UKT1C331MPD Equivalent & Substitute Parts

Part Overview

The UKT1C331MPD is a 330 µF, 16 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Finding equivalent and substitute parts is necessary to support existing designs, maintain inventory compatibility, and ensure continued availability for production and repair applications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can
Lead Spacing	0.138" (4.60 mm)
Size / Dimension	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.453" (11.50 mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the UKT1C331MPD is determined by the following critical parameters:

Capacitance: Must be 330 µF (exact match required)
Voltage Rating: Must be ≥ 16 V (equal or higher voltage rating acceptable)
Tolerance: ±20% (standard tolerance match)
Package Type: Radial, Can (physical form factor must match)
Lead Spacing: 0.138" (4.60 mm) (PCB compatibility requirement)
Physical Dimensions: 0.315" Dia (8.00 mm) and Height 0.453" (11.50 mm) (board space constraint)
Mounting Type: Through Hole (assembly process compatibility)
Polarization: Polar (electrical circuit requirement)
Operating Temperature Range: -55°C ~ 105°C (environmental specification)
RoHS Status: ROHS3 Compliant (regulatory requirement)

Substitute parts may differ in lifetime rating, ripple current specifications, and product status, provided all critical parameters remain compatible.

Parameter Comparison

Parameter	UKT1C331MPD	UKT1E331MPD	UPW1C331MPD	EEU-FC1C331
Manufacturer	Nichicon	Nichicon	Nichicon	Panasonic Electronic Components
Capacitance	330 µF	330 µF	330 µF	330 µF
Voltage Rating	16 V	25 V	16 V	16 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ 105°C	1000 Hrs	1000 Hrs	3000 Hrs	2000 Hrs
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Polarization	Polar	Polar	Polar	Polar
Package Type	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.138" (4.60 mm)	0.138" (4.60 mm)	0.138" (4.60 mm)	0.138" (4.60 mm)
Size / Dimension	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)	0.315" Dia (8.00 mm)
Height - Seated (Max)	0.453" (11.50 mm)	0.453" (11.50 mm)	0.453" (11.50 mm)	0.453" (11.50 mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Not For New Designs	Not For New Designs	Active

Engineering Selection Recommendations

UKT1E331MPD (Nichicon): This part maintains identical physical dimensions and lead spacing as the UKT1C331MPD. The voltage rating is increased to 25 V, providing higher voltage margin in the circuit. Both parts share the same series designation (UKT) and are classified as Not For New Designs. Selection of this part is appropriate when higher voltage headroom is beneficial and inventory of the original part is depleted.

UPW1C331MPD (Nichicon): This substitute offers extended lifetime of 3000 Hrs @ 105°C compared to the original 1000 Hrs, representing a threefold improvement in thermal endurance. Physical compatibility is maintained across all critical dimensions and lead spacing. The part is classified as Not For New Designs. This option is suitable for applications requiring enhanced reliability and extended operational life.

EEU-FC1C331 (Panasonic Electronic Components): This part is the only substitute with Active product status, indicating current manufacturing and long-term availability. It maintains all critical physical parameters and electrical specifications matching the UKT1C331MPD. The part carries AEC-Q200 automotive qualification and offers 2000 Hrs lifetime @ 105°C. This option provides the strongest long-term supply chain assurance and is recommended for new production runs and designs requiring extended component availability.

Frequently Asked Questions (FAQ)

Q: Can UKT1E331MPD replace UKT1C331MPD in existing designs?

A: Yes. The UKT1E331MPD is a direct physical substitute with identical package dimensions, lead spacing, and capacitance. The increased voltage rating (25 V vs. 16 V) is compatible with circuits designed for 16 V operation, as the component will operate within its rated specifications.

Q: What is the primary difference between UPW1C331MPD and the original UKT1C331MPD?

A: Both parts share identical electrical ratings (330 µF, 16 V, ±20%) and physical dimensions. The UPW1C331MPD provides extended lifetime of 3000 Hrs @ 105°C versus 1000 Hrs for the original part. This makes it suitable for applications with higher thermal stress or longer operational requirements.

Q: Why is EEU-FC1C331 recommended over other substitutes?

A: The EEU-FC1C331 is the only substitute with Active product status, ensuring continued manufacturing and availability. It meets all physical and electrical compatibility requirements and carries AEC-Q200 automotive qualification. For applications requiring long-term supply chain stability, this part is the preferred choice.

Q: Are all substitutes through-hole mounted with identical lead spacing?

A: Yes. All substitute parts listed maintain the same through-hole mounting type and 0.138" (4.60 mm) lead spacing as the UKT1C331MPD, ensuring direct PCB compatibility without layout modifications.

Q: Do all substitutes meet RoHS3 compliance?

A: Yes. All parts listed, including the original UKT1C331MPD and all substitutes, are ROHS3 Compliant, meeting current environmental and regulatory requirements.

Q: Can a 25 V rated capacitor (UKT1E331MPD) be used in a circuit designed for 16 V?

A: Yes. A capacitor with a higher voltage rating operates safely in circuits with lower voltage requirements. The 25 V rating provides additional voltage margin and does not affect circuit performance when used in a 16 V application.

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