UPW1A331MPD Equivalent & Substitute Parts

Part Overview

The UPW1A331MPD is a 330 µF, 10 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 This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Organizations using this part in active applications require equivalent alternatives that maintain electrical and mechanical compatibility while meeting current design standards and compliance requirements.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)
Height (Seated Max)	0.453" (11.50 mm)
Operating Temperature Range	-55°C to 105°C
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UPW1A331MPD is determined by the following criteria:

Primary Compatibility Requirements:

Capacitance: 330 µF (exact match required)
Voltage Rating: 10 V minimum (equal or higher voltage rating acceptable)
Tolerance: ±20% (matching tolerance)
Package Type: Radial, Can (mechanical form factor)
Mounting Type: Through Hole
Lead Spacing: 0.138" (4.60 mm) for direct PCB compatibility
Case Diameter: 0.315" (8.00 mm)
Polarization: Polar

Secondary Considerations:

Operating Temperature Range: -55°C to 105°C minimum
RoHS3 Compliance: Required for regulatory alignment
Lifetime @ Temperature: Varies by series; higher lifetime ratings provide extended service life

Parts are grouped into three categories based on substitution relationship:

Upgrade Category: UPW1C331MPD (same series, higher voltage rating of 16 V)

Similar Category: UPM1A331MPD, UPV1A331MGD (Nichicon series alternatives with matching electrical specifications)

Direct Category: EEU-FC1A331 (Panasonic equivalent with active product status)

Similar Category (Alternative Manufacturers): EEU-FC1A331B, EEU-FC1A331BJ (Panasonic variants), ELXY100ELL331MH12D, ELXZ100ELL331MF15D (Chemi-Con alternatives)

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lead Spacing	Height (Max)	Lifetime @ 105°C	Product Status	Impedance
UPW1A331MPD	Nichicon	330 µF	10 V	±20%	0.138" (4.60 mm)	0.453" (11.50 mm)	3000 Hrs	Not For New Designs	117 mOhms
UPW1C331MPD	Nichicon	330 µF	16 V	±20%	0.138" (4.60 mm)	0.453" (11.50 mm)	3000 Hrs	Not For New Designs	117 mOhms
UPM1A331MPD	Nichicon	330 µF	10 V	±20%	0.138" (4.60 mm)	0.512" (13.00 mm)	3000 Hrs	Not For New Designs	160 mOhms
UPV1A331MGD	Nichicon	330 µF	10 V	±20%	0.138" (4.60 mm)	0.512" (13.00 mm)	5000 Hrs	Not For New Designs	270 mOhms
EEU-FC1A331	Panasonic	330 µF	10 V	±20%	0.138" (4.60 mm)	0.453" (11.50 mm)	2000 Hrs	Active	117 mOhms
EEU-FC1A331B	Panasonic	330 µF	10 V	±20%	0.197" (5.00 mm)	0.650" (16.50 mm)	2000 Hrs	Active	117 mOhms
EEU-FC1A331BJ	Panasonic	330 µF	10 V	±20%	0.138" (4.60 mm)	0.492" (12.50 mm)	2000 Hrs	Active	117 mOhms
ELXY100ELL331MH12D	Chemi-Con	330 µF	10 V	±20%	0.138" (4.60 mm)	0.531" (14.60 mm)	3000 Hrs	Active	170 mOhms
ELXZ100ELL331MF15D	Chemi-Con	330 µF	10 V	±20%	0.098" (2.50 mm)	0.650" (16.50 mm)	2000 Hrs	Active	180 mOhms

Engineering Selection Recommendations

For Direct Replacement (Identical PCB Footprint):

EEU-FC1A331BJ is the preferred substitute. It maintains the exact lead spacing of 0.138" (4.60 mm) and case diameter of 0.315" (8.00 mm), ensuring direct PCB compatibility without layout modifications. This Panasonic component carries Active product status and AEC-Q200 automotive qualification, providing assurance of ongoing availability and quality standards.

For Applications Requiring Higher Voltage Margin:

UPW1C331MPD provides a voltage upgrade to 16 V within the same Nichicon UPW series, maintaining identical physical dimensions and lead spacing. This option is suitable when circuit design permits higher voltage rating without performance impact.

For Extended Lifetime Requirements:

UPV1A331MGD offers 5000 hours lifetime at 105°C compared to the original 3000 hours, providing enhanced reliability for long-term applications. Physical dimensions remain compatible with the original part.

For Active Product Status with Automotive Qualification:

ELXY100ELL331MH12D (Chemi-Con) and EEU-FC1A331 (Panasonic) both carry Active product status and AEC-Q200 certification. These components are suitable for new designs and automotive applications requiring current manufacturer support.

Lead Spacing Considerations:

EEU-FC1A331B and ELXZ100ELL331MF15D feature different lead spacing (0.197" and 0.098" respectively) and require PCB layout modification. These options are applicable only when physical constraints permit design changes.

Frequently Asked Questions (FAQ)

Q: Can EEU-FC1A331BJ be used as a direct replacement for UPW1A331MPD?

A: Yes. Both parts share identical lead spacing (0.138" / 4.60 mm), case diameter (0.315" / 8.00 mm), and electrical specifications (330 µF, 10 V, ±20% tolerance). The height difference of 0.039" (1.00 mm) is within typical PCB clearance tolerances for through-hole components.

Q: What is the difference between UPW1C331MPD and UPW1A331MPD?

A: The primary difference is voltage rating: UPW1C331MPD is rated 16 V versus 10 V for UPW1A331MPD. Both maintain identical physical dimensions and capacitance. The 16 V rating provides additional voltage margin and is electrically compatible in 10 V applications.

Q: Why do some substitutes have different lead spacing?

A: Lead spacing variation reflects different manufacturing series and design generations. Parts with 0.197" (5.00 mm) or 0.098" (2.50 mm) spacing require PCB redesign and are suitable only when layout modifications are feasible.

Q: What does "Active" product status mean compared to "Not For New Designs"?

A: Active status indicates the manufacturer continues production and provides full technical support. "Not For New Designs" indicates the part is in end-of-life phase with limited availability. For new applications, Active status parts (EEU-FC1A331, ELXY100ELL331MH12D) are preferred.

Q: Are all listed substitutes RoHS3 compliant?

A: Yes. All parts listed meet ROHS3 compliance requirements, ensuring regulatory alignment for current manufacturing standards.

Q: What is the significance of AEC-Q200 certification?

A: AEC-Q200 certification indicates the component meets automotive industry reliability and quality standards. Parts carrying this rating (EEU-FC1A331, EEU-FC1A331B, EEU-FC1A331BJ, ELXY100ELL331MH12D, ELXZ100ELL331MF15D) are qualified for automotive applications.

Q: How does impedance variation affect substitution?

A: Impedance values range from 117 mOhms to 270 mOhms across the substitute list. Lower impedance generally indicates better high-frequency performance. Selection depends on circuit requirements; identical impedance is not required for functional equivalence at the specified electrical parameters.

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