UPS2W330MHD Equivalent & Substitute Parts

Part Overview

The UPS2W330MHD is a 33 µF, 450 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as obsolete, with a rated lifetime of 3000 hours at 105°C. Due to its obsolete status, direct replacement with active production alternatives is necessary for new designs and ongoing procurement. Substitute parts maintain the core electrical specifications (33 µF capacitance, 450 V rating, ±20% tolerance) while offering improved reliability through extended operational lifetimes and enhanced ripple current handling capabilities.

Key Parameters

Parameter	Value
Capacitance	33 µF
Voltage Rating	450 V
Tolerance	±20%
Lifetime @ 105°C	3000 Hrs
Operating Temperature Range	-25°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.295" (7.50mm)
Diameter	0.709" (18.00mm)
Height	1.476" (37.50mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Mandatory Matching 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)
Package Type: Radial, Can (exact match required)

Mechanical Compatibility Parameters:

Lead Spacing: 0.295" (7.50mm) for direct PCB fit
Diameter: 0.709" (18.00mm) for envelope compatibility
Height: Variation acceptable within physical space constraints

Performance Enhancement Parameters:

Lifetime @ 105°C: Extended lifetimes (5000 Hrs or greater) provide improved reliability
Ripple Current Capability: Higher ripple current ratings indicate superior thermal performance
Operating Temperature Range: Extended lower temperature limits provide broader operational envelope

Substitute parts are categorized as Direct Manufacturer (identical electrical and mechanical specifications), Manufacturer Recommended (active production equivalent with minor dimensional variation), or Similar (same electrical ratings with different mechanical footprint or performance characteristics).

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Operating Temp	Lead Spacing	Diameter	Height	Product Status	RoHS
UPS2W330MHD	Nichicon	UPS	33 µF	450 V	±20%	3000 Hrs	-25°C ~ 105°C	0.295" (7.50mm)	0.709" (18.00mm)	1.476" (37.50mm)	Obsolete	ROHS3
UCS2W330MHD6	Nichicon	UCS	33 µF	450 V	±20%	10000 Hrs	-25°C ~ 105°C	0.295" (7.50mm)	0.709" (18.00mm)	0.846" (21.50mm)	Active	ROHS3
ULD2W330MHD6	Nichicon	ULD	33 µF	450 V	±20%	20000 Hrs	-40°C ~ 105°C	0.295" (7.50mm)	0.709" (18.00mm)	0.866" (22.00mm)	Not For New Designs	ROHS3
UCS2W330MHD	Nichicon	UCS	33 µF	450 V	±20%	10000 Hrs	-25°C ~ 105°C	0.295" (7.50mm)	0.630" (16.00mm)	1.043" (26.50mm)	Active	ROHS3
UCS2W330MND9	Nichicon	UCS	33 µF	450 V	±20%	10000 Hrs	-25°C ~ 105°C	0.197" (5.00mm)	0.394" (10.00mm)	1.654" (42.00mm)	Active	ROHS3
UPT2W330MHD	Nichicon	UPT	33 µF	450 V	±20%	5000 Hrs	-25°C ~ 105°C	0.197" (5.00mm)	0.492" (12.50mm)	1.457" (37.00mm)	Active	ROHS3
UPZ2W330MND9	Nichicon	UPZ	33 µF	450 V	±20%	2000 Hrs	-25°C ~ 105°C	0.197" (5.00mm)	0.394" (10.00mm)	1.654" (42.00mm)	Active	ROHS3
UVZ2W330MHD	Nichicon	UVZ	33 µF	450 V	±20%	2000 Hrs	-25°C ~ 105°C	0.295" (7.50mm)	0.630" (16.00mm)	1.457" (37.00mm)	Not For New Designs	ROHS3
450BXC33MEFC18X20	Rubycon	BXC	33 µF	450 V	±20%	12000 Hrs	-25°C ~ 105°C	0.295" (7.50mm)	0.709" (18.00mm)	0.866" (22.00mm)	Active	ROHS3
450LLE33MEFC18X20	Rubycon	LLE	33 µF	450 V	±20%	20000 Hrs	-25°C ~ 105°C	0.295" (7.50mm)	0.709" (18.00mm)	0.866" (22.00mm)	Active	ROHS3
EEU-EB2W330S	Panasonic Electronic Components	EB-A	33 µF	450 V	±20%	5000 Hrs	-25°C ~ 105°C	0.295" (7.50mm)	0.709" (18.00mm)	1.063" (27.00mm)	Active	ROHS3

Engineering Selection Recommendations

Direct Mechanical Replacement (Identical Footprint):

UCS2W330MHD6 and 450BXC33MEFC18X20 provide direct PCB compatibility with the UPS2W330MHD, maintaining 0.295" (7.50mm) lead spacing and 0.709" (18.00mm) diameter. Both are active production parts with ROHS3 compliance. UCS2W330MHD6 offers 10000-hour lifetime with 980 mA ripple current at 100 kHz. 450BXC33MEFC18X20 (Rubycon) provides 12000-hour lifetime with 780 mA ripple current at 100 kHz. Height reduction from 1.476" to 0.846"-0.866" improves thermal performance and PCB space utilization.

