ECA-1HM221B Panasonic Capacitor Polarised (Capacitor, Polarized Radial Diameter) In Stock
The Panasonic ECA-1HM221B is a 220 µF, 50 V radial aluminum electrolytic capacitor from the M Series with a 2000-hour rated lifetime in a 10 mm x 12.5 mm through-hole package. It provides reliable bulk energy storage and filtering for AC-DC power supplies. Available in stock worldwide with competitive pricing for prototype and production runs.
- Manufacturer
- Panasonic
- Package
- Capacitor, Polarized Radial Diameter
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ECA-1HM221B Datasheet PDF
- Category
- Capacitor Polarised
- Price
- From $0.1337(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ECA-1HM221B?
- 220 µF capacitance at 50 V rating in a compact 10 mm diameter x 12.5 mm height radial through-hole package for space-efficient power supply filtering
- 2000-hour rated operational life at maximum temperature, ensuring long-term reliability in consumer and industrial power supply designs
- Panasonic M Series aluminum electrolytic construction with low ESR characteristics enabling effective 50/60 Hz and high-frequency ripple current suppression
What is ECA-1HM221B used for?
The ECA-1HM221B is a standard bulk filtering capacitor for AC-DC linear and switching power supplies operating at output voltages up to 35 V with a 50 V rated component. Its 220 µF value provides substantial charge reservoir for smoothing full-wave rectifier outputs in 30 W to 60 W power adapters and desktop supply units. The 10 mm x 12.5 mm radial package fits standard PCB footprints and is compatible with automatic radial insertion equipment in volume production.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the ECA-1HM221B datasheet?
ECA-1HM221B Datasheet DownloadOfficial datasheet from Panasonic
What are equivalent replacements for ECA-1HM221B?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What voltage and capacitance does the ECA-1HM221B offer for power supply bulk filtering?
The ECA-1HM221B provides 220 µF of capacitance rated at 50 V, suitable for bulk filtering on 24 V to 35 V DC output rails in linear and switching power supplies. The 220 µF charge reservoir reduces peak-to-peak output voltage ripple by approximately 50% compared to a 100 µF capacitor at equivalent load current, improving load regulation in regulated 24 V or 28 V industrial supply designs.
How does the 2000-hour lifetime rating of the ECA-1HM221B affect product design reliability calculations?
The 2000-hour lifetime at maximum rated temperature is the baseline for calculating the expected service life of the ECA-1HM221B using the 10°C-per-doubling Arrhenius rule. Operating the capacitor 10°C below its rated maximum temperature extends expected life to approximately 4000 hours. At 25°C below maximum temperature, projected life reaches 16000 hours, supporting multi-year service intervals in always-on industrial power supply designs.
In which power supply topologies does the ECA-1HM221B 10 mm x 12.5 mm radial package provide the best fit?
The 10 mm diameter, 12.5 mm height radial package of the ECA-1HM221B fits the standard capacitor footprint in AC-DC flyback converters, linear post-regulators, and bridge rectifier output stages rated from 20 W to 60 W. Its body height of 12.5 mm is within the common 15 mm PCB clearance zone used in commercial power adapters and open-frame supply designs, allowing use without mechanical interference in most standard enclosures.
Related Guides
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing
Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.
Jul 31, 2026
STEF05SGR 5 V eFuse Protection Design Guide
Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.
Jul 30, 2026
Why Buy from FindMyChip
About Panasonic
Panasonic is a leading electronic component manufacturer. FindMyChip sources Panasonic ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.6350 | $0.64 |
| 10+ | $0.4130 | $4.13 |
| 50+ | $0.3084 | $15.42 |
| 100+ | $0.2751 | $27.51 |
| 500+ | $0.1401 | $70.05 |
| 8000+ | $0.1337 | $1069.44 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
TPSD477M006R0100
AVX
Capacitor Polarised
TPSD227M006R0100
AVX
Capacitor Polarised
TPSD157M010R0100
AVX
Capacitor Polarised
TAJY686K020RNJ
AVX
Capacitor Polarised
TAJY685K050RNJ
AVX
Capacitor Polarised
TAJY107K016RNJ
AVX
Capacitor Polarised
TAJW475K035RNJ
AVX
Capacitor Polarised
TAJT106K016R
AVX
Capacitor Polarised
TAJR225M010R
AVX
Capacitor Polarised
TAJR225K016RNJ
AVX
Capacitor Polarised
TAJR106M006R
AVX
Capacitor Polarised
TAJE686M025R
AVX
Capacitor Polarised
TAJE476M035R
AVX
Capacitor Polarised
TAJE227M016R
AVX
Capacitor Polarised
TAJD476M025R
AVX
Capacitor Polarised
TAJD475M050R
AVX
Capacitor Polarised
TAJD227M010R
AVX
Capacitor Polarised
TAJD227K006RNJ
AVX
Capacitor Polarised
TAJD226M035R
AVX
Capacitor Polarised
TAJD226M020R
AVX
Capacitor Polarised
TAJD107M016R
AVX
Capacitor Polarised
TAJD107M010R
AVX
Capacitor Polarised
TAJC335M035RNJ
AVX
Capacitor Polarised
TAJC226M025RNJ
AVX
Capacitor Polarised