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Home > Products > Capacitors > Tantalum Capacitors > T494X476M035ATAUTO
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T494X476M035ATAUTO

In Stock 9295 pcs Reference Price(In US Dollars)
500+
$3.5583
Manufacturer Part Number:
T494X476M035ATAUTO
Manufacturer / Brand
KEMET
Part of Description:
CAP TANT SMD LOW ESR
Datasheets:
T494X476M035ATAUTO(1).pdfT494X476M035ATAUTO(2).pdf
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 9295 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number T494X476M035ATAUTO
Manufacturer / Brand KEMET
Stock Quantity 9295 pcs Stock
Category Capacitors > Tantalum Capacitors
Description CAP TANT SMD LOW ESR
Lead Free Status / RoHS Status: RoHS Compliant
Series *
Package Tape & Reel (TR)
Condition New Original Stock
Warranty 100% Perfect Functions
Lead Time 2-3days after payment.
Payment Credit Card / PayPal / Telegraphic Transfer (T/T) / Western Union
Shipping by DHL / Fedex / UPS / TNT
Port HongKong
RFQ Email Info@IC-Components.com

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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Company Name : IC COMPONENTS LTD
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Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

What are the key design considerations when integrating the KEMET T494X476M035ATAUTO into a DC/DC converter output filter regarding ESR and ripple current handling?
The KEMET T494X476M035ATAUTO offers an ESR of 500 mΩ at 100 kHz, which supports efficient filtering in DC/DC converters by reducing power losses compared to standard ESR tantalum parts. In high ripple current scenarios, engineers should calculate the RMS ripple against the capacitor’s rated capability at the operating frequency and temperature, applying voltage derating to maintain thermal stability over the -55°C to 125°C range.
How does the case size and mounting of the T494X476M035ATAUTO affect PCB layout and thermal management in dense automotive or industrial designs?
The T494X476M035ATAUTO uses the X case size (7343-43), providing high volumetric efficiency for 47 µF at 35 V in a molded SMD package. Layout should account for adequate solder pad dimensions and clearance to manage heat dissipation during reflow and operation, particularly when placed near heat-generating components like power inductors or switches in long-term use.
When replacing an existing tantalum capacitor with the KEMET T494X476M035ATAUTO in a legacy industrial board, what electrical and mechanical differences need evaluation?
The KEMET T494X476M035ATAUTO is a low ESR variant in the T494 series, AEC-Q200: qualified for automotive-grade reliability. Migration requires verifying pin compatibility in the 7343 footprint, confirming that the lower ESR does not alter loop stability in the existing circuit, and checking that the 20% tolerance and MnO2 electrolyte behavior align with the original part’s derating and lifetime expectations at elevated temperatures.
Is the KEMET T494X476M035ATAUTO suitable for high dV/dt or low-impedance power supply rails without additional series resistance?
In low-impedance circuits, the T494X476M035ATAUTO benefits from its low ESR construction, but engineers typically apply voltage derating (often 50% or more below 35 V) to limit inrush current stress and reduce the risk of thermal runaway, especially during power-up transients or in applications with minimal source impedance.
What operating condition factors influence the long-term reliability of the T494X476M035ATAUTO in continuous industrial use at elevated ambient temperatures?
The KEMET T494X476M035ATAUTO is rated for 2000 hours at 125°C with RoHS3 compliance and MSL 1. Reliability in continuous operation depends on applied voltage versus rated 35 V, ambient temperature, and ripple current; lower voltage stress and good airflow extend the effective lifetime by minimizing electrolyte degradation in the solid MnO2 cathode.
When selecting between polymer tantalum and the KEMET T494X476M035ATAUTO for decoupling in a 24 V industrial control system, what trade-offs arise?
The KEMET T494X476M035ATAUTO provides stable capacitance with low ESR in a compact X case suitable for 35 V systems, while polymer alternatives often deliver even lower ESR and higher ripple capability but may require checking voltage derating margins and leakage current differences across the temperature range.
How should the configuration and voltage derating of the T494X476M035ATAUTO be approached in automotive electronics exposed to load dump and cold crank conditions?
For the T494X476M035ATAUTO in AEC-Q200: targeted applications, designers derate the 35 V rating to accommodate transient overvoltages from load dump while ensuring sufficient capacitance remains available during cold crank voltage dips, verifying that the resulting time constant and filtering performance meet the ECU or control unit requirements.
What practical differences should be considered when migrating from a standard ESR KEMET T491 series part to the T494X476M035ATAUTO in an existing filter design?
The T494X476M035ATAUTO features lower ESR than the comparable T491 series while maintaining similar 47 µF / 35 V ratings and X case size. This change can improve efficiency and reduce heating but may shift phase margins in feedback loops, requiring simulation or bench validation of the power stage stability and transient response.
In high-vibration industrial environments, are there integration constraints specific to the molded construction of the KEMET T494X476M035ATAUTO?
The molded SMD package of the T494X476M035ATAUTO provides mechanical robustness for vibration-prone assemblies. Board-level strain relief through proper pad design and avoidance of excessive flexure near the component help maintain long-term solder joint integrity under sustained mechanical stress.
When evaluating the KEMET T494X476M035ATAUTO for replacement of higher-voltage or different-tolerance tantalum capacitors, what design adjustments are commonly needed?
Substituting the T494X476M035ATAUTO (35 V, 20% tolerance) may involve adjusting upstream regulation or adding protection to handle the voltage rating limit, while the low ESR can enhance filtering but requires confirming that the capacitance variation with temperature and DC bias remains acceptable for the target circuit timing or hold-up behavior.

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