ECA-2EM221 Equivalent & Substitute Parts

Part Overview

The ECA-2EM221 is a 220 µF, 250 V aluminum electrolytic capacitor in radial, can package manufactured by Panasonic Electronic Components. This part operates across -25°C to 85°C with a rated lifetime of 2000 hours at 85°C and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for ongoing production and maintenance applications requiring 220 µF, 250 V aluminum electrolytic capacitors with radial through-hole mounting.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage - Rated	250 V
Tolerance	±20%
Polarization	Polar
Package / Case	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.295" (7.50mm)
Size / Dimension	0.709" Dia (18.00mm)
Height - Seated (Max)	1.654" (42.00mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the ECA-2EM221 is determined by strict equivalence in the following parameters:

Capacitance: 220 µF (exact match required)
Voltage Rating: 250 V (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can (exact match required)
Mounting: Through Hole (exact match required)
Lead Spacing: 0.295" (7.50mm) (exact match required)
Physical Dimensions: 0.709" Dia × 1.654" Height (exact match required)

Substitute parts may vary in the following parameters without affecting functional compatibility:

Lifetime rating and operating temperature range
ESR (Equivalent Series Resistance)
Ripple current specifications
Manufacturer and series designation
Product status (active vs. obsolete)

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp.	Operating Temp.	ESR @ 120Hz	Lead Spacing	Size / Dimension	Height (Max)	Product Status	RoHS Status
ECA-2EM221	Panasonic	220 µF	250 V	±20%	2000 Hrs @ 85°C	-25°C ~ 85°C	-	0.295" (7.50mm)	0.709" Dia (18.00mm)	1.654" (42.00mm)	Obsolete	ROHS3 Compliant
EEU-EE2E221	Panasonic	220 µF	250 V	±20%	10000 Hrs @ 105°C	-25°C ~ 105°C	-	0.295" (7.50mm)	0.709" Dia (18.00mm)	1.654" (42.00mm)	Obsolete	ROHS3 Compliant
227KFM250MLCG	Cornell Dubilier / Illinois Capacitor	220 µF	250 V	±20%	10000 Hrs @ 105°C	-40°C ~ 105°C	1.13 Ohm @ 120Hz	0.295" (7.50mm)	0.709" Dia (18.00mm)	1.654" (42.00mm)	Active	ROHS3 Compliant
227TXK250M	Cornell Dubilier / Illinois Capacitor	220 µF	250 V	±20%	5000 Hrs @ 105°C	-25°C ~ 105°C	1.1304 Ohm @ 120Hz	0.295" (7.50mm)	0.709" Dia (18.00mm)	1.654" (42.00mm)	Active	ROHS3 Compliant
227CKE250MLCG	Cornell Dubilier / Illinois Capacitor	220 µF	250 V	±20%	2000 Hrs @ 105°C	-25°C ~ 105°C	1.5071 Ohm @ 120Hz	0.295" (7.50mm)	0.709" Dia (18.00mm)	1.634" (41.50mm)	Active	ROHS3 Compliant
B43821F2227M000	EPCOS - TDK Electronics	220 µF	250 V	±20%	3000 Hrs @ 85°C	-40°C ~ 85°C	840 mOhm @ 120Hz	0.295" (7.50mm)	0.709" Dia (18.00mm)	1.654" (42.00mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain exact equivalence in capacitance, voltage rating, tolerance, package type, mounting configuration, and physical dimensions. Selection among substitutes should be based on the following criteria:

Active Product Status: Parts 227KFM250MLCG, 227TXK250M, 227CKE250MLCG, and B43821F2227M000 are active products with ongoing manufacturer support and availability. EEU-EE2E221 is obsolete but remains in stock.

Compliance: All parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Thermal Performance: Parts with higher lifetime ratings (EEU-EE2E221 at 10000 Hrs @ 105°C and 227KFM250MLCG at 10000 Hrs @ 105°C) provide extended operational life in elevated temperature environments compared to the original ECA-2EM221 specification of 2000 Hrs @ 85°C.

Operating Temperature Range: 227KFM250MLCG and B43821F2227M000 extend the lower operating limit to -40°C, providing broader environmental compatibility.

Physical Fit: 227CKE250MLCG has a maximum seated height of 1.634" (41.50mm), which is 0.020" shorter than the original specification. Verify clearance in height-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute ECA-2EM221 with any of the listed parts?

A: Yes. All listed parts are electrically and mechanically equivalent. They share identical capacitance (220 µF), voltage rating (250 V), tolerance (±20%), package type (radial, can), mounting method (through hole), lead spacing (0.295"), and physical dimensions (0.709" diameter). Differences in lifetime rating, ESR, and operating temperature range do not affect functional substitution.

Q: What is the difference between direct substitutes and upgrade parts?

A: Direct substitutes (EEU-EE2E221, 227KFM250MLCG, 227TXK250M) maintain equivalent performance characteristics. Upgrade parts (227CKE250MLCG, B43821F2227M000) may offer enhanced thermal performance or extended operating ranges but remain mechanically and electrically compatible.

Q: Does the ESR difference affect compatibility?

A: ESR variations among substitutes do not prevent functional substitution. ESR differences may affect ripple current handling and heat dissipation characteristics. Select parts based on your circuit's ripple current requirements and thermal environment.

Q: Are all parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What should I consider when choosing between active and obsolete substitutes?

A: Active products (227KFM250MLCG, 227TXK250M, 227CKE250MLCG, B43821F2227M000) offer long-term availability and manufacturer support. Obsolete parts (EEU-EE2E221) may have limited stock and no future production. For new designs or long-term production, prioritize active parts.

Q: Can I use 227CKE250MLCG if my PCB has tight height constraints?

A: 227CKE250MLCG has a maximum seated height of 1.634" (41.50mm), which is 0.020" shorter than the original ECA-2EM221 specification of 1.654" (42.00mm). Verify that this dimension change does not conflict with your PCB layout or component clearances.

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