The Panasonic EET-ED2G221CA is a 220 µF, 400 V aluminum electrolytic capacitor from the TS-ED series, engineered for general-purpose power filtering and energy storage applications where high voltage tolerance and sustained performance are required. This radial snap-in design provides mechanical stability in environments subject to vibration while supporting through-hole mounting configurations commonly found in industrial power supplies, motor drives, and voltage regulation circuits.
With a rated voltage of 400 V and a ±20% tolerance, this component accommodates the voltage swings typical of rectified AC mains or intermediate DC bus architectures. The 220 µF capacitance delivers bulk energy storage suitable for smoothing ripple in off-line converters, inverter DC links, and high-power amplifier stages. The snap-in termination style simplifies assembly on PCBs designed for robust mechanical retention, reducing the risk of lead fatigue during thermal cycling or transport.
The capacitor exhibits an equivalent series resistance of 603 mOhms at 120 Hz, a characteristic that influences both power dissipation and filtering effectiveness in low-frequency applications. Ripple current handling reaches 1.42 A at 120 Hz and extends to 2.03 A at 100 kHz, enabling operation in switching power supplies where both line-frequency and high-frequency ripple components are present. This dual-frequency rating reflects the internal construction and electrolyte formulation optimized for mixed-frequency stress.
Lifetime performance is rated at 3000 hours at 105°C, a benchmark that informs thermal derating strategies in designs targeting extended service intervals. Operating temperature spans -25°C to 105°C, covering the range encountered in non-hermetic industrial equipment, HVAC controls, and renewable energy systems. The polar construction requires correct polarity orientation during installation to prevent dielectric breakdown or venting.
Physical dimensions include a 25.00 mm diameter and a maximum seated height of 40.00 mm, with a lead spacing of 10.00 mm, dimensions that align with standard snap-in footprints on power PCBs. The radial can package facilitates heat dissipation through the leads and body, a consideration in high-ambient or poorly ventilated enclosures. The component carries a Moisture Sensitivity Level of 1, indicating no special handling or baking procedures are necessary prior to soldering.
The EET-ED2G221CA is marked as obsolete in the Panasonic product line, though inventory remains available for legacy design support and service replacements. Engineers maintaining or repairing existing equipment should verify footprint compatibility and review suggested substitutes, including models such as
381LR221M400K022
,
381LR221M400K022
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
30627
381LQ221M400J032
, and
381LQ221M400J032
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
30702
B43504A9227M000
, when planning long-term sourcing. REACH compliance status is noted as affected, and the part is classified under ECCN EAR99 and HTSUS 8532.22.0040 for export and customs documentation.
B43504A9227M000
EPCOS - TDK Electronics
CAP ALUM 220UF 20% 400V SNAP
24968
EET-ED2G221CA (1)
Replacing Panasonic Electronic Components EET-ED2G221CA When a 220 µF 400 V Snap-In Capacitor Becomes Obsolete
Panasonic Electronic Components EET-ED2G221CA is an obsolete TS-ED series aluminum electrolytic capacitor, so replacement work usually begins when an existing power supply, inverter, industrial control board, or repair program still depends on the same electrical footprint. The main challenge is not simply finding another 220 µF 400 V capacitor, but confirming that ESR, ripple current, lifetime, can size, snap-in lead spacing, and thermal behavior remain compatible with the original circuit.
Potential equivalent or alternative part numbers for EET-ED2G221CA include:
| Candidate Part Number | Manufacturer |
|---|---|
|
381LR221M400K022
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
30627
| Cornell Dubilier / CDE |
|
381LQ221M400J032
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
30702
| Cornell Dubilier / CDE |
381LX221M400A022
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
21221
| Cornell Dubilier / CDE |
381LR221M400A012
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
11227
| Cornell Dubilier / CDE |
|
B43504A9227M000
EPCOS - TDK Electronics
CAP ALUM 220UF 20% 400V SNAP
24968
| EPCOS / TDK |
These parts should be evaluated as engineering replacement candidates, not automatic drop-in substitutes. A valid EET-ED2G221CA replacement must satisfy the circuit’s DC bus voltage, ripple current heating, expected service life, board hole pattern, clearance envelope, and procurement availability.
