380LX331M315K022 Equivalent & Substitute Parts Reference

Part Overview

The 380LX331M315K022 is a 330 µF, 315 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is classified as Active product status and is designed for general-purpose applications requiring stable capacitance and reliable performance across industrial temperature ranges. The part is ROHS3 compliant and REACH unaffected, meeting modern environmental standards.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed tolerance specifications. Substitution becomes necessary due to inventory availability, supply chain optimization, or application-specific performance requirements while maintaining functional compatibility.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Tolerance	±20%	-
Voltage - Rated	315	V
ESR @ 120Hz	603	mOhm
Lifetime @ Temperature	3000 Hrs @ 85°C	-
Operating Temperature Range	-25°C ~ 85°C	-
Lead Spacing	10.00	mm
Diameter	30.00	mm
Height - Seated (Max)	32.00	mm
Package Type	Radial, Can - Snap-In	-
Mounting Type	Through Hole	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the 380LX331M315K022 are qualified based on the following mandatory parameters:

Core Electrical Parameters (Must Match):

Capacitance: 330 µF (±20% tolerance band)
Polarization: Polar
Package/Case: Radial, Can - Snap-In
Mounting Type: Through Hole

Mechanical Parameters (Must Match):

Lead Spacing: 10.00 mm
Diameter: 30.00 mm
Height - Seated (Max): 32.00 mm

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

Allowable Variations:

Voltage Rating: Equal to or greater than 315 V
Operating Temperature Range: Equal to or greater than the original range
Lifetime @ Temperature: Equal to or greater than 3000 hours
ESR: Lower values are acceptable; higher values require engineering evaluation

Three substitute parts meet these criteria with variations in voltage rating and thermal performance characteristics.

Parameter Comparison

Parameter	380LX331M315K022 (CDE)	B43642C9337M000 (EPCOS - TDK)	450MXK330MEFCFA30X30 (Rubycon)	LGU2F331MELB (Nichicon)
Manufacturer	Cornell Dubilier Electronics	EPCOS - TDK Electronics	Rubycon	Nichicon
Capacitance	330 µF	330 µF	330 µF	330 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage - Rated	315 V	400 V	450 V	315 V
ESR @ Reference Frequency	603 mOhm @ 120Hz	270 mOhm @ 100Hz	Not Specified	Not Specified
Lifetime @ Temperature	3000 Hrs @ 85°C	3000 Hrs @ 105°C	3000 Hrs @ 105°C	3000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 85°C	-40°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C
Ripple Current @ 120Hz	1.8 A	1.51 A	1.58 A	1.33 A
Lead Spacing	10.00 mm	10.00 mm	10.00 mm	10.00 mm
Diameter	30.00 mm	30.00 mm	30.00 mm	30.00 mm
Height - Seated (Max)	32.00 mm	32.00 mm	32.00 mm	32.00 mm
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All three substitute parts maintain Active product status and full compliance with ROHS3 and REACH requirements, ensuring regulatory compatibility with the original 380LX331M315K022.

B43642C9337M000 (EPCOS - TDK Electronics): This substitute provides a voltage rating upgrade to 400 V with improved ESR performance (270 mOhm @ 100Hz versus 603 mOhm @ 120Hz). The extended operating temperature range (-40°C ~ 105°C) and higher temperature lifetime rating (3000 Hrs @ 105°C) support applications requiring enhanced thermal stability. Mechanical dimensions and lead spacing are identical.

450MXK330MEFCFA30X30 (Rubycon): This substitute offers the highest voltage rating at 450 V, providing maximum voltage margin for applications with potential supply fluctuations. Operating temperature range extends to 105°C maximum, and lifetime rating is 3000 Hrs @ 105°C. Mechanical compatibility is maintained with identical lead spacing and package dimensions.

LGU2F331MELB (Nichicon): This substitute maintains the original 315 V voltage rating while providing extended operating temperature capability to 105°C and corresponding lifetime rating of 3000 Hrs @ 105°C. Mechanical dimensions and lead spacing are identical to the original part. This option is suitable for direct replacement in applications where voltage rating requirements remain unchanged.

All substitutes are electrically and mechanically compatible with the original 380LX331M315K022 within the specified parameter allowances.

Frequently Asked Questions (FAQ)

Q: Can the B43642C9337M000 be used in place of the 380LX331M315K022?

A: Yes. The B43642C9337M000 maintains identical capacitance (330 µF), tolerance (±20%), mechanical dimensions, lead spacing, and package type. The 400 V rating exceeds the original 315 V requirement. Both parts are ROHS3 compliant and REACH unaffected. The higher voltage rating and improved ESR characteristics make this a direct substitute.

Q: What is the difference between the 450MXK330MEFCFA30X30 and the original part?

A: The 450MXK330MEFCFA30X30 maintains identical capacitance, tolerance, mechanical dimensions, and package configuration. The primary difference is the voltage rating (450 V versus 315 V) and extended operating temperature range (-25°C ~ 105°C versus -25°C ~ 85°C). The higher voltage rating provides additional safety margin in applications subject to voltage transients.

Q: Is the LGU2F331MELB suitable for direct replacement?

A: Yes. The LGU2F331MELB is a direct replacement for the 380LX331M315K022. Both parts share identical voltage rating (315 V), capacitance (330 µF), tolerance (±20%), and mechanical specifications. The LGU2F331MELB provides extended operating temperature capability to 105°C, which is a performance enhancement without affecting compatibility.

Q: Are all substitute parts through-hole mounted?

A: Yes. All substitute parts listed—B43642C9337M000, 450MXK330MEFCFA30X30, and LGU2F331MELB—are through-hole mounted radial, can snap-in packages with identical lead spacing (10.00 mm) and physical dimensions (30.00 mm diameter, 32.00 mm maximum seated height).

Q: Do all substitute parts meet environmental compliance requirements?

A: Yes. All substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the original 380LX331M315K022. All parts maintain Active product status.

Q: What is the significance of ESR differences between parts?

A: ESR (Equivalent Series Resistance) affects ripple current handling and heat dissipation. The B43642C9337M000 provides lower ESR (270 mOhm @ 100Hz) compared to the original part (603 mOhm @ 120Hz), resulting in improved performance in high-ripple-current applications. The other substitutes do not specify ESR values in the provided data.

Q: Can I use a higher voltage-rated substitute in a 315 V application?

A: Yes. Using a higher voltage-rated capacitor (400 V or 450 V) in a 315 V application is electrically valid. The capacitor will operate below its rated voltage, which does not compromise functionality or reliability. This approach provides additional voltage margin for transient protection.

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