Equivalent & Substitute Parts for UPS1A331MPD1TD

Part Overview

The UPS1A331MPD1TD 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 This component is classified as Not For New Designs, indicating it has been superseded in the product lifecycle. The UPS series delivers 2000 hours of operational life at 105°C and is suitable for general-purpose applications requiring through-hole mounting in standard 0.138" (4.60 mm) lead spacing.

Equivalent and substitute parts are necessary when the UPS1A331MPD1TD reaches end-of-life status, inventory depletion, or when design requirements demand enhanced performance characteristics such as extended lifetime, improved ripple current handling, or higher voltage ratings.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.138" (4.60 mm)
Size / Diameter	0.315" (8.00 mm)
Height - Seated (Max)	0.512" (13.00 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UPS1A331MPD1TD is determined by the following criteria:

Primary Compatibility Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.138" (4.60 mm) (exact match required)
Physical Dimensions: 0.315" Dia × 0.512" Height (exact match required)
Mounting Type: Through Hole (exact match required)

Performance Enhancement Parameters (allow substitution):

Voltage Rating: 10 V or higher
Lifetime @ 105°C: 2000 Hrs or longer
Operating Temperature Range: -55°C ~ 105°C (exact match required)
Ripple Current: Equal to or greater than specified values
Impedance: Lower values indicate improved performance

Substitute parts are grouped into two categories: direct equivalents (same voltage rating) and upgrades (higher voltage ratings or extended lifetime).

Parameter Comparison

Part Number	Series	Voltage	Lifetime @ 105°C	Ripple Current @ 120 Hz	Impedance	Product Status	Applications
UPS1A331MPD1TD	UPS	10 V	2000 Hrs	291.1 mA	280 mOhms	Not For New Designs	General Purpose
UPJ1A331MPD1TD	UPJ	10 V	3000 Hrs	350 mA	260 mOhms	Not For New Designs	General Purpose
UPM1A331MPD1TD	UPM	10 V	3000 Hrs	350 mA	160 mOhms	Not For New Designs	Automotive
UPW1A331MPD1TD	UPW	10 V	3000 Hrs	360.75 mA	117 mOhms	Not For New Designs	General Purpose
UKA1A331MPD1TD	UKA	10 V	2000 Hrs	240 mA	—	Not For New Designs	Audio
UPA1C331MPD1TD	UPA	16 V	3000 Hrs	409.5 mA	90 mOhms	Active	General Purpose
UPA1E331MPD1TD	UPA	25 V	3000 Hrs	409.5 mA	90 mOhms	Active	General Purpose
UKA1C331MPD1TD	UKA	16 V	2000 Hrs	265 mA	—	Not For New Designs	Audio
UKA1E331MPD1TD	UKA	25 V	2000 Hrs	290 mA	—	Not For New Designs	Audio
UPS1C331MPD1TD	UPS	16 V	2000 Hrs	291.1 mA	280 mOhms	Not For New Designs	General Purpose
UPW1C331MPD1TA	UPW	16 V	3000 Hrs	360.75 mA	117 mOhms	Not For New Designs	General Purpose

Engineering Selection Recommendations

Direct Equivalents (10 V Rating): UPJ1A331MPD1TD, UPM1A331MPD1TD, and UPW1A331MPD1TD maintain the 10 V voltage specification while offering extended 3000-hour lifetime at 105°C. These parts are pin-compatible and mechanically identical to the UPS1A331MPD1TD. UPW1A331MPD1TD provides the lowest impedance (117 mOhms) among 10 V options, improving ripple current performance.

Voltage-Upgraded Substitutes (16 V and 25 V Ratings): UPA1C331MPD1TD (16 V, Active status) and UPA1E331MPD1TD (25 V, Active status) are recommended for new designs due to their Active product status and superior electrical characteristics. Both deliver 3000-hour lifetime and 90 mOhms impedance. These higher voltage ratings provide design margin and are suitable for applications where the circuit voltage may fluctuate or where future design revisions require increased headroom.

UPS1C331MPD1TD (16 V) and UPW1C331MPD1TA (16 V) offer intermediate voltage upgrades while maintaining mechanical compatibility.

Application-Specific Alternatives: UKA series parts (UKA1A331MPD1TD, UKA1C331MPD1TD, UKA1E331MPD1TD) are designated for audio applications. UPM1A331MPD1TD carries AEC-Q200 automotive qualification and is suitable for automotive-grade designs.

Product Status Consideration: UPA1C331MPD1TD and UPA1E331MPD1TD are the only Active-status parts in this substitution group, making them the preferred choice for new designs requiring long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can I use a higher voltage-rated capacitor as a direct replacement? A: Yes. A 16 V or 25 V rated capacitor maintains full compatibility with a 10 V circuit while providing additional voltage margin. The physical dimensions, lead spacing, capacitance, and tolerance remain identical. Higher voltage ratings do not degrade performance in lower-voltage applications.

Q: What is the difference between UPS, UPJ, UPM, UPW, UKA, and UPA series? A: These represent different product lines within Nichicon's aluminum electrolytic capacitor portfolio. UPS and UPS1C are legacy series (Not For New Designs). UPJ, UPM, UPW offer extended 3000-hour lifetime. UPA series is Active status with superior electrical characteristics (lower impedance, higher ripple current). UKA is optimized for audio applications. Selection depends on product lifecycle status, application requirements, and design timeline.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 Compliant status, meeting environmental and regulatory requirements.

Q: What does "Not For New Designs" mean? A: This designation indicates the part has been superseded and is no longer recommended for new product development. Existing inventory may remain available, but long-term supply is not guaranteed. New designs should specify Active-status alternatives such as UPA1C331MPD1TD or UPA1E331MPD1TD.

Q: Can I substitute UPS1A331MPD1TD with UKA1A331MPD1TD? A: Mechanically and electrically, yes. Both are 330 µF, 10 V, radial, through-hole capacitors with identical physical dimensions and lead spacing. However, UKA1A331MPD1TD is designated for audio applications, while UPS1A331MPD1TD is general-purpose. Application-specific optimization may affect performance in non-audio circuits.

Q: Which substitute offers the best ripple current performance? A: UPA1E331MPD1TD (25 V) and UPA1C331MPD1TD (16 V) both deliver 409.5 mA ripple current at 120 Hz with 90 mOhms impedance, representing the highest performance among available substitutes.

Q: Is the height difference between UPS1A331MPD1TD (0.512") and UPJ1A331MPD1TD (0.492") significant? A: No. The 0.020" (0.5 mm) difference is within standard PCB layout tolerance for through-hole components and does not affect mechanical compatibility or electrical performance.

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