CAP-25/440 Equivalent & Substitute Parts

Part Overview

The CAP-25/440 is a 25 µF, 440 V aluminum electrolytic capacitor with radial, can-style QC terminals manufactured by Hartland Controls/Littelfuse. This component is classified as a motor run capacitor for HVAC applications, rated for 60,000 hours at 70°C operating temperature. The part maintains Active product status with 748 units currently in stock. Substitute parts are identified when electrical specifications, mechanical packaging, and operational ratings remain equivalent across alternative part numbers within the same manufacturer series.

Substiute Parts

CAP-25/440

Hartland Controls/LittelfuseIn Stock: 841CAP-25/440 Datasheet

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CAP-25/440R

Hartland Controls/LittelfuseIn Stock: 858CAP-25/440R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CAP-25/440 is determined by equivalence across the following critical parameters:

• Capacitance Value: 25 µF (exact match required)
• Rated Voltage: 440 V (exact match required)
• Tolerance: ±3% (exact match required)
• Lifetime Rating: 60000 Hrs @ 70°C (exact match required)
• Operating Temperature Range: -40°C ~ 70°C (exact match required)
• Polarization: Polar (exact match required)
• Package Configuration: Radial, Can - QC Terminals (exact match required)
• Mounting Type: Chassis Mount (exact match required)
• Series Classification: HCK, Motor Run (exact match required)

The CAP-25/440R qualifies as a direct substitute based on identical electrical ratings, mechanical packaging, thermal specifications, and series designation. Both parts are manufactured by Hartland Controls/Littelfuse and maintain Active product status.

Parameter Comparison

Engineering Selection Recommendations

Both CAP-25/440 and CAP-25/440R are qualified substitutes for motor run capacitor applications in HVAC systems. Selection between these parts is based on the following engineering criteria:

CAP-25/440: Primary part number with 748 units in current inventory. Maintains full compliance with HVAC motor run specifications and all electrical/mechanical parameters.

CAP-25/440R: Direct substitute with 820 units in current inventory. Identical electrical ratings, thermal performance, and mechanical configuration. Higher inventory availability supports supply chain continuity.

Both parts carry Active product status, MSL Level 1 (Unlimited moisture sensitivity), and ECCN EAR99 export classification. Component selection should be based on inventory availability and procurement lead time requirements, as electrical and mechanical performance are equivalent.

Frequently Asked Questions (FAQ)

Q: Can CAP-25/440R be used as a direct replacement for CAP-25/440 in HVAC motor run applications?

A: Yes. CAP-25/440R is a direct substitute. Both parts share identical capacitance (25 µF), voltage rating (440 V), tolerance (±3%), thermal lifetime (60000 Hrs @ 70°C), operating temperature range (-40°C ~ 70°C), polarization (Polar), package configuration (Radial, Can - QC Terminals), and mounting type (Chassis Mount). Both are classified within the HCK Motor Run series.

Q: Are there any differences in the physical dimensions or terminal configuration between these parts?

A: No dimensional or terminal configuration differences are specified in the provided parameters. Both parts utilize identical QC terminal packaging and radial, can-style construction for chassis mount applications.

Q: What is the significance of the part number suffix "R" in CAP-25/440R?

A: The "R" designation does not indicate a functional or electrical difference. Both CAP-25/440 and CAP-25/440R maintain equivalent specifications across all provided parameters. The suffix may reflect internal manufacturing or inventory tracking conventions.

Q: Which part should be selected for new designs or replacements?

A: Selection between CAP-25/440 and CAP-25/440R is determined by inventory availability and procurement requirements. Both parts are Active, fully qualified, and electrically/mechanically equivalent. CAP-25/440R currently has higher inventory (820 units versus 748 units).

Q: Are these capacitors suitable for continuous operation at maximum rated voltage and temperature?

A: Both parts are rated for 60,000 hours of operation at 70°C and 440 V. Operating temperature range is -40°C to 70°C. Application-specific duty cycles and thermal management should be evaluated within system design parameters.

Q: What compliance certifications apply to these capacitors?

A: Both parts carry ECCN EAR99 classification and HTSUS code 8532.22.0085 (CAP-25/440) or 8532.22.0055 (CAP-25/440R). MSL Level 1 (Unlimited) indicates no moisture sensitivity restrictions during storage or handling.