477LBA250M2CF Equivalent & Substitute Parts Reference

Part Overview

The 477LBA250M2CF is a 470 µF, 250 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LBA series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring through-hole mounting. The part is currently active in production with 641 pieces in stock. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits functional alternatives within specified electrical and mechanical parameters.

Substiute Parts

477LBA250M2CF

Cornell Dubilier / Illinois CapacitorIn Stock: 680477LBA250M2CF Datasheet

Current PartRFQ

250USG470MEFCSN25X25

RubyconIn Stock: 1139250USG470MEFCSN25X25 Datasheet

DirectRFQ

380LX471M250J042

Cornell Dubilier Electronics (CDE)In Stock: 5086380LX471M250J042 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 477LBA250M2CF are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Capacitance: 470 µF
• Voltage Rating: 250 V
• Tolerance: ±20%
• Polarization: Polar

Mechanical Parameters (Must Match):

• Package Type: Radial, Can - Snap-In
• Mounting Type: Through Hole
• Lead Spacing: 0.394" (10.00mm)
• Case Diameter: 0.984" (25.00mm)

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Operating Temperature Range: -40°C ~ 85°C

The following parts meet all substitution criteria:

1. 250USG470MEFCSN25X25 (Rubycon USG Series)
2. 380LX471M250J042 (Cornell Dubilier Electronics 380LX Series)

Parameter Comparison

Engineering Selection Recommendations

Substitution Basis:

All substitute parts listed are active products with ROHS3 compliance and meet the core electrical and mechanical specifications of the 477LBA250M2CF. Selection among qualified substitutes is determined by the following factors:

250USG470MEFCSN25X25 (Rubycon USG Series):

• Meets all electrical and mechanical requirements
• Provides extended lifetime rating of 3000 hours at 85°C compared to 2000 hours for the main part
• Compact height of 1.063" (27.00mm) provides space advantage in height-constrained applications
• Higher ripple current capability at 10 kHz (3.165 A) supports higher frequency operation
• Suitable for applications where reduced board height is beneficial

380LX471M250J042 (Cornell Dubilier Electronics 380LX Series):

• Meets all electrical and mechanical requirements
• Provides extended lifetime rating of 3000 hours at 85°C
• Significantly lower ESR of 39 mOhm at 120 Hz compared to 529.11 mOhm for the main part, reducing heat generation and improving efficiency
• Identical height profile (1.654" / 42.00mm) to the main part, ensuring direct mechanical compatibility
• Highest inventory availability (5041 pieces) among all options
• Preferred for applications requiring low impedance performance and thermal management

Both substitute parts maintain full compliance with operating temperature range, polarization, and regulatory requirements. Selection should be based on specific application requirements regarding physical space constraints, thermal performance needs, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the 250USG470MEFCSN25X25 be used as a direct replacement for the 477LBA250M2CF?

A: Yes. Both parts share identical electrical specifications (470 µF, 250 V, ±20% tolerance), package type (radial, can-style snap-in), mounting method (through-hole), lead spacing (10.00mm), and case diameter (25.00mm). The primary difference is the reduced height (27.00mm vs. 42.00mm), which is compatible with PCB layouts designed for the original part. Extended lifetime (3000 hours vs. 2000 hours at 85°C) provides additional margin.

Q: Can the 380LX471M250J042 be used as a direct replacement for the 477LBA250M2CF?

A: Yes. Both parts share identical electrical specifications (470 µF, 250 V, ±20% tolerance), package type (radial, can-style snap-in), mounting method (through-hole), lead spacing (10.00mm), case diameter (25.00mm), and height (42.00mm). The significantly lower ESR (39 mOhm vs. 529.11 mOhm at 120 Hz) improves thermal performance in ripple-current-intensive applications.

Q: What is the significance of ESR differences between these parts?

A: Equivalent Series Resistance (ESR) directly affects heat generation and voltage ripple performance. The 380LX471M250J042 with 39 mOhm ESR generates substantially less heat than the 477LBA250M2CF with 529.11 mOhm ESR under identical ripple current conditions. Lower ESR is advantageous in high-frequency switching applications and environments with thermal constraints.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 477LBA250M2CF, 250USG470MEFCSN25X25, and 380LX471M250J042 are all ROHS3 compliant and suitable for applications requiring RoHS certification.

Q: What is the difference in lifetime ratings?

A: The 477LBA250M2CF is rated for 2000 hours at 85°C. Both substitute parts (250USG470MEFCSN25X25 and 380LX471M250J042) are rated for 3000 hours at 85°C, providing 50% extended operational life under identical thermal conditions.

Q: Which substitute part should be selected for space-constrained applications?

A: The 250USG470MEFCSN25X25 offers a compact height of 27.00mm compared to 42.00mm for both the main part and the 380LX471M250J042. This 15mm reduction is significant in applications with limited vertical clearance on the PCB.

Q: Which substitute part should be selected for high-ripple-current applications?

A: The 380LX471M250J042 is preferred for high-ripple-current applications due to its significantly lower ESR (39 mOhm), which minimizes heat generation and voltage ripple. The 250USG470MEFCSN25X25 also provides improved ripple current handling (3.165 A at 10 kHz) compared to the main part (2.9841 A at 10 kHz).

Q: Are there any mechanical compatibility concerns when substituting these parts?

A: No. All three parts use identical lead spacing (10.00mm) and case diameter (25.00mm), ensuring PCB footprint compatibility. The 250USG470MEFCSN25X25 has reduced height (27.00mm), which is compatible with layouts designed for taller components. The 380LX471M250J042 matches the original height (42.00mm) exactly.