UHE1V331MPT Equivalent & Substitute Parts

Part Overview

The UHE1V331MPT is a 330 µF, 35 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete and no longer recommended for new designs. The part delivers 7000 hours of operational life at 105°C with a ±20% capacitance tolerance, suitable for general-purpose applications requiring stable DC filtering and energy storage.

Due to its obsolete status, identifying equivalent and substitute parts is necessary for ongoing maintenance, repair, and legacy system support. Substitute parts must maintain electrical compatibility while meeting current manufacturing standards and compliance requirements.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	35 V
Tolerance	±20%
Lifetime @ 105°C	7000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Height (Seated Max)	0.630" (16.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
Polarization	Polar

Substitute Part Grouping Explanation

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

Critical Parameters (Must Match):

Capacitance: 330 µF
Voltage Rating: 35 V
Tolerance: ±20%
Polarization: Polar
Mounting Type: Through Hole
Package Type: Radial, Can

Mechanical Compatibility Parameters:

Lead Spacing: 0.197" (5.00 mm)
Case Diameter: 0.394" (10.00 mm)
Height: Seated maximum dimension must not exceed PCB clearance requirements

Performance Parameters:

Operating Temperature Range: -40°C ~ 105°C minimum
Lifetime @ 105°C: 7000 hours or greater

Substitute parts are grouped into three categories based on their relationship to the main part:

Direct Substitutes: Parts with identical electrical specifications and mechanical dimensions, differing only in packaging format or product status.

Upgrade Substitutes: Parts with superior performance characteristics (extended lifetime, lower ESR, improved ripple current handling) while maintaining full electrical and mechanical compatibility.

Similar Substitutes: Parts meeting all critical electrical parameters with minor mechanical variations (height or lead spacing differences) that may require PCB layout verification.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Lead Spacing	Case Dia	Height (Max)	Product Status	RoHS Status
UHE1V331MPT	Nichicon	330 µF	35 V	±20%	7000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.630" (16.00 mm)	Obsolete	Non-compliant
UHE1V331MPD	Nichicon	330 µF	35 V	±20%	7000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.630" (16.00 mm)	Not For New Designs	ROHS3 Compliant
EEU-EB1V331	Panasonic	330 µF	35 V	±20%	10000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.669" (17.00 mm)	Active	ROHS3 Compliant
EKY-350ELL331MJ16S	Chemi-Con	330 µF	35 V	±20%	7000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	Active	ROHS3 Compliant
EEU-FM1V331	Panasonic	330 µF	35 V	±20%	4000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	Active	ROHS3 Compliant
EEU-FM1V331B	Panasonic	330 µF	35 V	±20%	4000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.689" (17.50 mm)	Active	ROHS3 Compliant
EEU-FM1V331L	Panasonic	330 µF	35 V	±20%	4000 Hrs	0.138" (4.60 mm)	0.315" (8.00 mm)	0.866" (22.00 mm)	Active	ROHS3 Compliant
EEU-FM1V331LB	Panasonic	330 µF	35 V	±20%	4000 Hrs	0.197" (5.00 mm)	0.315" (8.00 mm)	0.866" (22.00 mm)	Active	ROHS3 Compliant
EEU-FM1V331LBJ	Panasonic	330 µF	35 V	±20%	4000 Hrs	0.197" (5.00 mm)	0.315" (8.00 mm)	0.866" (22.00 mm)	Active	ROHS3 Compliant
KY35VB331M10X16LL	Chemi-Con	330 µF	35 V	±20%	7000 Hrs	0.197" (5.00 mm)	0.394" (10.00 mm)	0.630" (16.00 mm)	Active	Non-compliant

Engineering Selection Recommendations

Direct Substitutes (Preferred for Immediate Replacement):

UHE1V331MPD is the direct equivalent to UHE1V331MPT with identical electrical and mechanical specifications. The primary distinction is product status and RoHS compliance. UHE1V331MPD carries ROHS3 compliance and is classified as "Not For New Designs," making it suitable for legacy system repairs where the original part is unavailable.

Upgrade Substitutes (Recommended for New Designs and Extended Service Life):

EEU-EB1V331 (Panasonic) provides superior performance with 10000 hours lifetime at 105°C compared to the original 7000 hours. This part is actively manufactured and ROHS3 compliant. Height increases from 0.630" to 0.669", requiring PCB clearance verification. The extended lifetime provides enhanced reliability for critical applications.

