Nichicon UVR2D221MHD Equivalent & Substitute Parts

Part Overview

The Nichicon UVR2D221MHD is a 220 µF, 200 V aluminum electrolytic capacitor in radial, can package with a rated lifetime of 2000 hours at 85°C. This part carries a "Not For New Designs" status, indicating it has been superseded in Nichicon's product line. Finding equivalent or substitute components is necessary for ongoing production support, legacy system maintenance, and design flexibility when the primary part becomes unavailable.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage Rating	200 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.295" (7.50mm)
Case Diameter	0.709" Dia (18.00mm)
Height (Seated Max)	1.476" (37.50mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UVR2D221MHD is determined by the following criteria:

Primary Substitution Parameters:

Capacitance: 220 µF (exact match required)
Voltage Rating: 200 V minimum (equal or higher acceptable)
Tolerance: ±20% (exact match)
Lead Spacing: 0.295" (7.50mm) (exact match for PCB compatibility)
Case Diameter: 0.709" Dia (18.00mm) (exact match for mechanical fit)
Height: 1.476" (37.50mm) maximum (exact match for clearance)
Mounting Type: Through Hole (exact match)
Package Type: Radial, Can (exact match)
Polarization: Polar (exact match)

Secondary Considerations:

Lifetime rating at operating temperature
Operating temperature range
Ripple current capability
Product status and availability
RoHS and REACH compliance

Parts are grouped into three categories: Direct equivalents (identical electrical and mechanical specifications), Upgrades (improved lifetime or temperature rating with identical form factor), and Similar parts (minor dimensional or performance variations within acceptable tolerance).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ Temp	Operating Temp Range	Case Dia	Height	Product Status	Ripple Current @ 120 Hz	Ripple Current @ 10 kHz
UVR2D221MHD	Nichicon	220 µF	200 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.709" (18.00mm)	1.476" (37.50mm)	Not For New Designs	810 mA	1.296 A
UAQ2D221MHD	Nichicon	220 µF	200 V	2000 Hrs @ 105°C	-40°C ~ 105°C	0.709" (18.00mm)	1.476" (37.50mm)	Active	575 mA	920 mA
UVK2D221MHD	Nichicon	220 µF	200 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.630" (16.00mm)	1.476" (37.50mm)	Not For New Designs	700 mA	1.12 A
UVK2E221MHD	Nichicon	220 µF	250 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.709" (18.00mm)	1.476" (37.50mm)	Not For New Designs	680 mA	1.088 A
ESMG201ELL221MMP1S	Chemi-Con	220 µF	200 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.709" (18.00mm)	1.457" (37.00mm)	Active	810 mA	1.215 A @ 100 kHz
EKMG201ELL221MMP1S	Chemi-Con	220 µF	200 V	2000 Hrs @ 105°C	-40°C ~ 105°C	0.709" (18.00mm)	1.457" (37.00mm)	Discontinued at DiGi Electronics	575 mA	862.5 mA @ 100 kHz
250PK220MEFC18X35.5	Rubycon	220 µF	250 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.709" (18.00mm)	1.476" (37.50mm)	Active	680 mA	816 mA
250PX220MEFC18X35.5	Rubycon	220 µF	250 V	2000 Hrs @ 105°C	-40°C ~ 105°C	0.709" (18.00mm)	1.476" (37.50mm)	Active	485 mA	582 mA
B43821A2227M000	EPCOS - TDK Electronics	220 µF	200 V	3000 Hrs @ 85°C	-40°C ~ 85°C	0.709" (18.00mm)	1.457" (37.00mm)	Active	770 mA	Not specified
EKMQ251ELL221MMP1S	Chemi-Con	220 µF	250 V	2000 Hrs @ 105°C	-40°C ~ 105°C	0.709" (18.00mm)	1.457" (37.00mm)	Active	485 mA	727.5 mA @ 100 kHz
ESMQ251ELL221MMP1S	Chemi-Con	220 µF	250 V	2000 Hrs @ 85°C	-40°C ~ 85°C	0.709" (18.00mm)	1.457" (37.00mm)	Active	680 mA	1.02 A @ 100 kHz

Engineering Selection Recommendations

Direct Equivalent (Same Electrical & Mechanical Specifications):

ESMG201ELL221MMP1S (Chemi-Con) is the closest direct equivalent. It matches the UVR2D221MHD in capacitance, voltage rating, tolerance, lead spacing, case diameter, and operating temperature range. The height difference of 0.019" (0.50mm) is within typical PCB clearance tolerances. This part carries Active product status and ROHS3 compliance, making it suitable for immediate deployment.

