Equivalent & Substitute Parts for UPW2A331MHH

Part Overview

The UPW2A331MHH is a 330 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part operates across a temperature range of -55°C to 105°C with a rated lifetime of 8000 hours at 105°C, suitable for general-purpose applications requiring stable capacitance and ripple current handling.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	100 V
Tolerance	±20%
Operating Temperature Range	-55°C to 105°C
Lifetime @ 105°C	8000 Hrs
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.295" (7.50 mm)
Case Diameter	0.630" (16.00 mm)
Height (Seated Max)	0.984" (25.00 mm)

Substitute Part Grouping Explanation

Substitution for the UPW2A331MHH is determined by strict equivalence across the following critical parameters: capacitance value (330 µF), voltage rating (100 V), tolerance (±20%), polarization (polar), package configuration (radial can), mounting type (through hole), and lead spacing (7.50 mm). All substitute parts must maintain these electrical and mechanical specifications to ensure direct compatibility in existing PCB layouts and circuit designs.

The substitute parts identified fall into two categories:

Direct Manufacturer Substitutes (Nichicon): Parts from the same manufacturer that share identical electrical ratings and mechanical footprints, differing primarily in product status and packaging format.

Similar Manufacturer Substitutes (Panasonic): Parts from alternative manufacturers that meet the same electrical specifications and physical dimensions, with variations in lifetime ratings and certifications.

Parameter Comparison

Parameter	UPW2A331MHH	UPW2A331MHD	EEU-FC2A331	EEU-FC2A331S
Manufacturer	Nichicon	Nichicon	Panasonic	Panasonic
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage Rating	100 V	100 V	100 V	100 V
Tolerance	±20%	±20%	±20%	±20%
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Lifetime @ 105°C	8000 Hrs	8000 Hrs	5000 Hrs	5000 Hrs
Polarization	Polar	Polar	Polar	Polar
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Lead Spacing	7.50 mm	7.50 mm	7.50 mm	7.50 mm
Case Diameter	16.00 mm	16.00 mm	16.00 mm	18.00 mm
Height (Seated Max)	25.00 mm	25.00 mm	31.50 mm	25.00 mm
Product Status	Obsolete	Not For New Designs	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Ratings	—	—	AEC-Q200	AEC-Q200

Engineering Selection Recommendations

UPW2A331MHD (Nichicon): This part maintains identical electrical specifications and mechanical dimensions to the UPW2A331MHH, with the primary distinction being ROHS3 compliance and higher inventory availability. Product status is classified as "Not For New Designs," indicating limited long-term support. Selection is appropriate for legacy system maintenance where Nichicon component continuity is required.

EEU-FC2A331 (Panasonic): This part meets all electrical and mechanical substitution criteria with ROHS3 compliance and active product status. The case diameter remains 16.00 mm with identical lead spacing. Height increases to 31.50 mm, requiring PCB layout verification. AEC-Q200 certification indicates automotive-grade qualification. Lifetime rating is 5000 hours at 105°C, lower than the original specification.

EEU-FC2A331S (Panasonic): This variant provides ROHS3 compliance and active product status with AEC-Q200 certification. Case diameter increases to 18.00 mm while height remains at 25.00 mm, matching the original part height. Lead spacing and electrical specifications remain equivalent. Lifetime rating is 5000 hours at 105°C.

Selection between Panasonic alternatives depends on available PCB space: EEU-FC2A331S maintains original height but increases diameter; EEU-FC2A331 maintains original diameter but increases height.

Frequently Asked Questions (FAQ)

Q: Can UPW2A331MHD be used as a direct replacement for UPW2A331MHH?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (100 V), tolerance (±20%), operating temperature range (-55°C to 105°C), lifetime (8000 hours at 105°C), and mechanical dimensions (16.00 mm diameter, 25.00 mm height, 7.50 mm lead spacing). The primary difference is product status and RoHS compliance.

Q: What are the physical constraints when substituting with Panasonic EEU-FC2A331?

A: The EEU-FC2A331 increases height to 31.50 mm compared to the original 25.00 mm. Case diameter remains 16.00 mm. Lead spacing is unchanged at 7.50 mm. PCB layout must accommodate the additional 6.50 mm height to prevent mechanical interference.

Q: What are the physical constraints when substituting with Panasonic EEU-FC2A331S?

A: The EEU-FC2A331S increases case diameter to 18.00 mm while maintaining height at 25.00 mm. Lead spacing remains 7.50 mm. PCB layout must accommodate the additional 2.00 mm diameter to prevent component overlap or clearance violations.

Q: How does the lifetime rating differ between substitutes?

A: The original UPW2A331MHH and direct substitute UPW2A331MHD both specify 8000 hours at 105°C. Panasonic alternatives (EEU-FC2A331 and EEU-FC2A331S) specify 5000 hours at 105°C, representing a 37.5% reduction in rated lifetime under thermal stress conditions.

Q: Are the Panasonic substitutes suitable for automotive applications?

A: Yes. Both EEU-FC2A331 and EEU-FC2A331S carry AEC-Q200 certification, indicating qualification for automotive-grade reliability standards. The original Nichicon parts do not carry this certification.

Q: What is the impact of RoHS compliance on part selection?

A: The original UPW2A331MHH is RoHS non-compliant. All substitute parts (UPW2A331MHD, EEU-FC2A331, EEU-FC2A331S) are ROHS3 compliant. Selection of compliant alternatives is necessary for applications subject to RoHS regulatory requirements.

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