227LBA450M2DF Equivalent & Substitute Parts

Part Overview

The 227LBA450M2DF is a 220 µF, 450 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LBA series. This radial, can-style snap-in capacitor is designed for general-purpose applications with a rated lifetime of 2000 hours at 85°C and an operating temperature range of -25°C to 85°C. The part is currently active and ROHS3 compliant.

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when design requirements demand enhanced performance characteristics such as extended lifetime or higher temperature ratings, or when alternative manufacturers' components meet the same electrical and mechanical specifications for cost optimization or supply chain flexibility.

Key Parameters

Parameter	Value	Unit
Capacitance	220	µF
Tolerance	±20%	—
Voltage - Rated	450	V
Lifetime @ Temperature	2000 Hrs @ 85°C	—
Operating Temperature Range	-25°C ~ 85°C	—
Lead Spacing	0.394" (10.00 mm)	—
Case Diameter	1.181" (30.00 mm)	—
Mounting Type	Through Hole	—
Package / Case	Radial, Can - Snap-In	—
Polarization	Polar	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the 227LBA450M2DF is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match Exactly):

Capacitance: 220 µF
Tolerance: ±20%
Voltage Rating: 450 V (or higher)
Lead Spacing: 0.394" (10.00 mm)
Case Diameter: 1.181" (30.00 mm)
Mounting Type: Through Hole
Package / Case: Radial, Can - Snap-In
Polarization: Polar

Performance Parameters (Must Meet or Exceed):

Lifetime @ Temperature: 2000 Hrs @ 85°C (minimum)
Operating Temperature Range: -25°C ~ 85°C (minimum)

Substitute parts are grouped into two categories:

Direct Substitutes: Parts that maintain identical electrical ratings (450 V, 220 µF, ±20%) and mechanical form factors while meeting or exceeding the baseline lifetime specification of 2000 hours at 85°C.

Upgrade Substitutes: Parts that maintain identical capacitance and voltage ratings but offer enhanced performance through extended lifetime ratings (3000 hours or greater) or elevated maximum operating temperatures (105°C), providing improved reliability margins for demanding applications.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	Tolerance	Lifetime @ Temp.	Operating Temp. Range (°C)	Height - Seated (Max)	Product Status	RoHS Status
227LBA450M2DF	Cornell Dubilier / Illinois Capacitor	LBA	220	450	±20%	2000 Hrs @ 85°C	-25 ~ 85	1.654" (42.00 mm)	Active	ROHS3 Compliant
380LQ221M450K022	Cornell Dubilier Electronics (CDE)	380LQ	220	450	±20%	2000 Hrs @ 85°C	-25 ~ 85	1.260" (32.00 mm)	Active	ROHS3 Compliant
ESMQ451VSN221MR30S	Chemi-Con	SMQ	220	450	±20%	2000 Hrs @ 85°C	-25 ~ 85	1.181" (30.00 mm)	Active	RoHS Compliant
ESMR451VSN221MR25S	Chemi-Con	SMR	220	450	±20%	2000 Hrs @ 85°C	-25 ~ 85	1.083" (27.50 mm)	Active	RoHS Compliant
LLS2W221MELB	Nichicon	LLS	220	450	±20%	3000 Hrs @ 85°C	-25 ~ 85	1.181" (30.00 mm)	Active	ROHS3 Compliant
381LX221M450K042	Cornell Dubilier Electronics (CDE)	381LX	220	450	±20%	3000 Hrs @ 105°C	-25 ~ 105	1.654" (42.00 mm)	Active	ROHS3 Compliant
B43252B5227M000	EPCOS - TDK Electronics	B43252	220	450	±20%	2000 Hrs @ 105°C	-25 ~ 105	1.654" (42.00 mm)	Active	ROHS3 Compliant
B43504B5227M000	EPCOS - TDK Electronics	B43504	220	450	±20%	3000 Hrs @ 105°C	-40 ~ 105	1.654" (42.00 mm)	Not For New Designs	ROHS3 Compliant
B43509B5227M000	EPCOS - TDK Electronics	B43509	220	450	±20%	3000 Hrs @ 105°C	-40 ~ 105	1.654" (42.00 mm)	Active	ROHS3 Compliant
B43509B5227M060	EPCOS - TDK Electronics	B43509	220	450	±20%	3000 Hrs @ 105°C	-40 ~ 105	1.654" (42.00 mm)	Active	ROHS3 Compliant
B43541B6227M000	EPCOS - TDK Electronics	B43541	220	500	±20%	8000 Hrs @ 85°C	-25 ~ 85	1.654" (42.00 mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (Equivalent Performance):

The parts 380LQ221M450K022, ESMQ451VSN221MR30S, ESMR451VSN221MR25S, and LLS2W221MELB are direct functional equivalents to the 227LBA450M2DF. All maintain the 220 µF capacitance, 450 V voltage rating, ±20% tolerance, and 2000-hour lifetime specification at 85°C. These parts are suitable for direct replacement in existing designs without modification. All direct substitutes are ROHS3 compliant or RoHS compliant and carry Active product status, ensuring continued availability and manufacturing support.

The primary distinction among direct substitutes is physical height. The 227LBA450M2DF has a seated height of 1.654" (42.00 mm). The 380LQ221M450K022 offers a reduced height of 1.260" (32.00 mm), while ESMQ451VSN221MR30S and LLS2W221MELB provide heights of 1.181" (30.00 mm) and 1.083" (27.50 mm) respectively. Height-constrained applications may benefit from these compact alternatives.

