ECA1HM331 Panasonic Capacitor Polarised (Capacitor, Polarized Radial Diameter) In Stock
Panasonic ECA1HM331 is a 330 µF, 50 V radial-leaded aluminum electrolytic capacitor with a 10 mm diameter wet aluminum dielectric and RoHS-compliant lead-free construction. Ideal for bulk energy storage and power supply filtering in consumer and industrial electronics. From $0.35 in stock with worldwide shipping.
- Manufacturer
- Panasonic
- Package
- Capacitor, Polarized Radial Diameter
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ECA1HM331 Datasheet PDF
- Category
- Capacitor Polarised
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 330 µF capacitance at 50 V rating provides substantial bulk energy storage in a compact 10 mm diameter radial package
- Wet aluminum electrolytic construction with only 0.165 mA leakage current ensures low self-discharge for long-term energy retention in filtering circuits
- RoHS-compliant (Pb-free, JESD-609 e3) and REACH-compliant construction meets global environmental regulations for consumer and industrial applications
Applications
The ECA1HM331 is commonly used as a bulk decoupling and energy storage capacitor in switched-mode power supply (SMPS) output stages, where its 330 µF capacitance at 50 V smooths rectified DC voltages to reduce ripple below 50 mV. It is also well-suited for motor drive input filter banks in industrial equipment where transient current demands of several amperes must be met without voltage droop. Additionally, this capacitor serves audio amplifier power rail filtering in consumer electronics requiring low-noise 50 V supply rails.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| Factory Lead Time | 30 Weeks, 1 Day |
| YTEOL | 7 |
| Capacitance | 330 µF |
| Capacitor Type | ALUMINUM ELECTROLYTIC CAPACITOR |
| Diameter | 10mm |
| Dielectric Material | ALUMINUM (WET) |
| JESD-609 Code | e3 |
| Leakage Current | 0.165mA |
| Mounting Feature | THROUGH HOLE MOUNT |
| Negative Tolerance | 20% |
| Package Shape | CYLINDRICAL PACKAGE |
| Package Style | Radial |
| Packing Method | BULK |
| Polarity | POLARIZED |
| Positive Tolerance | 20% |
| Rated (DC) Voltage (URdc) | 50V |
| Ripple Current | 500mA |
| Surface Mount | NO |
| Tan Delta | 0.12 |
| Terminal Finish | Tin (Sn) |
| Terminal Pitch | 5mm |
| Terminal Shape | WIRE |
| Package | Capacitor, Polarized Radial Diameter |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8532.22.00.20 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What voltage and capacitance ratings make the ECA1HM331 suitable for SMPS output filtering applications?
The ECA1HM331 offers 330 µF capacitance at a 50 V voltage rating, providing sufficient charge reservoir to suppress ripple on rectified DC rails in switched-mode power supplies switching at 50 kHz to 200 kHz. The 10 mm diameter radial package allows dense placement in multi-capacitor filter banks on SMPS PCBs targeting output currents from 1 A to 5 A.
How does the ECA1HM331's leakage current specification affect battery-powered or long-idle circuit designs?
With a leakage current of only 0.165 mA at rated 50 V, the ECA1HM331 draws minimal standby power from the supply rail during idle periods. In battery-powered designs with a 1000 mAh cell, this leakage alone would cause less than 1.5 mAh of drain over 9 hours of idle time, making it acceptable for portable industrial instruments that cycle between active and sleep states.
Which environmental compliance certifications does the ECA1HM331 carry, and why does that matter for global distribution?
The ECA1HM331 is RoHS-compliant with a lead-free JESD-609 e3 code and is fully REACH-compliant. These certifications are mandatory for products sold in the European Union and are increasingly required by North American and Asian OEMs. With a standard 30-week factory lead time, sourcing globally requires distributors with in-stock inventory of REACH-qualified 330 µF / 50 V radial aluminum electrolytic capacitors.
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