ESMQ451VSN331MA30S Equivalent & Substitute Parts

Part Overview

The ESMQ451VSN331MA30S is a 330 µF, 450 V aluminum electrolytic capacitor manufactured by Chemi-Con in the SMQ series. This radial, can-style snap-in capacitor is rated for 2000 hours at 85°C and is designed for general-purpose applications requiring high-voltage energy storage and filtering. The part is Active status and RoHS Compliant.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when inventory constraints require alternative sourcing, or when design specifications allow for compatible alternatives from different manufacturers that meet the same electrical and mechanical requirements.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	450 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	0.394" (10.00 mm)
Case Diameter	1.378" (35.00 mm)
Maximum Height	1.260" (32.00 mm)
Operating Temperature Range	-25°C to 85°C
Lifetime Rating	2000 Hrs @ 85°C
Polarization	Polar
Application	General Purpose

Substitute Part Grouping Explanation

Substitution of aluminum electrolytic capacitors is determined by strict equivalence in the following parameters:

Critical Parameters (Must Match Exactly):

Capacitance: 330 µF
Voltage Rating: 450 V
Tolerance: ±20%
Package Type: Radial, Can - Snap-In
Mounting Type: Through Hole
Lead Spacing: 0.394" (10.00 mm)
Case Diameter: 1.378" (35.00 mm)

Compatible Variation Parameters:

Maximum Height: Substitute parts may vary within physical envelope constraints
Operating Temperature Range: Substitute parts may extend the upper or lower temperature limits
Lifetime Rating: Substitute parts may offer extended lifetime ratings at higher temperatures
Ripple Current Ratings: Substitute parts may have different ripple current specifications

All substitute parts listed maintain identical capacitance, voltage rating, tolerance, and physical footprint dimensions. Variations in height, temperature range, and lifetime rating represent either direct equivalents or performance upgrades that do not compromise circuit compatibility.

Parameter Comparison

Parameter	ESMQ451VSN331MA30S	ESMR451VSN331MA25S	B43634C5337M000	B43640C5337M000	LGG2W331MELC30	450MXH330MEFCSN35X30	380LQ331M450A022
Manufacturer	Chemi-Con	Chemi-Con	EPCOS - TDK Electronics	EPCOS - TDK Electronics	Nichicon	Rubycon	Cornell Dubilier Electronics
Series	SMQ	SMR	B43634	B43640	LGG	MXH	380LQ
Capacitance	330 µF	330 µF	330 µF	330 µF	330 µF	330 µF	330 µF
Voltage Rating	450 V	450 V	450 V	450 V	450 V	450 V	450 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±20%
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)	0.394" (10.00 mm)	0.394" (10.00 mm)
Case Diameter	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)
Maximum Height	1.260" (32.00 mm)	1.083" (27.50 mm)	1.260" (32.00 mm)	1.260" (32.00 mm)	1.260" (32.00 mm)	1.260" (32.00 mm)	1.260" (32.00 mm)
Operating Temperature Range	-25°C to 85°C	-25°C to 85°C	-25°C to 85°C	-40°C to 105°C	-25°C to 105°C	-25°C to 105°C	-25°C to 85°C
Lifetime @ Temperature	2000 Hrs @ 85°C	2000 Hrs @ 85°C	8000 Hrs @ 85°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C	2000 Hrs @ 85°C
Ripple Current @ 120 Hz	2.01 A	2.1 A	2.1 A @ 100 Hz	1.43 A @ 100 Hz	1.2 A	1.54 A	2.01 A
Ripple Current @ High Frequency	2.8743 A @ 50 kHz	3.003 A @ 50 kHz	Not specified	Not specified	1.716 A @ 50 kHz	2.156 A @ 10 kHz	2.81 A @ 20 kHz
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	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	Through Hole	Through Hole
RoHS Status	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Direct Equivalent - Same Manufacturer (Chemi-Con):

ESMR451VSN331MA25S is a direct equivalent from the same manufacturer with identical electrical specifications. This part features a reduced maximum height of 1.083" (27.50 mm) compared to the original 1.260" (32.00 mm), providing a space-saving alternative for applications with height constraints. Both parts are RoHS Compliant and Active status. The ESMR variant has higher ripple current ratings at high frequency (3.003 A @ 50 kHz versus 2.8743 A @ 50 kHz).

