KEMET T491D227M006AT: Premium 220 F Tantalum Capacitor for Demanding Applications

The KEMET T491D227M006AT represents the gold standard in surface-mount tantalum capacitor technology, offering engineers an exceptional combination of high capacitance, reliability, and compact form factor. This comprehensive guide explores every technical aspect of this industry-leading component.

In-Depth Product Analysis

Manufacturer Credentials

Produced by KEMET Electronics - a global leader in capacitor technology with over 100 years of innovation - the T491D227M006AT benefits from cutting-edge manufacturing processes and rigorous quality control standards.

Detailed Specifications

Parameter	Value
Capacitance	220 F 20%
Voltage Rating	6.3V DC
ESR (20 C, 100kHz)	700m max
Temperature Range	-55 C to +125 C
Lifetime	2000 hours at 125 C
Package	2917 (7343 Metric)
Dimensions	7.3mm 4.3mm 3.1mm

Technical Advantages

Superior Performance Characteristics

The T491D227M006AT delivers:

• Stable capacitance across temperature variations
• Low leakage current for power-sensitive applications
• Moisture resistance (Molded case provides superior environmental protection)
• RoHS compliance meets environmental regulations

Reliability Testing

KEMET subjects the T491 series to:

• 100% surge current testing
• Extended thermal cycling (-55 C to +125 C)
• 85 C/85% RH humidity testing
• Mechanical shock/vibration validation

Application Scenarios

Primary Use Cases

The T491D227M006AT excels in:

1. Power Management
   • DC/DC converter input/output filtering
   • Voltage regulator decoupling
   • Bypass applications
2. Automotive Electronics
   • ECU power supplies
   • Infotainment systems
   • ADAS modules
3. Industrial Equipment
   • PLC power circuits
   • Motor drive systems
   • Sensor conditioning

Design Considerations

For optimal performance:

• Maintain 1mm clearance from adjacent components
• Follow KEMET's recommended reflow profile
• Implement proper derating ( 50% of rated voltage)

Comparative Analysis

vs. Aluminum Electrolytics

The T491D227M006AT offers:

• 50% smaller footprint than equivalent Al-Caps
• 3x longer operational lifetime
• Superior high-frequency performance

vs. MLCCs

Advantages include:

• More stable capacitance vs. bias voltage
• No piezoelectric effects
• Better DC leakage characteristics

Purchasing Information

The T491D227M006AT is available through:

• KEMET authorized distributors (Digi-Key, Mouser, RS Components)
• Direct from KEMET sales representatives
• Specialized electronic component suppliers

Note: Always verify authenticity by purchasing through authorized channels to avoid counterfeit components.

Technical Support Resources

KEMET provides:

• Detailed product datasheets
• SPICE models for circuit simulation
• Application-specific design guides
• FAE support for complex implementations

Conclusion

The KEMET T491D227M006AT stands as an optimal solution for engineers requiring high-capacitance, surface-mount tantalum capacitors that deliver uncompromising performance in space-constrained designs. Its combination of electrical characteristics, reliability metrics, and KEMET's quality assurance makes it a first-choice component for mission-critical applications across multiple industries.

For design engineers seeking components that won't compromise on performance, the T491D227M006AT represents one of the most reliable choices in its class, backed by KEMET's century of capacitor expertise.