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Tantalum Capacitors
Tantalum Capacitors: Compact, Reliable & High-Performance
In modern electronics, components are required to deliver high performance in compact formats and operate reliably under demanding conditions.
Tantalum capacitors meet these requirements and are a key component in many professional applications.
At alfatec GmbH & Co. KG, you’ll find a selection of high-quality tantalum capacitors tailored to your needs.
What Makes a Tantalum Capacitor Special?
A tantalum capacitor is an electrolytic capacitor distinguished by its anode material - tantalum. The core consists of sintered tantalum powder, whose porous structure provides an extremely large surface area in a small volume.
A very thin but highly insulating layer of tantalum pentoxide (Ta₂O₅) is electrochemically formed on this surface, serving as the dielectric.
A solid or liquid electrolyte acts as the cathode, contacting the large dielectric surface. This construction results in exceptionally high volumetric capacitance - high capacitance in a small package.
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Technical Parameters of Sunlord Tantalum Capacitors
The tantalum capacitors offered by alfatec, such as those from Sunlord, cover a wide range of technical requirements:
- Capacitance range: Typically from 1.0 µF to 1500 µF—suitable for applications from signal smoothing to energy storage.
- Rated voltage (UR): Available from 2.0 V to 100 V DC. Correct voltage selection is critical for safe operation and longevity. Voltage derating is recommended depending on the application.
- Operating temperature range: Standard from −55 °C to +105 °C (up to +125 °C with derating), suitable for harsh environments.
- Package sizes: Available in standard EIA sizes (e.g., 0805, 1206, 1210, 2312, 2917), compatible with automated assembly.
- ESR (Equivalent Series Resistance): Tantalum capacitors feature relatively low ESR, making them ideal for filtering and decoupling.
- Core materials (Pellet): High-purity tantalum powder for the anode and precisely formed tantalum pentoxide as the dielectric. The cathode material—manganese dioxide or polymer—affects ESR and leakage current.
Types of Tantalum Capacitors
Tantalum capacitors are available in various designs to meet different application requirements:
- Solid Tantalum Capacitors (SMD/Chip): The most common form, ideal for surface mounting (SMD). Typically use solid manganese dioxide or conductive polymers as the cathode. Advantages include high reliability, long life, good frequency response, and wide temperature range.
- Wet Tantalum Capacitors: Use a liquid electrolyte and often achieve even higher CV (capacitance-voltage) values. Common in high-reliability applications such as military and aerospace.
- Other Types: Hermetically sealed versions or those with special terminals.
At alfatec, we focus on providing high-quality chip solid SMD-type tantalum capacitors, especially from leading manufacturers like Sunlord. This form factor is the preferred choice for most modern industrial and commercial applications.
Our partner for tantalum capacitors
Sunlord
Our partner Sunlord has been developing and producing chip-based electronic components such as EMC or RF components, coils, inductors and transformers since 2000. The company also offers development work for customised designs and has already received Tier 1 certifications for this.
Your Partner for High-Quality Tantalum Capacitors: alfatec
At alfatec, we understand the needs of engineers, technicians, and buyers. We offer not only high-quality components like tantalum capacitors from leading manufacturers such as Sunlord, but also the technical support you need for your projects.
- Expert consultation: Our team helps you select the right capacitor.
- Reliable delivery: We ensure timely availability of required components.
- Quality focus: We rely on established manufacturers and verified quality.
Request your personalized quote now
See for yourself the quality and performance of our tantalum capacitors. Request a non-binding quote today or download the data sheets.
alfatec – your partner for high-quality electronic components
As your expert partner for electronic components, alfatec supports you in selecting the right tantalum capacitors for your applications. We offer comprehensive advice and are happy to answer any questions you may have about power modules.
Do you have questions about our tantalum capacitor solutions or would you like a personal consultation? Feel free to contact us.