ECA-2AM220B Equivalent & Substitute Parts

Part Overview

The ECA-2AM220B is a 22 µF, 100 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This through-hole component is rated for 2000 hours at 85°C and is designed for general-purpose applications requiring reliable energy storage and filtering. The part is currently active in production with full RoHS3 compliance.

Equivalent and substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from qualified alternatives that meet the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Capacitance	22 µF
Voltage Rating	100 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00mm)
Case Diameter	0.248" (6.30mm)
Height (Seated Max)	0.480" (12.20mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ECA-2AM220B is determined by strict equivalence across the following parameters:

Capacitance value: 22 µF (exact match required)
Voltage rating: 100 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime specification: 2000 Hrs @ 85°C (exact match required)
Operating temperature range: -40°C ~ 85°C (exact match required)
Polarization: Polar (exact match required)
Mounting type: Through Hole (exact match required)
Package configuration: Radial, Can (exact match required)

Three substitute parts meet these core electrical and mechanical criteria: SK220M100ST (Cornell Dubilier Electronics), UKL2A220MPD (Nichicon), and UVR2A220MED (Nichicon). Each maintains identical capacitance, voltage, tolerance, lifetime, temperature range, and polarization specifications. Physical dimensions and lead spacing vary within acceptable ranges for through-hole PCB mounting applications.

Parameter Comparison

Parameter	ECA-2AM220B (Panasonic)	SK220M100ST (CDE)	UKL2A220MPD (Nichicon)	UVR2A220MED (Nichicon)
Capacitance	22 µF	22 µF	22 µF	22 µF
Voltage Rating	100 V	100 V	100 V	100 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ 85°C	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Polarization	Polar	Polar	Polar	Polar
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.197" (5.00mm)	0.138" (4.60mm)	0.197" (5.00mm)	0.098" (2.50mm)
Case Diameter	0.248" (6.30mm)	0.315" (8.00mm)	0.394" (10.00mm)	0.248" (6.30mm)
Height (Seated Max)	0.480" (12.20mm)	0.512" (13.00mm)	0.531" (14.60mm)	0.492" (12.50mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Not For New Designs	Obsolete

Engineering Selection Recommendations

SK220M100ST is the preferred substitute for new designs and ongoing production. This Cornell Dubilier Electronics part maintains active product status, carries full RoHS3 compliance, and meets all core electrical specifications. The reduced lead spacing (0.138" vs. 0.197") and increased case diameter (0.315" vs. 0.248") require PCB layout verification but do not affect electrical performance.

UKL2A220MPD is a qualified substitute with identical lead spacing and compatible physical dimensions. However, this Nichicon part carries a "Not For New Designs" status, limiting its use to legacy system maintenance or existing production runs where design changes are not feasible.

UVR2A220MED is not recommended for new applications. This Nichicon part is classified as obsolete and carries reduced lead spacing (0.098"), creating potential PCB compatibility issues. Use is restricted to repair or replacement scenarios where no other alternatives are available.

Frequently Asked Questions (FAQ)

Q: Can SK220M100ST be used as a direct replacement for ECA-2AM220B on existing PCBs?

A: SK220M100ST differs in lead spacing (0.138" vs. 0.197") and case diameter (0.315" vs. 0.248"). PCB layout verification is required to confirm pad spacing compatibility. If the PCB was designed specifically for the ECA-2AM220B footprint, physical modification may be necessary.

Q: Why is UKL2A220MPD marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development and recommends alternative parts for new product designs. The part remains available for existing applications but should not be selected for new development projects.

Q: Is UVR2A220MED suitable for production use?

A: UVR2A220MED is classified as obsolete and should not be used in new or ongoing production. The reduced lead spacing (0.098") creates additional PCB compatibility risks. This part is suitable only for emergency repairs when no other options are available.

Q: Do all substitute parts meet the same RoHS and REACH compliance requirements?

A: Yes. All three substitute parts—SK220M100ST, UKL2A220MPD, and UVR2A220MED—are ROHS3 compliant and REACH unaffected, matching the compliance profile of the ECA-2AM220B.

Q: What is the impact of different ESR values on circuit performance?

A: SK220M100ST specifies 4.83 Ohm ESR. The ECA-2AM220B and other substitutes do not provide ESR data in the available specifications. ESR affects ripple current handling and thermal performance. If ESR is a critical design parameter, direct measurement or manufacturer consultation is required.

Q: Are there physical space constraints I should consider when substituting?

A: Yes. UKL2A220MPD has the largest footprint (0.394" diameter, 0.531" height), while UVR2A220MED has the smallest lead spacing (0.098"). Verify PCB layout clearances and pad spacing before finalizing any substitution.

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