478LBB035M2CC Equivalent & Substitute Parts Reference

Part Overview

The 478LBB035M2CC is a 4700 µF, 35 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LBB series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high capacitance in a compact through-hole package. The part is Active status and ROHS3 compliant. Substitute parts are identified when inventory constraints, lead time requirements, or specific performance parameters necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

478LBB035M2CC

Cornell Dubilier / Illinois CapacitorIn Stock: 1078478LBB035M2CC Datasheet

Current PartRFQ

381LX472M035J012

Cornell Dubilier Electronics (CDE)In Stock: 5309381LX472M035J012 Datasheet

UpgradeRFQ

380LX472M035J012

Cornell Dubilier Electronics (CDE)In Stock: 2805380LX472M035J012 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 478LBB035M2CC are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Capacitance: 4700 µF
• Tolerance: ±20%
• Voltage Rating: 35 V
• Polarization: Polar

Mechanical Parameters (Must Match):

• Package / Case: Radial, Can - Snap-In
• Lead Spacing: 0.394" (10.00mm)
• Size / Dimension: 0.984" Dia (25.00mm)
• Height - Seated (Max): 1.063" (27.00mm)
• Mounting Type: Through Hole

Compliance Parameters (Must Match):

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

Performance Parameters (May Vary Within Acceptable Ranges):

• ESR (Equivalent Series Resistance)
• Lifetime @ Temperature
• Operating Temperature Range
• Ripple Current Ratings

The substitute parts 381LX472M035J012 and 380LX472M035J012 satisfy all mandatory electrical, mechanical, and compliance requirements. Variations in performance parameters reflect different series designs from the same manufacturer and do not affect functional interchangeability in general-purpose applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—478LBB035M2CC, 381LX472M035J012, and 380LX472M035J012—are Active status products from Cornell Dubilier and meet ROHS3 compliance and REACH unaffected requirements. They are electrically and mechanically interchangeable for general-purpose applications.

381LX472M035J012 offers extended operating temperature range (-40°C ~ 105°C) and higher temperature lifetime rating (3000 Hrs @ 105°C), making it suitable for applications requiring enhanced thermal performance.

380LX472M035J012 provides lower ESR (80 mOhm @ 120Hz) and higher ripple current capacity (3.3 A @ 120 Hz, 3.7 A @ 20 kHz), making it suitable for applications with higher current ripple requirements.

478LBB035M2CC remains the primary specification when no specific thermal or ripple current enhancements are required.

Selection should be based on application-specific thermal and current requirements, inventory availability, and lead time considerations.

Frequently Asked Questions (FAQ)

Q: Can 381LX472M035J012 be used as a direct replacement for 478LBB035M2CC?

A: Yes. Both parts share identical capacitance (4700 µF), voltage rating (35 V), tolerance (±20%), and mechanical dimensions (0.984" Dia × 1.063" height, 10.00mm lead spacing). The 381LX series offers extended operating temperature range (-40°C ~ 105°C vs. -40°C ~ 85°C) and higher temperature lifetime rating, making it functionally compatible for direct substitution.

Q: Can 380LX472M035J012 be used as a direct replacement for 478LBB035M2CC?

A: Yes. Both parts are electrically and mechanically identical in capacitance, voltage, tolerance, and package configuration. The 380LX series features lower ESR (80 mOhm vs. 88.18 mOhm @ 120Hz) and higher ripple current ratings, making it compatible for direct substitution with improved performance characteristics in high-ripple applications.

Q: Are there any PCB layout or mounting differences between these parts?

A: No. All three parts use identical through-hole radial, can-style snap-in packages with 0.394" (10.00mm) lead spacing and 0.984" (25.00mm) diameter. PCB footprints and mounting procedures are identical.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL rating of 1 (Unlimited). Compliance certifications are equivalent across all parts.

Q: What is the difference between the LBB, 381LX, and 380LX series?

A: These are different product series from Cornell Dubilier with variations in thermal performance and ripple current specifications. The LBB series is the original specification. The 381LX series extends the operating temperature range and thermal lifetime. The 380LX series optimizes for lower ESR and higher ripple current capacity. All three series maintain identical electrical ratings and mechanical form factors for the 4700 µF 35 V configuration.

Q: Which substitute should I select for high-temperature applications?

A: The 381LX472M035J012 is specified for operation up to 105°C with 3000-hour lifetime at that temperature, compared to 85°C for the other parts. Select this part for applications requiring extended thermal performance.

Q: Which substitute should I select for high-ripple-current applications?

A: The 380LX472M035J012 provides the highest ripple current ratings: 3.3 A @ 120 Hz and 3.7 A @ 20 kHz, with the lowest ESR at 80 mOhm @ 120Hz. Select this part for applications with elevated ripple current requirements.