capacitors CA97 series?

HONGDA Capacitors, the ISO9001 qualified factory, focus on the capacitors, inductors production. We can provide you below standard tantalum capacitors:

CA42 Radial Dipped Tantalum Capacitors

CA45 Chip Tantalum Capacitors (Standard)

CA45L Low ESR Chip Tantalum Capacitors

CA55 Polymer Chip Tantalum Capacitors

Cross: AVX KEMET Vishay brand, while we have much stable supply, for the running series, we support 2weeks LT normally.

HONGDA Capacitors, developed the Ultra-Low ESR Solid Tantalum Chip Capacitors: CA97 series https://www.hongdacapacitors.com/products/CA97-Ultra-Low-ESR-Chip-Tantalum-Capacitors.html

below cross PN for your reference.

For more alternative parts of T97Z476K050ESB, T97Z476M050ESB or other mil capacitors, like hybrid wet tantalum capacitors, pls contact Sandy:

Email: sandy@hongdacap.com.hk

Mobile: +86 134 1426 6962((Wechat/Whatsapp)

We have engineers, working with us, to do accurate cross for you.