UPM1A331MPD1TD Equivalent & Substitute Parts

Part Overview

The UPM1A331MPD1TD is a 330 µF, 10 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is rated for 3000 hours at 105°C and is designed for automotive applications with AEC-Q200 compliance. The part is classified as "Not For New Designs," indicating it has been superseded. Identifying equivalent and substitute parts is necessary for ongoing maintenance, repair, and legacy system support where this capacitor remains in service.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ 105°C	3000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.138" (4.60 mm)
Case Diameter	0.315" (8.00 mm)
Height	0.512" (13.00 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UPM1A331MPD1TD is determined by the following criteria:

Direct Parametric Equivalents maintain identical capacitance (330 µF), voltage rating (10 V), tolerance (±20%), case dimensions (0.315" diameter, 0.512" height), lead spacing (0.138"), and through-hole mounting configuration. These parts are interchangeable without circuit modification.

Voltage-Upgraded Substitutes increase the rated voltage to 16 V or 25 V while maintaining all other electrical and mechanical parameters. These provide enhanced voltage margin and are suitable for applications where the original 10 V rating is adequate but higher voltage rating is preferred for reliability.

Series Variants from Nichicon (UPJ, UPA, UPW series) and Würth Elektronik (WCAP-ATLI, WCAP-ATLL series) share identical case geometry and lead spacing but may differ in impedance, ripple current handling, and lifetime specifications. Selection depends on application requirements for ripple current performance and thermal endurance.

Key Parameters for Substitution:

Capacitance: 330 µF (fixed)
Voltage Rating: 10 V minimum (upgrades to 16 V or 25 V acceptable)
Case Diameter: 0.315" (8.00 mm)
Lead Spacing: 0.138" (4.60 mm)
Height: 0.512" (13.00 mm) maximum
Mounting: Through Hole, Radial configuration
Polarization: Polar

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ 105°C	Impedance	Ripple Current @ 120 Hz	Product Status	Inventory
UPM1A331MPD1TD	Nichicon	UPM	330 µF	10 V	3000 Hrs	160 mOhms	350 mA	Not For New Designs	7800 Pcs
UPJ1A331MPD1TD	Nichicon	UPJ	330 µF	10 V	3000 Hrs	260 mOhms	350 mA	Not For New Designs	1603 Pcs
UPW1A331MPD1TD	Nichicon	UPW	330 µF	10 V	3000 Hrs	117 mOhms	360.75 mA	Not For New Designs	7868 Pcs
860080274009	Würth Elektronik	WCAP-ATLI	330 µF	10 V	3000 Hrs	110 mOhms	—	Active	742 Pcs
860160274017	Würth Elektronik	WCAP-ATLL	330 µF	10 V	7000 Hrs	450 mOhms	285.36 mA	Active	1496 Pcs
UPA1C331MPD1TD	Nichicon	UPA	330 µF	16 V	3000 Hrs	90 mOhms	409.5 mA	Active	806 Pcs
UPA1E331MPD1TD	Nichicon	UPA	330 µF	25 V	3000 Hrs	90 mOhms	409.5 mA	Active	5936 Pcs
UPW1C331MPD1TD	Nichicon	UPW	330 µF	16 V	3000 Hrs	117 mOhms	360.75 mA	Not For New Designs	39750 Pcs
UPW1C331MPD1TA	Nichicon	UPW	330 µF	16 V	3000 Hrs	117 mOhms	360.75 mA	Not For New Designs	2801 Pcs
860080374011	Würth Elektronik	WCAP-ATLI	330 µF	16 V	3000 Hrs	80 mOhms	—	Active	1782 Pcs
860160374020	Würth Elektronik	WCAP-ATLL	330 µF	16 V	4000 Hrs	370 mOhms	341.04 mA	Active	1602 Pcs

Engineering Selection Recommendations

For Direct Replacement (10 V Rating): UPW1A331MPD1TD is the preferred direct parametric equivalent. It maintains 330 µF capacitance and 10 V voltage rating with identical case geometry. The UPW series offers lower impedance (117 mOhms) compared to the original UPM series (160 mOhms), providing improved ripple current performance. This part is currently in active production status through Nichicon's UPW line and has substantial inventory availability (7868 Pcs).

860080274009 (Würth Elektronik WCAP-ATLI) provides an alternative from a different manufacturer with equivalent electrical characteristics and active product status. The Tape & Box packaging differs from the original Cut Tape format.

860160274017 (Würth Elektronik WCAP-ATLL) offers extended lifetime (7000 Hrs @ 105°C) compared to the standard 3000 Hrs specification, suitable for applications requiring enhanced thermal endurance. Higher impedance (450 mOhms) may impact ripple current performance in high-frequency applications.

