T491D226K035AT Kemet Capacitor Polarised (Other) In Stock
Kemet T491D226K035AT is a 22µF, 35V, 10% tolerance MnO2 solid tantalum SMD capacitor in a molded D-case (7343) package. Designed for bulk decoupling and filtering in power management circuits. Available in stock with worldwide shipping.
- Manufacturer
- Kemet
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- T491D226K035AT Datasheet PDF
- Category
- Capacitor Polarised
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 22µF capacitance at 35V rating in a D-case (7343) molded SMD package for high-capacity bulk decoupling in power rails
- MnO2 solid electrolyte construction provides stable capacitance over -55°C to 125°C temperature range with low ESR
- 10% capacitance tolerance with reliable tantalum chemistry for long-lifetime filtering in telecom and industrial power supplies
Applications
The Kemet T491D226K035AT is used as a bulk decoupling and energy storage capacitor on 12V, 24V, and regulated 3.3V to 28V power rails in telecom equipment, industrial control boards, and military-grade electronics. Its 22µF solid tantalum construction maintains stable capacitance under DC bias and temperature variation, making it suitable for input and output filtering in DC-DC converters and linear regulators. The D-case SMD package enables automated reflow assembly in space-constrained high-reliability designs requiring low-ESR polarized capacitors.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for T491D226K035AT:
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Frequently Asked Questions
What is the capacitance, voltage rating, and tolerance of the Kemet T491D226K035AT?
The T491D226K035AT has a nominal capacitance of 22µF with a 10% tolerance (K-grade) and a voltage rating of 35V DC. This combination is commonly used for bulk energy storage and decoupling on 5V, 12V, and 24V power rails in industrial power supplies where tantalum's stable capacitance under bias is required.
Why choose a MnO2 solid tantalum capacitor like the T491D226K035AT over an aluminum electrolytic for power rail filtering?
MnO2 solid tantalum capacitors like the T491D226K035AT offer significantly lower ESR—typically below 0.5Ω at 100kHz—compared to aluminum electrolytic capacitors of equivalent 22µF capacitance. This lower ESR reduces voltage ripple on 35V power rails in switching converters and extends service life at temperatures up to 125°C without electrolyte evaporation issues that limit aluminum electrolytic capacitors in sealed enclosures.
What PCB footprint does the D-case (7343) package of the T491D226K035AT require?
The T491D226K035AT uses a D-case (EIA 7343) SMD package measuring approximately 7.3mm x 4.3mm footprint with a 2.8mm height profile. This standard footprint is compatible with common land patterns specified in IPC-7351 for 7343-size tantalum capacitors, simplifying PCB design reuse across different manufacturer-sourced 22µF D-case tantalum alternatives.
Over what temperature range does the T491D226K035AT maintain its 22µF capacitance, and does it suit automotive or industrial use?
The T491D226K035AT solid tantalum capacitor operates over a -55°C to 125°C temperature range, maintaining stable capacitance within its 10% tolerance band across most of this range. This makes it suitable for industrial control equipment, embedded computing power supplies, and military-grade electronics requiring reliable 22µF decoupling at 35V across wide temperature extremes.
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