Screw Terminal Aluminum Electrolytic Capacitor 3300uF 250V
This screw-terminal aluminum electrolytic capacitor, rated at 3300 µF and 250 V, is engineered for large-bulk energy storage and high-voltage smoothing tasks. It employs a cylindrical aluminum can, wound aluminum foils, liquid electrolyte, and secure screw-post terminals for strong mechanical and electrical connections. The 250 V DC rating allows for substantial voltage headroom in demanding circuits.
When incorporated into a power circuit, this capacitor serves as an energy buffer: it smooths DC rails, absorbs transients, and supplies surge currents when loads change suddenly. The screw-terminal design helps reduce series resistance and inductance, enabling more effective high-current handling compared with standard leaded terminations. Its size and form are tailored for power electronics, industrial supplies and high-voltage filter banks.
Mechanically, the component is significantly larger than low-voltage types, often with wide diameter and tall height to accommodate the 3300 µF capacity at 250 V. The screw posts support heavy bus-bar or lug connections rather than light leads. Because aluminum electrolytic capacitors depend on electrolyte volume and temperature, proper mounting, ventilation, derating of ripple current and ambient temperature control are critical to achieving long life and reliability in such high-capacitance/high-voltage applications.
Features:
- Screw-terminal posts for strong, low-impedance electrical connection.
- High capacitance of 3300 µF at a 250 V DC rating.
- Polarized aluminum-electrolytic construction suited for DC applications.
- Bulk energy storage and smoothing for demanding power circuits.
- Low-impedance connection format to handle high ripple current and large bursts.
- Robust mechanical packaging for industrial or high-voltage systems.
- Suitable for heavy-duty mounting and bus-bar connection rather than light wire leads.
- Designed for long-term service in power-electronic smoothing, link and filter roles.
Specifications:
| Specification | Typical / example value |
|---|---|
| Capacitance: | 3300 µF |
| Rated voltage: | 250 V DC |
| Capacitance tolerance: | ±20% (typical for large aluminum electrolytic) |
| Case/terminal style: | Screw-terminal posts (chassis/bus mounting) |
| ESR (typical): | ~ 36–45 mΩ (for screw‐terminal 3300 µF/250 V types) |
| Life rating example: | 10,000 hours at 85 °C for some series |
| Mounting style: | Chassis or bus-bar (screw-terminal) |
| Operating temperature: | Example: –40 °C to +85 °C (varies by series) |
| Dimensions example: | Diameter ~65 mm × Height ~105 mm for some models |
Applications:
- DC link smoothing in power converters.
- High-voltage power supply filter capacitor.
- Inverter and motor-drive energy storage.
- Surge and transient current buffering in industrial electronics.
Package Contents:
- 1x Screw Terminal Aluminum Electrolytic Capacitor 3300uF 250V
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