Extended Lifetime Equivalents:

B43634C5337M000 (EPCOS - TDK Electronics) provides extended lifetime of 8000 hours at 85°C compared to the original 2000 hours, with identical physical dimensions and electrical ratings. This part is ROHS3 Compliant and Active status.

LGG2W331MELC30 (Nichicon) and 450MXH330MEFCSN35X30 (Rubycon) both offer extended operating temperature range to 105°C with 2000-hour lifetime at that temperature. Both are ROHS3 Compliant and Active status. These parts are suitable for applications requiring higher temperature performance.

B43640C5337M000 (EPCOS - TDK Electronics) extends the operating temperature range to -40°C to 105°C, providing the widest temperature envelope among all substitutes. This part is ROHS3 Compliant and Active status.

Parametric Equivalent:

380LQ331M450A022 (Cornell Dubilier Electronics) is a parametric equivalent with identical electrical specifications and physical dimensions. This part is ROHS3 Compliant and Active status with Moisture Sensitivity Level 1 (Unlimited).

All substitute parts maintain Active product status and full regulatory compliance (RoHS and REACH). Selection should be based on specific application requirements for operating temperature range, lifetime rating, and ripple current performance.

Frequently Asked Questions (FAQ)

Q: Can ESMR451VSN331MA25S be used as a direct replacement for ESMQ451VSN331MA30S?

A: Yes. Both parts are manufactured by Chemi-Con with identical capacitance (330 µF), voltage rating (450 V), tolerance (±20%), lead spacing (10.00 mm), and case diameter (35.00 mm). The ESMR variant has a reduced maximum height of 27.50 mm versus 32.00 mm, making it suitable for space-constrained applications. Electrical performance is equivalent or superior.

Q: What is the difference between the EPCOS B43634C5337M000 and B43640C5337M000?

A: Both parts are identical in capacitance, voltage, tolerance, and physical dimensions. The B43634 is rated for 8000 hours at 85°C, while the B43640 is rated for 2000 hours at 105°C with an extended operating temperature range of -40°C to 105°C. Select B43634 for standard temperature applications requiring extended lifetime; select B43640 for applications requiring wider temperature range operation.

Q: Are all substitute parts physically compatible with the original PCB layout?

A: All substitute parts share identical lead spacing (10.00 mm) and case diameter (35.00 mm). ESMR451VSN331MA25S has a reduced height of 27.50 mm compared to the original 32.00 mm, which is compatible with any layout designed for the original part. All other substitutes maintain the original 32.00 mm height. Verify clearance for the ESMR variant if height is critical.

Q: Which substitute part offers the best performance for high-temperature applications?

A: B43640C5337M000 provides the widest operating temperature range (-40°C to 105°C) and is suitable for extreme temperature environments. LGG2W331MELC30 and 450MXH330MEFCSN35X30 both operate to 105°C with 2000-hour lifetime at that temperature, suitable for elevated-temperature applications.

Q: Do all substitute parts meet RoHS compliance?

A: Yes. The original ESMQ451VSN331MA30S is RoHS Compliant. All substitute parts are either RoHS Compliant or ROHS3 Compliant, meeting current regulatory requirements.

Q: What is the significance of the different ripple current ratings among substitute parts?

A: Ripple current rating indicates the maximum AC current the capacitor can handle at specified frequencies without exceeding temperature limits. Higher ripple current ratings indicate better performance in high-frequency switching applications. Select substitutes based on your circuit's actual ripple current requirements at the operating frequency.

Q: Can 380LQ331M450A022 be used in applications requiring extended lifetime?

A: No. The 380LQ331M450A022 is rated for 2000 hours at 85°C, identical to the original part. For extended lifetime, select B43634C5337M000 (8000 hours at 85°C) or the temperature-extended variants LGG2W331MELC30 or 450MXH330MEFCSN35X30 (2000 hours at 105°C).

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message