PSU4335C Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The PSU4335C is a 43 µF, 250 V aluminum electrolytic capacitor with radial leads and QC terminals, manufactured by Cornell Dubilier Electronics (CDE). This component is classified as active and designed for motor start applications requiring chassis mount configuration. The PSU series capacitors feature bi-polar polarization, enabling use in AC circuits where polarity reversal may occur. Finding equivalent substitute parts is necessary when addressing supply chain constraints, managing inventory optimization, or accommodating design revisions that may benefit from alternative mechanical configurations within the same electrical specifications.

Substiute Parts

PSU4335C

Cornell Dubilier Electronics (CDE)In Stock: 809PSU4335C Datasheet

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PSU4335B

Cornell Dubilier Electronics (CDE)In Stock: 927PSU4335B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PSU4335C with alternative parts is based on electrical parameter equivalence and mechanical compatibility criteria. The substitute PSU4335B maintains identical electrical specifications: 43 µF capacitance, 250 V voltage rating, ±20% tolerance, and bi-polar polarization. Both components operate within the same temperature range (-40°C to 65°C) and share the same package type (Radial, Can - QC Terminals) with chassis mount configuration.

The primary distinction between PSU4335C and PSU4335B is the physical height dimension. This mechanical variation does not affect electrical performance or substitutability in applications where vertical clearance permits the alternative height specification. Both parts are manufactured by Cornell Dubilier Electronics, maintaining series consistency, product status classification as active components, and identical compliance certifications (ROHS3 Compliant, MSL Level 1).

Parameter Comparison

Engineering Selection Recommendations

The PSU4335B is an equivalent substitute for the PSU4335C in applications where the increased height of 3.435 inches (87.25 mm) compared to 2.750 inches (69.85 mm) is accommodated within the assembly envelope. Both parts maintain active product status within the PSU series and carry identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and MSL Level 1 rating.

Selection between these two parts should be based on available vertical clearance in the PCB or chassis assembly. The PSU4335C is suitable for space-constrained applications, while the PSU4335B offers the same electrical performance in designs with greater height tolerance. Inventory availability should also be considered, as the PSU4335B currently has higher stock levels (850 Pcs) compared to PSU4335C (789 Pcs).

Frequently Asked Questions (FAQ)

Q: Are PSU4335C and PSU4335B electrically equivalent? A: Yes. Both parts share identical electrical specifications: 43 µF capacitance, 250 V voltage rating, ±20% tolerance, and bi-polar polarization. They operate within the same temperature range and are suitable for identical applications.

Q: What is the primary difference between these parts? A: The PSU4335B has a greater height dimension (3.435 inches) compared to the PSU4335C (2.750 inches). Both maintain the same can diameter (1.438 inches) and all electrical characteristics.

Q: Can I substitute PSU4335B for PSU4335C in my design? A: Substitution is possible if your assembly design accommodates the additional 0.685 inches (17.4 mm) in height. The chassis mount configuration and QC terminal interface are identical.

Q: Are both parts RoHS compliant? A: Yes. Both PSU4335C and PSU4335B are ROHS3 Compliant and carry REACH Unaffected status.

Q: What is the moisture sensitivity level for these capacitors? A: Both parts carry MSL Level 1 (Unlimited) rating, indicating no special moisture control measures are required during storage or handling.

Q: Are these parts suitable for AC circuit applications? A: Yes. The bi-polar polarization of both PSU4335C and PSU4335B allows operation in AC circuits where polarity reversal may occur. These parts are designed for motor start applications.