Equivalent & Substitute Parts for 478LBA025M2AC

Part Overview

The Cornell Dubilier / Illinois Capacitor 478LBA025M2AC is a 4700 µF, 25 V aluminum electrolytic capacitor in radial, can snap-in package configuration. This component is classified as Active product status and serves general-purpose applications requiring high capacitance energy storage in through-hole mounting designs. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

478LBA025M2AC

Cornell Dubilier / Illinois CapacitorIn Stock: 878478LBA025M2AC Datasheet

Current PartRFQ

25MXG4700MEFCSN20X25

RubyconIn Stock: 116825MXG4700MEFCSN20X25 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 478LBA025M2AC is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance: 4700 µF (exact match required)
• Voltage Rating: 25 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)

Mechanical Parameters:

• Package Type: Radial, Can - Snap-In (exact match required)
• Lead Spacing: 0.394" (10.00mm) (exact match required)
• Size / Dimension: 0.787" Dia (20.00mm) (exact match required)
• Height - Seated (Max): 1.063" (27.00mm) (exact match required)
• Mounting Type: Through Hole (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

The substitute part 25MXG4700MEFCSN20X25 (Rubycon MXG series) meets all critical electrical, mechanical, and compliance requirements for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

Substitution Eligibility:

The Rubycon 25MXG4700MEFCSN20X25 qualifies as a direct substitute for the Cornell Dubilier 478LBA025M2AC based on:

1. Electrical Equivalence: Both components share identical capacitance (4700 µF), voltage rating (25 V), and tolerance (±20%) specifications.

2. Mechanical Compatibility: Both parts feature identical package configuration (Radial, Can - Snap-In), lead spacing (10.00mm), physical dimensions (20.00mm diameter, 27.00mm maximum height), and through-hole mounting type. PCB layout and mechanical assembly requirements are interchangeable.

3. Compliance Alignment: Both components maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), ensuring regulatory and environmental compatibility.

4. Product Status: Both components carry Active product status, confirming ongoing manufacturer support and availability.

Performance Considerations:

The Rubycon substitute demonstrates extended operational capabilities: rated lifetime of 3000 hours at 105°C compared to 2000 hours at 85°C for the Cornell Dubilier part, and maximum operating temperature of 105°C versus 85°C. These enhancements provide margin for thermal stress conditions.

Ripple current specifications differ between the two parts. The Cornell Dubilier 478LBA025M2AC specifies 2.18 A at 120 Hz and 2.725 A at 10 kHz, while the Rubycon 25MXG4700MEFCSN20X25 specifies 1.65 A at 120 Hz and 1.8975 A at 10 kHz. Circuit designs dependent on ripple current capacity at or above the Rubycon specification levels require evaluation against actual application requirements.

Frequently Asked Questions (FAQ)

Q: Can the Rubycon 25MXG4700MEFCSN20X25 be used as a direct replacement for the Cornell Dubilier 478LBA025M2AC in existing designs?

A: Yes. Both components share identical electrical specifications (4700 µF, 25 V, ±20% tolerance), mechanical dimensions (20.00mm diameter, 27.00mm height, 10.00mm lead spacing), and package configuration (Radial, Can - Snap-In). PCB layout and assembly procedures require no modification.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer identity (Cornell Dubilier versus Rubycon) and series designation (LBA versus MXG). The Rubycon part offers extended lifetime rating (3000 hours at 105°C versus 2000 hours at 85°C) and higher maximum operating temperature (105°C versus 85°C). Ripple current specifications are lower for the Rubycon part across both frequency ranges.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both components are ROHS3 compliant, carry Moisture Sensitivity Level 1 (Unlimited), and maintain Active product status. Regulatory and environmental requirements are equivalent.

Q: How do the ripple current ratings affect component selection?

A: Ripple current capacity determines the maximum AC current the capacitor can safely handle without exceeding temperature limits. The Cornell Dubilier part supports higher ripple current (2.18 A @ 120 Hz, 2.725 A @ 10 kHz) compared to the Rubycon part (1.65 A @ 120 Hz, 1.8975 A @ 10 kHz). Applications requiring ripple current above the Rubycon specification must use the Cornell Dubilier part or identify alternative components with higher ripple current ratings.

Q: What is the significance of the different lifetime ratings?

A: Lifetime rating indicates the expected operational duration at specified temperature conditions. The Rubycon part's 3000-hour rating at 105°C represents extended service life compared to the Cornell Dubilier part's 2000-hour rating at 85°C. Higher temperature operation generally reduces component lifetime; the Rubycon specification reflects capability at elevated temperature.

Q: Are these parts interchangeable in high-temperature applications?

A: The Rubycon 25MXG4700MEFCSN20X25 supports operation to 105°C maximum, while the Cornell Dubilier 478LBA025M2AC is rated to 85°C maximum. For applications operating above 85°C, the Rubycon part provides extended temperature margin. For applications operating below 85°C, both parts are suitable.