UFW1E331MPD1TD Equivalent & Substitute Parts

Part Overview

The UFW1E331MPD1TD is a 330 µF, 25 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component belongs to the UFW series and is classified as Not For New Designs. The part is rated for 2000 hours at 85°C and is commonly used in audio applications. Due to its obsolescence status and limited thermal performance, equivalent and substitute parts with improved specifications or active product status are available to ensure design continuity and long-term supply reliability.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Size / Dimension	0.394" Dia (10.00 mm)
Height - Seated (Max)	0.551" (14.00 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UFW1E331MPD1TD is determined by the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 25 V minimum (equal or higher voltage rating is acceptable)
Tolerance: ±20% (standard tolerance for this category)
Package Type: Radial, Can (mechanical compatibility)
Lead Spacing: 0.197" (5.00 mm) (PCB layout compatibility)
Physical Dimensions: 0.394" Dia × 0.551" Height (board space constraints)
Mounting Type: Through Hole (assembly process compatibility)
Polarization: Polar (circuit function requirement)

Performance Enhancement Parameters:

Lifetime @ Temperature: 2000 Hrs @ 85°C or higher (improved reliability)
Operating Temperature Range: -40°C ~ 85°C or extended range (thermal margin)
Ripple Current: 420 mA @ 120 Hz or higher (current handling capability)

Substitute parts are grouped into two categories: direct equivalents (same voltage rating) and upgrades (higher voltage rating or extended thermal performance). All substitutes maintain identical mechanical form factor and electrical interface compatibility.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ Temp	Operating Temp Range	Ripple Current @ 120 Hz	Product Status	Inventory
UFW1E331MPD1TD	Nichicon	UFW	330 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	420 mA	Not For New Designs	1611 Pcs
UKW1E331MPD1TD	Nichicon	UKW	330 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	420 mA	Not For New Designs	1373 Pcs
UKW1V331MPD1TD	Nichicon	UKW	330 µF	35 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	470 mA	Not For New Designs	1130 Pcs
UFW1V331MPD1TD	Nichicon	UFW	330 µF	35 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	470 mA	Not For New Designs	1523 Pcs
UHE1E331MPD6TD	Nichicon	UHE	330 µF	25 V	±20%	7000 Hrs @ 105°C	-40°C ~ 105°C	605.5 mA	Not For New Designs	4523 Pcs
UKA1V331MPD1TD	Nichicon	UKA	330 µF	35 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	350 mA	Not For New Designs	1087 Pcs
UPS1E331MPD1TD	Nichicon	UPS	330 µF	25 V	±20%	2000 Hrs @ 105°C	-55°C ~ 105°C	426 mA	Not For New Designs	2451 Pcs
UPW1E331MPD1TD	Nichicon	UPW	330 µF	25 V	±20%	5000 Hrs @ 105°C	-55°C ~ 105°C	494 mA	Not For New Designs	7950 Pcs
URS1V331MPD1TD	Nichicon	URS	330 µF	35 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	480 mA	Active	744 Pcs
UVK1V331MPD1TD	Nichicon	UVK	330 µF	35 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	490 mA	Not For New Designs	2107 Pcs
UVR1E331MPD1TD	Nichicon	UVR	330 µF	25 V	±20%	2000 Hrs @ 85°C	-40°C ~ 85°C	440 mA	Not For New Designs	7048 Pcs

Engineering Selection Recommendations

Direct Equivalent (Same Voltage Rating - 25 V):

UKW1E331MPD1TD and UVR1E331MPD1TD are direct electrical equivalents to UFW1E331MPD1TD with identical voltage rating, capacitance, and thermal specifications. Both maintain ROHS3 compliance and are suitable for direct substitution in existing designs without circuit modification.

Voltage Upgrade Options (35 V Rating):

UKW1V331MPD1TD, UFW1V331MPD1TD, URS1V331MPD1TD, and UVK1V331MPD1TD provide higher voltage rating (35 V) while maintaining the same capacitance and physical form factor. These parts are electrically compatible with 25 V circuit requirements and offer improved voltage margin. URS1V331MPD1TD is the only part with Active product status, providing the longest supply assurance.

Enhanced Thermal Performance Options:

UHE1E331MPD6TD offers extended lifetime (7000 Hrs @ 105°C) at the same 25 V rating, with higher ripple current capability (605.5 mA @ 120 Hz). This part is suitable for applications requiring improved thermal stability.

UPS1E331MPD1TD and UPW1E331MPD1TD provide extended operating temperature range (-55°C ~ 105°C) and improved lifetime ratings (2000 Hrs and 5000 Hrs @ 105°C respectively). UPW1E331MPD1TD offers the highest ripple current (494 mA @ 120 Hz) and longest thermal lifetime among 25 V options.

UKA1V331MPD1TD combines 35 V rating with extended temperature range (-55°C ~ 105°C) and 2000 Hrs @ 105°C lifetime, suitable for demanding thermal environments.

All substitute parts maintain ROHS3 compliance and identical mechanical compatibility with the original part.

Frequently Asked Questions (FAQ)

Q: Can I use a 35 V rated capacitor in place of a 25 V capacitor?

A: Yes. A higher voltage rating capacitor is electrically compatible with lower voltage circuit requirements. The 35 V parts (UKW1V331MPD1TD, UFW1V331MPD1TD, URS1V331MPD1TD, UVK1V331MPD1TD) can directly replace the 25 V UFW1E331MPD1TD without circuit modification. The higher voltage rating provides additional safety margin.

Q: What is the difference between "Not For New Designs" and "Active" product status?

A: "Not For New Designs" indicates the part is in mature/obsolescence phase with limited future availability. "Active" status (URS1V331MPD1TD) indicates ongoing production and long-term supply commitment. For new designs, Active status parts are preferred for supply chain reliability.

Q: Are all substitute parts mechanically identical to the original?

A: Yes. All listed substitute parts share identical physical dimensions (0.394" Dia × 0.551" Height), lead spacing

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