What the Panasonic EET-ED2G221CA TS-ED Capacitor Defines for Replacement Selection
The original Panasonic EET-ED2G221CA is a polarized aluminum electrolytic capacitor designed for through-hole snap-in mounting. Its 220 µF capacitance and 400 V rating place it in applications such as high-voltage DC link filtering, AC-DC power supply bulk storage, industrial equipment, motor-drive auxiliary supplies, and general-purpose high-voltage capacitor banks.
| Parameter | Panasonic EET-ED2G221CA Specification | Replacement Relevance |
|---|---|---|
| Capacitor type | Aluminum electrolytic, polarized | Replacement must maintain correct polarity and DC operating conditions |
| Capacitance | 220 µF | Affects hold-up time, ripple voltage, and loop stability in power supplies |
| Tolerance | ±20% | Alternatives with similar tolerance are usually acceptable if capacitance range fits the design margin |
| Rated voltage | 400 VDC | Replacement voltage rating should be equal or higher unless the circuit has verified derating margin |
| ESR | 603 mOhm at 120 Hz | Lower ESR may reduce heating but can alter inrush or damping behavior in some circuits |
| Ripple current | 1.42 A at 120 Hz; 2.03 A at 100 kHz | Candidate must handle actual ripple current at operating temperature and frequency |
| Lifetime | 3000 hours at 105°C | Useful for comparing thermal endurance, but real life depends on core temperature and ripple heating |
| Operating temperature | -25°C to +105°C | Replacement should match the expected ambient and internal hot-spot conditions |
| Mounting | Through-hole snap-in | Mechanical interchangeability depends on lead spacing and can dimensions |
| Lead spacing | 10.00 mm | Board compatibility depends on snap-in terminal pitch and terminal style |
| Diameter / height | 25 mm diameter, 40 mm seated height max | Alternatives must fit available board area, enclosure height, and nearby component clearance |
| Application class | General purpose | Suitable alternatives may be general-purpose or higher-performance industrial-grade capacitors |
For replacement decisions, voltage rating and capacitance are only the first filter. The 25 mm x 40 mm can size and 10 mm snap-in lead spacing strongly influence whether a part can be installed without PCB modification. Ripple current and ESR determine heating under load; a capacitor with the same capacitance and voltage but lower ripple capability may run hotter and age faster. Lifetime comparison also requires caution because the rated life is measured at maximum temperature, while real operating life improves significantly when temperature and ripple stress are reduced.
Engineering Review of EET-ED2G221CA Equivalent and Alternative Part Numbers
The following table compares the listed replacement candidates against Panasonic EET-ED2G221CA from an engineering selection perspective. Final validation should be based on the latest manufacturer datasheets, especially for ripple current, ESR, physical dimensions, terminal configuration, and endurance rating.
