PSU24315B Equivalent & Substitute Parts Reference

Part Overview

The PSU24315B is a 243 µF, 125 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in the PSU series. This component is designed for motor start applications and features radial, can-style construction with QC (Quick Connect) terminals for chassis mount installation. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

PSU24315B

Cornell Dubilier Electronics (CDE)In Stock: 787PSU24315B Datasheet

Current PartRFQ

PSU24315A

Cornell Dubilier Electronics (CDE)In Stock: 997PSU24315A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PSU24315B is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Capacitance: 243 µF (exact match required)
• Voltage Rating: 125 V (exact match required)
• Tolerance: 0%, +20% (exact match required)
• Polarization: Bi-Polar (exact match required)
• Operating Temperature Range: -40°C to 65°C (exact match required)

Mechanical Parameters (Non-Negotiable):

• Package Type: Radial, Can - QC Terminals (exact match required)
• Mounting Type: Chassis Mount (exact match required)
• Diameter: 1.438" (36.53 mm) (exact match required)

Compliance Parameters:

• RoHS3 Compliance (required for all substitutes)
• Moisture Sensitivity Level 1 (required for all substitutes)

The PSU24315A qualifies as a direct substitute based on complete alignment with all electrical, mechanical, and compliance parameters. The only dimensional variance is seated height (2.750" for PSU24315B versus 3.375" for PSU24315A), which does not affect electrical performance or core mechanical compatibility in chassis mount applications where vertical clearance permits.

Parameter Comparison

Engineering Selection Recommendations

PSU24315B Selection Criteria:

• Primary choice when chassis mount applications have vertical height constraints of 2.750" (69.85 mm) or less
• Preferred for compact enclosure designs where space optimization is required
• Both PSU24315B and PSU24315A maintain identical electrical performance and full regulatory compliance (RoHS3, REACH Unaffected, EAR99 classification)

PSU24315A Selection Criteria:

• Direct substitute when vertical clearance permits the 3.375" (85.73 mm) seated height
• Suitable for applications where component height is not a limiting factor
• Equivalent electrical and thermal performance across the -40°C to 65°C operating range
• Both parts support motor start applications with identical capacitance, voltage rating, and tolerance specifications

Compliance & Regulatory Alignment: Both parts carry identical compliance certifications: RoHS3 Compliant, REACH Unaffected status, MSL 1 (Unlimited moisture sensitivity), and EAR99 ECCN classification. Selection between PSU24315B and PSU24315A is determined solely by available vertical mounting space in the target application.

Frequently Asked Questions (FAQ)

Q: Can PSU24315A be used as a direct replacement for PSU24315B?

A: PSU24315A is electrically and mechanically equivalent to PSU24315B across all critical parameters: 243 µF capacitance, 125 V rating, 0% to +20% tolerance, bi-polar polarization, -40°C to 65°C operating range, radial can package with QC terminals, and chassis mount configuration. The only difference is seated height (3.375" versus 2.750"). Substitution is valid provided the application permits the increased height.

Q: What is the primary dimensional difference between these parts?

A: Both parts share identical diameter (1.438" / 36.53 mm) and identical electrical specifications. The seated height differs: PSU24315B measures 2.750" (69.85 mm) maximum, while PSU24315A measures 3.375" (85.73 mm) maximum. This height variance does not affect electrical performance or QC terminal compatibility.

Q: Are both parts RoHS3 compliant?

A: Yes. Both PSU24315B and PSU24315A carry full RoHS3 compliance certification. Both are also REACH Unaffected and classified as EAR99 for export control purposes.

Q: What applications are these capacitors designed for?

A: Both parts are specified for motor start applications. The 243 µF capacitance at 125 V rating with bi-polar polarization supports motor starting circuits requiring temporary high-current pulse delivery.

Q: How does the QC terminal configuration affect substitution?

A: QC (Quick Connect) terminals are standardized across both parts, ensuring mechanical and electrical compatibility with motor start circuit connectors. The terminal configuration is identical between PSU24315B and PSU24315A, supporting direct substitution from a connection standpoint.

Q: What is the moisture sensitivity rating, and does it differ between parts?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Storage, handling, and soldering processes do not require special moisture control measures for either part.

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

A: Interchangeability is confirmed for electrical and thermal performance. Mechanical interchangeability depends on available vertical clearance. If the design accommodates 3.375" height, PSU24315A is a direct substitute. If height is limited to 2.750" or less, PSU24315B is required.