UHD1E221MPD Equivalent & Substitute Parts

Part Overview

The UHD1E221MPD is a 220 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Finding equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and access components with improved performance characteristics such as extended lifetime ratings or enhanced ripple current handling.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage Rating	25 V
Tolerance	±20%
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)
Operating Temperature Range	-40°C to 105°C
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UHD1E221MPD is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Capacitance: 220 µF (exact match required)
Voltage Rating: 25 V minimum (higher voltage ratings are acceptable as upgrades)
Tolerance: ±20% (standard tolerance maintained)
Package: Radial, Can configuration
Lead Spacing: 0.138" (4.60 mm)
Case Diameter: 0.315" (8.00 mm)
Mounting: Through Hole
Operating Temperature: -40°C to 105°C minimum range
Polarization: Polar

Substitution Categories:

Similar Substitutes (Same Voltage, Same Capacitance): Parts maintaining 25 V rating with identical 220 µF capacitance but from different manufacturers or series within Nichicon. These provide direct functional equivalence with potential improvements in lifetime or ripple current performance.

Upgrade Substitutes (Higher Voltage Rating): Parts rated at 35 V or higher with 220 µF capacitance. These provide enhanced voltage margin and are electrically compatible in 25 V applications while offering improved reliability headroom.

Direct Substitutes (Different Manufacturer): Parts from Panasonic, Cornell Dubilier, and Rubycon meeting identical electrical specifications and mechanical dimensions, enabling cross-manufacturer sourcing.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ 105°C	Impedance	Ripple Current @ 120 Hz	Ripple Current @ 100 kHz	Case Diameter	Height	Product Status
UHD1E221MPD	Nichicon	220 µF	25 V	3000 Hrs	72 mOhms	532 mA	760 mA	0.315" (8.00 mm)	0.512" (13.00 mm)	Not For New Designs
UHV1E221MPD	Nichicon	220 µF	25 V	6000 Hrs	59 mOhms	405 mA	810 mA	0.315" (8.00 mm)	0.512" (13.00 mm)	Not For New Designs
UHE1E221MPD	Nichicon	220 µF	25 V	7000 Hrs	130 mOhms	448 mA	—	0.315" (8.00 mm)	0.453" (11.50 mm)	Not For New Designs
UTT1E221MPD	Nichicon	220 µF	25 V	5000 Hrs	400 mOhms	178.8 mA	298 mA	0.315" (8.00 mm)	0.453" (11.50 mm)	Obsolete
EEU-FR1E221	Panasonic	220 µF	25 V	6000 Hrs	56 mOhms	665 mA	950 mA	0.315" (8.00 mm)	0.512" (13.00 mm)	Active
227KBM025M	Cornell Dubilier	220 µF	25 V	7000 Hrs	130 mOhms	320 mA	640 mA	0.315" (8.00 mm)	0.512" (13.00 mm)	Active
227KXM025M	Cornell Dubilier	220 µF	25 V	3000 Hrs	220 mOhms	380 mA	760 mA	0.315" (8.00 mm)	0.512" (13.00 mm)	Active
25YXF220MEFC8X11.5	Rubycon	220 µF	25 V	7000 Hrs	250 mOhms	280 mA	400 mA	0.315" (8.00 mm)	0.512" (13.00 mm)	Not For New Designs
25YXG220MEFC8X11.5	Rubycon	220 µF	25 V	4000 Hrs	130 mOhms	320 mA	640 mA	0.315" (8.00 mm)	0.512" (13.00 mm)	Not For New Designs
35YXJ220M8X11.5	Rubycon	220 µF	35 V	7000 Hrs	130 mOhms	448 mA	—	0.315" (8.00 mm)	0.512" (13.00 mm)	Active
UHV1V221MPD	Nichicon	220 µF	35 V	6000 Hrs	59 mOhms	495 mA	990 mA	0.315" (8.00 mm)	0.512" (13.00 mm)	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (Same Voltage, Same Series): UHV1E221MPD is the primary equivalent within Nichicon's product line, offering identical 25 V rating with improved lifetime (6000 Hrs vs. 3000 Hrs) and lower impedance (59 mOhms vs. 72 mOhms). Both components are ROHS3 compliant and REACH affected.

