Nichicon UES1C220MEM 22µF 16V Radial Aluminum Electrolytic Capacitor Equivalent & Substitute Parts

Part Overview

The Nichicon UES1C220MEM is a 22µF, 16V radial aluminum electrolytic capacitor designed for audio applications with a 1000-hour lifetime at 85°C. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing. Substitute parts maintain the core capacitance and tolerance specifications while offering enhanced voltage ratings, extended operating temperature ranges, or improved lifetime characteristics to meet modern reliability requirements.

Key Parameters

Parameter	Value
Capacitance	22 µF
Tolerance	±20%
Voltage - Rated	16 V
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Bi-Polar
Lead Spacing	0.098" (2.50mm)
Size / Dimension	0.248" Dia (6.30mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UES1C220MEM is determined by strict adherence to the following electrical and mechanical parameters:

Core Substitution Criteria:

Capacitance: 22 µF (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Bi-Polar (exact match required)
Lead Spacing: 0.098" (2.50mm) (exact match required)
Size / Dimension: 0.248" Dia (6.30mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can (exact match required)

Allowable Variations for Substitution:

Voltage - Rated: May be equal to or greater than 16V
Operating Temperature Range: May be equal to or extended beyond -40°C ~ 85°C
Lifetime @ Temperature: May be equal to or greater than 1000 Hrs @ 85°C
ESR (Equivalent Series Resistance): May be specified or unspecified
Ripple Current: May be specified or unspecified

All substitute parts listed maintain identical mechanical compatibility and core electrical specifications while offering enhanced performance characteristics within the allowable parameter variations.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage (V)	Lifetime @ Temp.	Operating Temp. Range	Lead Spacing	Size Dia	Height (Max)	Product Status	RoHS Status
UES1C220MEM	Nichicon	22 µF	±20%	16	1000 Hrs @ 85°C	-40°C ~ 85°C	0.098" (2.50mm)	0.248" (6.30mm)	0.472" (12.00mm)	Obsolete	ROHS3 Compliant
UEP1E220MED	Nichicon	22 µF	±20%	25	1000 Hrs @ 105°C	-55°C ~ 105°C	0.098" (2.50mm)	0.248" (6.30mm)	0.492" (12.50mm)	Obsolete	ROHS3 Compliant
UEP1V220MED	Nichicon	22 µF	±20%	35	1000 Hrs @ 105°C	-55°C ~ 105°C	0.098" (2.50mm)	0.248" (6.30mm)	0.492" (12.50mm)	Obsolete	ROHS3 Compliant
UVP1V220MED	Nichicon	22 µF	±20%	35	2000 Hrs @ 85°C	-40°C ~ 85°C	0.098" (2.50mm)	0.248" (6.30mm)	0.492" (12.50mm)	Obsolete	ROHS3 Compliant
226BPS035M	Cornell Dubilier / Illinois Capacitor	22 µF	±20%	35	2000 Hrs @ 85°C	-40°C ~ 85°C	0.098" (2.50mm)	0.248" (6.30mm)	0.512" (13.00mm)	Active	ROHS3 Compliant
25NXA22MEFC6.3X11	Rubycon	22 µF	±20%	25	1000 Hrs @ 105°C	-55°C ~ 105°C	0.098" (2.50mm)	0.248" (6.30mm)	0.492" (12.50mm)	Active	ROHS3 Compliant
50NXA22MEFC6.3X11	Rubycon	22 µF	±20%	50	1000 Hrs @ 105°C	-55°C ~ 105°C	0.098" (2.50mm)	0.248" (6.30mm)	0.492" (12.50mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Active Status Preference: The 226BPS035M (Cornell Dubilier / Illinois Capacitor), 25NXA22MEFC6.3X11 (Rubycon), and 50NXA22MEFC6.3X11 (Rubycon) are classified as active products and are recommended for new designs and ongoing production support. These parts ensure long-term component availability and supply chain stability.

Compliance Alignment: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original UES1C220MEM.

Voltage Rating Selection: For applications operating at or below 16V, the 25V-rated substitutes (UEP1E220MED, 25NXA22MEFC6.3X11) provide adequate margin. For applications requiring enhanced voltage headroom or operating in higher voltage environments, the 35V-rated options (UEP1V220MED, UVP1V220MED, 226BPS035M) or 50V-rated option (50NXA22MEFC6.3X11) are appropriate.

Lifetime and Temperature Considerations: The UVP1V220MED and 226BPS035M offer extended 2000-hour lifetimes at 85°C, compared to the original 1000-hour specification, providing improved reliability for long-term applications. The UEP1E220MED, UEP1V220MED, 25NXA22MEFC6.3X11, and 50NXA22MEFC6.3X11 support extended operating temperature ranges (-55°C ~ 105°C) versus the original -40°C ~ 85°C range.

Physical Compatibility: The 226BPS035M exhibits a maximum seated height of 0.512" (13.00mm), compared to 0.472" (12.00mm) for the original part. Verify PCB layout clearance before selection. All other substitutes maintain the original height specification of 0.492" (12.50mm) or less.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a substitute? A: Yes. A capacitor with a voltage rating equal to or greater than 16V is a valid substitute. Higher voltage ratings provide additional safety margin and do not degrade circuit performance in applications operating at or below the original 16V specification.

Q: What is the difference between the Nichicon UEP and UVP series substitutes? A: Both are Nichicon products with identical 22µF capacitance and ±20% tolerance. The UEP series (UEP1E220MED at 25V, UEP1V220MED at 35V) offers 1000-hour lifetime at 105°C with extended temperature range (-55°C ~ 105°C). The UVP series (UVP1V220MED at 35V) offers 2000-hour lifetime at 85°C with the original temperature range (-40°C ~ 85°C). Select based on your application's temperature and lifetime requirements.

Q: Are the Rubycon NXA series parts compatible with the original UES1C220MEM? A: Yes. The 25NXA22MEFC6.3X11 (25V) and 50NXA22MEFC6.3X11 (50V) maintain all mechanical and core electrical specifications. Both are active products with extended operating temperature ranges (-55°C ~ 105°C) and 1000-hour lifetimes at 105°C.

Q: What is the significance of the 226BPS035M being an active product? A: Active product status indicates ongoing manufacturing and availability. The 226BPS035M from Cornell Dubilier / Illinois Capacitor is currently in production, ensuring reliable long-term sourcing for new designs and production runs, unlike the obsolete UES1C220MEM.

Q: Does the slightly taller 226BPS035M (0.512" vs. 0.472") affect compatibility? A: The 226BPS035M has a maximum seated height of 0.512" (13.00mm), which is 0.040" (0.50mm) taller than the original. Verify your PCB layout and component clearance specifications before selection. If vertical space is constrained, select substitutes with 0.492" (12.50mm) or lower heights.

Q: Can I mix different substitute parts in the same circuit? A: Yes, provided all parts meet the circuit's voltage, capacitance, tolerance, and temperature requirements. However, for consistency and simplified inventory management, using a single substitute part number across a design is recommended.

Q: What does ±20% tolerance mean for substitution? A: All listed substitutes maintain ±20% tolerance, matching the original specification. This tolerance applies to the actual capacitance value at room temperature and specified voltage. Capacitance variation within this range does not affect substitution validity.

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