380LX331M315A012 Equivalent & Substitute Parts

Part Overview

The 380LX331M315A012 is a 330 µF, 315 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 380LX series. This component features a radial, can-style snap-in package with through-hole mounting, designed for general-purpose applications requiring stable capacitance and reliable performance across industrial temperature ranges.

The 380LX331M315A012 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Substitute components must maintain electrical compatibility while meeting or exceeding the original specifications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	315 V
Tolerance	±20%
ESR (Equivalent Series Resistance)	603 mOhm
Lifetime @ Temperature	3000 Hrs @ 85°C
Operating Temperature Range	-25°C ~ 85°C
Ripple Current @ 120 Hz	1.8 A
Lead Spacing	0.394" (10.00 mm)
Case Diameter	1.378" (35.00 mm)
Height (Seated Max)	1.063" (27.00 mm)
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 380LX331M315A012 are grouped into two categories based on electrical and mechanical compatibility:

Direct Equivalents (Same Voltage Rating - 315 V): These parts maintain the original 315 V voltage specification and are suitable for direct replacement in applications where the rated voltage is a critical design parameter. All direct equivalents share the same capacitance (330 µF), tolerance (±20%), lead spacing (10.00 mm), and mounting type (through-hole, radial snap-in).

380LX331M315J452 (CDE, Active status)
380LX331M315K022 (CDE, Active status)

Upgraded Alternatives (Higher Voltage Ratings - 350 V and Above): These parts provide higher voltage ratings (350 V, 400 V, 420 V, 450 V) and are suitable for applications where increased voltage margin is beneficial. Upgraded alternatives maintain the same capacitance (330 µF), tolerance (±20%), lead spacing (10.00 mm), case diameter (35.00 mm), and mounting type. Some upgraded alternatives offer extended operating temperature ranges (-25°C ~ 105°C) and longer lifetimes (5000 Hrs @ 105°C), providing enhanced reliability.

380LX331M350A022 (CDE, 350 V, Active status)
350VXH330MEFC35X25 (Rubycon, 350 V, Active status)
400USG330MEFC35X25 (Rubycon, 400 V, Active status)
400USG330MEFCSN35X25 (Rubycon, 400 V, Active status)
400VXH330MEFC35X25 (Rubycon, 400 V, Active status)
400VXH330MEFCSN35X25 (Rubycon, 400 V, Active status)
420MXK330MEFC35X25 (Rubycon, 420 V, Active status)
450MXK330MEFC35X25 (Rubycon, 450 V, Active status)

Substitution Criteria: The following parameters determine substitution eligibility:

Capacitance: 330 µF (fixed)
Tolerance: ±20% (fixed)
Lead Spacing: 10.00 mm (fixed)
Package Type: Radial, Can - Snap-In (fixed)
Mounting Type: Through Hole (fixed)
Voltage Rating: Equal to or greater than 315 V
Operating Temperature: Minimum -25°C ~ 85°C
Polarization: Polar (fixed)

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	ESR	Lifetime @ Temp	Operating Temp	Ripple Current @ 120 Hz	Case Dia	Height	Status	RoHS
380LX331M315A012	CDE	380LX	330 µF	315 V	±20%	603 mOhm	3000 Hrs @ 85°C	-25°C ~ 85°C	1.8 A	1.378" (35 mm)	1.063" (27 mm)	Obsolete	ROHS3
380LX331M315J452	CDE	380LX	330 µF	315 V	±20%	603 mOhm	3000 Hrs @ 85°C	-25°C ~ 85°C	1.8 A	0.984" (25 mm)	1.850" (47 mm)	Active	ROHS3
380LX331M315K022	CDE	380LX	330 µF	315 V	±20%	603 mOhm @ 120Hz	3000 Hrs @ 85°C	-25°C ~ 85°C	1.8 A	1.181" (30 mm)	1.260" (32 mm)	Active	ROHS3
380LX331M350A022	CDE	380LX	330 µF	350 V	±20%	500 mOhm @ 120Hz	3000 Hrs @ 85°C	-25°C ~ 85°C	1.9 A	1.378" (35 mm)	1.260" (32 mm)	Active	ROHS3
350VXH330MEFC35X25	Rubycon	VXH	330 µF	350 V	±20%	—	5000 Hrs @ 105°C	-25°C ~ 105°C	1.42 A	1.378" (35 mm)	1.063" (27 mm)	Active	ROHS3
400USG330MEFC35X25	Rubycon	USG	330 µF	400 V	±20%	—	3000 Hrs @ 85°C	-25°C ~ 85°C	1.9 A	1.378" (35 mm)	1.063" (27 mm)	Active	Non-compliant
400USG330MEFCSN35X25	Rubycon	USG	330 µF	400 V	±20%	—	3000 Hrs @ 85°C	-25°C ~ 85°C	1.9 A	1.378" (35 mm)	1.063" (27 mm)	Active	ROHS3
400VXH330MEFC35X25	Rubycon	VXH	330 µF	400 V	±20%	—	5000 Hrs @ 105°C	-25°C ~ 105°C	1.36 A	1.378" (35 mm)	1.063" (27 mm)	Active	ROHS3
400VXH330MEFCSN35X25	Rubycon	VXH	330 µF	400 V	±20%	—	5000 Hrs @ 105°C	-25°C ~ 105°C	1.36 A	1.378" (35 mm)	1.063" (27 mm)	Active	ROHS3
420MXK330MEFC35X25	Rubycon	MXK	330 µF	420 V	±20%	—	3000 Hrs @ 105°C	-25°C ~ 105°C	1.45 A	1.378" (35 mm)	1.063" (27 mm)	Active	ROHS3
450MXK330MEFC35X25	Rubycon	MXK	330 µF	450 V	±20%	—	3000 Hrs @ 105°C	-25°C ~ 105°C	1.42 A	1.378" (35 mm)	1.063" (27 mm)	Active	ROHS3

Engineering Selection Recommendations

For Direct Replacement (Same Voltage Rating):

The 380LX331M315K022 is the recommended direct equivalent. This part is manufactured by CDE in the same 380LX series, maintains identical electrical specifications (330 µF, 315 V, ±20%, 603 mOhm ESR, 3000 Hrs @ 85°C), and carries active product status with ROHS3 compliance. The case diameter is 1.181" (30 mm) with a height of 1.260" (32 mm), which differs from the original 1.378" × 1.063" dimensions but maintains the same lead spacing (10.00 mm) and through-hole snap-in mounting configuration.