For Active Product Status: EEU-FR1E221 (Panasonic, Active status) and 227KBM025M (Cornell Dubilier, Active status) provide current production alternatives with 25 V rating, 220 µF capacitance, and extended lifetime ratings. Both maintain identical mechanical dimensions and through-hole mounting configuration. EEU-FR1E221 offers superior ripple current performance (665 mA @ 120 Hz, 950 mA @ 100 kHz).

For Voltage Upgrade Applications: UHV1V221MPD (35 V, Nichicon) and 35YXJ220M8X11.5 (35 V, Rubycon, Active status) provide higher voltage margin while maintaining 220 µF capacitance and identical package dimensions. These are suitable for applications requiring enhanced voltage headroom. 35YXJ220M8X11.5 is currently in active production.

For Extended Lifetime Requirements: UHE1E221MPD (7000 Hrs @ 105°C, Nichicon) and 25YXF220MEFC8X11.5 (7000 Hrs @ 105°C, Rubycon) provide maximum lifetime ratings at 25 V. UHE1E221MPD has slightly reduced height (0.453" vs. 0.512"), which may affect board layout compatibility.

Compliance Considerations: All listed substitutes maintain ROHS3 compliance. EEU-FR1E221 and 35YXJ220M8X11.5 are REACH Unaffected, while most Nichicon and Rubycon parts are REACH Affected. Verify compliance requirements for your specific application.

Frequently Asked Questions (FAQ)

Q: Can I use a 35 V rated capacitor in place of a 25 V capacitor? A: Yes. Higher voltage-rated capacitors are electrically compatible in lower voltage applications. UHV1V221MPD (35 V) and 35YXJ220M8X11.5 (35 V) can directly replace UHD1E221MPD (25 V) while providing additional voltage safety margin. Mechanical dimensions remain identical.

Q: What is the difference between "Similar" and "Upgrade" substitutes? A: Similar substitutes maintain the same 25 V voltage rating as the original part. Upgrade substitutes feature either higher voltage ratings (35 V) or improved performance characteristics such as extended lifetime or lower impedance, while maintaining 220 µF capacitance and identical package dimensions.

Q: Does the height difference between 0.512" and 0.453" affect compatibility? A: Height differences may impact PCB layout and clearance. UHE1E221MPD and UTT1E221MPD are 0.453" tall versus the standard 0.512" height. Verify board-level clearance before substitution. Most alternatives maintain the 0.512" standard height.

Q: Why are some parts listed as "Not For New Designs"? A: This designation indicates the manufacturer has superseded the product line. While these parts remain available and functional, active production alternatives such as EEU-FR1E221 (Panasonic) and 35YXJ220M8X11.5 (Rubycon) are recommended for new designs to ensure long-term supply availability.

Q: What does impedance (mOhms) indicate for capacitor selection? A: Impedance reflects the capacitor's resistance to AC current flow. Lower impedance values (56–72 mOhms) indicate better high-frequency performance and lower heat generation. EEU-FR1E221 (56 mOhms) and UHV1E221MPD (59 mOhms) offer superior impedance compared to UHD1E221MPD (72 mOhms).

Q: Are all substitutes mechanically interchangeable? A: Yes, all listed substitutes maintain identical lead spacing (0.138" / 4.60 mm), case diameter (0.315" / 8.00 mm), and through-hole mounting configuration. Height variations (0.453" vs. 0.512") require PCB clearance verification but do not affect electrical interchangeability.

Q: Which substitute offers the best overall performance? A: EEU-FR1E221 (Panasonic, Active status) combines superior ripple current ratings (665 mA @ 120 Hz, 950 mA @ 100 kHz), low impedance (56 mOhms), extended lifetime (6000 Hrs @ 105°C), and current production status. For voltage-upgraded applications, 35YXJ220M8X11.5 (Rubycon, Active status, 35 V) provides equivalent performance with higher voltage rating.

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