Manufacturer Recommended Alternative (Nichicon):

UCS2W330MHD is the manufacturer-recommended active production equivalent, offering 10000-hour lifetime and 980 mA ripple current capability. Dimensional variation includes reduced diameter (0.630" vs 0.709") and modified height (1.043" vs 1.476"), requiring PCB layout verification for lead spacing compatibility at 0.295" (7.50mm).

Extended Lifetime Option:

450LLE33MEFC18X20 (Rubycon) and ULD2W330MHD6 (Nichicon) both provide 20000-hour operational lifetime at 105°C. Both maintain identical lead spacing (0.295"/7.50mm) and diameter (0.709"/18.00mm) with reduced height (0.866"-0.866" vs 1.476"). ULD2W330MHD6 is classified as "Not For New Designs" despite extended lifetime. 450LLE33MEFC18X20 is active production with REACH Unaffected status.

Alternative Footprint Options:

UCS2W330MND9, UPT2W330MHD, and UPZ2W330MND9 utilize 0.197" (5.00mm) lead spacing, requiring PCB redesign. These alternatives are suitable only when mechanical constraints permit footprint modification. UCS2W330MND9 and UPT2W330MHD are active production parts; UPZ2W330MND9 is active but offers only 2000-hour lifetime.

Compliance Verification:

All substitute parts maintain ROHS3 compliance. 450LLE33MEFC18X20 specifies MSL 1 (Unlimited) moisture sensitivity. ULD2W330MHD6 and UPZ2W330MND9 are REACH Affected; all others are REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can UCS2W330MHD6 replace UPS2W330MHD directly on the PCB?

A: UCS2W330MHD6 maintains identical lead spacing (0.295"/7.50mm) and diameter (0.709"/18.00mm), enabling direct PCB mounting. Height reduction from 1.476" to 0.846" improves thermal clearance. Electrical specifications (33 µF, 450 V, ±20%) are identical. Direct substitution is mechanically and electrically compatible.

Q: What is the difference between UCS2W330MHD and UCS2W330MHD6?

A: Both are Nichicon UCS series with identical electrical ratings (33 µF, 450 V, 10000-hour lifetime). UCS2W330MHD6 has lead spacing 0.295" (7.50mm) and diameter 0.709" (18.00mm) with height 0.846" (21.50mm). UCS2W330MHD has lead spacing 0.295" (7.50mm) but reduced diameter 0.630" (16.00mm) with height 1.043" (26.50mm). Dimensional differences require PCB verification for compatibility.

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

A: Product status reflects manufacturer production roadmap decisions independent of technical performance. ULD2W330MHD6 remains available in inventory (853 pcs) and is functionally equivalent. For new designs, 450LLE33MEFC18X20 (Rubycon, active production, 20000-hour lifetime) is the preferred extended-lifetime alternative.

Q: Are parts with different lead spacing (0.197" vs 0.295") interchangeable?

A: No. Lead spacing determines PCB hole pattern and cannot be changed without PCB redesign. UCS2W330MND9, UPT2W330MHD, and UPZ2W330MND9 use 0.197" (5.00mm) spacing and require new PCB layout. These are suitable only for new designs with modified footprints.

Q: What is the impact of height variation on thermal performance?

A: Reduced height improves convective cooling and reduces thermal resistance. UCS2W330MHD6 at 0.846" height provides superior thermal performance compared to UPS2W330MHD at 1.476" height. This enables higher ripple current handling (980 mA @ 100 kHz vs 232 mA @ 10 kHz) and extended operational lifetime.

Q: Which substitute offers the best reliability for critical applications?

A: 450LLE33MEFC18X20 (Rubycon, 20000-hour lifetime, active production) and ULD2W330MHD6 (Nichicon, 20000-hour lifetime) provide maximum operational reliability. 450LLE33MEFC18X20 is preferred for new designs due to active production status and REACH Unaffected compliance.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance. Moisture sensitivity levels vary: 450LLE33MEFC18X20 specifies MSL 1 (Unlimited); all others are Not Applicable.

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