ECA-1AM221B Equivalent & Substitute Parts

Part Overview

The ECA-1AM221B is a 220 µF, 10 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This component is rated for 2000 hours at 85°C and operates across the temperature range of -40°C to 85°C. The part is Active in product status and fully compliant with RoHS3 and REACH regulations.

Equivalent and substitute parts are necessary when the original component becomes unavailable, when design requirements demand enhanced performance characteristics such as higher voltage ratings or extended lifetime specifications, or when alternative packaging formats are required for manufacturing optimization.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage - Rated	10 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.197" (5.00mm)
Size / Dimension	0.248" Dia (6.30mm)
Height - Seated (Max)	0.480" (12.20mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the ECA-1AM221B is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Capacitance value: 220 µF (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)

Secondary Compatibility Parameters:

Voltage - Rated: 10 V minimum (equal or higher voltage ratings are acceptable)
Operating Temperature Range: Must encompass -40°C to 85°C minimum
Lead Spacing: 0.197" (5.00mm) preferred for direct PCB compatibility
Physical dimensions: Size and height must accommodate existing PCB footprints

Acceptable Variations:

Lifetime @ Temperature: Extended ratings (5000 Hrs @ 105°C) represent performance enhancements
Ripple Current specifications: Higher ratings indicate improved performance
Packaging format: Different packaging (Bulk, Cut Tape, Tape & Box) does not affect electrical compatibility
Manufacturer: Alternative manufacturers acceptable if all electrical and mechanical parameters align

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp	Lead Spacing	Size / Dimension	Height (Max)	Product Status
ECA-1AM221B	Panasonic	220 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.248" Dia (6.30mm)	0.480" (12.20mm)	Active
ECA-1CM221B	Panasonic	220 µF	16 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.248" Dia (6.30mm)	0.480" (12.20mm)	Active
EEU-FR1A221B	Panasonic	220 µF	10 V	±20%	5000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00mm)	0.248" Dia (6.30mm)	0.500" (12.70mm)	Active
EEU-FR1C221B	Panasonic	220 µF	16 V	±20%	5000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00mm)	0.248" Dia (6.30mm)	0.500" (12.70mm)	Active
ECA-1AM221	Panasonic	220 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.098" (2.50mm)	0.248" Dia (6.30mm)	0.480" (12.20mm)	Active
ECA-1AM221I	Panasonic	220 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.098" (2.50mm)	0.248" Dia (6.30mm)	0.480" (12.20mm)	Active
ECE-A1AKA221	Panasonic	220 µF	10 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	0.098" (2.50mm)	0.315" Dia (8.00mm)	0.276" (7.00mm)	Active
ECE-A1AKS221	Panasonic	220 µF	10 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	0.098" (2.50mm)	0.315" Dia (8.00mm)	0.236" (6.00mm)	Active
UVR1A221MED1TA	Nichicon	220 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.248" Dia (6.30mm)	0.492" (12.50mm)	Obsolete
UVR1C221MED1TA	Nichicon	220 µF	16 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00mm)	0.248" Dia (6.30mm)	0.492" (12.50mm)	Obsolete
ESMG100ELL221ME11D	Chemi-Con	220 µF	10 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.079" (2.00mm)	0.197" Dia (5.00mm)	0.492" (12.50mm)	Active

Engineering Selection Recommendations

Direct Equivalents (Same Voltage Rating):

ECA-1AM221, ECA-1AM221I, and UVR1A221MED1TA maintain identical electrical specifications to the ECA-1AM221B with 10 V rating and 2000 Hrs @ 85°C lifetime. These parts differ only in packaging format (Bulk, Tape & Box, Cut Tape) and lead spacing. The Panasonic variants (ECA-1AM221, ECA-1AM221I) feature reduced lead spacing of 0.098" (2.50mm) compared to the original 0.197" (5.00mm), requiring PCB footprint verification before selection. The Nichicon UVR1A221MED1TA maintains identical lead spacing and physical dimensions but carries Obsolete product status.

