337LMX450M2DH Equivalent & Substitute Parts

Part Overview

The 337LMX450M2DH is a 330 µF, 450 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LMX series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high voltage energy storage with a rated lifetime of 5000 hours at 105°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent capacitance, voltage rating, and mechanical compatibility are maintained across alternative manufacturers while meeting application requirements.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Tolerance	±20%	-
Voltage - Rated	450	V
Lifetime @ Temperature	5000	Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C	-
Lead Spacing	0.394"	(10.00 mm)
Diameter	1.181"	(30.00 mm)
Package / Case	Radial, Can - Snap-In	-
Mounting Type	Through Hole	-
Polarization	Polar	-

Substitute Part Grouping Explanation

Substitute parts for the 337LMX450M2DH are classified based on the following substitution criteria:

Direct Equivalent Substitutes maintain identical electrical and mechanical specifications:

Capacitance: 330 µF
Voltage Rating: 450 V
Tolerance: ±20%
Package: Radial, Can - Snap-In
Lead Spacing: 0.394" (10.00 mm)
Diameter: 1.181" (30.00 mm)
Lifetime: 5000 Hrs @ 105°C
Operating Temperature: -25°C ~ 105°C

Upgrade Substitutes provide enhanced performance or higher voltage ratings while maintaining core mechanical compatibility:

Same capacitance and tolerance
Same or higher voltage rating
Same package and lead spacing
Enhanced lifetime or extended temperature range

Parametric Equivalent Substitutes match all critical electrical parameters with minor variations in secondary specifications:

Same capacitance, voltage, tolerance, and package
Acceptable variations in ESR or ripple current within application tolerance

Parameter Comparison

Parameter	337LMX450M2DH (Cornell Dubilier)	450VXH330MEFCSN30X40 (Rubycon)	ELHS501VSN331MR50S (Chemi-Con)	ETXH451VSN331MR50S (Chemi-Con)	MAL215947331E3 (Vishay)
Capacitance	330 µF	330 µF	330 µF	330 µF	330 µF
Tolerance	±20%	±20%	±20%	±20%	±20%
Voltage - Rated	450 V	450 V	500 V	450 V	450 V
Lifetime @ Temp.	5000 Hrs @ 105°C	5000 Hrs @ 105°C	5000 Hrs @ 105°C	10000 Hrs @ 105°C	5000 Hrs @ 105°C
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-40°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Diameter	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)
Height - Seated (Max)	2.047" (52.00 mm)	1.654" (42.00 mm)	2.067" (52.50 mm)	2.047" (52.00 mm)	2.047" (52.00 mm)
Package / Case	Radial, Can - Snap-In	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	Through Hole
Polarization	Polar	Polar	Polar	Polar	Polar
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

450VXH330MEFCSN30X40 (Rubycon VXH Series)

This direct equivalent substitute maintains all critical electrical parameters. The seated height of 1.654" (42.00 mm) is lower than the original 337LMX450M2DH at 2.047" (52.00 mm), providing a space-saving advantage in applications with height constraints. ROHS3 compliance and REACH unaffected status align with the original part. Selection is appropriate for applications where reduced height is beneficial without compromising electrical performance.

ELHS501VSN331MR50S (Chemi-Con LHS Series)

This upgrade substitute provides a higher voltage rating of 500 V compared to the original 450 V specification. The extended operating temperature range of -40°C ~ 105°C offers improved performance in cold environments. Seated height of 2.067" (52.50 mm) is comparable to the original. This part is suitable for applications requiring enhanced voltage margin or extended low-temperature operation. RoHS compliance is maintained.

ETXH451VSN331MR50S (Chemi-Con TXH Series)

This upgrade substitute doubles the lifetime rating to 10000 Hrs @ 105°C, compared to the original 5000 Hrs @ 105°C. Voltage rating, capacitance, and mechanical dimensions remain equivalent to the original 337LMX450M2DH. Selection is appropriate for long-life applications or equipment with extended service intervals. RoHS compliance is maintained.

MAL215947331E3 (Vishay 159 PUL-SI Series)

This parametric equivalent substitute matches all critical electrical specifications with identical capacitance, voltage, tolerance, and package. ESR of 600 mOhm @ 100Hz and mechanical dimensions are equivalent to the original. ROHS3 compliance and REACH unaffected status are maintained. Selection is appropriate for direct replacement in general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can I use the 450VXH330MEFCSN30X40 as a direct replacement for the 337LMX450M2DH?

A: Yes. The 450VXH330MEFCSN30X40 is a direct equivalent substitute with identical capacitance (330 µF), voltage rating (450 V), tolerance (±20%), lead spacing (0.394"), and diameter (1.181"). The primary difference is the reduced seated height of 1.654" versus 2.047", which is advantageous in space-constrained applications. Both parts are ROHS3 compliant and rated for 5000 Hrs @ 105°C.

Q: What is the advantage of the ELHS501VSN331MR50S over the original 337LMX450M2DH?

A: The ELHS501VSN331MR50S provides two key advantages: a higher voltage rating of 500 V (versus 450 V) and an extended operating temperature range of -40°C ~ 105°C (versus -25°C ~ 105°C). These features provide enhanced voltage margin and improved performance in cold environments. Capacitance, tolerance, and mechanical compatibility remain identical.

Q: Why would I select the ETXH451VSN331MR50S?

A: The ETXH451VSN331MR50S is selected for applications requiring extended service life. It provides a lifetime rating of 10000 Hrs @ 105°C, double that of the original 337LMX450M2DH at 5000 Hrs @ 105°C. All other electrical and mechanical parameters remain equivalent, making it suitable for long-life or mission-critical applications.

Q: Are all substitute parts mechanically compatible with the original 337LMX450M2DH?

A: All substitute parts share identical lead spacing (0.394" / 10.00 mm) and diameter (1.181" / 30.00 mm), ensuring PCB footprint compatibility. Seated heights vary slightly: 450VXH330MEFCSN30X40 at 1.654" (42.00 mm), ELHS501VSN331MR50S at 2.067" (52.50 mm), ETXH451VSN331MR50S at 2.047" (52.00 mm), and MAL215947331E3 at 2.047" (52.00 mm). Verify clearance in applications with tight height constraints.

Q: Do all substitute parts meet RoHS and REACH compliance?

A: Yes. All substitute parts are RoHS compliant (ROHS3 or RoHS Compliant) and REACH unaffected, matching the compliance status of the original 337LMX450M2DH.

Q: What is the difference between a direct equivalent and an upgrade substitute?

A: A direct equivalent substitute maintains all electrical and mechanical specifications of the original part. An upgrade substitute provides enhanced performance (such as higher voltage rating, extended lifetime, or wider temperature range) while maintaining mechanical compatibility and core electrical parameters. Both are suitable replacements; selection depends on application requirements.

Q: Can I use the MAL215947331E3 in any application where the 337LMX450M2DH is specified?

A: Yes. The MAL215947331E3 is a parametric equivalent with identical capacitance (330 µF), voltage rating (450 V), tolerance (±20%), and mechanical dimensions. It is suitable for direct replacement in general-purpose applications. ESR specifications differ slightly (600 mOhm @ 100Hz versus 1.0048 Ohm @ 120Hz), but both values are within acceptable ranges for standard aluminum electrolytic capacitor applications.

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