Nichicon UCD1K331MNJ1MS Equivalent & Substitute Parts

Part Overview

The Nichicon UCD1K331MNJ1MS is a 330 µF, 80 V aluminum electrolytic capacitor in surface mount radial can package, rated for 5000 hours at 105°C. This component is designed for automotive applications requiring AEC-Q200 qualification. The part is currently active in production with 1064 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the specified tolerances and ratings for this product category.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	80 V
Tolerance	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can - SMD
Mounting Type	Surface Mount
Size / Dimension	0.630" Dia (16.00mm)
Height - Seated (Max)	0.689" (17.50mm)
AEC-Q200 Rating	Yes
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the Nichicon UCD1K331MNJ1MS is determined by strict equivalence across the following parameters:

Electrical Parameters (Must Match):

Capacitance: 330 µF
Voltage Rating: 80 V
Tolerance: ±20%
Lifetime @ Temperature: 5000 Hrs @ 105°C
Operating Temperature Range: -55°C ~ 105°C
Polarization: Polar

Mechanical Parameters (Must Match):

Package Type: Radial, Can - SMD
Mounting Type: Surface Mount
Size / Dimension: 0.630" Dia (16.00mm)
Height - Seated (Max): 0.689" (17.50mm) or equivalent

Compliance Parameters (Must Match):

AEC-Q200 Rating: Yes
RoHS Status: ROHS3 Compliant

The Panasonic EEE-FK1K331AM meets all electrical and mechanical equivalence criteria. Dimensional variations within manufacturing tolerances and packaging format differences (Tape & Reel vs. standard packaging) do not preclude substitution when all core parameters align.

Parameter Comparison

Parameter	Nichicon UCD1K331MNJ1MS	Panasonic EEE-FK1K331AM	Match Status
Manufacturer	Nichicon	Panasonic Electronic Components	Different Manufacturer
Series	UCD	FK	Different Series
Capacitance	330 µF	330 µF	Equivalent
Voltage Rating	80 V	80 V	Equivalent
Tolerance	±20%	±20%	Equivalent
Lifetime @ Temperature	5000 Hrs @ 105°C	5000 Hrs @ 105°C	Equivalent
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 105°C	Equivalent
Polarization	Polar	Polar	Equivalent
AEC-Q200 Rating	Yes	Yes	Equivalent
Package Type	Radial, Can - SMD	Radial, Can - SMD	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Size / Dimension	0.630" Dia (16.00mm)	0.630" Dia (16.00mm)	Equivalent
Height - Seated (Max)	0.689" (17.50mm)	0.669" (17.00mm)	Within Tolerance
Surface Mount Land Size	0.673" L x 0.673" W (17.10mm x 17.10mm)	0.669" L x 0.669" W (17.00mm x 17.00mm)	Within Tolerance
Ripple Current @ 120 Hz	396.5 mA	594.8 mA	Panasonic Higher
Ripple Current @ 100 kHz	793 mA	793 mA	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Active	Active	Equivalent
Inventory	1064 Pcs	980 Pcs	Both In Stock

Engineering Selection Recommendations

Primary Selection: Nichicon UCD1K331MNJ1MS

The Nichicon UCD1K331MNJ1MS is the specified component with full production status and AEC-Q200 automotive qualification. This part is recommended for applications where the original design specification must be maintained without deviation.

Approved Substitute: Panasonic EEE-FK1K331AM

The Panasonic EEE-FK1K331AM is an approved substitute meeting all electrical and mechanical equivalence criteria. Both parts carry AEC-Q200 certification and ROHS3 compliance, confirming suitability for automotive applications. The Panasonic part demonstrates equivalent performance across all critical parameters including capacitance, voltage rating, temperature rating, and lifetime specification. Dimensional variations (height 17.00mm vs. 17.50mm, land size 17.00mm vs. 17.10mm) fall within standard manufacturing tolerances for surface mount radial can packages and do not impact PCB layout compatibility. The Panasonic part offers higher ripple current capability at 120 Hz (594.8 mA vs. 396.5 mA), providing additional design margin in low-frequency applications.

Both parts are active in production with adequate inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the Panasonic EEE-FK1K331AM be used as a direct replacement for the Nichicon UCD1K331MNJ1MS?

A: Yes. Both parts are electrically and mechanically equivalent with identical capacitance (330 µF), voltage rating (80 V), tolerance (±20%), lifetime specification (5000 Hrs @ 105°C), and operating temperature range (-55°C ~ 105°C). Both carry AEC-Q200 certification and ROHS3 compliance. Dimensional differences are within standard manufacturing tolerances for this package type.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by equivalence in: capacitance value, voltage rating, tolerance, lifetime at rated temperature, operating temperature range, polarization type, package type (Radial, Can - SMD), mounting type (Surface Mount), physical dimensions, and compliance certifications (AEC-Q200, ROHS3).

Q: Does the height difference between the two parts affect PCB compatibility?

A: No. The Panasonic part height of 17.00mm (0.669") is lower than the Nichicon specification of 17.50mm (0.689"), which is within standard manufacturing tolerances for surface mount radial can capacitors. This variation does not impact PCB layout or assembly compatibility.

Q: Are there differences in ripple current ratings between these parts?

A: The Panasonic EEE-FK1K331AM provides higher ripple current at 120 Hz (594.8 mA vs. 396.5 mA). Both parts are equivalent at 100 kHz (793 mA). The higher low-frequency ripple current capability of the Panasonic part provides additional design margin and does not restrict substitution.

Q: What is the packaging difference between these parts?

A: The Nichicon UCD1K331MNJ1MS is supplied in standard packaging. The Panasonic EEE-FK1K331AM is supplied in Tape & Reel (TR) format. Both are surface mount components with identical electrical and mechanical specifications. Packaging format does not affect component performance or PCB assembly compatibility.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the Nichicon UCD1K331MNJ1MS and Panasonic EEE-FK1K331AM carry AEC-Q200 qualification, confirming suitability for automotive applications. Both are ROHS3 compliant and rated for the full automotive temperature range (-55°C ~ 105°C).

Q: What is the current inventory status for these parts?

A: Nichicon UCD1K331MNJ1MS: 1064 units in stock. Panasonic EEE-FK1K331AM: 980 units in stock. Both parts are available for immediate procurement.

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