Voltage-Upgraded Substitutes (Higher Voltage Rating):

ECA-1CM221B and UVR1C221MED1TA provide 16 V rated voltage while maintaining 220 µF capacitance and 2000 Hrs @ 85°C lifetime. These parts are electrically compatible in applications where the original 10 V rating is sufficient, as higher voltage-rated capacitors operate safely at lower applied voltages. Both maintain the 0.197" (5.00mm) lead spacing and 0.248" (6.30mm) diameter of the original part. ECA-1CM221B is Active status; UVR1C221MED1TA is Obsolete.

Enhanced Performance Substitutes (Extended Lifetime):

EEU-FR1A221B and EEU-FR1C221B represent performance upgrades with 5000 Hrs @ 105°C lifetime rating compared to the original 2000 Hrs @ 85°C. These FR-A series parts extend operating temperature range to 105°C and maintain identical lead spacing and diameter. Height increases marginally from 0.480" to 0.500" (12.70mm), requiring clearance verification. Both are Active status and suitable for applications demanding enhanced reliability.

Alternative Manufacturers:

UVR1A221MED1TA (Nichicon) and ESMG100ELL221ME11D (Chemi-Con) provide cross-manufacturer equivalents. The Nichicon part matches lead spacing and dimensions precisely but is Obsolete. The Chemi-Con part features significantly reduced lead spacing (0.079" vs 0.197") and smaller diameter (0.197" vs 0.248"), requiring complete PCB redesign and is not recommended as a direct substitute without layout modification.

Compliance Status:

All recommended substitutes maintain RoHS3 compliance and REACH Unaffected status, matching the original part's regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can I use ECA-1CM221B (16 V) in place of ECA-1AM221B (10 V)?

A: Yes. The ECA-1CM221B is electrically compatible. Higher voltage-rated capacitors operate safely at lower applied voltages. If your circuit applies 10 V or less, the 16 V rated part functions identically. Verify that the identical physical dimensions (0.248" diameter, 0.480" height, 0.197" lead spacing) fit your PCB footprint.

Q: What is the difference between ECA-1AM221 and ECA-1AM221B?

A: Both parts are electrically identical with 220 µF, 10 V, ±20% tolerance, and 2000 Hrs @ 85°C lifetime. The primary difference is lead spacing: ECA-1AM221 has 0.098" (2.50mm) spacing versus ECA-1AM221B's 0.197" (5.00mm). This requires PCB footprint compatibility verification before substitution.

Q: Should I use EEU-FR1A221B instead of ECA-1AM221B?

A: The EEU-FR1A221B offers enhanced performance with 5000 Hrs @ 105°C lifetime versus 2000 Hrs @ 85°C, and extends operating temperature to 105°C. Electrical specifications (220 µF, 10 V, ±20%) remain identical. Height increases from 0.480" to 0.500" (12.70mm). Use this upgrade when extended reliability or higher temperature operation is required and PCB clearance permits the additional height.

Q: Why is UVR1A221MED1TA marked Obsolete?

A: Obsolete status indicates the manufacturer (Nichicon) has discontinued production. While existing inventory may be available, long-term supply cannot be guaranteed. For new designs or long-term production, select Active status parts such as ECA-1AM221B, ECA-1CM221B, or EEU-FR1A221B.

Q: Can I use ESMG100ELL221ME11D (Chemi-Con) as a substitute?

A: The ESMG100ELL221ME11D matches electrical specifications but differs significantly in mechanical design: lead spacing is 0.079" (2.00mm) versus 0.197" (5.00mm), and diameter is 0.197" (5.00mm) versus 0.248" (6.30mm). Direct PCB substitution is not possible without layout modification. This part is suitable only for new designs where the smaller footprint is advantageous.

Q: What packaging formats are available?

A: The ECA-1AM221B is supplied in standard packaging. Equivalent parts are available in Bulk, Cut Tape (CT), and Tape & Box (TB) formats. Packaging format does not affect electrical performance; selection depends on manufacturing process requirements and order quantities.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and REACH Unaffected status, matching the original ECA-1AM221B regulatory requirements.

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