Nichicon UVZ1C331MPH 330µF 16V Radial Aluminum Electrolytic Capacitor Equivalent & Substitute Parts

Part Overview

The Nichicon UVZ1C331MPH is a 330µF, 16V radial aluminum electrolytic capacitor rated for 1000 hours at 105°C. This part is classified as obsolete and no longer recommended for new designs. Finding equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and meet current manufacturing compliance standards including RoHS3 certification.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Lifetime @ 105°C	1000 Hrs
Operating Temperature Range	-55°C to 105°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.138" (4.60mm)
Diameter	0.315" (8.00mm)
Height (Seated Max)	0.512" (13.00mm)
Mounting Type	Through Hole
RoHS Status	Non-compliant

Substitute Part Grouping Explanation

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

Critical Parameters (Must Match):

Capacitance: 330 µF
Voltage Rating: 16 V or higher
Tolerance: ±20%
Package Type: Radial, Can
Lead Spacing: 0.138" (4.60mm)
Physical Dimensions: 0.315" Dia × 0.512" Height (Seated Max)
Mounting Type: Through Hole
Polarization: Polar

Flexible Parameters (May Vary):

Lifetime @ 105°C: 1000 Hrs or greater
Operating Temperature Range: Must encompass -55°C to 105°C
Ripple Current: May vary based on application requirements
ESR/Impedance: May vary

Substitute parts are grouped into two categories:

Direct Substitutes (Same Voltage Rating - 16V): Parts with identical 16V rating and matching physical footprint, suitable for direct PCB replacement without circuit modification.

Upgrade Substitutes (Higher Voltage Rating - 25V): Parts rated at 25V with identical physical footprint. These provide enhanced voltage margin and are electrically compatible in 16V circuits. Upgrade substitutes may also feature improved lifetime ratings (2000 Hrs or 3000 Hrs @ 105°C) and enhanced compliance certifications.

Cross-Manufacturer Substitutes: Parts from alternative manufacturers (Cornell Dubilier, SURGE, Rubycon) meeting identical electrical and mechanical specifications.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ 105°C	Product Status	RoHS Status	Ripple Current @ 120Hz	Ripple Current @ 10kHz/100kHz
UVZ1C331MPH	Nichicon	330 µF	16 V	1000 Hrs	Obsolete	Non-compliant	265 mA	397.5 mA @ 10kHz
UPS1C331MPD	Nichicon	330 µF	16 V	2000 Hrs	Not For New Designs	ROHS3 Compliant	291.1 mA	410 mA @ 100kHz
UVZ1C331MPD	Nichicon	330 µF	16 V	1000 Hrs	Not For New Designs	ROHS3 Compliant	265 mA	397.5 mA @ 10kHz
UPA1C331MPD	Nichicon	330 µF	16 V	3000 Hrs	Active	ROHS3 Compliant	409.5 mA	Not specified
337KXM016M	Cornell Dubilier	330 µF	16 V	3000 Hrs	Active	ROHS3 Compliant	380 mA	760 mA @ 100kHz
RXK331M1CBK-0811S	SURGE	330 µF	16 V	3000 Hrs	Active	ROHS3 Compliant	315 mA	450 mA @ 100kHz
UKA1C331MPD	Nichicon	330 µF	16 V	2000 Hrs	Not For New Designs	ROHS3 Compliant	265 mA	397.5 mA @ 10kHz
UKA1E331MPD	Nichicon	330 µF	25 V	2000 Hrs	Not For New Designs	ROHS3 Compliant	290 mA	435 mA @ 10kHz
UPA1E331MPD	Nichicon	330 µF	25 V	3000 Hrs	Active	ROHS3 Compliant	409.5 mA	Not specified
UVY1E331MPD	Nichicon	330 µF	25 V	1000 Hrs	Not For New Designs	ROHS3 Compliant	275 mA	412.5 mA @ 10kHz
25PX330MEFC8X11.5	Rubycon	330 µF	25 V	1000 Hrs	Active	ROHS3 Compliant	335 mA	Not specified

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Characteristics):

UVZ1C331MPD is the primary direct substitute. It maintains identical electrical performance (330µF, 16V, 1000 Hrs @ 105°C) and physical footprint while providing ROHS3 compliance. This part is suitable for applications requiring no design modification.

For Enhanced Reliability (Improved Lifetime):

UPA1C331MPD is recommended for applications requiring extended operational life. This active-status part provides 3000 hours @ 105°C (3x the original specification) with ROHS3 compliance and identical physical dimensions. The increased ripple current capability (409.5 mA @ 120Hz) offers additional design margin.

For Cross-Manufacturer Alternatives:

337KXM016M (Cornell Dubilier) and RXK331M1CBK-0811S (SURGE) are active-status alternatives meeting identical specifications with 3000-hour lifetime ratings and ROHS3 compliance. These parts provide supply chain diversification.

For Voltage Margin Applications:

UKA1E331MPD, UPA1E331MPD, and UVY1E331MPD are 25V-rated upgrades suitable for circuits where additional voltage headroom is beneficial. All maintain identical physical footprint and are ROHS3 compliant. UPA1E331MPD (active status, 3000 Hrs @ 105°C) is preferred for new designs.

Compliance Consideration:

The original UVZ1C331MPH is RoHS non-compliant. All recommended substitutes are ROHS3 compliant, meeting current manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can UVZ1C331MPD be used as a direct replacement for UVZ1C331MPH?

A: Yes. Both parts share identical electrical specifications (330µF, 16V, 1000 Hrs @ 105°C) and physical dimensions (0.315" Dia × 0.512" Height, 0.138" lead spacing). UVZ1C331MPD is ROHS3 compliant and requires no circuit modification.

Q: What is the difference between 16V and 25V rated substitutes?

A: 25V-rated parts (UKA1E331MPD, UPA1E331MPD, UVY1E331MPD) are electrically compatible in 16V circuits and provide additional voltage safety margin. Physical dimensions remain identical. Selection depends on circuit voltage stress analysis and design requirements.

Q: Why do some substitutes have longer lifetimes (2000 Hrs or 3000 Hrs)?

A: Extended lifetime ratings reflect improved internal construction and materials. Parts with 3000-hour ratings (UPA1C331MPD, 337KXM016M, RXK331M1CBK-0811S) are suitable for applications requiring enhanced reliability or extended service intervals.

Q: Are cross-manufacturer parts (Cornell Dubilier, SURGE, Rubycon) fully compatible?

A: Yes, when electrical and mechanical parameters match. 337KXM016M, RXK331M1CBK-0811S, and 25PX330MEFC8X11.5 meet identical specifications for capacitance, voltage, tolerance, physical dimensions, and lead spacing. Verify with your procurement process for supply chain qualification.

Q: What is the significance of ripple current ratings?

A: Ripple current capacity indicates the maximum AC current the capacitor can handle at specified frequencies. Higher ripple current capability provides design margin for power supply and filtering applications. Substitutes with equal or higher ripple current ratings are suitable for direct replacement.

Q: Is the UVZ1C331MPH still available for purchase?

A: The part is classified as obsolete. Inventory exists (1083 Pcs reported), but supply is limited and not recommended for new designs. Transition to active-status alternatives such as UPA1C331MPD or cross-manufacturer equivalents.

Q: What does "Not For New Designs" status mean?

A: This designation indicates the part is being phased out. While functional and available, it should not be selected for new product development. Active-status parts (UPA1C331MPD, 337KXM016M, RXK331M1CBK-0811S, 25PX330MEFC8X11.5) are recommended for new designs.

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