PSU24315A Equivalent & Substitute Parts Reference

Part Overview

The PSU24315A is a 243 µF, 125 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in the PSU series. This radial, can-style component with QC terminals is designed for motor start applications and operates across a temperature range of -40°C to 65°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when inventory constraints, lead time requirements, or application-specific mechanical considerations necessitate alternative sourcing while maintaining electrical compatibility.

Substiute Parts

PSU24315A

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

Current PartRFQ

PSU24315B

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PSU24315A is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Capacitance value: 243 µF
• Voltage rating: 125 V
• Tolerance: 0%, +20%
• Polarization: Bi-Polar

Mechanical Parameters (Non-Negotiable):

• Package type: Radial, Can - QC Terminals
• Mounting type: Chassis Mount
• Diameter: 1.438" (36.53 mm)

Environmental & Compliance Parameters:

• Operating temperature range: -40°C to 65°C
• RoHS status: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

The PSU24315B qualifies as a direct substitute because it maintains identical electrical specifications, package configuration, mounting type, and diameter. The only variance is in the seated height dimension (2.750" vs. 3.375"), which represents a mechanical tolerance variation within the same product family and does not affect electrical performance or functional compatibility in motor start applications.

Parameter Comparison

Engineering Selection Recommendations

Both PSU24315A and PSU24315B are active production parts from Cornell Dubilier Electronics with full ROHS3 compliance and identical electrical specifications. Selection between these parts should be based on the following criteria:

PSU24315A Selection Criteria:

• Applications requiring maximum seated height of 3.375" (85.73 mm)
• Designs with vertical clearance constraints that accommodate the taller profile
• Current inventory availability: 909 pieces

PSU24315B Selection Criteria:

• Applications with space constraints requiring a compact profile of 2.750" (69.85 mm)
• Designs where reduced height improves mechanical fit or thermal management
• Current inventory availability: 739 pieces

Both parts maintain identical electrical performance in motor start applications across the full operating temperature range of -40°C to 65°C. The height differential does not affect capacitance, voltage rating, tolerance, or polarization characteristics. Component selection should prioritize mechanical fit requirements within the target application.

Frequently Asked Questions (FAQ)

Q: Can PSU24315B replace PSU24315A in all applications?

A: PSU24315B provides electrical equivalence to PSU24315A. The primary consideration is mechanical fit. PSU24315B has a seated height of 2.750" compared to PSU24315A's 3.375". If the application accommodates the shorter height, PSU24315B is a direct substitute. If the design requires the taller profile, PSU24315A must be used.

Q: Are the electrical specifications identical between PSU24315A and PSU24315B?

A: Yes. Both parts have identical capacitance (243 µF), voltage rating (125 V), tolerance (0%, +20%), polarization (Bi-Polar), and operating temperature range (-40°C to 65°C). They are electrically interchangeable.

Q: What is the significance of the QC terminal designation?

A: QC terminals refer to quick-connect terminals on the radial can package. Both PSU24315A and PSU24315B use identical QC terminal configurations, ensuring mechanical and electrical compatibility in chassis mount applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both PSU24315A and PSU24315B are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (unlimited moisture sensitivity). They meet identical regulatory and environmental standards.

Q: What is the only difference between these two parts?

A: The seated height dimension. PSU24315A measures 3.375" (85.73 mm) maximum seated height, while PSU24315B measures 2.750" (69.85 mm) maximum seated height. All other specifications are identical.

Q: Can I use PSU24315A in place of PSU24315B?

A: PSU24315A can replace PSU24315B only if the application has sufficient vertical clearance to accommodate the additional 0.625" (15.88 mm) height. If space is constrained, PSU24315A will not fit.