Genuine Icom 470µF High-Capacity Aluminum Electrolytic Capacitor for Power Supply Repair
The Icom 4510009680 is a high-capacity 470µF aluminum electrolytic capacitor rated at 25V, designed for professional repair and maintenance of Icom radio equipment. This genuine OEM component from the EEEFK series provides robust power supply filtering, voltage smoothing, and energy storage in transceiver power distribution circuits. The large capacitance value makes it ideal for main power supply rails and high-current applications.
Key Features
- Genuine Icom factory replacement part - guaranteed specifications and long-term reliability
- High capacitance: 470µF for superior power supply filtering and voltage stabilization
- Voltage rating: 25V DC suitable for main power supply and amplifier circuits
- EEEFK series professional-grade polymer aluminum electrolytic construction
- Surface-mount design with low ESR for efficient filtering performance
- Extended temperature range and long service life
- Low impedance characteristics for demanding power supply applications
Compatible Models
- Various Icom HF, VHF, and UHF transceiver models requiring high-capacity power filtering
- Commonly used in main power supply sections and amplifier stages
- Consult your radio's service manual or schematic diagram for exact component location
What's Included
- One (1) Icom 470µF 25V aluminum electrolytic capacitor
Application and Installation
Professional Installation Required: This large surface-mount electrolytic capacitor requires specialized soldering equipment and proper technique for installation. Due to the component's size and thermal mass, installation demands a high-wattage temperature-controlled soldering station, appropriate flux, and sufficient heat to achieve proper solder flow. This repair should only be performed by qualified electronics technicians or certified Icom service centers with experience in SMD component replacement.
Critical Polarity Information: Electrolytic capacitors are polarized components and must be installed with correct polarity orientation. The negative terminal is marked with a black stripe on the capacitor body. Installing an electrolytic capacitor with reversed polarity can cause immediate component failure, electrolyte venting, or potential safety hazards. Always verify polarity markings on both the capacitor and PCB before installation.
The large 470µF capacitance makes this component essential for bulk power supply filtering, reducing ripple voltage on main DC rails, energy storage in power amplifier circuits, and stabilizing high-current loads. This capacitor is typically found in the main power distribution section, serving as the primary filter after voltage regulators or in power amplifier supply circuits where large current demands require substantial energy storage capacity.
Installation Best Practices: Clean PCB pads thoroughly before installation. Apply adequate heat to both the capacitor terminals and PCB pads to ensure proper solder joint formation on the large thermal mass component. Use a preheater or hot air station if available to bring the entire board up to temperature. Verify proper polarity orientation before soldering. Allow adequate cooling time before handling or applying power. After installation, inspect solder joints carefully and test voltage levels before reassembly.
When to Replace
Electrolytic capacitors have a finite service life and may degrade over time due to heat, electrical stress, or age. Common failure symptoms include bulging or leaking capacitor body, reduced capacitance, increased ESR, power supply instability, excessive voltage ripple, audio hum or noise, transmit power fluctuations, or complete radio failure. High-capacity power supply capacitors are often replaced during preventive maintenance in older transceivers to ensure continued reliable operation.
Technical Specifications
- Capacitance: 470µF
- Voltage Rating: 25V DC
- Series: EEEFK (Panasonic FK Series Polymer Aluminum Electrolytic)
- Type: Polarized Aluminum Electrolytic
- Mounting: Surface-mount (SMD)
- Package: Large radial can with SMD base
- ESR: Low equivalent series resistance
Part Numbers
- Icom Part Number: 4510009680
- Component Specification: EEEFK1E471P
- Manufacturer Code: 470 (470µF), EFK (series), 6W3 (variant code)
