UFW2A221MHD1TO Equivalent & Substitute Parts

Part Overview

The UFW2A221MHD1TO is a 220 µF, 100 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for 2000 hours at 85°C and is designed for audio applications. The part carries a "Not For New Designs" status, indicating it is obsolete or superseded. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and evaluate performance improvements offered by alternative manufacturers or series.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage Rating	100 V
Tolerance	±20%
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.492" (12.50 mm)
Height (Max)	1.063" (27.00 mm)
Lifetime Rating	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UFW2A221MHD1TO is determined by strict equivalence in the following parameters:

Capacitance: 220 µF (exact match required)
Voltage Rating: 100 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Case Diameter: 0.492" (12.50 mm) (exact match required)
Height: 1.063" (27.00 mm) (exact match required)

Substitute parts are grouped into three categories based on performance characteristics:

Upgrade Substitutes: Parts offering improved lifetime ratings or extended operating temperature ranges while maintaining all core electrical and mechanical parameters.

Parametric Equivalents: Parts with identical electrical and mechanical specifications, differing only in series designation or manufacturer.

Cross-Manufacturer Alternatives: Parts from different manufacturers meeting all specified parameters and compliance requirements.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Lead Spacing	Case Dia	Height	Product Status	RoHS
UFW2A221MHD1TO	Nichicon	UFW	220 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	Not For New Designs	ROHS3
UHW2A221MHD1TO	Nichicon	UHW	220 µF	100 V	±20%	10000 Hrs @ 105°C	-40°C ~ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	Not For New Designs	ROHS3
UVR2A221MHD1TO	Nichicon	UVR	220 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	Not For New Designs	ROHS3
UKW2A221MHD1TO	Nichicon	UKW	220 µF	100 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	Not For New Designs	ROHS3
ECA-2AHG221B	Panasonic Electronic Components	NHG-A	220 µF	100 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	0.197" (5.00 mm)	0.492" (12.50 mm)	1.063" (27.00 mm)	Active	ROHS3

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): UVR2A221MHD1TO and UKW2A221MHD1TO are parametric equivalents to UFW2A221MHD1TO. Both maintain identical electrical and mechanical specifications, including 2000-hour lifetime at 85°C and -40°C to 85°C operating range. Selection between these Nichicon series depends on application-specific ripple current requirements and availability.

For Enhanced Performance: UHW2A221MHD1TO offers extended lifetime (10000 hours at 105°C) and wider operating temperature range (-40°C to 105°C) while maintaining identical mechanical form factor and electrical ratings. This upgrade is suitable for applications requiring improved reliability and thermal margin.

For Active Product Status and Automotive Compliance: ECA-2AHG221B from Panasonic is the only part with Active product status and carries AEC-Q200 automotive qualification. It provides extended operating temperature range (-55°C to 105°C) and 2000-hour lifetime at 105°C. This part is recommended for new designs and applications requiring automotive-grade components. All parts are ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can UFW2A221MHD1TO be directly replaced with UVR2A221MHD1TO or UKW2A221MHD1TO? A: Yes. Both parts are parametric equivalents with identical capacitance (220 µF), voltage rating (100 V), tolerance (±20%), and mechanical dimensions. They share the same lead spacing (5.00 mm), case diameter (12.50 mm), and height (27.00 mm). Electrical performance characteristics including ripple current ratings are comparable.

Q: What is the advantage of UHW2A221MHD1TO over the original UFW2A221MHD1TO? A: UHW2A221MHD1TO provides a 5x improvement in lifetime rating (10000 hours at 105°C versus 2000 hours at 85°C) and extends the maximum operating temperature from 85°C to 105°C. The mechanical form factor remains identical, enabling direct board-level substitution with enhanced reliability.

Q: Is ECA-2AHG221B suitable for new designs? A: Yes. ECA-2AHG221B is the only part in this group with Active product status. It is recommended for new designs and carries AEC-Q200 automotive qualification, making it suitable for automotive and mission-critical applications.

Q: Are all substitute parts mechanically interchangeable? A: Yes. All listed parts share identical mechanical specifications: 0.197" (5.00 mm) lead spacing, 0.492" (12.50 mm) case diameter, and 1.063" (27.00 mm) maximum height. All are through-hole radial can packages suitable for PCB mounting in the same footprint.

Q: Do all parts meet RoHS compliance? A: Yes. All parts listed are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference between Nichicon series UFW, UVR, UKW, and UHW? A: These represent different Nichicon product lines with varying performance characteristics. UFW, UVR, and UKW share identical 2000-hour lifetime at 85°C specifications. UHW is an enhanced series with extended lifetime and temperature rating. Selection depends on application requirements and availability.

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