EEUFC1H561S - 560µF 50V FC Series Aluminum Electrolytic | Panasonic
MPN: EEUFC1H561S ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.1 | $1.10 |
| 10 | $0.99 | $9.90 |
| 100 | $0.78 | $78.00 |
| 500 | $0.66 | $330.00 |
| 1,000 | $0.55 | $550.00 |
EEUFC1H561S Overview
An aluminum electrolytic capacitor is a polarized, wet-electrolyte energy storage device that uses an etched aluminum foil anode, a dielectric aluminum-oxide layer, a paper separator soaked in an organic electrolyte, and a conductive cathode coating to deliver high volumetric capacitance at low cost. They sit in the passive-component hierarchy as: capacitor > electrolytic capacitor > aluminum electrolytic capacitor > radial-lead aluminum electrolytic capacitor, and they remain the dominant choice for bulk energy storage and ripple filtering in the 1µF–100,000µF / 6.3V–450V range where MLCCs become physically or economically impractical.
The EEUFC1H561S delivers three headline characteristics: 560µF nominal capacitance, 50V rated DC working voltage, and 5000-hour lifetime at 105°C. Its capacitance tolerance is ±20% measured at 120Hz / 20°C, and DC leakage current is bounded by ≤0.01 CV or 3µA (whichever is greater) after a 2-minute charge period. The FC series is engineered for low impedance at high switching frequencies, making it well suited to the rectified output of secondary-side switching supplies where the capacitor must attenuate high-frequency ripple without excessive self-heating.
Internally the device uses Panasonic's etched-foil anode technology with a wet organic electrolyte and a controlled cathode coating that achieves a low equivalent series resistance (ESR) suitable for 100kHz+ switching converters. Compared with the older HD series, the FC series offers lower impedance and ripple-tolerant operation in a comparable can size. The radial through-hole lead geometry provides strong mechanical bonding for wave-soldered assemblies and robust thermal conduction through the leads to the PCB copper.
Typical applications include 48V-to-12V / 24V-to-12V SMPS output filtering, secondary-side smoothing of AC-DC rectifier outputs, audio amplifier power-supply bypass, motor-driver bulk-cap roles, industrial control-board decoupling, and LED driver output reservoirs. The 50V rating provides comfortable margin above 24V rectified rails and accommodates 24V nominal automotive transient busses.
When designing with this part, observe the ±20% capacitance tolerance and the 3µA / 0.01·CV leakage limit when calculating hold-up times, and verify the ripple-current rating against the actual switching frequency of the converter. The 5000-hour endurance at 105°C derates substantially at higher hotspot temperatures, so thermal modeling of the surrounding heat sources (transformers, MOSFETs, rectifiers) is recommended.
This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet, providing a single reference for component selection and second-source validation.
Drop-in alternatives for EEUFC1H561S — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
EEUFC1H561L
✅ Drop-In📋 Reference alternative (not in catalog)
EEUFR1H561S
✅ Drop-In📋 Reference alternative (not in catalog)
EEUFC1J561S
✅ Drop-In📋 Reference alternative (not in catalog)
UVR1H561MPD
✅ Drop-In📋 Reference alternative (not in catalog)
ZLH500M50M
✅ Drop-In📋 Reference alternative (not in catalog)
EEUFC1H471S
✅ Drop-In📋 Reference alternative (not in catalog)
EEUFC1H561S Maximum Ratings & Electrical Characteristics
| Capacitance | 560 µF |
| Rated DC Voltage (URdc) | 50 V |
| Capacitance Tolerance | ±20% (120 Hz / 20°C) |
| DC Leakage Current | ≤ 0.01·CV or 3 µA after 2 minutes (whichever is greater) |
| Category Temperature Range | -55°C to +105°C |
| Endurance (Rated Life) | 5000 hours @ 105°C (at rated voltage) |
| Series | FC (low impedance, high frequency) |
| Construction | Aluminum electrolytic, wet electrolyte, polarized |
| Mounting Type | Through-Hole (Radial Leaded) |
| Package / Case | Radial Can, Φ18 mm x 15 mm |
| Lead Spacing | 7.5 mm (nominal radial pitch) |
| Dielectric / Class | Aluminum (wet) electrolytic |
| Polarity | Polarized (observe stripe / longer lead marking) |
| Operating Temperature Range | -55°C to +105°C |
| Diameter | 18 mm |
| Length / Height (seated) | 15 mm |
| Mounting Feature | Through-Hole Mount |
| RoHS Status | Compliant |
EEUFC1H561S Pin Configuration
| Pin 1 | Anode (+) — Positive lead (longer lead, unmarked side) |
| Pin 2 | Cathode (-) — Negative lead (shorter lead, stripe-marked side; can is also negative) |
Typical Applications
EEUFC1H561S is suitable for 6 applications: Switched-Mode Power Supply Output Filtering, Audio Amplifier Power Rail Bulk Filtering, Industrial DC Bus Decoupling, DC-DC Converter Post-Filter, Automotive 24V System Filtering, LED Driver Output Reservoir.
