ESMM451VSN331MR40S Equivalent & Substitute Parts

Part Overview

The ESMM451VSN331MR40S is a 330 µF, 450 V aluminum electrolytic capacitor manufactured by Chemi-Con in the SMM series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high voltage energy storage and filtering. The part operates across a temperature range of -25°C to 85°C with a rated lifetime of 3000 hours at 85°C. As an active product with RoHS compliance, equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support applications requiring enhanced thermal performance or extended operational life.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Tolerance	±20%	—
Voltage - Rated	450	V
ESR (Equivalent Series Resistance)	1.005	Ohm @ 120Hz
Lifetime @ Temperature	3000	Hrs @ 85°C
Operating Temperature Range	-25°C to 85°C	—
Polarization	Polar	—
Lead Spacing	0.394" (10.00mm)	—
Size / Dimension	1.181" Dia (30.00mm)	—
Height - Seated (Max)	1.654" (42.00mm)	—
Mounting Type	Through Hole	—
Package / Case	Radial, Can - Snap-In	—
RoHS Status	RoHS Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the ESMM451VSN331MR40S is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Capacitance: 330 µF
Tolerance: ±20%
Voltage - Rated: 450 V
Polarization: Polar
Lead Spacing: 0.394" (10.00mm)
Size / Dimension: 1.181" Dia (30.00mm)
Package / Case: Radial, Can - Snap-In
Mounting Type: Through Hole

Compatible Variation Parameters:

Height - Seated (Max): 1.575" (40.00mm) to 1.654" (42.00mm)
Operating Temperature Range: -25°C to 85°C or -25°C to 105°C or -40°C to 105°C
Lifetime @ Temperature: 3000 Hrs @ 85°C, 3000 Hrs @ 105°C, or 5000 Hrs @ 105°C
ESR: Values within acceptable range for the application
RoHS Status: RoHS Compliant or ROHS3 Compliant

All identified substitute parts maintain identical capacitance, voltage rating, tolerance, physical footprint, and snap-in package configuration. Variations in thermal performance, ESR characteristics, and operational lifetime reflect different manufacturer designs and series classifications, all of which are electrically and mechanically compatible with the original specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Tolerance	ESR @ Frequency	Lifetime @ Temp	Operating Temp Range	Height (Max)	RoHS Status
ESMM451VSN331MR40S	Chemi-Con	SMM	330	450	±20%	1.005 Ohm @ 120Hz	3000 Hrs @ 85°C	-25°C ~ 85°C	1.654" (42.00mm)	RoHS Compliant
ELXS451VSN331MR40S	Chemi-Con	LXS	330	450	±20%	—	5000 Hrs @ 105°C	-25°C ~ 105°C	1.654" (42.00mm)	ROHS3 Compliant
B43508B5337M000	EPCOS - TDK Electronics	B43508	330	450	±20%	370 mOhm @ 100Hz	3000 Hrs @ 105°C	-40°C ~ 105°C	1.654" (42.00mm)	ROHS3 Compliant
B43644A5337M000	EPCOS - TDK Electronics	B43644	330	450	±20%	90 mOhm @ 100Hz	5000 Hrs @ 105°C	-40°C ~ 105°C	1.654" (42.00mm)	ROHS3 Compliant
LLS2W331MELB	Nichicon	LLS	330	450	±20%	—	3000 Hrs @ 85°C	-25°C ~ 85°C	1.575" (40.00mm)	ROHS3 Compliant
SLPX331M450E7P3	Cornell Dubilier Electronics (CDE)	SLPX	330	450	±20%	804 mOhm @ 120Hz	3000 Hrs @ 85°C	-25°C ~ 85°C	1.575" (40.00mm)	ROHS3 Compliant
450VXH330MEFCSN30X40	Rubycon	VXH	330	450	±20%	—	5000 Hrs @ 105°C	-25°C ~ 105°C	1.654" (42.00mm)	ROHS3 Compliant
LGN2W331MELB40	Nichicon	LGN	330	450	±20%	—	3000 Hrs @ 105°C	-25°C ~ 105°C	1.654" (42.00mm)	ROHS3 Compliant
LQS2W331MELB40	Nichicon	LQS	330	450	±20%	—	3000 Hrs @ 105°C	-25°C ~ 105°C	1.654" (42.00mm)	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Same Thermal Performance):

