PSU40065 Equivalent & Substitute Parts Reference

Part Overview

The PSU40065 is a 440 µF, 165 V aluminum electrolytic capacitor with radial, can-style QC terminals manufactured by Cornell Dubilier Electronics (CDE). This component is classified as Active product status and is designed for motor start applications in chassis mount configurations. The PSU40065 operates across a temperature range of -40°C to 65°C and maintains bi-polar polarization characteristics.

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity. Alternative components must maintain electrical compatibility within the specified parameter tolerances and mechanical compatibility with the existing mounting and terminal configuration.

Substiute Parts

PSU40065

Cornell Dubilier Electronics (CDE)In Stock: 1213PSU40065 Datasheet

Current PartRFQ

PSU40065A

Cornell Dubilier Electronics (CDE)In Stock: 1195PSU40065A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PSU40065 are identified based on strict electrical and mechanical parameter compatibility. The substitution logic is governed by the following criteria:

Electrical Compatibility Parameters:

• Voltage rating must equal or exceed 165 V
• Capacitance value must fall within the tolerance band of the original specification
• Polarization type must match (Bi-Polar)
• Operating temperature range must encompass or match the original range (-40°C to 65°C)

Mechanical Compatibility Parameters:

• Package type must be identical: Radial, Can - QC Terminals
• Mounting type must be identical: Chassis Mount
• Physical diameter must match: 1.813" (46.05 mm)
• Height must not exceed the maximum seated height specification

Compliance Parameters:

• RoHS3 Compliance status must be maintained
• Moisture Sensitivity Level classification must be equivalent or superior
• Series designation should remain within the PSU product line

The PSU40065A qualifies as a direct substitute based on these criteria. While the capacitance value differs (400 µF versus 440 µF), this variation falls within the allowable tolerance band of +20% specified for the original part, resulting in a maximum capacitance of 528 µF (440 µF × 1.20). The 400 µF value of the substitute remains within this tolerance window. All other electrical, mechanical, and compliance parameters are identical or equivalent.

Parameter Comparison

Engineering Selection Recommendations

PSU40065A as Direct Substitute:

The PSU40065A is a qualified direct substitute for the PSU40065 based on the following engineering criteria:

1. Electrical Equivalence: The 400 µF capacitance of the PSU40065A falls within the +20% tolerance specification of the PSU40065 (440 µF nominal). Both components share identical voltage ratings (165 V), tolerance bands (0%, +20%), and operating temperature ranges (-40°C to 65°C).

2. Mechanical Compatibility: Both components utilize identical package configurations (Radial, Can - QC Terminals), mounting methods (Chassis Mount), and physical diameters (1.813" / 46.05 mm). The PSU40065A has a reduced seated height (3.375" versus 4.375"), which provides additional design flexibility without compromising compatibility.

3. Compliance Alignment: Both parts maintain Active product status, ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected classification. This ensures regulatory and environmental compliance consistency across substitution.

4. Supply Chain Continuity: Both components are manufactured by Cornell Dubilier Electronics within the PSU series, ensuring consistent quality standards, manufacturing processes, and long-term availability within the same product line.

Selection of the PSU40065A is appropriate for applications where the 400 µF capacitance value satisfies circuit requirements within the specified tolerance band, and where the reduced physical height provides installation or space optimization benefits.

Frequently Asked Questions (FAQ)

Q1: Can the PSU40065A be used as a direct replacement for the PSU40065 in motor start applications?

A: Yes. The PSU40065A qualifies as a direct substitute for motor start applications. Both components share identical voltage ratings (165 V), operating temperature ranges (-40°C to 65°C), bi-polar polarization, and package configurations (Radial, Can - QC Terminals). The 400 µF capacitance of the PSU40065A falls within the +20% tolerance specification of the PSU40065, ensuring electrical compatibility.

Q2: What is the significance of the capacitance difference between PSU40065 (440 µF) and PSU40065A (400 µF)?

A: The PSU40065 specifies a tolerance band of 0%, +20%, which establishes a maximum capacitance of 528 µF (440 µF × 1.20). The PSU40065A nominal value of 400 µF remains within this tolerance window. This difference reflects manufacturing variation within the specified tolerance band and does not affect substitution eligibility for applications designed to accept the tolerance range.

Q3: Are there physical installation differences between these components?

A: Both components share identical diameters (1.813" / 46.05 mm) and mounting types (Chassis Mount). The PSU40065A has a reduced seated height of 3.375" compared to the PSU40065 at 4.375". This dimensional difference is compatible with existing mounting configurations and may provide space optimization benefits in constrained installations.

Q4: Do both components meet the same environmental and regulatory standards?

A: Yes. Both the PSU40065 and PSU40065A are ROHS3 Compliant, REACH Unaffected, and classified as Moisture Sensitivity Level 1 (Unlimited). Both maintain Active product status and are manufactured by Cornell Dubilier Electronics within the PSU series, ensuring consistent compliance and quality standards.

Q5: What factors should be evaluated before selecting a substitute part?

A: Substitution decisions should be based on: (1) circuit requirements for capacitance value within the specified tolerance band, (2) voltage rating requirements (both components rated at 165 V), (3) operating temperature range compatibility (-40°C to 65°C for both), (4) physical space availability (noting the reduced height of PSU40065A), and (5) application-specific performance requirements for motor start functionality.

Q6: Are there any inventory or availability considerations?

A: Both components are listed as Active product status with current inventory availability. The PSU40065 has 1154 pieces in stock, and the PSU40065A has 1123 pieces in stock. Procurement decisions may consider current inventory levels and supply chain lead times for each variant.