Equivalent & Substitute Parts for UCS2W330MHD

Part Overview

The Nichicon UCS2W330MHD is a 33 µF, 450 V aluminum electrolytic capacitor in radial, can package configuration. This component is rated for 10,000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is currently active in production and ROHS3 compliant.

Equivalent and substitute parts are necessary when addressing inventory constraints, extended lead times, or when design requirements call for enhanced performance characteristics such as increased lifetime ratings or expanded operating temperature ranges.

Key Parameters

Parameter	Value
Capacitance	33 µF
Voltage Rating	450 V
Tolerance	±20%
Lifetime @ Temperature	10,000 Hrs @ 105°C
Operating Temperature Range	-25°C to 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.295" (7.50 mm)

Substitute Part Grouping Explanation

Substitution eligibility for the UCS2W330MHD is determined by the following mandatory parameters:

Capacitance: 33 µF (exact match required)
Voltage Rating: 450 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Mounting Type: Through Hole (exact match required)
Lead Spacing: 0.295" (7.50 mm) (exact match required)
Package Type: Radial, Can (exact match required)

All identified substitute parts meet these core electrical and mechanical parameters. Variations in physical dimensions (diameter and height), lifetime ratings, operating temperature ranges, and ripple current specifications are permissible within the substitution framework, provided the mandatory parameters remain unchanged.

Parameter Comparison

Parameter	UCS2W330MHD	UCS2W330MHD6	ULD2W330MHD6	EEU-EE2W330S	450LLE33MEFC18X20
Manufacturer	Nichicon	Nichicon	Nichicon	Panasonic Electronic Components	Rubycon
Series	UCS	UCS	ULD	EE-A	LLE
Capacitance	33 µF	33 µF	33 µF	33 µF	33 µF
Voltage Rating	450 V	450 V	450 V	450 V	450 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Lifetime @ 105°C	10,000 Hrs	10,000 Hrs	20,000 Hrs	10,000 Hrs	20,000 Hrs
Operating Temperature	-25°C to 105°C	-25°C to 105°C	-40°C to 105°C	-25°C to 105°C	-25°C to 105°C
Ripple Current @ 120 Hz	490 mA	490 mA	312 mA	350 mA	312 mA
Ripple Current @ 100 kHz	980 mA	980 mA	561.6 mA	1 A	780 mA
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Diameter	0.630" (16.00 mm)	0.709" (18.00 mm)	0.709" (18.00 mm)	0.709" (18.00 mm)	0.709" (18.00 mm)
Height (Max)	1.043" (26.50 mm)	0.846" (21.50 mm)	0.866" (22.00 mm)	0.866" (22.00 mm)	0.866" (22.00 mm)
Product Status	Active	Active	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Affected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Direct Substitutes (Same Lifetime Rating)

UCS2W330MHD6 (Nichicon) and EEU-EE2W330S (Panasonic Electronic Components) are direct substitutes with identical 10,000-hour lifetime ratings at 105°C. Both parts are active in production and ROHS3 compliant. UCS2W330MHD6 maintains the same ripple current specifications as the primary part. EEU-EE2W330S offers higher ripple current capacity at 100 kHz (1 A versus 980 mA). Physical dimensions differ slightly; both substitute parts feature reduced height compared to the primary part.

Enhanced Lifetime Alternatives

ULD2W330MHD6 (Nichicon) and 450LLE33MEFC18X20 (Rubycon) provide doubled lifetime ratings of 20,000 hours at 105°C. ULD2W330MHD6 carries a "Not For New Designs" status and is subject to REACH regulations. 450LLE33MEFC18X20 is active in production, ROHS3 compliant, and REACH unaffected. Both parts feature reduced ripple current specifications compared to the primary part. ULD2W330MHD6 supports an extended operating temperature range of -40°C to 105°C.

Compliance Considerations

All substitute parts maintain ROHS3 compliance. ULD2W330MHD6 is subject to REACH regulations, whereas the primary part and all other substitutes are REACH unaffected. For applications requiring REACH compliance without restrictions, select from UCS2W330MHD6, EEU-EE2W330S, or 450LLE33MEFC18X20.

Frequently Asked Questions (FAQ)

Q: Can UCS2W330MHD6 be used as a direct replacement for UCS2W330MHD?

A: Yes. UCS2W330MHD6 meets all mandatory substitution parameters: 33 µF capacitance, 450 V voltage rating, ±20% tolerance, polar polarization, through-hole mounting, 0.295" lead spacing, and radial can package. Both parts share identical electrical specifications including ripple current ratings. Physical dimensions differ; UCS2W330MHD6 is smaller in both diameter and height.

Q: What is the difference between the 10,000-hour and 20,000-hour lifetime parts?

A: Lifetime rating indicates the expected operational duration at maximum rated temperature (105°C). ULD2W330MHD6 and 450LLE33MEFC18X20 are rated for 20,000 hours, double the 10,000-hour rating of UCS2W330MHD, UCS2W330MHD6, and EEU-EE2W330S. Extended lifetime parts typically exhibit lower ripple current specifications.

Q: Are there physical space constraints when substituting UCS2W330MHD with smaller alternatives?

A: UCS2W330MHD measures 0.630" diameter by 1.043" height. All substitute parts feature 0.709" diameter (larger) but reduced height ranging from 0.846" to 0.866". Verify PCB layout compatibility, particularly regarding lead spacing and component clearance, before substitution.

Q: Which substitute part is recommended for new designs?

A: For new designs, select from parts with "Active" product status: UCS2W330MHD6, EEU-EE2W330S, or 450LLE33MEFC18X20. ULD2W330MHD6 carries "Not For New Designs" status and should not be selected for new applications.

Q: Does ripple current specification affect substitution eligibility?

A: Ripple current is not a mandatory substitution parameter. Variations in ripple current capacity are permissible. However, verify that the selected substitute meets or exceeds the ripple current requirements of the target application to ensure adequate thermal performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts are ROHS3 compliant. ULD2W330MHD6 is additionally subject to REACH regulations; all other parts are REACH unaffected.

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