Nichicon UPS1C331MPD Equivalent & Substitute Parts

Part Overview

The Nichicon UPS1C331MPD is a 330 µF, 16 V aluminum electrolytic capacitor in radial configuration with a 2000-hour lifetime at 105°C. This component is classified as Not For New Designs, indicating it has been superseded in Nichicon's product portfolio. Finding equivalent or substitute parts is necessary for maintenance, repair, and legacy system support where original stock is unavailable or depleted.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Lead Spacing	0.138" (4.60mm)
Case Diameter	0.315" (8.00mm)
Height	0.512" (13.00mm)
Mounting Type	Through Hole
Package	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UPS1C331MPD is determined by the following criteria:

Primary Substitution Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 16 V minimum (equal or higher acceptable)
Tolerance: ±20% (matching or tighter acceptable)
Polarization: Polar (must match)
Lead Spacing: 0.138" (4.60mm) (exact match for direct PCB compatibility)
Case Diameter: 0.315" (8.00mm) (exact match for mechanical fit)
Height: 0.512" (13.00mm) maximum (equal or lower acceptable for space constraints)
Mounting Type: Through Hole (must match)
Package: Radial, Can (must match)

Secondary Considerations:

Lifetime rating (higher values provide improved reliability)
Ripple current capability (higher values indicate better performance margin)
Impedance (lower values indicate better high-frequency performance)
Product Status (Active status preferred for long-term availability)
RoHS Compliance (ROHS3 required for regulatory alignment)

Parts are grouped into three categories: Direct equivalents (identical specifications and packaging), upgrades (improved performance characteristics), and similar alternatives (compatible but with dimensional or performance variations).

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ 105°C	Lead Spacing	Height	Impedance	Product Status	Packaging
UPS1C331MPD	Nichicon	UPS	330 µF	16 V	2000 Hrs	0.138" (4.60mm)	0.512" (13.00mm)	280 mOhms	Not For New Designs	Bulk
UPS1C331MPD1TD	Nichicon	UPS	330 µF	16 V	2000 Hrs	0.138" (4.60mm)	0.512" (13.00mm)	280 mOhms	Not For New Designs	Cut Tape (CT)
UKA1C331MPD	Nichicon	UKA	330 µF	16 V	2000 Hrs	0.138" (4.60mm)	0.512" (13.00mm)	—	Not For New Designs	Bulk
UKA1E331MPD	Nichicon	UKA	330 µF	25 V	2000 Hrs	0.138" (4.60mm)	0.512" (13.00mm)	—	Not For New Designs	Bulk
UPA1C331MPD	Nichicon	UPA	330 µF	16 V	3000 Hrs	0.138" (4.60mm)	0.512" (13.00mm)	90 mOhms	Active	Bulk
UPA1E331MPD	Nichicon	UPA	330 µF	25 V	3000 Hrs	0.138" (4.60mm)	0.512" (13.00mm)	90 mOhms	Active	Bulk
UPJ1C331MPD	Nichicon	UPJ	330 µF	16 V	3000 Hrs	0.138" (4.60mm)	0.630" (16.00mm)	180 mOhms	Not For New Designs	Bulk
UPJ1C331MPD6	Nichicon	UPJ	330 µF	16 V	5000 Hrs	0.197" (5.00mm)	0.551" (14.00mm)	180 mOhms	Not For New Designs	Bulk
UPM1C331MPD	Nichicon	UPM	330 µF	16 V	3000 Hrs	0.138" (4.60mm)	0.650" (16.50mm)	120 mOhms	Not For New Designs	Bulk
UPM1C331MPD6	Nichicon	UPM	330 µF	16 V	5000 Hrs	0.197" (5.00mm)	0.571" (14.50mm)	120 mOhms	Not For New Designs	Bulk
UPW1C331MPD	Nichicon	UPW	330 µF	16 V	3000 Hrs	0.138" (4.60mm)	0.453" (11.50mm)	117 mOhms	Not For New Designs	Bulk

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical and Mechanical Specifications):

UPS1C331MPD1TD is a direct substitute with identical electrical performance and mechanical dimensions. The only difference is packaging format (Cut Tape versus Bulk). This part is suitable for applications requiring the same specifications with alternative packaging logistics.

