Equivalent & Substitute Parts for UPW1C331MPD1TD

Part Overview

The UPW1C331MPD1TD is a 330 µF, 16 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 This component is classified as "Not For New Designs," indicating it has been superseded in the product lifecycle. Finding equivalent or substitute parts is necessary for maintenance, repair, and legacy system support where the original part may no longer be readily available or where design updates are required.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Polarization	Polar
Package Type	Radial, Can
Mounting Type	Through Hole
Lead Spacing	0.138" (4.60 mm)
Size / Dimension	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.512" (13.00 mm)
Operating Temperature	-55°C ~ 105°C
Lifetime @ Temp.	3000 Hrs @ 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the UPW1C331MPD1TD is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 16 V minimum (equal or higher voltage rating is acceptable)
Tolerance: ±20% (matching tolerance class)
Polarization: Polar (electrolytic type)
Package: Radial, Can configuration
Mounting: Through Hole
Lead Spacing: 0.138" (4.60 mm)
Physical Dimensions: 0.315" Dia (8.00 mm), Height 0.512" (13.00 mm) maximum
Operating Temperature Range: -55°C ~ 105°C
RoHS Compliance: ROHS3 Compliant

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts matching all electrical specifications (330 µF, 16 V, ±20%) with identical physical footprint and lead spacing. These parts are direct replacements with no circuit modifications required.

Upgrade Substitutes: Parts with improved specifications (higher voltage rating or extended lifetime) that maintain backward compatibility through identical mechanical and electrical interfaces.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage Rating	Lifetime @ 105°C	Impedance	Ripple Current @ 120 Hz	Product Status	Inventory (Pcs)
UPW1C331MPD1TD	Nichicon	UPW	330 µF	16 V	3000 Hrs	117 mOhms	360.75 mA	Not For New Designs	39,750
UPA1C331MPD1TD	Nichicon	UPA	330 µF	16 V	3000 Hrs	90 mOhms	409.5 mA	Active	806
UPA1C331MPD1TA	Nichicon	UPA	330 µF	16 V	3000 Hrs	90 mOhms	409.5 mA	Active	738
UPW1C331MPD1TA	Nichicon	UPW	330 µF	16 V	3000 Hrs	117 mOhms	360.75 mA	Not For New Designs	2,801
UPA1E331MPD1TD	Nichicon	UPA	330 µF	25 V	3000 Hrs	90 mOhms	409.5 mA	Active	5,936
860080374011	Würth Elektronik	WCAP-ATLI	330 µF	16 V	3000 Hrs	80 mOhms	—	Active	1,782
860160374020	Würth Elektronik	WCAP-ATLL	330 µF	16 V	4000 Hrs	370 mOhms	341.04 mA	Active	1,602

Engineering Selection Recommendations

For New Designs: Select UPA1C331MPD1TD or UPA1C331MPD1TA (Nichicon, Active status). Both parts offer improved impedance characteristics (90 mOhms versus 117 mOhms) and higher ripple current capability (409.5 mA versus 360.75 mA) compared to the original UPW1C331MPD1TD, while maintaining identical electrical ratings and physical footprint. Active product status ensures long-term availability and supply chain stability.

For Maintenance and Repair of Existing Systems: UPA1C331MPD1TD and UPA1C331MPD1TA provide direct electrical and mechanical compatibility with the UPW1C331MPD1TD. The UPW series parts (UPW1C331MPD1TA) remain available as legacy alternatives but carry "Not For New Designs" status.

For Enhanced Reliability Requirements: UPA1E331MPD1TD (25 V rating) provides voltage derating margin while maintaining identical capacitance and physical dimensions. This upgrade is suitable for applications requiring additional safety margin or operating in elevated voltage environments.

For Extended Lifetime Applications: 860160374020 (Würth Elektronik WCAP-ATLL series) offers 4000 Hrs @ 105°C lifetime versus 3000 Hrs, providing extended operational life in high-temperature environments. Note: This part exhibits higher impedance (370 mOhms) and lower ripple current capability at low frequency (341.04 mA @ 120 Hz).

For Optimized High-Frequency Performance: 860080374011 (Würth Elektronik WCAP-ATLI series) delivers the lowest impedance (80 mOhms) and highest high-frequency ripple current (740 mA @ 100 kHz), making it suitable for applications with significant AC ripple content at higher frequencies.

Frequently Asked Questions (FAQ)

Q: Can UPA1E331MPD1TD (25 V) be used as a direct replacement for UPW1C331MPD1TD (16 V)?

A: Yes. The UPA1E331MPD1TD maintains identical capacitance (330 µF), tolerance (±20%), physical dimensions, lead spacing, and mounting type. The higher voltage rating (25 V versus 16 V) provides backward compatibility and does not affect circuit operation in 16 V applications. This substitution is valid for all circuit topologies where the original 16 V rating was specified.

Q: What is the difference between Nichicon UPA and UPW series parts?

A: Both series are aluminum electrolytic capacitors with identical electrical ratings and physical footprints for the specified part numbers. The UPW series (original part) is classified as "Not For New Designs," while the UPA series represents the active product line. The UPA series exhibits lower impedance (90 mOhms versus 117 mOhms) and higher ripple current capability (409.5 mA versus 360.75 mA @ 120 Hz).

Q: Are Würth Elektronik parts (860080374011, 860160374020) compatible with the original Nichicon UPW1C331MPD1TD?

A: Yes. Both Würth Elektronik parts maintain the required electrical specifications (330 µF, 16 V, ±20% tolerance) and identical physical footprint (0.315" Dia, 0.512" Height, 0.138" lead spacing). They are mechanically and electrically interchangeable. However, impedance and ripple current characteristics differ; verify these parameters against circuit requirements before selection.

Q: What is the significance of "Not For New Designs" status?

A: This designation indicates the part has been superseded in the manufacturer's product lifecycle. While the UPW1C331MPD1TD remains available in inventory (39,750 Pcs), it is no longer recommended for new circuit designs. Active alternatives (UPA series) should be selected for new applications to ensure long-term supply chain continuity and access to technical support.

Q: Can I mix different substitute parts in the same circuit board?

A: Yes, provided all selected parts meet the circuit's electrical requirements (330 µF, 16 V minimum, ±20% tolerance) and physical constraints (lead spacing, height, diameter). However, for consistency in manufacturing and field service, using a single part number across identical positions is recommended.

Q: How do impedance differences affect circuit performance?

A: Impedance affects ripple voltage and transient response. Lower impedance (80–90 mOhms) reduces ripple voltage and improves transient response, beneficial for noise-sensitive applications. Higher impedance (117–370 mOhms) may increase ripple voltage but does not affect DC capacitance or voltage rating. Verify impedance compatibility with circuit filtering requirements.

Q: What is the difference between ripple current at 120 Hz and 100 kHz?

A: Ripple current ratings specify the maximum AC current the capacitor can handle at specific frequencies. Low-frequency ripple (120 Hz) is typical in rectified AC power supplies. High-frequency ripple (100 kHz) is relevant in switching power supplies and high-frequency switching circuits. Select parts based on the dominant ripple frequency in your application.

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