Switched-Mode Power Supply Output Filtering
The EEUFC1H561S serves as a primary output reservoir capacitor in 24V-to-12V or 48V-to-12V switched-mode power supplies (SMPS) where its 560µF bulk capacitance and 50V rating provide ample margin over rectified 24V rails. In a typical forward or flyback converter, the FC series' low impedance at 100kHz switching frequencies minimizes output ripple while the 5000-hour endurance at 105°C supports industrial-grade design. The radial Φ18x15mm can dissipates heat efficiently through the leads to PCB copper pours. Pair with a smaller ceramic bypass (1-10µF X7R) for high-frequency noise suppression.
Recommended
Audio Amplifier Power Rail Bulk Filtering
In Class-AB and Class-D audio amplifiers operating from ±30V to ±50V rails, the EEUFC1H561S provides bulk energy storage and supply-ripple rejection on the positive rail. Its 560µF capacitance supports transient current demands during peak music signals (often 3-10x the quiescent draw), preventing rail collapse and intermodulation distortion. The 50V rating accommodates ±35V supplies with derating margin. Designers often parallel two EEUFC1H561S units per rail to halve ESR and double ripple-current handling; bypass with film or MLCC for highest-fidelity applications where aluminum microphony must be minimized.
Recommended
Industrial DC Bus Decoupling
The EEUFC1H561S finds application in industrial 24V and 48V DC bus decoupling for PLCs, motor drives, and process-control equipment. Its 50V rating handles 24V nominal with surge headroom, and the 560µF capacitance smooths the rectified output of AC-DC converters feeding motor-driver H-bridges. The -55°C to +105°C operating range suits outdoor or cabinet-mounted installations, while the 5000-hour endurance at 105°C supports long-life industrial design. Multiple units parallel at each bus node reduce impedance and distribute thermal stress for higher system reliability.
Recommended
DC-DC Converter Post-Filter
As a post-filter capacitor on the output of buck, boost, or buck-boost DC-DC converters, the EEUFC1H561S attenuates switching-frequency ripple and load-transient spikes. In a 12V-to-5V buck converter powering digital logic or microcontrollers, the FC series' low impedance at the converter's 100-500kHz switching frequency reduces output ripple to within tolerance. The 560µF capacitance provides ample energy for transient load steps; designers should also include a small ceramic (10-100µF X7R) immediately at the load for high-frequency decoupling. The radial through-hole construction suits through-hole DC-DC module designs.
Recommended
Automotive 24V System Filtering
In 24V commercial-vehicle electrical systems (trucks, buses, construction equipment), the EEUFC1H561S provides bulk filtering for 24V rails derived from the vehicle battery and alternator. The 50V rating handles 24V nominal with substantial margin against load-dump transients (often 36V peaks). The 560µF capacitance supports infotainment, telematics, and sensor-cluster power inputs. Note that the EEUFC1H561S is not AEC-Q200 qualified, so for under-hood or safety-critical applications an automotive-grade part is recommended. The radial package suits through-hole PCB designs typical in commercial-vehicle electronics.
