22uF 16V Tantalum Capacitor

2024-09-07

22uF 16V SMD Tantalum Capacitor Description

A 22uF 16V SMD Tantalum Capacitor is common type of Tantalum capacitor, which is  widely used in various electronic circuits, particularly in applications where small size, reliability, and stable capacitance are required.

Specifications & Features of 22uF 16V Tantalum Capacitor

High Quality 22uF 16V Tantalum Capacitor

Excellent Temperature and Long-Life Stability

Moisture Resistant

Very Low Leakage Current

Accuracy: ±10%

Operating Temperature Range: -55°C to +85°C

RoHS Compliant

HD CA45 series 22uF 16 SMD Tantalum cap have below Specifications

Case size: A,B,C, D,E

Operating Temperature Range: -55℃; ~ +125 ℃;  >85 ℃ (with rated voltage derating)

Voltage Range: 2.5V, 4V, 6.3V, 10V, 16V, 20V, 25V, 35V, 50V

Capacitance Tolerance: K: +/-10%; M: +/-20%

SPQ: A,B case: 2000pcs/reel; C,D case: 500pcs/reel; E case: 400pcs/reel

How to order

Hongda CA45 Tantalum cap can cross these brands, you can easily to find the alternative choice to replace and realize cost reduction. Hongda Capacitors would like to do Pin to pin cross for you.

HD CA45 series      =      AVX (TAJ series)    =      Vishay (293D series)    =      Kemet (T491 series)

Tantalum capacitors Application 

Consumer Electronics: power supply circuits for smartphones, tablets, and wearable devices.

Automotive Electronics: high temperature tolerance and reliability.

Industrial and Medical Equipment: stable performance in high-reliability equipment, such as medical devices and industrial automation.

Tantalum cap has these Features and Benefits

• High Reliability: Emphasize the capacitor's reliability in demanding environments like industrial and automotive applications.
• Low ESR: Promote the low equivalent series resistance (ESR), which leads to better performance in power supply filtering and decoupling applications.
• Compact Size: Showcase the small form factor, which is essential for space-constrained designs in mobile and wearable devices.
• Stable Performance: Market the stable capacitance over a wide temperature range, ideal for critical applications like medical devices and aerospace systems.

When using SMD (Surface Mount Device) tantalum capacitors, special attention is required to ensure safety and stable performance. Below are some key issues to consider:

1. Polarity

Tantalum capacitors are polarized components and must be installed with the correct polarity (positive and negative terminals). If the capacitor is installed in reverse, it can lead to breakdown, heating, or even explosion. Therefore, it’s important to clearly mark the polarity in circuit design and strictly follow it during assembly and soldering.

2. Voltage Stress

The rated voltage of a tantalum capacitor (e.g., 16V) indicates the maximum safe operating voltage. In actual use, it’s recommended to maintain a safety margin, typically using 50%-80% of the rated voltage. For example, with a 16V tantalum capacitor, the operating voltage should ideally not exceed 12V. Exceeding the rated voltage may cause the capacitor to break down.

3. Surge Current

Tantalum capacitors are sensitive to surge currents. During power-up or sudden voltage changes, a large instantaneous current can damage the capacitor. Therefore, it is necessary to introduce surge current protection in the circuit, such as current-limiting resistors or soft-start circuits, to mitigate sudden voltage and current spikes.

4. Soldering Temperature and Time

Tantalum capacitors are sensitive to soldering temperature and duration. Excessive heat or prolonged soldering time can damage the capacitor. It is important to follow the manufacturer's soldering guidelines. The recommended soldering process is usually reflow soldering, ensuring that the soldering temperature and duration meet the component's requirements. The soldering temperature should not exceed 260°C, and the exposure time should be strictly controlled.

5. Derating in Circuit

Derating is an effective way to improve the reliability of tantalum capacitors. It is recommended that the working voltage of the capacitor not exceed 50%-80% of its rated voltage. By derating, you can significantly extend the life and reliability of the capacitor.

6. ESR and Ripple Current

Tantalum capacitors have low equivalent series resistance (ESR), which makes them perform well in power supply filtering and high-frequency circuits. However, excessive ripple current should be avoided. Too much ripple current can cause internal heating in the capacitor, reducing its lifespan or causing failure. Ensure that the applied ripple current in the circuit does not exceed the allowable range. If necessary, multiple capacitors can be paralleled to distribute the current load.

7. Temperature Range

Tantalum capacitors are sensitive to temperature, and the working environment must stay within the rated temperature range. The typical operating temperature range for tantalum capacitors is -55°C to 125°C. If the ambient temperature is too high, it may lead to performance degradation or failure of the capacitor.

8. Mechanical Stress and Encapsulation Protection

Tantalum capacitors should be protected from excessive mechanical stress during installation, such as PCB bending or excessive vibration, which can affect the capacitor’s reliability. To prevent failure due to mechanical stress during use, encapsulation protection in the design is recommended.

9. Electrolyte Leakage

Although tantalum capacitors are highly reliable under normal conditions, electrolyte leakage or failure can occur with improper use or aging. Therefore, it’s important to periodically inspect tantalum capacitors in circuits, especially in devices that operate in high-temperature and high-stress environments.

If you are looking for a replacement for current Tantalum cap, Hongda Capacitors is your best choice. We have professional engineer team to do apple to apple check of your parameters and recommend the equal type or most closely parts for you.

Welcome to share your RFQ or BOM to emily@hongdacap.com.hk