LPX221M350C5P3 Equivalent & Substitute Parts

Part Overview

The LPX221M350C5P3 is a 220 µF, 350 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in the LPX series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring through-hole mounting. The part is currently active in production and maintains full RoHS3 compliance with unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent capacitance and tolerance values are available in alternative manufacturers' product lines, provided that voltage rating, physical dimensions, and mounting compatibility remain within acceptable engineering parameters for the application.

Substiute Parts

LPX221M350C5P3

Cornell Dubilier Electronics (CDE)In Stock: 1233LPX221M350C5P3 Datasheet

Current PartRFQ

B43305B9227M000

EPCOS - TDK ElectronicsIn Stock: 274106B43305B9227M000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LPX221M350C5P3 is determined by the following criteria:

Primary Matching Parameters:

• Capacitance value: 220 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Package / Case: Radial, Can - Snap-In (exact match required)
• Mounting Type: Through Hole (exact match required)
• Lead Spacing: 10.00 mm (exact match required)
• Physical Diameter: 25.00 mm (exact match required)

Allowable Variation Parameters:

• Voltage Rating: Equal to or greater than 350 V
• ESR: Lower values acceptable; higher values require application verification
• Lifetime @ 85°C: Equal to or greater than 1000 Hrs
• Height (Seated Max): Equal to or less than 35.00 mm to ensure mechanical fit in existing PCB layouts

The substitute part B43305B9227M000 meets all primary matching criteria and exceeds performance specifications in voltage rating (400 V), ESR (620 mOhm @ 100Hz), and lifetime (2000 Hrs @ 85°C). Physical dimensions remain compatible with the original design envelope.

Parameter Comparison

Engineering Selection Recommendations

LPX221M350C5P3 (Cornell Dubilier Electronics):

• Product Status: Active
• Recommended for new designs requiring CDE component qualification
• Full compliance with RoHS3 and REACH regulations
• Standard lifetime specification of 1000 Hrs @ 85°C suitable for general-purpose applications

B43305B9227M000 (EPCOS - TDK Electronics):

• Product Status: Not For New Designs
• Suitable for replacement and repair applications only
• Exceeds performance specifications: 400 V rating, 620 mOhm ESR, 2000 Hrs @ 85°C lifetime
• Physically compatible with existing PCB layouts (32 mm height vs. 35 mm maximum)
• Full compliance with RoHS3 and REACH regulations

Selection between these parts should be based on design phase and supply chain requirements. The LPX221M350C5P3 is the appropriate choice for new product development. The B43305B9227M000 is suitable for field replacement where the original part is unavailable, provided that the design does not require CDE-specific component qualification.

Frequently Asked Questions (FAQ)

Q: Can B43305B9227M000 be used as a direct replacement for LPX221M350C5P3 in existing designs?

A: Yes. Both parts share identical capacitance (220 µF), tolerance (±20%), lead spacing (10.00 mm), diameter (25.00 mm), and mounting type (through-hole, radial snap-in). The substitute part has a lower seated height (32 mm vs. 35 mm), which is compatible with existing PCB layouts. The higher voltage rating (400 V vs. 350 V) and lower ESR provide improved performance margins.

Q: What is the significance of the "Not For New Designs" status on B43305B9227M000?

A: This designation indicates that EPCOS - TDK Electronics has discontinued this part for new product development. It remains available for replacement and repair applications. For new designs, the LPX221M350C5P3 should be specified to ensure long-term supply chain stability and manufacturer support.

Q: Are there physical fit concerns when substituting B43305B9227M000 for LPX221M350C5P3?

A: No. The substitute part is physically smaller in height (32 mm seated vs. 35 mm maximum for the original). All other dimensions—diameter (25 mm), lead spacing (10 mm), and mounting style (snap-in radial)—are identical. The smaller height ensures compatibility with existing PCB designs without modification.

Q: How do the ESR specifications compare between these parts?

A: The LPX221M350C5P3 specifies 904 mOhm @ 120 Hz. The B43305B9227M000 specifies 620 mOhm @ 100 Hz. The substitute part exhibits lower ESR, which reduces heat generation and improves ripple current handling. This represents an improvement over the original specification.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the LPX221M350C5P3 and B43305B9227M000 are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity). They are electrically and environmentally equivalent from a regulatory standpoint.

Q: What is the difference in lifetime specifications?

A: The LPX221M350C5P3 is rated for 1000 Hrs @ 85°C. The B43305B9227M000 is rated for 2000 Hrs @ 85°C. The substitute part offers double the operational lifetime at elevated temperature, providing extended service life in thermal stress conditions.

Q: Can these parts be used interchangeably in high-ripple-current applications?

A: Both parts are rated for ripple current operation. The LPX221M350C5P3 handles 1.1 A @ 120 Hz and 1.32 A @ 50 kHz. The B43305B9227M000 handles 1.28 A @ 100 Hz. Application-specific ripple current requirements should be verified against the actual operating frequency and current magnitude in the circuit.