380LX331M450A032 Equivalent & Substitute Parts Reference

Part Overview

The 380LX331M450A032 is a 330 µF, 450 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 380LX series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high voltage energy storage and filtering. The part is Active status and ROHS3 compliant, with 905 units currently in stock.

Substitute parts are identified when equivalent electrical performance can be maintained across critical parameters: capacitance value, voltage rating, tolerance, operating temperature range, mounting type, and package configuration. Alternative sources become necessary due to inventory constraints, lead time requirements, or design optimization for specific thermal or ripple current conditions.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Voltage - Rated	450	V
Tolerance	±20%	-
Operating Temperature Range	-25°C ~ 85°C	-
ESR @ 120Hz	553	mOhm
Lifetime @ 85°C	3000	Hrs
Ripple Current @ 120 Hz	2.01	A
Ripple Current @ 20 kHz	2.81	A
Lead Spacing	10.00	mm
Diameter	35.00	mm
Height - Seated (Max)	37.00	mm
Mounting Type	Through Hole	-
Package / Case	Radial, Can - Snap-In	-
RoHS Status	ROHS3 Compliant	-
Polarization	Polar	-

Substitute Part Grouping Explanation

Substitute parts are classified into three categories based on substitution criteria:

Direct Substitutes (Same Series, Identical Electrical Ratings): Parts maintaining 330 µF capacitance, 450 V rating, ±20% tolerance, through-hole radial snap-in package, and -25°C to 85°C operating range. Variations in ESR, lifetime hours, or physical height do not disqualify direct substitution when all core electrical parameters match.

Similar Substitutes (Alternative Manufacturers, Equivalent Performance): Parts from different manufacturers (Chemi-Con, Nichicon, Rubycon) with identical capacitance, voltage, tolerance, and mounting configuration. These parts may have different thermal ratings, ESR specifications, or ripple current ratings but maintain functional equivalence for the specified application.

Upgrade Substitutes (Enhanced Thermal Performance): Parts with extended operating temperature range (up to 105°C) or improved lifetime ratings at elevated temperatures. These provide superior reliability margins while maintaining all core electrical specifications.

Critical Substitution Parameters:

Capacitance: 330 µF (fixed)
Voltage Rating: 450 V (fixed)
Tolerance: ±20% (fixed)
Mounting: Through Hole, Radial, Snap-In (fixed)
Lead Spacing: 10.00 mm (fixed)
Polarization: Polar (fixed)

Physical dimensions (diameter, height) and thermal characteristics (ESR, lifetime, operating temperature) are secondary parameters that may vary within acceptable ranges for general-purpose applications.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Tolerance	ESR @ 120Hz (mOhm)	Lifetime @ 85°C (Hrs)	Op. Temp. Range (°C)	Diameter (mm)	Height (mm)	Ripple @ 120Hz (A)	Status
380LX331M450A032	CDE	380LX	330	450	±20%	553	3000	-25 ~ 85	35.00	37.00	2.01	Active
380LQ331M450A022	CDE	380LQ	330	450	±20%	600	2000	-25 ~ 85	35.00	32.00	2.01	Active
380LX331M450A042	CDE	380LX	330	450	±20%	603	3000	-25 ~ 85	35.00	42.00	-	Active
380LX331M450K052	CDE	380LX	330	450	±20%	550	3000	-25 ~ 85	30.00	52.00	2.00	Active
SLPX331M450E7P3	CDE	SLPX	330	450	±20%	804	3000	-25 ~ 85	30.00	40.00	2.12	Active
ESMQ451VSN331MR40S	Chemi-Con	SMQ	330	450	±20%	-	2000	-25 ~ 85	30.00	40.00	2.01	Active
ESMQ451VSN331MQ50S	Chemi-Con	SMQ	330	450	±20%	-	2000	-25 ~ 85	25.40	50.00	2.01	Active
LGW2W331MELC35	Nichicon	LGW	330	450	±20%	-	3000	-25 ~ 105	35.00	35.00	2.20	Active
LQS2W331MELC35	Nichicon	LQS	330	450	±20%	-	3000	-25 ~ 105	35.00	37.00	1.38	Active
450VXG330MEFCSN35X35	Rubycon	VXG	330	450	±20%	-	5000	-25 ~ 105	35.00	37.00	1.65	Active

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, Same PCB Footprint):

Use 380LX331M450A042 or 380LX331M450K052 when CDE 380LX series continuity is required. Both maintain identical capacitance, voltage, tolerance, and lead spacing. The 380LX331M450A042 provides identical height to the main part (37 mm) with slightly higher ESR (603 mOhm). The 380LX331M450K052 offers lower ESR (550 mOhm) but requires 52 mm height clearance and reduced diameter (30 mm).

For Compact Form Factor:

Use ESMQ451VSN331MR40S (Chemi-Con SMQ series) when space constraints require reduced diameter (30 mm) and height (40 mm). This part maintains identical ripple current rating at 120 Hz and 450 V rating with 2000-hour lifetime at 85°C.

