UST0J221MDD Equivalent & Substitute Parts

Part Overview

The UST0J221MDD is a 220 µF, 6.3 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 1000 hours at 105°C and is designed for general-purpose applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Substitute parts must maintain the same capacitance, voltage rating, and polarization while meeting or exceeding the electrical performance characteristics of the original component.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage - Rated	6.3 V
Tolerance	±20%
Polarization	Polar
Lifetime @ Temp.	1000 Hrs @ 105°C
Operating Temperature	-55°C ~ 105°C
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UST0J221MDD is determined by the following critical parameters:

Capacitance: 220 µF (exact match required)
Voltage Rating: 6.3 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Operating Temperature Range: -55°C ~ 105°C (exact match required)
Mounting Type: Through Hole (exact match required for direct PCB compatibility)
Package Type: Radial, Can (exact match required for form factor compatibility)

Substitute parts are grouped into two categories:

Category 1: Direct Through-Hole Radial Substitutes — Parts with identical mounting type and package configuration, suitable for direct PCB replacement without layout modifications.

Category 2: Surface Mount Alternative — The UWT0J221MCL1GB offers equivalent electrical performance in SMD format, requiring PCB redesign for implementation.

Parts with different voltage ratings (such as UVZ1E221MPD at 25 V) are listed for reference but are not direct substitutes due to voltage mismatch.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Mounting Type	Package	Product Status	RoHS Status
UST0J221MDD	Nichicon	220 µF	6.3 V	±20%	1000 Hrs	Through Hole	Radial, Can	Obsolete	ROHS3 Compliant
UPJ0J221MED	Nichicon	220 µF	6.3 V	±20%	2000 Hrs	Through Hole	Radial, Can	Obsolete	ROHS3 Compliant
UPW0J221MED	Nichicon	220 µF	6.3 V	±20%	2000 Hrs	Through Hole	Radial, Can	Obsolete	ROHS3 Compliant
UWT0J221MCL1GB	Nichicon	220 µF	6.3 V	±20%	1000 Hrs	Surface Mount	Radial, Can - SMD	Active	ROHS3 Compliant
ECA-0JHG221	Panasonic Electronic Components	220 µF	6.3 V	±20%	1000 Hrs	Through Hole	Radial, Can	Active	ROHS3 Compliant
ECA-0JHG221B	Panasonic Electronic Components	220 µF	6.3 V	±20%	1000 Hrs	Through Hole	Radial, Can	Active	ROHS3 Compliant
ECA-0JHG221I	Panasonic Electronic Components	220 µF	6.3 V	±20%	1000 Hrs	Through Hole	Radial, Can	Active	ROHS3 Compliant
EEU-FC0J221	Panasonic Electronic Components	220 µF	6.3 V	±20%	1000 Hrs	Through Hole	Radial, Can	Active	ROHS3 Compliant
EEU-FC0J221B	Panasonic Electronic Components	220 µF	6.3 V	±20%	1000 Hrs	Through Hole	Radial, Can	Active	ROHS3 Compliant
SEK221M6R3ST	Cornell Dubilier Electronics (CDE)	220 µF	6.3 V	±20%	2000 Hrs	Through Hole	Radial, Can	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct PCB Replacement (Through-Hole Radial)

The Panasonic ECA-0JHG221, ECA-0JHG221B, ECA-0JHG221I, EEU-FC0J221, and EEU-FC0J221B are active production parts suitable for direct substitution. These components maintain identical electrical specifications and form factors. The Panasonic ECA series parts carry AEC-Q200 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components.

The Nichicon UPJ0J221MED and UPW0J221MED offer extended lifetime ratings (2000 hours at 105°C) compared to the original UST0J221MDD (1000 hours), providing enhanced reliability for long-term applications. The Cornell Dubilier SEK221M6R3ST also provides 2000-hour lifetime rating and is currently in active production.

For Surface Mount Applications

The UWT0J221MCL1GB provides equivalent electrical performance in SMD format with active product status. This part requires PCB layout redesign and is suitable only for new designs or board revisions.

Compliance Considerations

All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. Parts with AEC-Q200 ratings are suitable for automotive applications where component qualification is required.

Frequently Asked Questions (FAQ)

Q: Can I use a 25 V rated capacitor in place of the 6.3 V UST0J221MDD?

A: No. The voltage rating must match the circuit design requirements. Using a higher voltage rating introduces unnecessary size and cost penalties. The UVZ1E221MPD (25 V) is not a substitute for 6.3 V applications.

Q: What is the difference between the Nichicon UPJ0J221MED and UPW0J221MED?

A: Both parts share identical electrical specifications (220 µF, 6.3 V, ±20%, 2000 Hrs @ 105°C) and mounting type. The primary differences are in physical dimensions and ripple current handling at different frequencies. Both are suitable substitutes for the UST0J221MDD.

Q: Are the Panasonic ECA-0JHG221 variants interchangeable?

A: The ECA-0JHG221, ECA-0JHG221B, and ECA-0JHG221I share identical electrical specifications. The variants differ in lead spacing (2.00 mm, 5.00 mm, and 2.50 mm respectively) and packaging format (Bulk, Cut Tape, Cut Tape). Selection depends on PCB layout requirements and procurement packaging needs.

Q: Can I use the UWT0J221MCL1GB SMD part as a direct replacement?

A: No. The UWT0J221MCL1GB is a surface mount component requiring different PCB footprint and assembly process. Direct replacement is not possible without PCB redesign. This part is suitable only for new designs or board revisions.

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

A: The Nichicon UPJ0J221MED, UPW0J221MED, and Cornell Dubilier SEK221M6R3ST all provide 2000-hour lifetime ratings at 105°C, compared to the original 1000-hour rating. These parts are suitable for applications requiring extended operational life.

Q: Are all substitute parts automotive-qualified?

A: The Panasonic ECA-0JHG221B, ECA-0JHG221I, EEU-FC0J221, and EEU-FC0J221B carry AEC-Q200 automotive qualification. The Nichicon and Cornell Dubilier parts do not list automotive qualification. Selection depends on application requirements.

Q: What is the lead spacing consideration for PCB compatibility?

A: Lead spacing varies among substitutes (2.00 mm, 2.50 mm, 4.60 mm, and 5.00 mm). The original UST0J221MDD has 4.60 mm lead spacing. Verify PCB hole pattern compatibility before selecting a substitute with different lead spacing.

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