PSU18965B Equivalent & Substitute Parts Reference

Part Overview

The PSU18965B is a 189 µF, 165 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in the PSU series. This radial, can-style capacitor with QC terminals is designed for motor start applications and operates across a temperature range of -40°C to 65°C. The part maintains Active product status and is ROHS3 compliant. Substitute parts are identified to address inventory availability, lead time requirements, or specific mechanical constraints in chassis mount applications.

Substiute Parts

PSU18965B

Cornell Dubilier Electronics (CDE)In Stock: 1150PSU18965B Datasheet

Current PartRFQ

PSU18965C

Cornell Dubilier Electronics (CDE)In Stock: 1105PSU18965C Datasheet

DirectRFQ

PSU18965B

Cornell Dubilier Electronics (CDE)In Stock: 1150PSU18965B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for PSU18965B is determined by strict equivalence across the following parameters:

• Electrical Parameters: Capacitance (189 µF), voltage rating (165 V), tolerance (0%, +20%), and bi-polar polarization must be identical
• Mechanical Parameters: Package type (Radial, Can - QC Terminals), mounting type (Chassis Mount), and diameter (1.438" / 36.53 mm) must match
• Environmental & Compliance: Operating temperature range (-40°C to 65°C), RoHS3 compliance, and REACH unaffected status must be maintained
• Product Status: Only Active status parts qualify as substitutes

The substitute part PSU18965C meets all electrical and environmental criteria. The primary distinction is the seated height dimension: PSU18965C measures 2.750" (69.85 mm) versus PSU18965B at 3.375" (85.73 mm). This height difference is a mechanical constraint that determines suitability based on available chassis space.

Parameter Comparison

Engineering Selection Recommendations

PSU18965B Selection Criteria:

• Use PSU18965B when chassis design accommodates the maximum seated height of 3.375" (85.73 mm)
• Suitable for applications with vertical or unrestricted mounting space
• Active product status with 1045 units in stock ensures availability

PSU18965C Selection Criteria:

• Use PSU18965C when space constraints limit component height to 2.750" (69.85 mm) or less
• Provides identical electrical performance and compliance certifications
• Active product status with 1039 units in stock
• Compact form factor for space-restricted chassis designs

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. Selection between PSU18965B and PSU18965C is determined solely by available mounting height in the target application. All other electrical, environmental, and mechanical parameters are equivalent.

Frequently Asked Questions (FAQ)

Q: Can PSU18965C replace PSU18965B in any application? A: PSU18965C is electrically and functionally equivalent to PSU18965B. Substitution is valid only if the available chassis mounting height accommodates the reduced seated height of 2.750" (69.85 mm). If the original design requires 3.375" (85.73 mm) height, PSU18965C is not suitable.

Q: Are the electrical specifications identical between PSU18965B and PSU18965C? A: Yes. Both parts share identical capacitance (189 µF), voltage rating (165 V), tolerance (0%, +20%), polarization (Bi-Polar), operating temperature range (-40°C to 65°C), and package type (Radial, Can - QC Terminals).

Q: What is the only difference between these two parts? A: The seated height dimension. PSU18965B measures 3.375" (85.73 mm) maximum height, while PSU18965C measures 2.750" (69.85 mm) maximum height. Both maintain the same 1.438" (36.53 mm) diameter.

Q: Do both parts meet the same compliance standards? A: Yes. Both PSU18965B and PSU18965C are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8532.22.0055.

Q: Which part should I select for a new design? A: Evaluate your available mounting height. If space is unrestricted, either part is acceptable. If height is limited to 2.750" (69.85 mm) or less, PSU18965C is required. If your design requires exactly 3.375" (85.73 mm) or greater height, PSU18965B is necessary.

Q: Are there any performance differences in motor start applications? A: No. Both parts are rated for motor start applications and deliver identical electrical performance across the specified operating temperature range.