Equivalent & Substitute Parts for UKL1A331MPD1TD

Part Overview

The UKL1A331MPD1TD is a 330 µF, 10 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in the product portfolio. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 2000 hours at 85°C, making it suitable for general-purpose applications requiring stable capacitance in standard operating environments.

Identifying equivalent and substitute parts is necessary due to the product's discontinued status for new designs. Equivalent substitutes maintain the same electrical and mechanical specifications, while upgraded alternatives offer enhanced performance characteristics such as extended lifetime, wider temperature ranges, or improved ripple current handling.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Case Diameter	0.394" (10.00 mm)
Height (Seated Max)	0.551" (14.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C to 85°C
Lifetime @ Temperature	2000 Hrs @ 85°C
Ripple Current @ 120 Hz	400 mA
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Mechanical Compatibility: All substitute parts maintain identical lead spacing (5.00 mm), case diameter (10.00 mm), and mounting type (Through Hole, Radial Can). Physical dimensions allow direct board-level replacement without layout modifications.

Electrical Core Specifications: All substitutes retain 330 µF capacitance and ±20% tolerance. Voltage ratings may be equal or higher; higher voltage ratings are acceptable as they provide backward compatibility with lower-voltage applications.

Thermal and Lifetime Characteristics: Substitutes are grouped by their operating temperature range and rated lifetime. Enhanced versions offer extended lifetimes (5000–7000 hours) and wider temperature ranges (-55°C to 135°C), providing improved reliability margins.

Compliance and Status: All substitutes maintain ROHS3 compliance. Product status varies between Active and Not For New Designs; Active parts are preferred for new designs.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Temp Range	Lifetime @ Temp	Ripple Current @ 120 Hz	Height (Max)	Status
UKL1A331MPD1TD	Nichicon	UKL	330 µF	10 V	±20%	-40°C ~ 85°C	2000 Hrs @ 85°C	400 mA	0.551" (14.00 mm)	Not For New Designs
UBT1A331MPD8TD	Nichicon	UBT	330 µF	10 V	±20%	-40°C ~ 125°C	5000 Hrs @ 125°C	310 mA	0.571" (14.50 mm)	Active
UBW1A331MPD1TD	Nichicon	UBW	330 µF	10 V	±20%	-55°C ~ 135°C	2000 Hrs @ 135°C	310 mA	0.571" (14.50 mm)	Active
UBW1C331MPD1TD	Nichicon	UBW	330 µF	16 V	±20%	-55°C ~ 135°C	2000 Hrs @ 135°C	340 mA	0.571" (14.50 mm)	Active
UFW1E331MPD1TD	Nichicon	UFW	330 µF	25 V	±20%	-40°C ~ 85°C	2000 Hrs @ 85°C	420 mA	0.551" (14.00 mm)	Not For New Designs
UFW1V331MPD1TD	Nichicon	UFW	330 µF	35 V	±20%	-40°C ~ 85°C	2000 Hrs @ 85°C	470 mA	0.551" (14.00 mm)	Not For New Designs
UHE1E331MPD6TD	Nichicon	UHE	330 µF	25 V	±20%	-40°C ~ 105°C	7000 Hrs @ 105°C	605.5 mA	0.551" (14.00 mm)	Not For New Designs
UKA1V331MPD1TD	Nichicon	UKA	330 µF	35 V	±20%	-55°C ~ 105°C	2000 Hrs @ 105°C	350 mA	0.551" (14.00 mm)	Not For New Designs
UKW1E331MPD1TD	Nichicon	UKW	330 µF	25 V	±20%	-40°C ~ 85°C	2000 Hrs @ 85°C	420 mA	0.551" (14.00 mm)	Not For New Designs
UKW1V331MPD1TD	Nichicon	UKW	330 µF	35 V	±20%	-40°C ~ 85°C	2000 Hrs @ 85°C	470 mA	0.551" (14.00 mm)	Not For New Designs
UPJ1C331MPD6TD	Nichicon	UPJ	330 µF	16 V	±20%	-55°C ~ 105°C	5000 Hrs @ 105°C	480 mA	0.551" (14.00 mm)	Not For New Designs

Engineering Selection Recommendations

For Active Product Status (Recommended for New Designs):

UBT1A331MPD8TD and UBW1A331MPD1TD are the only Active substitutes maintaining 10 V voltage rating. UBT1A331MPD8TD provides 5000-hour lifetime at 125°C with extended temperature range (-40°C to 125°C), suitable for automotive applications. UBW1A331MPD1TD extends the temperature range to -55°C to 135°C with 2000-hour lifetime at 135°C, also designated for automotive use. Both maintain ROHS3 compliance and identical mechanical footprint compatibility.

For Voltage Upgrade Scenarios:

UBW1C331MPD1TD (16 V, Active) provides higher voltage rating with automotive-grade reliability. This part is suitable when circuit design permits voltage margin increase without performance compromise.

For Legacy Design Maintenance:

When sustaining existing designs using UKL1A331MPD1TD, equivalent substitutes from the Not For New Designs category maintain identical electrical and thermal specifications. UFW1E331MPD1TD and UKW1E331MPD1TD both provide 25 V rating with matching 2000-hour lifetime at 85°C and identical physical dimensions. UPJ1C331MPD6TD offers enhanced 5000-hour lifetime at 105°C with 16 V rating and wider temperature range (-55°C to 105°C), providing improved reliability margins for legacy applications.

Frequently Asked Questions (FAQ)

Q: Can UBT1A331MPD8TD directly replace UKL1A331MPD1TD on existing PCBs?

A: Yes. Both parts maintain identical lead spacing (5.00 mm), case diameter (10.00 mm), and Through Hole mounting type. UBT1A331MPD8TD has a maximum seated height of 0.571" (14.50 mm) compared to 0.551" (14.00 mm) for UKL1A331MPD1TD. This 0.02" difference is within standard PCB clearance tolerances and does not prevent board-level substitution.

Q: What is the difference between 10 V and 16 V rated parts in this family?

A: Voltage rating indicates the maximum continuous DC voltage the capacitor can withstand. A 16 V part (UBW1C331MPD1TD) can be used in 10 V applications, providing additional voltage margin and typically improved reliability. However, physical dimensions and ripple current handling differ slightly between voltage ratings within the same series.

Q: Why do some substitutes have higher ripple current ratings?

A: Ripple current capacity depends on internal construction and thermal design. UHE1E331MPD6TD achieves 605.5 mA at 120 Hz due to its extended 7000-hour lifetime rating at 105°C, indicating enhanced internal construction. Higher ripple current capability provides design flexibility for applications with elevated AC current stress.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All parts listed maintain ROHS3 compliance. REACH status varies; UBT1A331MPD8TD, UBW1A331MPD1TD, UBW1C331MPD1TD, UHE1E331MPD6TD, and related automotive-grade parts show REACH Affected status, indicating they contain substances of concern but remain compliant under REACH regulations.

Q: Which substitute offers the widest operating temperature range?

A: UBW1A331MPD1TD and UBW1C331MPD1TD both operate from -55°C to 135°C, providing the widest temperature envelope. These parts are designated for automotive applications where extended temperature performance is required.

Q: Can I use a 25 V or 35 V rated part in a 10 V circuit?

A: Yes. Higher voltage ratings are backward compatible with lower-voltage applications. UFW1E331MPD1TD (25 V) and UFW1V331MPD1TD (35 V) can substitute in 10 V circuits, providing voltage safety margin. However, verify that physical height differences (0.551" for these parts) do not conflict with PCB clearance constraints.

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