UPW2W330MHD Equivalent & Substitute Parts

Part Overview

The Nichicon UPW2W330MHD is a 33 µF, 450 V aluminum electrolytic capacitor in radial, can package configuration. This component is classified as obsolete, indicating it is no longer in active production. The UPW series provides 8000 hours of operational life at 105°C and is designed for general-purpose applications requiring stable capacitance and voltage performance in through-hole mounting configurations.

Due to its obsolete status, identifying functionally equivalent substitute parts is essential for design continuity, board redesigns, and long-term component sourcing strategies. Substitute parts must maintain electrical compatibility while potentially offering improved reliability characteristics or extended operational lifetimes.

Key Parameters

Parameter	Value	Unit
Capacitance	33	µF
Tolerance	±20%	—
Voltage - Rated	450	V
Lifetime @ 105°C	8000	Hrs
Operating Temperature Range	-25°C to 105°C	—
Lead Spacing	0.295" (7.50mm)	—
Case Diameter	0.709" (18.00mm)	—
Height - Seated (Max)	1.398" (35.50mm)	—
Mounting Type	Through Hole	—
Package / Case	Radial, Can	—
Polarization	Polar	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the UPW2W330MHD is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

Capacitance: 33 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 450 V (exact match or higher required)
Polarization: Polar (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)

Compatible Variation Parameters:

Lifetime @ 105°C: May exceed 8000 hours (improvement acceptable)
Operating Temperature Range: May extend beyond -25°C to 105°C (improvement acceptable)
Lead Spacing: 0.295" (7.50mm) preferred; alternative spacing acceptable if PCB layout permits
Case Diameter: 18.00mm preferred; alternative diameters acceptable if physical space permits
Height: May vary if board clearance allows
Ripple Current Ratings: May exceed original specifications (improvement acceptable)

Compliance Requirements:

RoHS3 Compliance: Required
REACH Status: Unaffected or Affected status acceptable

Substitute parts are grouped into three categories: Direct Manufacturer Equivalents (same manufacturer, improved specifications), Manufacturer Recommended Alternatives (manufacturer-endorsed substitutes), and Similar Parts (functionally compatible alternatives from same or different manufacturers).

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Lifetime @ 105°C (Hrs)	Lead Spacing (mm)	Case Dia (mm)	Height (mm)	Product Status	RoHS3
UPW2W330MHD	Nichicon	UPW	33	450	8000	7.50	18.00	35.50	Obsolete	Compliant
UCS2W330MHD6	Nichicon	UCS	33	450	10000	7.50	18.00	21.50	Active	Compliant
ULD2W330MHD6	Nichicon	ULD	33	450	20000	7.50	18.00	22.00	Not For New Designs	Compliant
UCS2W330MHD	Nichicon	UCS	33	450	10000	7.50	16.00	26.50	Active	Compliant
UCS2W330MND9	Nichicon	UCS	33	450	10000	5.00	10.00	42.00	Active	Compliant
UPS2W330MHD	Nichicon	UPS	33	450	3000	7.50	18.00	37.50	Obsolete	Compliant
UPT2W330MHD	Nichicon	UPT	33	450	5000	5.00	12.50	37.00	Active	Compliant
UPZ2W330MND9	Nichicon	UPZ	33	450	2000	5.00	10.00	42.00	Active	Compliant
UVZ2W330MHD	Nichicon	UVZ	33	450	2000	7.50	16.00	37.00	Not For New Designs	Compliant
450BXC33MEFC18X20	Rubycon	BXC	33	450	12000	7.50	18.00	22.00	Active	Compliant
450LLE33MEFC18X20	Rubycon	LLE	33	450	20000	7.50	18.00	22.00	Active	Compliant

Engineering Selection Recommendations

Direct Manufacturer Equivalents (Nichicon UCS2W330MHD6 and ULD2W330MHD6):

UCS2W330MHD6 is the primary direct equivalent. It maintains identical capacitance, voltage rating, and lead spacing while offering extended lifetime (10000 hours versus 8000 hours) and reduced physical height (21.50mm versus 35.50mm). Active product status ensures long-term availability. This part is suitable for direct substitution in applications where reduced height accommodates PCB layout constraints.

ULD2W330MHD6 provides the longest operational lifetime (20000 hours) among Nichicon equivalents but carries "Not For New Designs" status, limiting its suitability for new product development despite superior reliability characteristics.

