UFG1E331MPM1TD Equivalent & Substitute Parts

Part Overview

The UFG1E331MPM1TD is a 330 µF, 25 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Obsolete, indicating it is no longer in active production. The UFG series offers a 1000-hour lifetime rating at 85°C, making it suitable for audio applications requiring standard reliability. Due to its obsolete status, equivalent and substitute parts with improved specifications or active production status are necessary for new designs and ongoing system support.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution for the UFG1E331MPM1TD is determined by the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Lead Spacing: 0.197" (5.00 mm) (exact match required)
Case Diameter: 0.394" (10.00 mm) (exact match required)
Mounting Type: Through Hole, Radial (exact match required)
Polarization: Polar (exact match required)

Allowable Variation Parameters:

Voltage Rating: Equal to or greater than 25 V (higher voltage ratings provide backward compatibility)
Lifetime @ Temperature: Equal to or greater than 1000 Hrs @ 85°C (improved reliability acceptable)
Operating Temperature Range: Equal to or wider than -40°C ~ 85°C (extended range acceptable)
Ripple Current: Equal to or greater than 351 mA @ 120 Hz (higher current capacity acceptable)

Substitute parts are grouped into two categories: Direct Substitutes (same voltage rating) and Upgrade Substitutes (higher voltage ratings or improved thermal performance).

Parameter Comparison

Part Number	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Ripple Current @ 120 Hz	Product Status	Inventory
UFG1E331MPM1TD	UFG	330 µF	25 V	±20%	1000 Hrs @ 85°C	-40°C ~ 85°C	351 mA	Obsolete	2109 Pcs
UFW1J331MPD1TD	UFW	330 µF	63 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	650 mA	Not For New Designs	10763 Pcs
UBW1V331MPD1TD	UBW	330 µF	35 V	±20%	2000 Hrs @ 135°C	-55°C ~ 135°C	475 mA	Active	1055 Pcs
UKL1E331MPD1TD	UKL	330 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	490 mA	Not For New Designs	1199 Pcs
UKW1J331MPD1TD	UKW	330 µF	63 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	650 mA	Not For New Designs	2493 Pcs
UPJ1V331MPD1TD	UPJ	330 µF	35 V	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	810 mA	Not For New Designs	19802 Pcs
UPM1V331MPD1TD	UPM	330 µF	35 V	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	810 mA	Not For New Designs	1205 Pcs
UPS1H331MPD1TD	UPS	330 µF	50 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	575.1 mA	Not For New Designs	5094 Pcs
UPW1H331MPD1TD	UPW	330 µF	50 V	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	669.5 mA	Not For New Designs	3279 Pcs
UVK1J331MPD1TD	UVK	330 µF	63 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	710 mA	Not For New Designs	2284 Pcs
UVR1J331MPD1TD	UVR	330 µF	63 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	710 mA	Not For New Designs	6444 Pcs

Engineering Selection Recommendations

For Direct Replacement (Same Voltage Rating - 25 V):

UKL1E331MPD1TD is the primary equivalent for UFG1E331MPM1TD. Both maintain 25 V voltage rating and ±20% tolerance with identical mechanical dimensions and lead spacing. UKL1E331MPD1TD provides doubled lifetime (2000 Hrs @ 85°C versus 1000 Hrs @ 85°C) while maintaining the same operating temperature range. However, UKL1E331MPD1TD carries "Not For New Designs" status, limiting its use to legacy system support.

For Voltage Upgrade Substitutes (Higher Voltage Ratings):

Parts with voltage ratings above 25 V provide backward compatibility while offering enhanced voltage margin. Selection depends on application thermal requirements and available inventory:

35 V Rating: UBW1V331MPD1TD (Active status, automotive-grade, extended temperature to 135°C) or UPJ1V331MPD1TD / UPM1V331MPD1TD (5000 Hrs @ 105°C, extended temperature to 105°C)
50 V Rating: UPS1H331MPD1TD (2000 Hrs @ 105°C) or UPW1H331MPD1TD (5000 Hrs @ 105°C)
63 V Rating: UFW1J331MPD1TD, UKW1J331MPD1TD, UVK1J331MPD1TD, or UVR1J331MPD1TD (all 2000 Hrs @ 85°C)

Compliance Considerations:

All listed substitutes maintain ROHS3 compliance and identical HTSUS classification (8532.22.0020). UPM1V331MPD1TD includes AEC-Q200 automotive qualification and REACH Affected status. UBW1V331MPD1TD is designated for automotive applications with REACH Affected status.

Active Production Status:

UBW1V331MPD1TD is the only substitute with Active product status, making it the preferred choice for new designs requiring 35 V rating and extended thermal performance.

Frequently Asked Questions (FAQ)

Q: Can UFG1E331MPM1TD be replaced with a higher voltage-rated capacitor?

A: Yes. Higher voltage ratings (35 V, 50 V, 63 V) are electrically compatible substitutes. The circuit will operate correctly with a capacitor rated above the original 25 V specification. This provides additional voltage margin and is a standard engineering practice.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes maintain the original 25 V voltage rating (UKL1E331MPD1TD). Upgrade substitutes offer higher voltage ratings or improved thermal performance (35 V, 50 V, 63 V options). Both categories maintain identical capacitance, tolerance, mechanical dimensions, and lead spacing.

Q: Why do some substitutes have "Not For New Designs" status?

A: This designation indicates the manufacturer is phasing out the part but continues to supply existing inventory. These parts remain electrically and mechanically compatible but should not be selected for new product development. UBW1V331MPD1TD (Active status) is recommended for new designs.

Q: Are all substitutes physically interchangeable?

A: Yes. All listed substitutes share identical mechanical specifications: 0.394" (10.00 mm) case diameter, 0.866" (22.00 mm) maximum seated height, and 0.197" (5.00 mm) lead spacing. They mount identically in through-hole applications.

Q: Which substitute offers the best long-term reliability?

A: UPJ1V331MPD1TD and UPM1V331MPD1TD offer 5000-hour lifetime ratings at 105°C, compared to the original 1000-hour rating at 85°C. UPW1H331MPD1TD provides 5000-hour lifetime at 50 V rating. These represent the highest reliability options in the substitute list.

Q: What is the inventory status for substitutes?

A: UPJ1V331MPD1TD has the highest inventory (19802 Pcs), followed by UFW1J331MPD1TD (10763 Pcs) and UVR1J331MPD1TD (6444 Pcs). UBW1V331MPD1TD (Active status) has 1055 Pcs available.

Q: Can substitutes be mixed in the same circuit?

A: Yes, provided the circuit design accommodates the voltage rating of each capacitor. Mixing different voltage ratings is acceptable; however, using identical part numbers throughout a design simplifies procurement, inventory management, and future maintenance.

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