UPW1A331MPH Equivalent & Substitute Parts

Part Overview

The UPW1A331MPH is a 330 µF, 10 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 maintenance, repair, and legacy system support. The part operates across a temperature range of -55°C to 105°C with a rated lifetime of 3000 hours at 105°C, suitable for general-purpose applications requiring stable capacitance and low impedance characteristics.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Impedance	117 mOhms
Ripple Current @ 120 Hz	360.75 mA
Lead Spacing	0.138" (4.60 mm)
Package Type	Radial, Can
Mounting Type	Through Hole
Size / Dimension	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.453" (11.50 mm)

Substitute Part Grouping Explanation

Substitution for the UPW1A331MPH is determined by strict equivalence across the following critical parameters: capacitance value (330 µF), voltage rating (10 V minimum), tolerance (±20%), polarization (polar), package type (radial, can), lead spacing (0.138" / 4.60 mm), physical dimensions (0.315" diameter, 0.453" height maximum), and mounting type (through hole). Parts meeting these criteria are classified as direct equivalents or upgrades based on product status and compliance certifications.

Direct Equivalent (Same Voltage Rating):

UPW1A331MPD: Nichicon UPW series, 330 µF 10 V, identical electrical and mechanical specifications, differs only in packaging (bulk) and product status (not for new designs), RoHS3 compliant.

Upgrade Substitute (Higher Voltage Rating):

UPW1C331MPD: Nichicon UPW series, 330 µF 16 V, maintains all mechanical dimensions and lead spacing, provides higher voltage margin while preserving capacitance and impedance, RoHS3 compliant.

Cross-Manufacturer Equivalent:

EEU-FC1A331: Panasonic FC series, 330 µF 10 V, matches electrical specifications and physical footprint, active product status with AEC-Q200 automotive rating, RoHS3 compliant, differs in lifetime rating (2000 hrs @ 105°C vs. 3000 hrs).

Parameter Comparison

Parameter	UPW1A331MPH (Main)	UPW1A331MPD (Direct)	UPW1C331MPD (Upgrade)	EEU-FC1A331 (Cross-Mfg)
Manufacturer	Nichicon	Nichicon	Nichicon	Panasonic
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage Rating	10 V	10 V	16 V	10 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ 105°C	3000 Hrs	3000 Hrs	3000 Hrs	2000 Hrs
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Impedance	117 mOhms	117 mOhms	117 mOhms	117 mOhms
Ripple Current @ 120 Hz	360.75 mA	360.75 mA	360.75 mA	360.8 mA
Lead Spacing	0.138" (4.60 mm)	0.138" (4.60 mm)	0.138" (4.60 mm)	0.138" (4.60 mm)
Size / Dimension	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.453" (11.50 mm)	0.453" (11.50 mm)	0.453" (11.50 mm)	0.453" (11.50 mm)
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Not For New Designs	Not For New Designs	Active
RoHS Status	Non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Maintenance/Repair): UPW1A331MPD provides identical electrical and mechanical performance to the obsolete UPW1A331MPH. Both parts maintain 330 µF capacitance, 10 V voltage rating, 117 mOhms impedance, and 3000-hour lifetime at 105°C. UPW1A331MPD achieves RoHS3 compliance, addressing regulatory requirements for legacy system repairs.

For Voltage Margin Enhancement: UPW1C331MPD offers the same physical footprint and capacitance as the main part while providing 16 V voltage rating instead of 10 V. This upgrade maintains all mechanical compatibility and electrical performance metrics while increasing operational safety margin. RoHS3 compliance is achieved.

For Active Product Status: EEU-FC1A331 is the only active product among the substitutes, manufactured by Panasonic with AEC-Q200 automotive certification. It matches the 330 µF, 10 V specification and physical dimensions. The lifetime rating is 2000 hours at 105°C, which is lower than the original 3000-hour specification. This part is suitable for applications where active product support and automotive-grade reliability are required.

Frequently Asked Questions (FAQ)

Q: Can UPW1A331MPD be used as a direct replacement for UPW1A331MPH? A: Yes. Both parts share identical capacitance (330 µF), voltage rating (10 V), tolerance (±20%), impedance (117 mOhms), lifetime (3000 hrs @ 105°C), and physical dimensions (0.315" diameter, 0.453" height, 0.138" lead spacing). The primary difference is product status and RoHS compliance.

Q: What is the advantage of using UPW1C331MPD instead of UPW1A331MPD? A: UPW1C331MPD provides a higher voltage rating (16 V vs. 10 V) while maintaining identical capacitance, impedance, physical footprint, and lead spacing. This offers increased voltage margin for the same physical space and cost profile.

Q: Is EEU-FC1A331 a suitable substitute for legacy system repairs? A: EEU-FC1A331 matches the electrical specifications (330 µF, 10 V, ±20% tolerance) and physical dimensions of the original part. However, its lifetime rating is 2000 hours at 105°C compared to the original 3000 hours. It is suitable for applications where active product availability and automotive-grade certification (AEC-Q200) are prioritized over extended lifetime.

Q: Are all substitute parts RoHS3 compliant? A: Yes. UPW1A331MPD, UPW1C331MPD, and EEU-FC1A331 are all RoHS3 compliant, whereas the original UPW1A331MPH is RoHS non-compliant.

Q: Will the substitute parts fit the same PCB footprint? A: Yes. All substitute parts maintain identical lead spacing (0.138" / 4.60 mm), diameter (0.315" / 8.00 mm), and maximum seated height (0.453" / 11.50 mm), ensuring direct mechanical compatibility with existing through-hole PCB layouts.

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