| Manufacturer | Part Number | Key Specifications | Product Features | Typical Applications | Why It Can Replace the Original Part | Main Differences or Limitations | Recommended Usage |
|---|---|---|---|---|---|---|---|
| Cornell Dubilier / CDE |
381LR221M400K022
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
30627
| 220 µF, 400 V, aluminum electrolytic, snap-in, ±20% class | High-voltage snap-in capacitor family intended for bulk energy storage and filtering | AC-DC power supplies, DC bus filtering, industrial equipment, general-purpose capacitor replacement | Matches the main electrical class of EET-ED2G221CA: 220 µF capacitance, 400 V rating, polarized snap-in construction | Mechanical suffix may indicate a different case size or terminal configuration; ESR and ripple current must be checked against the Panasonic 603 mOhm and 2.03 A high-frequency rating | Good first candidate when a same-value 220 µF 400 V snap-in replacement is required and PCB fit is confirmed |
| Cornell Dubilier / CDE |
381LQ221M400J032
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
30702
| 220 µF, 400 V, aluminum electrolytic, snap-in, ±20% class | Often selected where higher endurance or improved ripple handling may be needed within the same voltage/capacitance range | Switching power supplies, bulk storage rails, industrial control power stages | Provides the same nominal capacitance and voltage class as EET-ED2G221CA, supporting similar DC link and smoothing functions | May use a larger or taller can depending on suffix; electrical performance may differ from the TS-ED series and should not be assumed identical | Suitable when available board height and diameter allow a possible larger capacitor for improved operating margin |
| Cornell Dubilier / CDE |
381LX221M400A022
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
21221
| 220 µF, 400 V, aluminum electrolytic, snap-in, ±20% class | Long-life snap-in series option within CDE’s high-voltage electrolytic portfolio | Power converters, UPS auxiliary supplies, lighting ballasts, industrial DC bus filters | Same capacitance and voltage rating make it a practical alternative for obsolete EET-ED2G221CA sourcing | ESR, ripple rating, and terminal pitch must be compared directly; mechanical suffix may not match Panasonic dimensions | Appropriate where lifetime and sourcing availability are stronger priorities than exact Panasonic series continuity |
| Cornell Dubilier / CDE |
381LR221M400A012
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
11227
| 220 µF, 400 V, aluminum electrolytic, snap-in, ±20% class | Compact high-voltage snap-in capacitor option, depending on case code | Repair, maintenance, legacy power boards, general DC smoothing | Electrical value aligns with the original Panasonic 220 µF 400 V requirement | If the case is smaller, ripple current and thermal endurance may be lower; confirm suitability in high-ripple applications | Best considered for space-constrained boards after verifying ripple current and temperature rise |
| EPCOS / TDK |
B43504A9227M000
EPCOS - TDK Electronics
CAP ALUM 220UF 20% 400V SNAP
24968
| 220 µF, 400 V, aluminum electrolytic, snap-in, ±20% class | EPCOS/TDK snap-in capacitor series for high-voltage DC applications | Industrial power supplies, frequency converters, DC link circuits, energy storage | Same nominal capacitance and voltage rating; established manufacturer for industrial electrolytic capacitors | Case dimensions, terminal layout, ESR, and endurance may differ from Panasonic TS-ED; qualification testing is recommended in continuous-duty designs | Strong alternative when a TDK/EPCOS sourcing path is preferred or when industrial capacitor availability is favorable |
Among these options,
381LR221M400K022
and
381LR221M400K022
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
30627
381LX221M400A022
are often evaluated first because they preserve the same 220 µF 400 V snap-in capacitor category and are commonly associated with bulk filtering applications.
381LX221M400A022
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
21221
381LQ221M400J032
may be attractive when the design can accept a larger package or when ripple/lifetime margin is desired.
381LQ221M400J032
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
30702
381LR221M400A012
is more dependent on mechanical and thermal verification, especially if it uses a smaller can.
381LR221M400A012
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
11227
B43504A9227M000
provides a manufacturer-diverse alternative, useful when supply chain strategy requires a non-CDE source.
B43504A9227M000
EPCOS - TDK Electronics
CAP ALUM 220UF 20% 400V SNAP
24968
Comparing EET-ED2G221CA Replacement Options by Fit, Ripple Stress, Lifetime, and Procurement Risk
A practical replacement decision should consider how the capacitor behaves in the actual circuit, not only how closely the datasheet headline values match. The table below compares the replacement candidates from design, repair, and sourcing viewpoints.
