477LBB250M2CE Equivalent & Substitute Parts

Part Overview

The 477LBB250M2CE is a 470 µF, 250 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LBB series. This radial, can-type snap-in component is rated for general purpose applications with an operating temperature range of -40°C to 85°C and a lifetime of 3000 hours at 85°C. The part is RoHS3 compliant and currently active in production. Equivalent and substitute parts are necessary when the original manufacturer part becomes unavailable, when supply chain requirements demand alternative sourcing, or when application specifications allow for compatible alternatives with improved electrical characteristics or extended operational capabilities.

Substiute Parts

477LBB250M2CE

Cornell Dubilier / Illinois CapacitorIn Stock: 1059477LBB250M2CE Datasheet

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381LR471M250J032

Cornell Dubilier Electronics (CDE)In Stock: 3587381LR471M250J032 Datasheet

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B43501C2477M000

EPCOS - TDK ElectronicsIn Stock: 274142B43501C2477M000 Datasheet

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B43509F2477M000

EPCOS - TDK ElectronicsIn Stock: 1431B43509F2477M000 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 477LBB250M2CE is determined by strict electrical and mechanical compatibility criteria. All substitute parts must meet the following primary parameters:

• Capacitance Value: 470 µF (required match)
• Voltage Rating: 250 V (required match)
• Tolerance: ±20% (required match)
• Polarization: Polar (required match)
• Package Type: Radial, Can - Snap-In (required match)
• Lead Spacing: 0.394" (10.00mm) (required match)
• Physical Dimensions: 0.984" Dia × 1.457" Height Max (required match)
• Mounting Type: Through Hole (required match)
• RoHS Compliance: RoHS3 Compliant (required match)

The identified substitute parts—381LR471M250J032 (Cornell Dubilier Electronics), B43501C2477M000 (EPCOS - TDK Electronics), and B43509F2477M000 (EPCOS - TDK Electronics)—all satisfy these mandatory compatibility criteria. Secondary parameters such as equivalent series resistance (ESR), lifetime rating at temperature, and ripple current capacity may vary between alternatives and should be evaluated based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

381LR471M250J032 (Cornell Dubilier Electronics): This part is recommended for applications requiring extended operating temperature capability up to 105°C while maintaining equivalent mechanical and electrical compatibility. The part is in active production status, ensuring long-term availability. ESR characteristics are slightly higher than the original part, making it suitable for general purpose applications where the 3000-hour lifetime at 105°C provides operational flexibility.

B43501C2477M000 (EPCOS - TDK Electronics): This part offers superior electrical characteristics with the lowest ESR value (210 mOhm @ 100Hz) and the longest lifetime rating (10000 Hrs @ 85°C) among the substitutes. However, the product status is listed as "Not For New Designs," indicating that EPCOS - TDK Electronics is phasing out this series. Selection of this part should be limited to legacy systems or applications where existing inventory supports continued use.

B43509F2477M000 (EPCOS - TDK Electronics): This part is recommended for new designs requiring active, long-term supplier support from EPCOS - TDK Electronics. It offers the lowest ESR value (170 mOhm @ 100Hz) and extended temperature operation to 105°C. The part maintains RoHS3 compliance and REACH compliance status, supporting current environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the 477LBB250M2CE be replaced directly with any of the substitute parts? A: Yes. All three substitute parts—381LR471M250J032, B43501C2477M000, and B43509F2477M000—are direct replacements. They share identical capacitance, voltage rating, tolerance, physical dimensions, lead spacing, mounting type, and package configuration. No circuit board modifications or design changes are required for mechanical and electrical compatibility.

Q: What is the difference in ESR between the original part and the substitutes? A: The original 477LBB250M2CE has an ESR of 352.74 mOhm @ 120 Hz. The B43509F2477M000 offers the lowest ESR at 170 mOhm @ 100 Hz, followed by B43501C2477M000 at 210 mOhm @ 100 Hz, and 381LR471M250J032 at 423 mOhm @ 120 Hz. Lower ESR generally reduces heat dissipation and improves high-frequency performance.

Q: How do the lifetime ratings compare? A: The 477LBB250M2CE is rated for 3000 hours at 85°C. The B43501C2477M000 offers extended lifetime at 10000 hours at 85°C. Both 381LR471M250J032 and B43509F2477M000 maintain the 3000-hour rating but at an extended temperature of 105°C, providing thermal margin for applications operating at elevated ambient temperatures.

Q: Are there packaging or inventory considerations? A: All parts are available in bulk packaging. Inventory levels vary: the original 477LBB250M2CE has 991 pcs in stock, while B43501C2477M000 has the largest inventory at 274,082 pcs. The 381LR471M250J032 has 3524 pcs available, and B43509F2477M000 has 1376 pcs in stock.

Q: Which substitute should be selected for new product designs? A: For new designs, 381LR471M250J032 or B43509F2477M000 are recommended as both are in active production status. The B43501C2477M000, while offering superior electrical characteristics, carries a "Not For New Designs" product status designation and should not be selected for new development programs requiring long-term supplier support.

Q: What are the operating temperature considerations? A: The original part operates from -40°C to 85°C. Both 381LR471M250J032 and B43509F2477M000 extend the upper operating temperature limit to 105°C, providing a 20°C thermal margin. B43501C2477M000 maintains the original -40°C to 85°C range. Selection depends on the thermal environment of the target application.