Manufacturer Recommended Alternative (Nichicon UCS2W330MHD):

UCS2W330MHD is Nichicon's recommended substitute, offering active product status and 10000-hour lifetime. Physical dimensions differ slightly (16.00mm diameter, 26.50mm height), requiring PCB layout verification before implementation.

Similar Parts with Dimensional Variations:

UCS2W330MND9, UPT2W330MHD, and UPZ2W330MND9 employ alternative lead spacing (5.00mm) and reduced case diameters (10.00mm to 12.50mm), resulting in significantly different physical footprints. These parts are suitable only when PCB layout explicitly accommodates their dimensional specifications. UPZ2W330MND9 offers the lowest lifetime (2000 hours) and is not recommended for applications requiring the original 8000-hour specification.

Cross-Manufacturer Alternatives (Rubycon):

450BXC33MEFC18X20 and 450LLE33MEFC18X20 maintain identical lead spacing and case diameter to the original part, enabling direct physical substitution. Both are active products with RoHS3 compliance. 450LLE33MEFC18X20 provides 20000-hour lifetime, the highest among all listed substitutes.

Selection Priority:

For applications requiring direct physical and electrical compatibility with minimal redesign: UCS2W330MHD6 (Nichicon, active status, improved lifetime, reduced height).

For applications permitting dimensional variation: 450LLE33MEFC18X20 (Rubycon, active status, maximum lifetime, identical lead spacing and case diameter).

For new designs: Avoid ULD2W330MHD6, UPS2W330MHD, and UVZ2W330MHD due to "Not For New Designs" or "Obsolete" status.

Frequently Asked Questions (FAQ)

Q: Can UCS2W330MHD6 replace UPW2W330MHD directly on the PCB?

A: UCS2W330MHD6 maintains identical lead spacing (7.50mm) and case diameter (18.00mm), enabling direct physical substitution. However, the reduced height (21.50mm versus 35.50mm) must be verified against PCB clearance requirements and component placement constraints. Electrical specifications are fully compatible.

Q: What is the difference between UCS2W330MHD and UCS2W330MHD6?

A: Both parts share identical electrical specifications (33 µF, 450 V, 10000-hour lifetime, active status). The primary difference is physical height: UCS2W330MHD measures 26.50mm, while UCS2W330MHD6 measures 21.50mm. Case diameter also differs (16.00mm versus 18.00mm). Selection depends on available PCB space and lead spacing requirements.

Q: Why is ULD2W330MHD6 marked "Not For New Designs" despite superior 20000-hour lifetime?

A: "Not For New Designs" status indicates the manufacturer has discontinued active promotion of this part for new product development, though existing inventory remains available. This classification typically reflects manufacturer strategic decisions regarding product line consolidation. For new designs, UCS2W330MHD6 or cross-manufacturer alternatives such as 450LLE33MEFC18X20 are preferred.

Q: Are Rubycon 450BXC33MEFC18X20 and 450LLE33MEFC18X20 fully compatible with the original Nichicon part?

A: Both Rubycon parts maintain identical capacitance (33 µF), voltage rating (450 V), lead spacing (7.50mm), and case diameter (18.00mm). Physical substitution is direct. Electrical performance is equivalent, with both parts offering active product status and RoHS3 compliance. 450LLE33MEFC18X20 provides extended lifetime (20000 hours).

Q: What happens if I use a substitute part with different lead spacing?

A: Parts with alternative lead spacing (5.00mm instead of 7.50mm) require PCB redesign to accommodate the different hole pattern. Direct physical substitution is not possible without modifying the circuit board. Lead spacing is a critical mechanical parameter that cannot be overlooked during component selection.

Q: Which substitute offers the best balance of availability, reliability, and compatibility?

A: UCS2W330MHD6 provides optimal balance: active product status ensures long-term availability, 10000-hour lifetime exceeds the original specification, and identical lead spacing with reduced height accommodates most PCB layouts. For applications requiring maximum operational lifetime without lead spacing constraints, 450LLE33MEFC18X20 is the superior choice.

Q: Are all listed substitutes RoHS3 compliant?

A: All substitute parts listed carry RoHS3 compliance certification. REACH status varies (Unaffected or Affected), but this does not affect component functionality or compliance with standard industrial regulations.

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