LP331M450H7P3 Equivalent & Substitute Parts

Part Overview

The LP331M450H7P3 is a 330 µF, 450 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is designed for general-purpose applications requiring high-voltage energy storage and filtering. The part is Active in product status with RoHS3 compliance and REACH unaffected designation.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this capacitor category. Substitution becomes necessary due to inventory availability, supply chain considerations, or design flexibility requirements while maintaining functional equivalence.

Substiute Parts

LP331M450H7P3

Cornell Dubilier Electronics (CDE)In Stock: 722LP331M450H7P3 Datasheet

Current PartRFQ

B43508B5337M000

EPCOS - TDK ElectronicsIn Stock: 139341B43508B5337M000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP331M450H7P3 is based on strict equivalence of the following critical parameters:

Electrical Parameters:

• Capacitance value: 330 µF (exact match required)
• Rated voltage: 450 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)

Mechanical Parameters:

• Package type: Radial, Can - Snap-In (exact match required)
• Mounting type: Through Hole (exact match required)
• Lead spacing: 0.394" (10.00mm) (exact match required)

Compliance Parameters:

• RoHS3 Compliant status (required)
• Operating temperature range: -40°C ~ 105°C (required)

The substitute part B43508B5337M000 meets all critical electrical and mechanical parameters. Physical dimensions show minor variations in diameter and height, which remain within acceptable tolerances for snap-in can mounting applications. Enhanced lifetime rating (3000 Hrs @ 105°C versus 1000 Hrs @ 105°C) and lower ESR characteristics represent performance improvements without compromising compatibility.

Parameter Comparison

Engineering Selection Recommendations

LP331M450H7P3 (Primary Part): Select this part when Cornell Dubilier Electronics sourcing is specified or preferred. Active product status ensures continued availability. RoHS3 compliance and REACH unaffected designation meet regulatory requirements. Suitable for applications where the 1000 Hrs @ 105°C lifetime specification is sufficient.

B43508B5337M000 (Substitute Part): This EPCOS - TDK Electronics part provides direct functional equivalence with enhanced performance characteristics. The 3000 Hrs @ 105°C lifetime rating provides extended operational durability. Lower ESR (370 mOhm @ 100Hz) improves ripple current handling and thermal performance. Active product status and full RoHS3/REACH compliance ensure regulatory alignment. Physical dimension variations (smaller diameter, slightly taller height) remain compatible with snap-in mounting applications and standard PCB layouts.

Both parts maintain identical electrical specifications (330 µF, 450 V, ±20% tolerance) and mechanical compatibility (Through Hole, Radial Can - Snap-In, 10.00mm lead spacing). Selection between these parts depends on supplier availability, cost considerations, and performance enhancement requirements.

Frequently Asked Questions (FAQ)

Q: Can B43508B5337M000 be used as a direct replacement for LP331M450H7P3?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (450 V), tolerance (±20%), polarization (Polar), package type (Radial, Can - Snap-In), mounting type (Through Hole), and lead spacing (10.00mm). Operating temperature range (-40°C ~ 105°C) and compliance certifications (RoHS3, REACH unaffected) are equivalent.

Q: What are the physical dimension differences?

A: The LP331M450H7P3 has a diameter of 1.378" (35.00mm) and height of 1.575" (40.00mm). The B43508B5337M000 has a diameter of 1.181" (30.00mm) and height of 1.654" (42.00mm). These variations remain within acceptable tolerances for snap-in can mounting and do not affect electrical compatibility or PCB layout compatibility.

Q: Does the substitute part offer performance improvements?

A: The B43508B5337M000 provides a 3000 Hrs @ 105°C lifetime rating compared to 1000 Hrs @ 105°C for the LP331M450H7P3, representing a 3x improvement in thermal endurance. The specified ESR of 370 mOhm @ 100Hz enables better ripple current performance and reduced thermal generation.

Q: Are both parts RoHS3 compliant?

A: Yes. Both LP331M450H7P3 and B43508B5337M000 are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

Q: What is the lead spacing compatibility?

A: Both parts have identical lead spacing of 0.394" (10.00mm), ensuring direct PCB footprint compatibility without layout modifications.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. Electrical parameters, mechanical mounting, and lead spacing are equivalent. Existing PCB designs and circuit implementations require no modification for substitution.