Upgrade Substitutes (Enhanced Performance):

The parts 381LX221M450K042, B43252B5227M000, B43509B5227M000, and B43509B5227M060 provide enhanced reliability through extended lifetime ratings or elevated maximum operating temperatures. These upgrades are appropriate for applications requiring improved thermal margin or extended service life.

The 381LX221M450K042 extends lifetime to 3000 hours at 105°C maximum operating temperature, providing a 50% increase in rated lifetime and 20°C additional thermal headroom compared to the baseline part.

The B43252B5227M000 maintains the 2000-hour lifetime specification but elevates the maximum operating temperature to 105°C, suitable for applications with elevated ambient conditions.

The B43509B5227M000 and B43509B5227M060 offer the most comprehensive upgrade path, combining 3000-hour lifetime at 105°C with an extended operating temperature range of -40°C to 105°C. Both variants are Active status parts with ROHS3 compliance. The B43509B5227M060 variant includes impedance specification of 670 mOhms.

The B43504B5227M000 provides identical electrical performance to the B43509 series but carries a "Not For New Designs" product status, limiting its suitability for new development.

Voltage Upgrade Option:

The B43541B6227M000 represents a voltage upgrade path, increasing the rated voltage from 450 V to 500 V while maintaining 220 µF capacitance. This part delivers 8000 hours lifetime at 85°C, providing exceptional longevity for demanding applications. The higher voltage rating provides additional safety margin in circuits subject to transient overvoltage conditions.

All recommended parts maintain identical lead spacing (0.394" / 10.00 mm), case diameter (1.181" / 30.00 mm), mounting type (Through Hole), and package style (Radial, Can - Snap-In), ensuring mechanical compatibility with the original 227LBA450M2DF footprint.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different height than the original 227LBA450M2DF?

A: Yes, provided the substitute maintains the same lead spacing (0.394" / 10.00 mm), case diameter (1.181" / 30.00 mm), and mounting type (Through Hole). Height variations among direct substitutes range from 1.083" to 1.654". Verify that the selected height does not interfere with adjacent components or enclosure constraints in your specific application.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes maintain identical electrical ratings (220 µF, 450 V, ±20%, 2000 Hrs @ 85°C) and are suitable for one-to-one replacement. Upgrade substitutes enhance performance through extended lifetime ratings (3000 hours or greater) or elevated maximum operating temperatures (105°C), providing improved reliability margins. Upgrade substitutes are backward compatible but offer superior performance characteristics.

Q: Is the B43504B5227M000 suitable for new designs?

A: No. The B43504B5227M000 carries a "Not For New Designs" product status. For new development, select from parts with Active status: B43509B5227M000, B43509B5227M060, 381LX221M450K042, B43252B5227M000, or the direct substitutes 380LQ221M450K022, ESMQ451VSN221MR30S, ESMR451VSN221MR25S, and LLS2W221MELB.

Q: Can I use the B43541B6227M000 as a substitute for the 227LBA450M2DF?

A: Yes. The B43541B6227M000 is electrically compatible, maintaining 220 µF capacitance and ±20% tolerance. The rated voltage increases from 450 V to 500 V, providing additional voltage margin. The lifetime extends to 8000 hours at 85°C. This part is suitable for applications where higher voltage rating and extended lifetime are beneficial or required.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are either ROHS3 compliant or RoHS compliant. The 227LBA450M2DF is ROHS3 compliant. Direct substitutes ESMQ451VSN221MR30S and ESMR451VSN221MR25S are RoHS compliant. All upgrade substitutes are ROHS3 compliant.

Q: What is the significance of the operating temperature range difference between the 227LBA450M2DF and B43509B5227M000?

A: The 227LBA450M2DF operates from -25°C to 85°C, while the B43509B5227M000 extends the lower limit to -40°C. This 15°C additional cold-temperature capability is beneficial for applications exposed to extreme environmental conditions or cryogenic storage environments. The upper temperature limit remains at 105°C for the B43509 series.

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

A: Evaluate your application requirements against the following criteria: (1) Physical space constraints—select based on required height; (2) Thermal environment—if operating above 85°C, select an upgrade substitute with 105°C maximum rating; (3) Lifetime requirements—if extended service life is critical, select parts with 3000-hour or 8000-hour ratings; (4) Voltage margin—if transient overvoltage is a concern, consider the B43541B6227M000 with 500 V rating; (5) Product status—for new designs, avoid parts marked "Not For New Designs."

Q: Are the ESR (Equivalent Series Resistance) values provided for all substitute parts?

A: ESR values are provided for the 227LBA450M2DF (1.50715 Ohm @ 120 Hz), 380LQ221M450K022 (904 mOhm @ 120 Hz), and B43504B5227M000 (610 mOhm @ 100 Hz) and B43509B5227M000 (450 mOhm @ 100 Hz). ESR specifications are not provided for ESMQ451VSN221MR30S, ESMR451VSN221MR25S, LLS2W221MELB, 381LX221M450K042, B43252B5227M000, or B43509B5227M060. Contact the respective manufacturers for complete ESR data if this parameter is critical to your circuit design.

Q: Can I mix different substitute parts in the same circuit or application?

A: Yes, provided all selected parts meet the minimum electrical and mechanical requirements for your application. Mixing parts with different ESR values, lifetime ratings, or temperature capabilities is acceptable from a functional standpoint. However, for consistency and simplified maintenance, using a single part number across an application is recommended.

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