Recommended Upgrades (Active Product Status):

UPA1C331MPD and UPA1E331MPD are the preferred long-term alternatives. Both are classified as Active products, ensuring continued availability and manufacturing support. UPA1C331MPD matches the 16 V rating with improved specifications: 3000-hour lifetime (50% longer than UPS1C331MPD), lower impedance (90 mOhms versus 280 mOhms), and higher ripple current capability. UPA1E331MPD provides the same improvements with a 25 V rating, offering additional voltage margin for applications with variable supply conditions.

Voltage-Upgraded Alternatives:

UKA1E331MPD and UPA1E331MPD both provide 25 V rating while maintaining 330 µF capacitance and identical mechanical dimensions. These are suitable for applications where the original 16 V specification can accommodate higher voltage ratings without circuit modification.

Space-Constrained Applications:

UPW1C331MPD offers the lowest profile at 0.453" height (11.50mm) while maintaining 330 µF, 16 V specifications and 3000-hour lifetime. This part is applicable only where vertical space is limited and the reduced height does not compromise ripple current requirements.

Extended Lifetime Applications:

UPJ1C331MPD6 and UPM1C331MPD6 provide 5000-hour lifetime ratings. These parts require PCB layout modification due to increased lead spacing (0.197" versus 0.138") and larger case diameter (0.394" versus 0.315"). UPM1C331MPD6 includes AEC-Q200 automotive qualification, suitable for automotive and harsh-environment applications.

Compliance Verification:

All substitute parts maintain ROHS3 compliance and operate across the -55°C to 105°C temperature range. Parts designated as Active (UPA series) are recommended for new procurement to ensure long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can UPS1C331MPD1TD replace UPS1C331MPD directly on the PCB?

A: Yes. UPS1C331MPD1TD is electrically and mechanically identical to UPS1C331MPD. The difference is packaging format (Cut Tape versus Bulk). Both have identical lead spacing (0.138"), case diameter (0.315"), and height (0.512"), requiring no PCB layout changes.

Q: What is the primary advantage of upgrading to UPA1C331MPD?

A: UPA1C331MPD offers three improvements: Active product status (ensuring long-term availability), 50% longer lifetime (3000 hours versus 2000 hours at 105°C), and significantly lower impedance (90 mOhms versus 280 mOhms). The lower impedance provides better high-frequency performance and reduced voltage ripple. Mechanical dimensions and electrical ratings remain identical.

Q: Can I use UPA1E331MPD (25 V) in place of UPS1C331MPD (16 V)?

A: Yes, if the circuit design permits. UPA1E331MPD has identical mechanical dimensions and capacitance (330 µF) but higher voltage rating (25 V). Higher voltage-rated capacitors are electrically compatible in lower-voltage applications. Verify that the PCB layout and circuit topology do not require the specific 16 V rating.

Q: Why do UPJ1C331MPD6 and UPM1C331MPD6 have different lead spacing?

A: These parts have increased lead spacing (0.197" versus 0.138") to accommodate larger internal construction required for 5000-hour lifetime rating. Direct PCB substitution is not possible without layout modification. These parts are suitable only for new designs or rework where PCB drilling can be adjusted.

Q: Which substitute part should I select for automotive applications?

A: UPM1C331MPD6 is qualified to AEC-Q200 automotive standard with 5000-hour lifetime. However, it requires PCB layout modification due to different lead spacing (0.197") and case diameter (0.394"). For direct replacement without layout changes, UPA1C331MPD is the preferred alternative, though it does not carry automotive qualification.

Q: Is UPW1C331MPD suitable for high-ripple-current applications?

A: UPW1C331MPD has lower ripple current capability (360.75 mA @ 120 Hz) compared to UPS1C331MPD (291.1 mA @ 120 Hz). While the absolute value is higher, the impedance (117 mOhms) is lower, indicating better performance at high frequencies. Verify ripple current requirements against the specific application before selection.

Q: What does "Not For New Designs" mean for UPS1C331MPD?

A: This designation indicates the part has been superseded in Nichicon's product line and is no longer recommended for new circuit designs. Existing stock remains available for maintenance and repair. For new designs, UPA1C331MPD (Active status) is the recommended alternative.

Q: Can I mix UPS1C331MPD and UPA1C331MPD in the same circuit?

A: Yes, both parts are electrically compatible with identical voltage, capacitance, and tolerance specifications. However, mixing parts with different impedance characteristics (280 mOhms versus 90 mOhms) may result in uneven current distribution in parallel configurations. For critical applications, use parts from the same series.

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