For Voltage-Upgraded Substitutes (16 V Rating): UPA1C331MPD1TD is an active product from Nichicon with 16 V rating, lower impedance (90 mOhms), and higher ripple current capability (409.5 mA @ 120 Hz). This upgrade provides voltage margin while maintaining identical case dimensions and lead spacing.

UPW1C331MPD1TD offers the same 16 V upgrade with extensive inventory (39750 Pcs) and equivalent electrical performance to UPA1C331MPD1TD.

860080374011 (Würth Elektronik WCAP-ATLI) provides a 16 V rated alternative with active product status and the lowest impedance (80 mOhms) among 16 V options, delivering superior ripple current handling.

860160374020 (Würth Elektronik WCAP-ATLL) offers 16 V rating with extended 4000 Hrs lifetime and active product status.

For Maximum Voltage Margin (25 V Rating): UPA1E331MPD1TD provides the highest voltage rating (25 V) with active product status and the largest inventory (5936 Pcs). Identical case geometry and lead spacing ensure mechanical compatibility. This option is suitable for applications where maximum voltage headroom is required.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and EAR99 ECCN classification. The original UPM1A331MPD1TD carries AEC-Q200 automotive rating; substitute parts from Nichicon UPA and UPW series do not specify AEC-Q200 rating but are suitable for general-purpose applications. Würth Elektronik parts do not carry automotive certification but are ROHS3 compliant and suitable for general-purpose use.

Frequently Asked Questions (FAQ)

Q: Can UPW1A331MPD1TD be used as a direct replacement for UPM1A331MPD1TD?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (10 V), tolerance (±20%), case diameter (0.315"), lead spacing (0.138"), and height (0.512"). The UPW series offers improved impedance characteristics (117 mOhms vs. 160 mOhms), making it a superior direct replacement with enhanced ripple current performance.

Q: What is the difference between 10 V and 16 V rated substitutes?

A: The 16 V rated parts (UPA1C331MPD1TD, UPW1C331MPD1TD, 860080374011, 860160374020) provide higher voltage margin and are suitable for circuits where the original 10 V specification is adequate. These parts maintain identical case geometry and lead spacing, allowing direct mechanical substitution. The higher voltage rating does not affect circuit operation in 10 V applications but provides additional safety margin.

Q: Are Würth Elektronik parts compatible with the original Nichicon part?

A: Yes. Würth Elektronik WCAP-ATLI and WCAP-ATLL series maintain identical case dimensions (0.315" diameter, 0.512" height) and lead spacing (0.138"), ensuring mechanical and electrical compatibility. Both manufacturers' parts are ROHS3 compliant and suitable for through-hole mounting in identical PCB footprints.

Q: What does "Not For New Designs" mean for the original part?

A: This designation indicates the UPM1A331MPD1TD has been superseded by newer product lines. For new circuit designs, active products such as UPA1C331MPD1TD, UPA1E331MPD1TD, or Würth Elektronik alternatives are recommended. For existing systems and repairs, the part remains available and functional.

Q: How does impedance affect capacitor selection?

A: Impedance determines ripple current handling capability. Lower impedance (80–117 mOhms) provides better performance in high-frequency ripple current applications. The original UPM1A331MPD1TD has 160 mOhms impedance. Substitutes with lower impedance (UPW series at 117 mOhms, UPA series at 90 mOhms, Würth WCAP-ATLI at 80–110 mOhms) offer improved ripple current performance. Higher impedance substitutes (860160274017 at 450 mOhms, 860160374020 at 370 mOhms) are suitable for low-ripple applications.

Q: What is the difference between Cut Tape (CT) and Tape & Box (TB) packaging?

A: Cut Tape packaging (CT) provides individual component strips suitable for automated assembly. Tape & Box packaging (TB) includes components in tape format within a box, typically for bulk orders. Both formats contain identical components; packaging choice depends on assembly process requirements and order quantity.

Q: Can 860160274017 be used if extended lifetime is required?

A: Yes. The 860160274017 (Würth Elektronik WCAP-ATLL) offers 7000 Hrs @ 105°C lifetime compared to the standard 3000 Hrs specification. It maintains identical case geometry and lead spacing. However, its higher impedance (450 mOhms) and lower ripple current rating (285.36 mA @ 120 Hz) may limit performance in high-ripple applications. Evaluate ripple current requirements before selection.

Q: Are all substitute parts automotive-grade?

A: The original UPM1A331MPD1TD carries AEC-Q200 automotive certification. Nichicon UPA and UPW series substitutes do not specify AEC-Q200 rating but are suitable for general-purpose applications. Würth Elektronik WCAP-ATLI and WCAP-ATLL series do not carry automotive certification. For automotive applications requiring AEC-Q200 compliance, verify certification requirements with the system integrator before substitution.

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