CAP-45/440 Equivalent & Substitute Parts

Part Overview

The CAP-45/440 is a 45 µF aluminum electrolytic capacitor rated for 440 V operation, designed for motor run applications in HVAC systems. This component features radial, can-style construction with QC (quick connect) terminals and is rated for 60,000 hours of operation at 70°C. The part maintains Active product status with 1,056 units currently in stock. Substitute parts are identified when electrical specifications, mechanical form factors, and operational ratings remain identical across manufacturers or product variants, ensuring direct functional equivalence in circuit applications.

Substiute Parts

CAP-45/440

Hartland Controls/LittelfuseIn Stock: 1125CAP-45/440 Datasheet

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CAP-45/440R

Hartland Controls/LittelfuseIn Stock: 989CAP-45/440R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CAP-45/440 is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 45 µF (exact match required)
• Voltage Rating: 440 V (exact match required)
• Tolerance: ±3% (exact match required)
• Lifetime Rating: 60,000 Hrs @ 70°C (exact match required)
• Operating Temperature Range: -40°C ~ 70°C (exact match required)
• Package Configuration: Radial, Can - QC Terminals (exact match required)
• Mounting Type: Chassis Mount (exact match required)
• Polarization: Polar (exact match required)

The CAP-45/440R qualifies as a direct substitute because all electrical and mechanical parameters are identical to the main part. Both components are manufactured by Hartland Controls/Littelfuse within the HCK Motor Run series and maintain Active product status. The substitution is valid for direct replacement in HVAC motor run applications without circuit modification or performance degradation.

Parameter Comparison

Engineering Selection Recommendations

Both CAP-45/440 and CAP-45/440R are Active products manufactured by Hartland Controls/Littelfuse and carry identical electrical and mechanical specifications. Selection between these parts is based on inventory availability and supply chain considerations rather than technical performance differences.

The CAP-45/440 maintains higher current inventory at 1,056 units, providing greater availability for immediate procurement. The CAP-45/440R, with 932 units in stock, serves as a viable alternative when primary stock is depleted or when supply chain optimization requires component rotation.

Both parts comply with ECCN EAR99 classification and are suitable for direct substitution in HVAC motor run circuits. No circuit redesign, thermal analysis, or performance testing is required when transitioning between these components.

Frequently Asked Questions (FAQ)

Q: Can CAP-45/440R replace CAP-45/440 in existing HVAC motor run applications?

A: Yes. The CAP-45/440R is a direct substitute with identical capacitance (45 µF), voltage rating (440 V), tolerance (±3%), lifetime rating (60,000 Hrs @ 70°C), operating temperature range (-40°C ~ 70°C), package configuration (Radial, Can - QC Terminals), and mounting type (Chassis Mount). No circuit modification is required.

Q: Are there any differences in the QC terminal specifications between these parts?

A: No. Both components feature identical QC (quick connect) terminal configurations as part of the Radial, Can package type. Terminal compatibility is assured for direct board-level replacement.

Q: What is the significance of the part number suffix "R" in CAP-45/440R?

A: The "R" designation indicates a variant within the same product family. All electrical and mechanical parameters remain identical to the base CAP-45/440 model. The suffix does not indicate a revision, upgrade, or performance change.

Q: Can these capacitors be used interchangeably in the same circuit?

A: Yes. Both parts are rated for identical operating conditions, temperature ranges, and HVAC applications. They are fully interchangeable at the component level without affecting circuit performance or reliability.

Q: What is the Moisture Sensitivity Level (MSL) rating, and does it affect substitution?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. This rating is identical across both components and does not impact substitution eligibility.

Q: Are there any compliance or certification differences between CAP-45/440 and CAP-45/440R?

A: Both parts carry identical ECCN EAR99 classification. The HTSUS codes differ slightly (8532.22.0085 vs. 8532.22.0055), reflecting tariff classification variations that do not affect technical compatibility or functional performance.