ST-47000uF-100V
High-capacitance screw terminal capacitor with 47000uF and 100V for industrial inverters.
Product Overview
Description
The ST-47000uF-100V is a high-capacitance screw terminal aluminum electrolytic capacitor designed for industrial inverter applications. With 47000uF capacitance and 100V rating, it provides excellent DC bus filtering for motor drives and inverters.
This capacitor features M8 screw terminals for secure high-current connections. The 51mm diameter case with base mounting provides stable mechanical installation.
Rated for 5,000 hours at 85C with 18A ripple current capability, this capacitor is suitable for industrial motor drives, inverters, and welding equipment.
Product Series
ST
Primary Application
Industrial inverters
Key Features
- Very high capacitance 47000uF
- 100V DC rating
- M8 screw terminals
- High ripple current 18A
- Base mounting
Specifications
| Capacitance | 47000uF +/-20% |
|---|---|
| Voltage Rating | 100V DC |
| Ripple Current | 18A @ 85C, 120Hz |
| Temperature Range | -40C to +85C |
| Lifetime | 5,000 hours @ 85C |
| Terminals | M8 Screw |
| Dimensions | 51mm dia x 80mm L |
Applications
Industrial inverters
Industrial automation and control
Motor drives
Motor drive and control systems
Welding equipment
Electronic system design
DC bus filtering
Electronic system design
FAE Expert Insights
"The ST-47000uF-100V is an excellent choice for 90V DC bus applications in industrial motor drives. The 47000uF capacitance provides excellent energy storage and ripple filtering for inverter input. The M8 screw terminals handle the high currents typical of motor drive applications. I recommend this capacitor for inverters in the 5-15kW range. The base mounting provides secure mechanical installation in industrial environments."
Excellent for motor drives; 47000uF for DC bus; M8 terminals for high current; base mounting for industrial use
— Michael Zhang, BeiLuo
Frequently Asked Questions
What is the maximum ripple current?
The rated ripple current is 18A at 85C and 120Hz. This very high ripple current capability makes it suitable for high-power inverter applications. At lower temperatures, the capacitor can handle proportionally higher currents. Proper thermal management is essential to handle the heat generated by ripple current.
For applications exceeding 18A, consider parallel connection or larger case sizes.
What is the expected lifetime?
Rated lifetime is 5,000 hours at 85C. Using Arrhenius equation, lifetime extends to approximately 20,000 hours at 65C. Every 10C reduction doubles lifetime. Proper voltage derating further extends lifetime.
Operate at lowest practical temperature for maximum lifetime.
What are the terminal specifications?
This capacitor features M8 screw terminals for secure high-current connections. The terminals accept M8 bolts or screws with washers. Torque specifications are provided in the datasheet. Proper torque ensures good electrical connection and prevents loosening from vibration.
Use proper M8 hardware and torque to datasheet specifications.
What mounting is required?
This capacitor requires base mounting using the integrated mounting bracket. Mounting holes accept M8 bolts. Proper mounting ensures mechanical stability and heat dissipation. Mounting torque should follow datasheet specifications.
Use proper M8 mounting hardware and follow torque specifications.
What voltage derating is recommended?
Industry standard is 80% derating. For 100V capacitor, maximum operating voltage is 80V. This provides margin for voltage transients and improves reliability. For critical applications, 50% derating may be used.
Design for 80% voltage derating minimum.