Upgrade Options (Improved Lifetime or Temperature Rating):

UAQ2D221MHD (Nichicon) provides an upgrade path within the same manufacturer family. It maintains identical electrical specifications and form factor while extending the operating temperature range to 105°C and offering Active product status. This is the preferred upgrade for applications requiring extended temperature performance.

EKMG201ELL221MMP1S (Chemi-Con) offers similar electrical performance with extended temperature capability (105°C) but carries Discontinued at DiGi Electronics status, limiting long-term availability.

B43821A2227M000 (EPCOS - TDK Electronics) provides extended lifetime (3000 hours at 85°C versus 2000 hours) with identical voltage and capacitance ratings. This part is Active and ROHS3 compliant, suitable for applications requiring enhanced reliability.

Higher Voltage Alternatives (250 V Rating):

UVK2E221MHD (Nichicon), 250PK220MEFC18X35.5 (Rubycon), and ESMQ251ELL221MMP1S (Chemi-Con) all provide 250 V rated versions with identical 220 µF capacitance. These are suitable for applications where voltage margin is required. All maintain the same form factor and lead spacing.

250PX220MEFC18X35.5 (Rubycon) combines 250 V rating with extended temperature range (105°C) and Active status, making it suitable for demanding thermal environments.

Minor Form Factor Variation:

UVK2D221MHD (Nichicon) has a reduced case diameter (0.630" versus 0.709") while maintaining all other specifications. This part is suitable only if PCB layout permits the smaller diameter.

All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a 250 V rated capacitor in place of the 200 V UVR2D221MHD?

A: Yes. A higher voltage rating is acceptable in applications designed for 200 V operation. The 250 V parts (UVK2E221MHD, 250PK220MEFC18X35.5, ESMQ251ELL221MMP1S, EKMQ251ELL221MMP1S) provide additional voltage margin and are mechanically compatible with identical lead spacing and case diameter.

Q: What is the significance of the "Not For New Designs" status?

A: This designation indicates the UVR2D221MHD has been superseded in Nichicon's active product portfolio. While existing inventory remains available, the manufacturer recommends using newer alternatives for new designs. Active status parts like UAQ2D221MHD, ESMG201ELL221MMP1S, and B43821A2227M000 are preferred for new applications.

Q: Are there mechanical compatibility concerns with the substitute parts?

A: The primary mechanical parameters are lead spacing (0.295" / 7.50mm), case diameter (0.709" / 18.00mm), and height (1.476" / 37.50mm). ESMG201ELL221MMP1S has a height of 1.457" (0.019" shorter), which is within typical PCB clearance tolerances. UVK2D221MHD has a reduced case diameter (0.630") and should only be used if PCB layout permits. All other substitutes maintain identical mechanical specifications.

Q: Which substitute offers the best long-term reliability?

A: B43821A2227M000 (EPCOS - TDK Electronics) provides the longest rated lifetime at 3000 hours at 85°C, compared to 2000 hours for the original part. For extended temperature operation, UAQ2D221MHD, EKMG201ELL221MMP1S, 250PX220MEFC18X35.5, and EKMQ251ELL221MMP1S all support 105°C operation.

Q: Do all substitutes meet current compliance requirements?

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

Q: What is the difference between ripple current ratings at 120 Hz versus 10 kHz?

A: Ripple current capacity varies with frequency. The 120 Hz rating applies to low-frequency AC ripple (typical in power supply applications), while the 10 kHz rating applies to high-frequency switching ripple. Select a substitute based on the actual ripple frequency in your application. The UVR2D221MHD supports 810 mA at 120 Hz and 1.296 A at 10 kHz; ESMG201ELL221MMP1S provides equivalent low-frequency performance (810 mA at 120 Hz).

Q: Can I substitute UVK2D221MHD due to its smaller case diameter?

A: UVK2D221MHD is electrically equivalent but has a reduced case diameter (0.630" versus 0.709"). This part is suitable only if your PCB layout has been verified to accommodate the smaller diameter. Lead spacing and height remain compatible.

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