Equivalent & Substitute Parts for UHD1E331MPD

Part Overview

The UHD1E331MPD is a 330 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is rated for 3000 hours at 105°C and is classified as Not For New Designs. Due to its obsolescence status and limited operational lifetime, equivalent and substitute parts with improved specifications are available from both Nichicon and Panasonic Electronic Components to ensure design continuity and enhanced reliability.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ 105°C	3000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.138" (4.60mm)
Diameter	0.315" (8.00mm)
Height	0.650" (16.50mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: capacitance (330 µF), voltage rating (25 V), tolerance (±20%), polarization (polar), mounting type (through hole), and package type (radial, can). Parts are grouped into two categories:

Nichicon Series Upgrades: UHV1E331MPD, UHE1E331MPD, UHE1E331MPD6, and UTT1E331MPD maintain identical electrical specifications while offering extended operational lifetimes (5000–7000 hours at 105°C) compared to the original 3000 hours. These parts share the same lead spacing (0.138", 4.60mm) and diameter (0.315", 8.00mm) as the main part, with variations in height and impedance characteristics.

Panasonic Electronic Components Alternatives: EEU-FR1E331, EEU-FR1E331B, EEU-FM1E331, EEU-FM1E331B, EEU-FM1E331LB, and EEU-FM1E331LBJ provide equivalent capacitance and voltage ratings with operational lifetimes ranging from 3000 to 6000 hours at 105°C. These parts feature lead spacing of 0.197" (5.00mm) and diameter of 0.394" (10.00mm), requiring PCB layout verification before substitution.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ 105°C	Lead Spacing	Diameter	Height	Impedance	Product Status
UHD1E331MPD	Nichicon	UHD	330 µF	25 V	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.650" (16.50mm)	56 mOhms	Not For New Designs
UHV1E331MPD	Nichicon	UHV	330 µF	25 V	6000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	59 mOhms	Not For New Designs
UHE1E331MPD	Nichicon	UHE	330 µF	25 V	7000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.591" (15.00mm)	87 mOhms	Not For New Designs
UHE1E331MPD6	Nichicon	UHE	330 µF	25 V	7000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.492" (12.50mm)	80 mOhms	Not For New Designs
UTT1E331MPD	Nichicon	UTT	330 µF	25 V	5000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.453" (11.50mm)	400 mOhms	Obsolete
EEU-FR1E331	Panasonic	FR-A	330 µF	25 V	6000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	56 mOhms	Active
EEU-FR1E331B	Panasonic	FR-A	330 µF	25 V	6000 Hrs	0.197" (5.00mm)	0.315" (8.00mm)	0.512" (13.00mm)	56 mOhms	Active
EEU-FM1E331	Panasonic	FM-A	330 µF	25 V	4000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.551" (14.00mm)	38 mOhms	Active
EEU-FM1E331B	Panasonic	FM-A	330 µF	25 V	4000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.551" (14.00mm)	38 mOhms	Active
EEU-FM1E331LB	Panasonic	FM-A	330 µF	25 V	3000 Hrs	0.197" (5.00mm)	0.315" (8.00mm)	0.650" (16.50mm)	41 mOhms	Active
EEU-FM1E331LBJ	Panasonic	FM-A	330 µF	25 V	3000 Hrs	0.197" (5.00mm)	0.315" (8.00mm)	0.650" (16.50mm)	41 mOhms	Active

Engineering Selection Recommendations

Direct Footprint Compatibility (0.138" Lead Spacing): UHV1E331MPD, UHE1E331MPD, and EEU-FR1E331 maintain the original 0.138" (4.60mm) lead spacing and 0.315" (8.00mm) diameter, enabling direct substitution without PCB modification. UHV1E331MPD and EEU-FR1E331 both offer 6000-hour lifetimes at 105°C with equivalent impedance characteristics (59 mOhms and 56 mOhms respectively). UHE1E331MPD extends operational lifetime to 7000 hours but exhibits higher impedance (87 mOhms).

Modified Footprint Compatibility (0.197" Lead Spacing): UHE1E331MPD6, EEU-FR1E331B, EEU-FM1E331, EEU-FM1E331B, EEU-FM1E331LB, and EEU-FM1E331LBJ require PCB layout verification due to increased lead spacing. These parts are suitable for new designs or redesigns where footprint adjustment is feasible. EEU-FM series components offer lower impedance (38–41 mOhms) compared to the original part, improving ripple current handling characteristics.

Active Product Status Priority: Panasonic EEU-FR1E331B and EEU-FM series parts carry Active product status, ensuring long-term availability and supply chain stability. Nichicon UHV1E331MPD, UHE1E331MPD, and UHE1E331MPD6 are classified as Not For New Designs, limiting their suitability for new development projects.

Compliance and Certification: All listed substitute parts maintain ROHS3 compliance and are suitable for applications requiring regulatory adherence. Panasonic parts are REACH Unaffected, while Nichicon parts are REACH Affected.

Frequently Asked Questions (FAQ)

Q: Can UHV1E331MPD directly replace UHD1E331MPD without PCB modification?

A: Yes. UHV1E331MPD maintains identical lead spacing (0.138", 4.60mm) and diameter (0.315", 8.00mm) as the original part. The primary difference is extended operational lifetime (6000 hours versus 3000 hours at 105°C) and reduced height (0.512" versus 0.650"), which may require clearance verification in confined spaces.

Q: What is the key difference between Nichicon and Panasonic substitute options?

A: Nichicon substitutes (UHV1E331MPD, UHE1E331MPD, UHE1E331MPD6) are classified as Not For New Designs, making them suitable for legacy system maintenance. Panasonic EEU-FR and EEU-FM series parts carry Active status, ensuring availability for new designs and long-term supply chain support.

Q: Do parts with 0.197" lead spacing require PCB redesign?

A: Yes. Parts including UHE1E331MPD6, EEU-FR1E331B, EEU-FM1E331, EEU-FM1E331B, EEU-FM1E331LB, and EEU-FM1E331LBJ feature 0.197" (5.00mm) lead spacing compared to the original 0.138" (4.60mm). PCB layout verification and potential trace routing adjustment are necessary before substitution.

Q: Which substitute part offers the longest operational lifetime?

A: UHE1E331MPD and UHE1E331MPD6 both provide 7000-hour operational lifetime at 105°C, representing the maximum available among listed substitutes. This exceeds the original UHD1E331MPD specification by 4000 hours.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance. Panasonic parts are additionally REACH Unaffected, while Nichicon parts are REACH Affected.

Q: What impedance characteristics should be considered when selecting a substitute?

A: The original UHD1E331MPD exhibits 56 mOhms impedance. UHV1E331MPD (59 mOhms) and EEU-FR1E331 (56 mOhms) provide equivalent impedance performance. EEU-FM series parts offer lower impedance (38–41 mOhms), improving ripple current handling. UHE1E331MPD (87 mOhms) and UTT1E331MPD (400 mOhms) exhibit higher impedance and may require circuit performance evaluation.

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