UHE1E331MPD Equivalent & Substitute Parts

Part Overview

The UHE1E331MPD is a 330 µF, 25 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. The part delivers 7000 hours of operational life at 105°C and is suitable for general-purpose applications requiring stable capacitance and moderate ripple current handling.

Identifying equivalent and substitute parts is necessary due to the product's discontinued status for new designs. Alternative parts with matching or superior electrical characteristics and compatible mechanical dimensions ensure design continuity and supply chain flexibility.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ 105°C	7000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.138" (4.60mm)
Case Diameter	0.315" Dia (8.00mm)
Height	0.591" (15.00mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

Electrical Match: Capacitance (330 µF), voltage rating (25 V), and tolerance (±20%) must be identical
Mechanical Compatibility: Lead spacing and case diameter must accommodate existing PCB footprints
Thermal Performance: Lifetime rating and operating temperature range must meet or exceed application requirements
Regulatory Compliance: RoHS3 compliance required for all substitutes

Parts are grouped into three categories:

Nichicon Series (Same Manufacturer): UHD1E331MPD, UHE1E331MPD6, UHV1E331MPD, and UTT1E331MPD share identical electrical specifications but differ in lifetime ratings and physical dimensions. These parts maintain full compatibility with Nichicon's product ecosystem.

Panasonic Active Series (Upgrade Path): EEU-EB1E331, EEU-FM1E331, EEU-FM1E331B, EEU-FM1E331L, EEU-FM1E331LB, and EEU-FM1E331LBJ are active products from Panasonic Electronic Components. These parts meet all electrical requirements and offer extended lifetime ratings, making them suitable for long-term supply assurance.

Mechanical Variants: Parts with different lead spacing (0.197" / 5.00mm) or case diameter (0.394" / 10.00mm) require PCB layout verification before substitution.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ 105°C	Lead Spacing	Case Diameter	Height	Product Status	RoHS3
UHE1E331MPD	Nichicon	UHE	330 µF	25 V	7000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.591" (15.00mm)	Not For New Designs	Yes
UHD1E331MPD	Nichicon	UHD	330 µF	25 V	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.650" (16.50mm)	Not For New Designs	Yes
UHE1E331MPD6	Nichicon	UHE	330 µF	25 V	7000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.492" (12.50mm)	Not For New Designs	Yes
UHV1E331MPD	Nichicon	UHV	330 µF	25 V	6000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	Not For New Designs	Yes
UTT1E331MPD	Nichicon	UTT	330 µF	25 V	5000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.453" (11.50mm)	Obsolete	Yes
EEU-EB1E331	Panasonic	EB-A	330 µF	25 V	10000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.630" (16.00mm)	Active	Yes
EEU-FM1E331	Panasonic	FM-A	330 µF	25 V	4000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.551" (14.00mm)	Active	Yes
EEU-FM1E331B	Panasonic	FM-A	330 µF	25 V	4000 Hrs	0.197" (5.00mm)	0.394" (10.00mm)	0.551" (14.00mm)	Active	Yes
EEU-FM1E331L	Panasonic	FM-A	330 µF	25 V	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.650" (16.50mm)	Active	Yes
EEU-FM1E331LB	Panasonic	FM-A	330 µF	25 V	3000 Hrs	0.197" (5.00mm)	0.315" (8.00mm)	0.650" (16.50mm)	Active	Yes
EEU-FM1E331LBJ	Panasonic	FM-A	330 µF	25 V	3000 Hrs	0.197" (5.00mm)	0.315" (8.00mm)	0.650" (16.50mm)	Active	Yes

Engineering Selection Recommendations

Direct Footprint Replacement (0.138" Lead Spacing, 8.00mm Diameter)

UHV1E331MPD and EEU-EB1E331 are the primary substitutes for applications requiring identical PCB footprints. UHV1E331MPD maintains Nichicon compatibility with 6000-hour lifetime. EEU-EB1E331 is an active Panasonic product with extended 10000-hour lifetime, providing superior long-term reliability and supply continuity.

EEU-FM1E331L is an active alternative with 3000-hour lifetime and identical footprint dimensions, suitable for applications with reduced thermal stress requirements.

Alternative Footprint Options (0.197" Lead Spacing, 10.00mm Diameter)

UHE1E331MPD6 and EEU-FM1E331 share larger lead spacing and case diameter. These parts require PCB layout modification but offer different thermal and ripple current characteristics. UHE1E331MPD6 maintains 7000-hour lifetime; EEU-FM1E331 provides 4000-hour lifetime with active product status.

Obsolete Series Avoidance

UTT1E331MPD is classified as Obsolete and should not be selected for new applications despite RoHS3 compliance. UHD1E331MPD is Not For New Designs; substitution with active Panasonic parts is recommended.

Supply Chain Assurance

Panasonic EEU series parts (EB-A and FM-A) carry Active product status, ensuring long-term availability and manufacturing support. These parts are preferred for designs requiring extended production lifecycles.

Frequently Asked Questions (FAQ)

Q: Can UHE1E331MPD be directly replaced with UHV1E331MPD?

A: Yes, for identical PCB footprints. Both parts share 0.138" lead spacing and 8.00mm case diameter. UHV1E331MPD provides 6000-hour lifetime versus the original 7000 hours, representing a minor reduction in thermal endurance. Electrical specifications (330 µF, 25 V, ±20%) are identical.

Q: What is the difference between EEU-FM1E331 and EEU-FM1E331B?

A: Both parts are electrically and mechanically identical. The primary difference is packaging: EEU-FM1E331 is supplied in Bulk, while EEU-FM1E331B is supplied in Cut Tape (CT). Selection depends on assembly process requirements. Both are active Panasonic products.

Q: Is EEU-EB1E331 a suitable upgrade for UHE1E331MPD?

A: Yes. EEU-EB1E331 matches the original footprint (0.138" lead spacing, 8.00mm diameter) and electrical specifications. The upgrade provides 10000-hour lifetime at 105°C compared to 7000 hours, extending component reliability. EEU-EB1E331 is an active Panasonic product, ensuring supply continuity.

Q: Why do some substitutes have different lead spacing?

A: Lead spacing variations (0.138" versus 0.197") reflect different manufacturing series and case sizes. Parts with 0.197" spacing require PCB layout modification and cannot be used as direct drop-in replacements. Verify PCB hole spacing before selecting these alternatives.

Q: Can EEU-FM1E331L replace UHE1E331MPD in high-reliability applications?

A: EEU-FM1E331L is suitable only if the application tolerates 3000-hour lifetime at 105°C. The original part provides 7000 hours. For high-reliability or extended-life applications, EEU-EB1E331 (10000 hours) is the appropriate choice.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitutes carry RoHS3 Compliant status, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the significance of "Not For New Designs" status?

A: This designation indicates the manufacturer has discontinued the part for new product development. Existing inventory may remain available, but long-term supply is not guaranteed. Active alternatives (Panasonic EEU series) should be prioritized for new designs.

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