EEE-FK1K4R7P Panasonic Capacitor Polarised (Other) In Stock
The Panasonic EEE-FK1K4R7P is a surface-mount aluminum electrolytic capacitor with 4.7 µF capacitance and an 80 V voltage rating in the FK series SMD package. It features low ESR, long service life, and a compact footprint suitable for power supply filtering in high-density PCB designs. Available in stock worldwide with fast shipping.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- EEE-FK1K4R7P Datasheet PDF
- Category
- Capacitor Polarised
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4.7 µF capacitance at 80 V rating for bulk energy storage and filtering in high-voltage SMD designs
- Low ESR FK series construction for reduced power loss in DC-DC converter output stages
- Surface-mount package enabling automated reflow assembly in compact high-density PCB layouts
- Long operational life rated for high-temperature environments up to 105°C
Applications
The EEE-FK1K4R7P is widely used in switch-mode power supply (SMPS) output filtering, DC-DC converter decoupling, and bulk energy storage on high-voltage rails up to 80 V. Its low-ESR SMD construction makes it ideal for industrial power modules, motor drive boards, and server power circuitry where board space is limited but reliable capacitor performance is critical. It is also suitable for LED driver circuits and inverter designs requiring long-life SMD capacitors.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the capacitance and voltage rating of the EEE-FK1K4R7P, and how does it affect circuit design?
The EEE-FK1K4R7P has a capacitance of 4.7 µF and a voltage rating of 80 V. This combination is well suited for DC bus filtering and bulk energy storage in power supplies operating on rails between 24 V and 72 V, providing enough hold-up capacitance while maintaining a safe voltage derating margin of at least 20% below the 80 V maximum rating.
What maximum operating temperature does the Panasonic FK series support, and why does it matter for SMPS designs?
The Panasonic FK series aluminum electrolytic capacitors are rated for a maximum operating temperature of 105°C, which is critical for switch-mode power supply designs where ambient plus self-heating can push component temperatures well above 85°C. Using a 105°C-rated capacitor in these conditions extends operational life significantly compared to standard 85°C-rated parts, often achieving 5,000 hours or more at rated temperature.
When is the EEE-FK1K4R7P a better choice than a multilayer ceramic capacitor (MLCC) for 80 V rail filtering?
For filtering on an 80 V rail where 4.7 µF capacitance is required, the EEE-FK1K4R7P is more cost-effective than high-voltage MLCCs, which at 80 V and 4.7 µF would require large 1210 or 2220 case sizes and cost several times more per unit. The aluminum electrolytic also maintains its capacitance more predictably across DC bias voltage, unlike MLCCs that can lose up to 70% of their rated capacitance at high DC bias voltages.
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