The 380LX331M315J452 is an alternative direct equivalent with identical electrical specifications but features a smaller case diameter of 0.984" (25 mm) and greater height of 1.850" (47 mm). This part is suitable only if the application permits the different physical dimensions.

For Upgraded Performance (Higher Voltage Ratings):

The 400VXH330MEFCSN35X25 (Rubycon, 400 V) is recommended for applications requiring enhanced reliability and extended operating temperature range. This part provides 400 V rated voltage (85 V margin above the original 315 V specification), operates across -25°C ~ 105°C, and delivers 5000 Hrs @ 105°C lifetime. The case dimensions (1.378" × 1.063") match the original part exactly, and ROHS3 compliance is maintained.

The 350VXH330MEFC35X25 (Rubycon, 350 V) offers a moderate voltage upgrade to 350 V with extended temperature range (-25°C ~ 105°C) and 5000 Hrs @ 105°C lifetime. Case dimensions match the original part.

The 420MXK330MEFC35X25 and 450MXK330MEFC35X25 (Rubycon, 420 V and 450 V respectively) provide maximum voltage margins and extended operating temperature range (-25°C ~ 105°C) with 3000 Hrs @ 105°C lifetime. Both maintain the original case dimensions and ROHS3 compliance.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance except 400USG330MEFC35X25, which is RoHS non-compliant. The 400USG330MEFCSN35X25 variant of the same series provides ROHS3 compliance with identical electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can the 380LX331M315J452 be used as a direct replacement for the 380LX331M315A012?

A: The 380LX331M315J452 maintains identical electrical specifications (330 µF, 315 V, ±20%, 603 mOhm ESR, 3000 Hrs @ 85°C) and the same lead spacing (10.00 mm). However, the physical dimensions differ: the case diameter is 0.984" (25 mm) versus 1.378" (35 mm), and the height is 1.850" (47 mm) versus 1.063" (27 mm). This part is suitable only if the application permits these dimensional changes.

Q: What is the difference between the CDE 380LX331M315K022 and the original 380LX331M315A012?

A: Both parts share identical electrical specifications and are manufactured by CDE in the 380LX series. The primary difference is product status: the original is obsolete, while the 380LX331M315K022 is active. The case diameter differs slightly (1.181" versus 1.378"), but lead spacing and mounting type remain identical. The 380LX331M315K022 is the recommended direct equivalent.

Q: Why would I choose a higher voltage-rated substitute like the 400VXH330MEFCSN35X25 instead of a direct 315 V equivalent?

A: Higher voltage-rated substitutes provide increased design margin and enhanced reliability. The 400VXH330MEFCSN35X25 operates across an extended temperature range (-25°C ~ 105°C versus -25°C ~ 85°C) and delivers 5000 Hrs @ 105°C lifetime compared to 3000 Hrs @ 85°C. These upgrades are beneficial in applications subject to thermal stress or requiring extended service life. The case dimensions match the original part exactly, enabling direct physical replacement.

Q: Are all substitute parts RoHS compliant?

A: Most recommended substitutes are ROHS3 compliant. The exception is 400USG330MEFC35X25, which is RoHS non-compliant. The variant 400USG330MEFCSN35X25 provides identical electrical specifications with ROHS3 compliance.

Q: What is the significance of the lead spacing parameter in substitution?

A: Lead spacing (10.00 mm for all listed parts) determines physical compatibility with printed circuit board layouts. All substitute parts maintain the original 10.00 mm lead spacing, ensuring compatibility with existing PCB designs without modification.

Q: Can I use the Rubycon 350VXH330MEFC35X25 in place of the CDE 380LX331M315A012?

A: Yes. The 350VXH330MEFC35X25 maintains the same capacitance (330 µF), tolerance (±20%), lead spacing (10.00 mm), case diameter (1.378"), and height (1.063"). The voltage rating is upgraded to 350 V, and the operating temperature range extends to 105°C with 5000 Hrs @ 105°C lifetime. This part is suitable for direct replacement with enhanced performance characteristics.

Q: What does "snap-in" package type mean for mounting?

A: Snap-in refers to the mechanical connection method for the capacitor leads to the PCB. The leads are inserted into snap-fit receptacles on the board, providing secure mechanical retention. All substitute parts maintain this snap-in mounting configuration with through-hole lead spacing of 10.00 mm.

Q: How do I determine which substitute is best for my application?

A: Selection depends on three factors: (1) voltage requirement—if your circuit operates at 315 V or below, any substitute with equal or higher voltage rating is suitable; (2) temperature environment—if operating temperatures exceed 85°C, select parts with extended temperature range (-25°C ~ 105°C); (3) physical space—verify that case dimensions fit the available PCB footprint. The 380LX331M315K022 is recommended for direct replacement. The 400VXH330MEFCSN35X25 is recommended for applications requiring enhanced reliability and extended temperature operation.

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