| Decision Factor | 381LR221M400K022 | 381LQ221M400J032 | 381LX221M400A022 | 381LR221M400A012 | B43504A9227M000 |
|---|---|---|---|---|---|
| Electrical compatibility with EET-ED2G221CA | Strong match at nominal 220 µF / 400 V level | Strong nominal match; may offer different ripple/endurance balance | Strong nominal match for capacitance and voltage | Strong nominal match, but case-code-dependent performance must be checked | Strong nominal match from another established manufacturer |
| ESR and ripple current suitability | Good candidate if datasheet ripple equals or exceeds Panasonic requirement | Potentially favorable where larger case size improves thermal behavior | Often considered for long-life or robust filtering applications | Needs closer review if compact size reduces ripple capability | Must be compared directly against Panasonic ESR and ripple values |
| Mechanical compatibility | Confirm diameter, height, and 10 mm snap-in pitch | May be taller or wider depending on suffix; check enclosure clearance | Verify can size and terminal style before approval | May fit tighter spaces, but terminal configuration still needs confirmation | Mechanical compatibility depends on EPCOS/TDK case code and snap-in layout |
| Thermal and lifetime behavior | Suitable if ripple heating remains within datasheet limits | Good option when thermal headroom is needed and space permits | Suitable for designs where endurance is a selection priority | More sensitive to ripple heating if smaller construction is used | Suitable after confirming endurance rating at 105°C or applicable temperature |
| Performance trade-off | Balanced alternative for many legacy power boards | May trade larger size for improved operating margin | Good balance for industrial replacement programs | May trade thermal margin for compactness | Provides sourcing diversity and industrial-grade availability |
| Reliability consideration | Requires qualification under actual ripple and ambient temperature | Favorable where derating can be improved | Favorable for long-service applications if ratings align | Use with caution in high-ripple or high-temperature locations | Good candidate for qualified second-source strategy |
| Package availability | CDE snap-in family availability should be checked by suffix | Availability may depend on case and lead code | Often useful in cross-reference sourcing | Availability may vary by exact suffix | TDK/EPCOS supply channel may differ from CDE options |
| Cost considerations | Often competitive as a direct-value substitute | May cost more if larger or higher-performance | May carry a premium if long-life grade is selected | May be economical if performance is adequate | Pricing depends on TDK/EPCOS stock and regional availability |
| Best-fit scenario | General replacement for obsolete Panasonic EET-ED2G221CA when dimensions match | Designs needing more ripple or lifetime margin with available space | Industrial boards where long-term operation is prioritized | Space-limited replacements with verified ripple stress | Second-source or manufacturer-diverse replacement strategy |
| Main limitation | Not automatically drop-in without mechanical and ESR verification | Possible fit issue in compact assemblies | Datasheet confirmation required for exact endurance and ripple match | Potentially reduced thermal margin | Mechanical and electrical differences from Panasonic TS-ED must be validated |
For a low-risk substitution, begin by checking capacitance, voltage, polarity, and snap-in lead spacing, then compare ESR and ripple current at the relevant operating frequency. After that, confirm can diameter, seated height, terminal geometry, and clearance around heat sources. If the capacitor operates near rectifiers, heat sinks, transformers, or enclosed power modules, lifetime modeling based on actual temperature is more useful than comparing rated endurance alone.
If the goal is the closest general-purpose replacement for Panasonic EET-ED2G221CA,
381LR221M400K022
is a logical first part to evaluate. If the design benefits from greater operating margin and can accept possible size differences,
381LR221M400K022
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
30627
381LQ221M400J032
or
381LQ221M400J032
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
30702
381LX221M400A022
may be stronger candidates. For compact assemblies,
381LX221M400A022
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
21221
381LR221M400A012
can be considered after ripple and temperature verification. For supply diversification,
381LR221M400A012
Cornell Dubilier Electronics (CDE)
CAP ALUM 220UF 20% 400V SNAP
11227
B43504A9227M000
is a practical EPCOS / TDK alternative.
B43504A9227M000
EPCOS - TDK Electronics
CAP ALUM 220UF 20% 400V SNAP
24968
For pricing, availability, and sourcing support for EET-ED2G221CA replacement parts, quotations can be requested through IC-Components.com or by emailing Info@IC-Components.com.
