UFG1E331MPM Equivalent & Substitute Parts

Part Overview

The UFG1E331MPM is a 330 µF, 25 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, indicating it is no longer in active production. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and accommodate evolving application requirements such as enhanced thermal performance or higher voltage ratings.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Diameter	0.394" (10.00 mm)
Height	0.866" (22.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C ~ 85°C
Lifetime @ Temperature	1000 Hrs @ 85°C
Ripple Current @ 120 Hz	351 mA
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UFG1E331MPM is determined by the following critical parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: Minimum 25 V (higher ratings acceptable for direct substitution)
Tolerance: ±20% (matching or tighter tolerance acceptable)
Package Geometry: Radial, can with 0.197" (5.00 mm) lead spacing, 0.394" (10.00 mm) diameter
Mounting Type: Through hole
Polarization: Polar

Substitute parts are grouped into two categories:

Category 1: Direct Upgrades (Same Voltage or Higher) Parts with 25 V or higher voltage ratings, identical capacitance, and compatible package dimensions. These provide direct functional replacement with potential improvements in thermal performance or ripple current handling.

Category 2: Enhanced Performance Variants Parts with higher voltage ratings (35 V, 50 V, 63 V) that maintain identical physical dimensions and lead spacing. These offer superior thermal stability, extended lifetime ratings, and increased ripple current capacity while remaining mechanically and electrically compatible.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Ripple Current @ 120 Hz	Product Status	RoHS Status
UFG1E331MPM	Nichicon	UFG	330 µF	25 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	351 mA	Obsolete	ROHS3
UBT1V331MPD8	Nichicon	UBT	330 µF	35 V	±20%	5000 Hrs @ 125°C	-40°C ~ 125°C	475 mA	Active	ROHS3
UBW1V331MPD	Nichicon	UBW	330 µF	35 V	±20%	2000 Hrs @ 135°C	-55°C ~ 135°C	475 mA	Active	ROHS3
UHW1H331MPD	Nichicon	UHW	330 µF	50 V	±20%	10000 Hrs @ 105°C	-40°C ~ 105°C	1.03 A	Not For New Designs	ROHS3
UKA1V331MPD1TD	Nichicon	UKA	330 µF	35 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	350 mA	Not For New Designs	ROHS3
UKL1E331KPD	Nichicon	UKL	330 µF	25 V	±10%	2000 Hrs @ 85°C	-40°C ~ 85°C	490 mA	Not For New Designs	ROHS3
UKT1V331MPD	Nichicon	UKT	330 µF	35 V	±20%	1000 Hrs @ 105°C	-55°C ~ 105°C	350 mA	Not For New Designs	ROHS3
UPJ1V331MPD	Nichicon	UPJ	330 µF	35 V	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	810 mA	Not For New Designs	ROHS3
UPM1V331MPD	Nichicon	UPM	330 µF	35 V	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	810 mA	Not For New Designs	ROHS3
UVR1J331MPD	Nichicon	UVR	330 µF	63 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	710 mA	Not For New Designs	ROHS3
UVY1J331MPD	Nichicon	UVY	330 µF	63 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	510 mA	Not For New Designs	ROHS3

Engineering Selection Recommendations

For Active Production Designs: UBT1V331MPD8 and UBW1V331MPD are the preferred substitutes. Both are active products with ROHS3 compliance. UBT1V331MPD8 offers extended lifetime (5000 Hrs @ 125°C) and expanded operating temperature range (-40°C ~ 125°C). UBW1V331MPD extends the upper operating temperature to 135°C, suitable for high-temperature environments.

For Designs Requiring Voltage Margin: UHW1H331MPD (50 V) and UVR1J331MPD or UVY1J331MPD (63 V) provide increased voltage headroom. UHW1H331MPD delivers the highest ripple current capacity (1.03 A @ 120 Hz) and extended lifetime (10000 Hrs @ 105°C), though marked as not for new designs. UVY1J331MPD offers 63 V rating with 2000 Hrs @ 105°C lifetime.

For Tighter Tolerance Requirements: UKL1E331KPD provides ±10% tolerance versus the original ±20%, maintaining 25 V rating with improved capacitance accuracy.

For Automotive Applications: UPM1V331MPD carries AEC-Q200 qualification and is rated for automotive use with 5000 Hrs @ 105°C lifetime and 60 mOhms impedance.

All substitute parts maintain identical package geometry (0.394" diameter, 0.197" lead spacing, through-hole mounting) and are ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can UFG1E331MPM be replaced with a higher voltage-rated part? A: Yes. Higher voltage ratings (35 V, 50 V, 63 V) are electrically compatible substitutes. The circuit will operate safely with increased voltage margin. Physical dimensions remain identical, ensuring mechanical compatibility.

Q: What is the difference between 25 V and 35 V rated parts? A: The 35 V rating provides additional voltage safety margin. Both maintain 330 µF capacitance and identical package dimensions. Higher voltage parts typically offer improved thermal performance and extended lifetime ratings.

Q: Are all substitute parts pin-compatible? A: Yes. All listed substitutes maintain 0.197" (5.00 mm) lead spacing and 0.394" (10.00 mm) diameter, ensuring direct PCB compatibility without layout modifications.

Q: Which substitute offers the best thermal performance? A: UBW1V331MPD and UBT1V331MPD8 provide superior thermal performance with extended operating temperature ranges (-55°C ~ 135°C and -40°C ~ 125°C respectively) and longer lifetime ratings at elevated temperatures.

Q: Is UKL1E331KPD suitable as a direct replacement? A: Yes. UKL1E331KPD maintains the 25 V rating and offers tighter ±10% tolerance. It is mechanically and electrically compatible, with improved capacitance accuracy.

Q: What does "Not For New Designs" status mean? A: This designation indicates the part is available but Nichicon does not recommend it for new product development. Active status parts (UBT1V331MPD8, UBW1V331MPD) are preferred for new designs.

Q: Are all substitutes ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance, matching the original UFG1E331MPM specification.

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