LPX151M450C7P3 Equivalent & Substitute Parts

Part Overview

The LPX151M450C7P3 is a 150 µF, 450 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 with 938 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to component availability, supply chain considerations, or application-specific performance needs.

Substiute Parts

LPX151M450C7P3

Cornell Dubilier Electronics (CDE)In Stock: 975LPX151M450C7P3 Datasheet

Current PartRFQ

157LBB450M2CE

Cornell Dubilier / Illinois CapacitorIn Stock: 1046157LBB450M2CE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LPX151M450C7P3 is determined by strict equivalence in the following critical parameters:

Electrical Equivalence Requirements:

• Capacitance: 150 µF (exact match)
• Voltage Rating: 450 V (exact match)
• Tolerance: ±20% (exact match)
• Polarization: Polar (exact match)

Mechanical Equivalence Requirements:

• Package Type: Radial, Can - Snap-In (exact match)
• Mounting Type: Through Hole (exact match)
• Lead Spacing: 0.394" (10.00 mm) (exact match)
• Diameter: 0.984" (25.00 mm) (exact match)

Compliance Requirements:

• RoHS3 Compliant
• Operating Temperature Range: -40°C ~ 85°C

The substitute part 157LBB450M2CE meets all electrical and mechanical equivalence criteria. Variations in ESR, ripple current ratings, lifetime specifications, and physical height do not disqualify substitution when the core parameters match.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: LPX151M450C7P3

The LPX151M450C7P3 is the specified component and should be used when available. It is ROHS3 compliant, active in production, and carries a 1000-hour lifetime rating at 85°C with an ESR of 1.326 Ohm at 120 Hz.

Substitute Part: 157LBB450M2CE

The 157LBB450M2CE is a direct electrical and mechanical substitute. Both parts are manufactured by Cornell Dubilier or affiliated entities and are ROHS3 compliant. The substitute part offers an extended lifetime of 3000 hours at 85°C, which exceeds the primary part specification. The substitute has a reduced seated height of 1.378" (35.00 mm) compared to 1.575" (40.00 mm), which may provide advantages in space-constrained applications. Both parts operate across the identical temperature range of -40°C to 85°C and share identical lead spacing and diameter specifications, ensuring direct board-level compatibility.

Selection between these parts should be based on application requirements for lifetime performance, available board space, and component availability.

Frequently Asked Questions (FAQ)

Q: Can the 157LBB450M2CE be used as a direct replacement for the LPX151M450C7P3?

A: Yes. Both parts have identical capacitance (150 µF), voltage rating (450 V), tolerance (±20%), polarization (polar), lead spacing (10.00 mm), diameter (25.00 mm), and mounting type (through-hole radial snap-in). Both are ROHS3 compliant and operate across -40°C to 85°C.

Q: What are the differences between these two parts?

A: The primary differences are: (1) ESR at 120 Hz is 1.326 Ohm for LPX151M450C7P3 versus 1.65786 Ohm for 157LBB450M2CE; (2) Lifetime at 85°C is 1000 hours for LPX151M450C7P3 versus 3000 hours for 157LBB450M2CE; (3) Seated height is 1.575" (40.00 mm) for LPX151M450C7P3 versus 1.378" (35.00 mm) for 157LBB450M2CE; (4) Ripple current ratings differ at specified frequencies.

Q: Will the 157LBB450M2CE fit in the same PCB footprint as the LPX151M450C7P3?

A: Yes. Both parts have identical lead spacing (10.00 mm) and diameter (25.00 mm). The substitute part has a shorter seated height (35.00 mm versus 40.00 mm), which provides additional clearance and does not create a fit issue.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both the LPX151M450C7P3 and 157LBB450M2CE are ROHS3 compliant and REACH unaffected.

Q: Which part should I select for a new design?

A: Selection depends on application-specific requirements. If extended lifetime at elevated temperature is required, the 157LBB450M2CE with 3000-hour rating is suitable. If lower ESR is a design criterion, the LPX151M450C7P3 with 1.326 Ohm ESR is appropriate. Both parts meet the core electrical and mechanical specifications for general-purpose 150 µF, 450 V applications.