ALUMINUM ORGANIC CAPACITORS # Technical Documentation: A700X187M006ATE015 Tantalum Capacitor
Manufacturer : KEMET
Component Type : Solid Tantalum Surface Mount Capacitor
Series : A700
Last Updated : October 2024
## 1. Application Scenarios
### Typical Use Cases
The A700X187M006ATE015 is specifically designed for high-reliability applications requiring stable capacitance in compact form factors. Typical implementations include:
Power Supply Filtering
- Secondary filtering in switch-mode power supplies (SMPS)
- Output filtering for voltage regulators and LDOs
- DC-DC converter input/output decoupling
- Ripple current suppression in power conversion circuits
Signal Conditioning
- Analog signal path coupling and decoupling
- Timing circuits in oscillator and clock circuits
- Sample-and-hold circuits in data acquisition systems
- Active filter networks in audio and communication systems
Energy Storage Applications
- Backup power for memory and real-time clock circuits
- Peak current support for motor drivers and LED arrays
- Temporary energy storage in pulsed load applications
### Industry Applications
Automotive Electronics
- Engine control units (ECUs) and transmission control modules
- Advanced driver assistance systems (ADAS)
- Infotainment systems and dashboard electronics
- Lighting control modules and power distribution centers
*Advantages*: Excellent temperature stability (-55°C to +125°C), high reliability under vibration, AEC-Q200 qualified options available
*Limitations*: Requires derating for automotive voltage transients, limited surge current capability
Medical Equipment
- Portable medical devices and patient monitors
- Diagnostic imaging equipment
- Surgical instruments and implantable devices
- Medical-grade power supplies
*Advantages*: High volumetric efficiency, stable electrical parameters, low leakage current
*Limitations*: Requires strict quality control for critical applications, higher cost compared to alternatives
Industrial Control Systems
- Programmable logic controllers (PLCs)
- Motor drives and motion control systems
- Process control instrumentation
- Industrial communication equipment
*Advantages*: Robust construction for harsh environments, long operational lifetime, minimal capacitance drift
*Limitations*: Sensitive to reverse voltage, requires careful handling during assembly
Aerospace and Defense
- Avionics systems and flight control computers
- Radar and communication systems
- Satellite electronics and ground support equipment
- Military-grade computing platforms
*Advantages*: High reliability under extreme conditions, radiation-resistant options, extended temperature range capability
*Limitations*: Higher cost, limited availability for certain military grades
### Practical Advantages and Limitations
Key Advantages
- High Capacitance Density : 187µF in compact case size (typically 7343 metric)
- Low ESR : Typically 15mΩ at 100kHz, enabling efficient power delivery
- Stable Performance : Minimal capacitance variation with temperature and voltage
- Long Service Life : Expected operational lifetime exceeding 2000 hours at maximum ratings
- Moisture Resistance : Compatible with reflow soldering processes
Notable Limitations
- Voltage Sensitivity : Requires minimum 50% voltage derating for reliable operation
- Current Limitations : Limited surge current capability compared to electrolytic capacitors
- Polarity Constraints : Strictly polarized device - reverse voltage can cause catastrophic failure
- Cost Considerations : Higher unit cost compared to ceramic or aluminum electrolytic alternatives
## 2. Design Considerations
### Common Design Pitfalls and Solutions
Voltage Derating Issues
*Pitfall*: Operating at or near rated voltage (6.3V) without adequate derating
*Solution*: Implement minimum 50% voltage derating (maximum 3.15V operating voltage)
*Implementation*: Select higher voltage rating or implement protective circuitry
Surge Current Protection
*Pitfall*: In