Recommended
LED Driver Output Reservoir
The EEUFC1H561S is well suited to LED driver output reservoirs in high-brightness LED lighting applications where the driver operates from 24V-48V input. In constant-current LED drivers using buck or buck-boost topologies, the FC series capacitor smooths the rectified output and provides energy storage for PWM dimming transients. Its 560µF capacitance supports the pulsed current demands of high-power LED arrays (10W to 100W+). The 5000-hour endurance at 105°C suits indoor and outdoor luminaires with adequate thermal management. Parallel units can be added for higher-power LED strings.
Recommended
Recommended Products Summary
Engineering reference data for EEUFC1H561S — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | EEUFC1H561L | EEUFR1H561S | EEUFC1J561S | UVR1H561MPD | ZLH500M50M | EEUFC1H471S |
|---|---|---|---|---|---|---|---|
| Package | Radial Φ18x15mm, 7.5mm pitch | Radial Φ18x15mm, 7.5mm pitch - same | Radial Φ18x15mm, 7.5mm pitch - same | Radial Φ18x15mm, 7.5mm pitch - same | Radial Φ18x15mm, 7.5mm pitch - same | Radial Φ18x15mm, 7.5mm pitch - same | Radial Φ16x15mm, 7.5mm pitch - smaller |
| Brand | Panasonic | Panasonic | Panasonic | Panasonic | Nichicon | Rubycon | Panasonic |
| Capacitance | 560 µF | 560 µF | 560 µF | 560 µF | 560 µF | 560 µF | 470 µF (-16%) |
| Rated Voltage | 50 V | 50 V | 50 V | 63 V (+26%) | 50 V | 50 V | 50 V |
| Endurance @ 105°C | 5000 h | 10000 h (+100%) | 5000-10000 h | 5000 h | 5000 h | 10000 h (+100%) | 5000 h |
| Series / Family | FC (low impedance) | FC long-life | FR (lower Z) | FC (63V) | UVR (Nichicon general) | ZLH (Rubycon low-Z) | FC (470µF) |
| Capacitance Tolerance | ±20% | ±20% | ±20% | ±20% | ±20% | ±20% | ±20% |
| Operating Temperature | -55°C to +105°C | -55°C to +105°C | -55°C to +105°C | -55°C to +105°C | -55°C to +105°C | -40°C to +105°C | -55°C to +105°C |
Key Differentiators
- Panasonic FC series optimized for high-frequency switching supplies (vs EEUHD1H561S)
- Long-life L variant available with identical dimensions (vs EEUFC1H561L)
- Higher voltage J variant for 24V transient headroom (vs EEUFC1J561S)
Design Notes
The 5000-hour endurance rating is specified at 105°C hotspot with rated voltage applied continuously. For each 10°C reduction in actual hotspot temperature, lifetime approximately doubles (Arrhenius 10°C-rule). At 95°C, expected life is ~10000 hours; at 85°C, ~20000 hours. Place the EEUFC1H561S away from heat sources such as transformers, MOSFETs, and rectifiers, and verify the actual case temperature using a thermocouple in qualification testing.
When wave-soldering, observe the manufacturer's recommended preheat profile (typically 120°C peak within 30 seconds). The radial leads are designed for through-hole insertion; ensure holes are sized for 0.8mm leads. Provide adequate lead-bend stress relief if the cap is mounted vertically near vibration sources. Maintain at least 5mm clearance between adjacent radial caps to allow convection cooling air to circulate.
Never reverse polarity. The white stripe marks the negative (cathode); the longer lead is positive (anode). Reverse polarity destroys the oxide dielectric and can cause thermal runaway with venting of the electrolyte. Never exceed the 50V rated voltage, including during transients; the absolute surge ceiling is typically 57.5V (115% of rated). For 24V automotive rails with load-dump transients above 36V, use the EEUFC1J561S 63V variant instead.
Compliance Information
RoHS compliant per Panasonic product page. Lead-free process compatibility confirmed. AEC-Q200 qualification not explicitly listed - for automotive designs, request a Q200-qualified variant from Panasonic. Halogen-free status not explicitly stated.