EKY-350ELL331MJ16S (Chemi-Con) maintains the 7000-hour lifetime specification with active product status and ROHS3 compliance. Height is 0.689", requiring PCB layout verification. This part offers equivalent performance with modern manufacturing standards.

Parametric Equivalents (Conditional Substitution):

KY35VB331M10X16LL (Chemi-Con) matches the original UHE1V331MPT in all critical electrical parameters and mechanical dimensions (0.630" height). However, it carries non-compliant RoHS status, limiting its use to legacy applications where RoHS compliance is not mandated.

Lower Performance Alternatives (Use Only When Space or Cost Constraints Exist):

EEU-FM1V331, EEU-FM1V331B, EEU-FM1V331LB, and EEU-FM1V331LBJ (Panasonic FM-A series) provide 330 µF at 35 V with 4000-hour lifetime at 105°C. These parts are actively manufactured and ROHS3 compliant. The reduced lifetime (4000 vs. 7000 hours) and increased height (0.689" to 0.866") require application-specific evaluation. EEU-FM1V331L and EEU-FM1V331LB feature reduced case diameter (0.315"), necessitating PCB layout redesign.

Frequently Asked Questions (FAQ)

Q: Can UHE1V331MPT be directly replaced with UHE1V331MPD?

A: Yes. UHE1V331MPD is electrically and mechanically identical to UHE1V331MPT. Both parts share the same capacitance (330 µF), voltage rating (35 V), tolerance (±20%), lifetime (7000 hours at 105°C), and physical dimensions. The primary difference is packaging format and RoHS compliance status. UHE1V331MPD is suitable for direct substitution in legacy system repairs.

Q: What is the impact of using a substitute with greater height?

A: Substitute parts with increased height (EEU-EB1V331 at 0.669", EKY-350ELL331MJ16S at 0.689", or FM-A series at 0.689" to 0.866") require verification of available PCB clearance above the component mounting location. If clearance is insufficient, either the PCB layout must be modified or an alternative part with compatible dimensions must be selected. Height is a critical mechanical parameter for through-hole components in confined spaces.

Q: Are all substitute parts RoHS compliant?

A: No. KY35VB331M10X16LL carries non-compliant RoHS status. All other listed substitutes (UHE1V331MPD, EEU-EB1V331, EKY-350ELL331MJ16S, and all Panasonic FM-A variants) are ROHS3 compliant. RoHS compliance is mandatory for applications subject to EU Directive 2011/65/EU or equivalent regional regulations.

Q: What is the difference between 7000-hour and 4000-hour lifetime ratings?

A: Lifetime rating indicates the expected operational duration at maximum rated temperature (105°C) before capacitance degradation exceeds the specified tolerance. A 7000-hour rating provides longer service life than a 4000-hour rating under identical thermal conditions. For applications requiring extended operational life or operating continuously at elevated temperatures, parts with 7000-hour or greater ratings (UHE1V331MPT, UHE1V331MPD, EEU-EB1V331, EKY-350ELL331MJ16S, KY35VB331M10X16LL) are preferred over 4000-hour alternatives.

Q: Can EEU-FM1V331L or EEU-FM1V331LB be used as direct replacements?

A: No. These parts feature reduced case diameter (0.315" vs. 0.394") and increased height (0.866" vs. 0.630"), requiring PCB layout modification. Additionally, the 4000-hour lifetime is lower than the original 7000-hour specification. These parts are suitable only when PCB redesign is feasible and reduced lifetime is acceptable for the application.

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

A: EEU-EB1V331 (Panasonic) provides the highest reliability with 10000-hour lifetime at 105°C, active product status, and ROHS3 compliance. This part is recommended for new designs and applications requiring extended service intervals. Height verification (0.669" vs. original 0.630") is required before implementation.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in Bulk, Cut Tape (CT), and unspecified packaging formats. Packaging selection depends on procurement volume and assembly process requirements. Bulk packaging is standard for high-volume production; Cut Tape is suitable for automated pick-and-place assembly; unspecified packaging indicates standard manufacturer packaging.

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