LLS2W331MELB (Nichicon) and SLPX331M450E7P3 (Cornell Dubilier Electronics) maintain identical thermal specifications to the ESMM451VSN331MR40S with 3000 hours lifetime at 85°C. Both are ROHS3 compliant and suitable for direct replacement in applications where the original thermal rating is sufficient. LLS2W331MELB has a maximum seated height of 1.575" (40.00mm), which is 0.079" shorter than the original part.

Upgraded Thermal Performance:

ELXS451VSN331MR40S (Chemi-Con), 450VXH330MEFCSN30X40 (Rubycon), LGN2W331MELB40 (Nichicon), and LQS2W331MELB40 (Nichicon) provide extended operational life of 5000 hours at 105°C or 3000 hours at 105°C, with operating temperature ranges extending to 105°C. These parts are ROHS3 compliant and suitable for applications requiring enhanced thermal stability or operation in elevated temperature environments.

Extended Temperature Range:

B43508B5337M000 and B43644A5337M000 (EPCOS - TDK Electronics) support operating temperatures from -40°C to 105°C, providing the widest thermal envelope. B43644A5337M000 offers superior ESR performance at 90 mOhm @ 100Hz with 5000 hours lifetime at 105°C. Both are ROHS3 compliant.

All substitute parts are active products with current manufacturing status and full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can I substitute LLS2W331MELB for ESMM451VSN331MR40S in my application?

A: Yes, LLS2W331MELB is electrically and mechanically compatible. Both parts share identical capacitance (330 µF), voltage rating (450 V), tolerance (±20%), lead spacing (10.00mm), and snap-in package configuration. The primary difference is a 0.079" reduction in maximum seated height (1.575" vs. 1.654"). Verify that your PCB layout accommodates this height variation.

Q: What is the difference between the ESMM451VSN331MR40S and ELXS451VSN331MR40S?

A: Both are Chemi-Con products with identical electrical specifications. The ELXS451VSN331MR40S (LXS series) provides extended thermal performance with 5000 hours lifetime at 105°C and an operating temperature range to 105°C, compared to 3000 hours at 85°C for the ESMM451VSN331MR40S (SMM series). The ELXS variant is suitable for applications requiring enhanced thermal stability.

Q: Are all substitute parts RoHS compliant?

A: Yes. The original ESMM451VSN331MR40S is RoHS Compliant. All identified substitute parts are either RoHS Compliant or ROHS3 Compliant, meeting current regulatory requirements.

Q: Which substitute part has the lowest ESR?

A: B43644A5337M000 (EPCOS - TDK Electronics) has the lowest ESR at 90 mOhm @ 100Hz. This part also provides 5000 hours lifetime at 105°C and an extended operating temperature range of -40°C to 105°C.

Q: Can I use a substitute part with a different maximum seated height?

A: Height variations between 1.575" (40.00mm) and 1.654" (42.00mm) are within the allowed mechanical parameters. Verify that your PCB layout, enclosure clearance, and component placement accommodate the specific height of the substitute part selected.

Q: What is the significance of the snap-in package configuration?

A: The snap-in package indicates a radial, can-style aluminum electrolytic capacitor with mechanical retention features for through-hole mounting. All substitute parts maintain this identical package type, ensuring compatibility with existing PCB footprints and mounting hardware.

Q: Are there inventory considerations when selecting a substitute?

A: Inventory levels vary by part number and manufacturer. Consult current stock availability through your component supplier. The provided inventory data reflects availability at the time of documentation and may change.

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