UPJ1E331MPD6 Equivalent & Substitute Parts

Part Overview

The UPJ1E331MPD6 is a 330 µF, 25 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for 5000 hours at 105°C and is classified as Not For New Designs. Given this product status, identifying equivalent and substitute parts is essential for ongoing maintenance, repair, and legacy system support where direct replacements or higher-rated alternatives may be required.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ 105°C	5000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00mm)
Case Diameter	0.394" (10.00mm)
Height	0.650" (16.50mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UPJ1E331MPD6 is determined by the following criteria:

Direct Equivalents maintain identical electrical specifications: 330 µF capacitance, 25 V voltage rating, ±20% tolerance, and through-hole radial mounting with 5.00mm lead spacing and 10.00mm case diameter. These parts are interchangeable without circuit modification.

Upgraded Substitutes increase the voltage rating to 35 V while maintaining 330 µF capacitance and compatible physical dimensions. These provide enhanced voltage margin and are electrically backward-compatible in 25 V applications.

Similar Parts share the same capacitance and voltage but differ in physical dimensions (lead spacing and case size), lifetime ratings, or impedance characteristics. These require PCB layout verification before substitution.

Cross-Manufacturer Alternatives from EPCOS/TDK and Panasonic provide equivalent or superior performance with different series designations and certifications.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ 105°C	Lead Spacing	Case Diameter	Height	Impedance	Product Status
UPJ1E331MPD6	Nichicon	330 µF	25 V	5000 Hrs	5.00mm	10.00mm	16.50mm	150 mOhms	Not For New Designs
UPW1E331MPD6	Nichicon	330 µF	25 V	3000 Hrs	4.60mm	8.00mm	15.00mm	85 mOhms	Active
UPW1E331MPD	Nichicon	330 µF	25 V	5000 Hrs	5.00mm	10.00mm	12.50mm	90 mOhms	Not For New Designs
UPM1E331MPD6	Nichicon	330 µF	25 V	5000 Hrs	5.00mm	10.00mm	17.00mm	95 mOhms	Not For New Designs
UPS1E331MPD	Nichicon	330 µF	25 V	2000 Hrs	5.00mm	10.00mm	14.00mm	190 mOhms	Not For New Designs
UPJ1E331MPD	Nichicon	330 µF	25 V	3000 Hrs	4.60mm	8.00mm	21.00mm	130 mOhms	Not For New Designs
UPM1E331MPD	Nichicon	330 µF	25 V	3000 Hrs	4.60mm	8.00mm	21.50mm	85 mOhms	Not For New Designs
UPW1V331MPD	Nichicon	330 µF	35 V	5000 Hrs	5.00mm	10.00mm	16.00mm	68 mOhms	Not For New Designs
B41858C7337M000	EPCOS - TDK Electronics	330 µF	35 V	5000 Hrs	5.00mm	10.00mm	17.00mm	105 mOhms	Active
B41888C7337M000	EPCOS - TDK Electronics	330 µF	35 V	7000 Hrs	5.00mm	10.00mm	17.00mm	59 mOhms	Active
EEU-FC1E331	Panasonic Electronic Components	330 µF	25 V	3000 Hrs	5.00mm	10.00mm	12.50mm	90 mOhms	Active

Engineering Selection Recommendations

Direct Replacement (Same Footprint & Electrical Specs): UPW1E331MPD and UPM1E331MPD6 are direct mechanical and electrical substitutes with identical lead spacing (5.00mm), case diameter (10.00mm), and voltage rating (25 V). Both maintain 5000-hour lifetime at 105°C. UPM1E331MPD6 carries AEC-Q200 automotive qualification, making it suitable for automotive applications where the original part is used.

Upgraded Voltage Alternative (35 V Rating): UPW1V331MPD, B41858C7337M000, and B41888C7337M000 provide 35 V voltage rating with identical 330 µF capacitance and compatible 5.00mm lead spacing and 10.00mm case diameter. These are electrically backward-compatible in 25 V circuits and offer improved voltage margin. B41888C7337M000 provides the longest lifetime (7000 hours) and lowest impedance (59 mOhms) among upgraded options and carries AEC-Q200 certification.

Active Product Alternative: EEU-FC1E331 from Panasonic is an active product with identical electrical specifications (330 µF, 25 V, ±20% tolerance) and compatible footprint (5.00mm lead spacing, 10.00mm case diameter). It carries AEC-Q200 automotive qualification and is suitable for new designs and ongoing production.

Smaller Footprint Alternatives: UPW1E331MPD6, UPJ1E331MPD, and UPM1E331MPD feature reduced lead spacing (4.60mm) and case diameter (8.00mm). These require PCB layout modification and are suitable only when space constraints justify redesign.

Frequently Asked Questions (FAQ)

Q: Can UPW1V331MPD (35 V) be used in place of UPJ1E331MPD6 (25 V)? A: Yes. The 35 V rating is a higher voltage specification that is electrically backward-compatible in 25 V applications. The capacitor will operate safely with improved voltage margin. Physical dimensions (lead spacing 5.00mm, case diameter 10.00mm) are identical, requiring no PCB modification.

Q: What is the difference between UPM1E331MPD6 and UPJ1E331MPD6? A: Both are 330 µF, 25 V, 5000-hour capacitors with identical footprints (5.00mm lead spacing, 10.00mm case diameter). UPM1E331MPD6 carries AEC-Q200 automotive qualification and lower impedance (95 mOhms vs. 150 mOhms), making it suitable for automotive applications. UPJ1E331MPD6 is rated for general purpose use.

Q: Why do some substitutes have different physical dimensions? A: UPJ1E331MPD and UPM1E331MPD use 4.60mm lead spacing and 8.00mm case diameter, representing a different physical package within the same electrical specification. These require PCB layout verification and are not direct drop-in replacements.

Q: Is EEU-FC1E331 a suitable replacement for new designs? A: Yes. EEU-FC1E331 is an active product from Panasonic with identical electrical specifications (330 µF, 25 V, ±20% tolerance) and compatible footprint. It carries AEC-Q200 automotive qualification and is approved for new designs.

Q: What does "Not For New Designs" mean? A: This product status indicates the part is obsolete or being phased out by the manufacturer. It remains available for repair and maintenance of existing systems but should not be specified for new product development. Active alternatives such as EEU-FC1E331 or B41888C7337M000 are recommended for new designs.

Q: How does impedance affect capacitor selection? A: Lower impedance indicates better high-frequency performance and lower ripple current losses. B41888C7337M000 (59 mOhms) and UPW1V331MPD (68 mOhms) provide superior impedance performance compared to the original UPJ1E331MPD6 (150 mOhms), resulting in reduced heat generation in high-ripple-current applications.

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