For Enhanced Thermal Performance:

Use LGW2W331MELC35 (Nichicon LGW series) or 450VXG330MEFCSN35X35 (Rubycon VXG series) when operating temperature may exceed 85°C or extended service life is required. Both support -25°C to 105°C range with 3000+ hour lifetimes at elevated temperature. The Rubycon part offers 5000-hour lifetime at 105°C, providing maximum reliability margin. Both maintain 35 mm diameter and 37 mm height, ensuring direct PCB compatibility.

For Inventory Availability:

LGW2W331MELC35 and 450VXG330MEFCSN35X35 show highest stock levels (1,000,300 and 656,750 units respectively), suitable for high-volume procurement. SLPX331M450E7P3 (2,562 units) provides intermediate availability with CDE manufacturing continuity.

Compliance Verification:

All listed substitutes maintain ROHS3 compliance and REACH unaffected status. MSL rating is 1 (Unlimited) for CDE parts and Not Applicable for Nichicon and Rubycon alternatives, indicating no moisture sensitivity constraints for storage or handling.

Frequently Asked Questions (FAQ)

Q: Can 380LQ331M450A022 replace 380LX331M450A032 in all applications?

A: 380LQ331M450A022 is a direct substitute for capacitance, voltage, tolerance, and mounting configuration. However, it has 2000-hour lifetime at 85°C versus 3000 hours for the main part, and higher ESR (600 mOhm vs. 553 mOhm). Use this substitute only when application lifetime requirements do not exceed 2000 hours at 85°C. Physical height is 32 mm (5 mm shorter), which may affect PCB layout.

Q: What is the difference between CDE 380LX and 380LQ series?

A: Both series provide 330 µF at 450 V with ±20% tolerance and through-hole snap-in mounting. The 380LX series offers 3000-hour lifetime at 85°C with lower ESR (550-603 mOhm range). The 380LQ series provides 2000-hour lifetime with higher ESR (600 mOhm). Series selection depends on application thermal stress and expected service duration.

Q: Can Nichicon LGW2W331MELC35 be used as a direct replacement?

A: LGW2W331MELC35 maintains identical capacitance (330 µF), voltage (450 V), tolerance (±20%), diameter (35 mm), and height (35 mm). Lead spacing and mounting type are identical. The primary difference is extended operating temperature range (-25°C to 105°C versus -25°C to 85°C) and 3000-hour lifetime at 105°C. This part is a direct PCB replacement with enhanced thermal capability. No circuit modifications are required.

Q: What does ESR variation mean for circuit performance?

A: ESR (Equivalent Series Resistance) affects ripple voltage and heat dissipation. Higher ESR (600-804 mOhm) increases voltage ripple and internal heating under AC ripple current stress. Lower ESR (550-553 mOhm) reduces ripple voltage and heat generation. For general-purpose filtering, ESR variations within 550-804 mOhm range are acceptable. For high-ripple-current applications, select parts with ESR ≤ 603 mOhm.

Q: Are Chemi-Con SMQ series parts compatible with CDE 380LX footprint?

A: ESMQ451VSN331MR40S and ESMQ451VSN331MQ50S maintain identical lead spacing (10 mm) and mounting type (through-hole snap-in). However, diameter and height differ: ESMQ451VSN331MR40S is 30 mm diameter × 40 mm height, while ESMQ451VSN331MQ50S is 25.4 mm diameter × 50 mm height. Verify PCB layout clearances before substitution. Both parts are electrically equivalent with 2000-hour lifetime at 85°C.

Q: Which substitute offers the best reliability for long-term operation?

A: 450VXG330MEFCSN35X35 (Rubycon VXG series) provides maximum reliability with 5000-hour lifetime at 105°C. This part maintains identical physical dimensions (35 mm diameter, 37 mm height) to the main part, ensuring direct PCB compatibility. Extended thermal rating provides 67% longer service life compared to the main part's 3000-hour rating at 85°C.

Q: Can I use SLPX331M450E7P3 in high-ripple-current applications?

A: SLPX331M450E7P3 supports 2.12 A ripple current at 120 Hz and 3.12 A at 20 kHz, which exceeds the main part's ratings (2.01 A and 2.81 A respectively). This part is suitable for high-ripple-current filtering. However, ESR is 804 mOhm (higher than main part's 553 mOhm), resulting in increased internal heating. Use this part only when ripple current capacity is the primary selection criterion and thermal management is adequate.

Q: What is the impact of operating temperature range differences?

A: Main part and most CDE substitutes operate -25°C to 85°C. Nichicon and Rubycon alternatives extend to -25°C to 105°C. Extended range allows operation in higher-temperature environments without derating. For applications with ambient temperatures below 85°C, both ranges are equivalent. For applications approaching or exceeding 85°C, select extended-range parts (LGW2W331MELC35 or 450VXG330MEFCSN35X35) to maintain rated performance.

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