Equivalent & Substitute Parts for 478LBB080M2CH

Part Overview

The 478LBB080M2CH is a 4700 µF, 80 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high capacitance at moderate voltage ratings. The part is currently active in production with 764 units in stock. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate alternative suppliers.

Substiute Parts

478LBB080M2CH

Cornell Dubilier / Illinois CapacitorIn Stock: 837478LBB080M2CH Datasheet

Current PartRFQ

380LX472M080J052

Cornell Dubilier Electronics (CDE)In Stock: 2131380LX472M080J052 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 478LBB080M2CH is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 4700 µF
• Voltage Rating: 80 V
• Tolerance: ±20%
• Lifetime: 3000 Hrs @ 85°C
• Operating Temperature Range: -40°C ~ 85°C
• Package Type: Radial, Can - Snap-In
• Lead Spacing: 0.394" (10.00mm)
• Physical Dimensions: 0.984" Dia × 2.047" Height (Max)
• Mounting Type: Through Hole
• Polarization: Polar
• Compliance: ROHS3 Compliant, MSL 1

The substitute part 380LX472M080J052 meets all mandatory matching parameters and is therefore classified as a parametric equivalent. Variations in ESR (Equivalent Series Resistance) and ripple current ratings do not disqualify substitution when all primary electrical and mechanical specifications align.

Parameter Comparison

Engineering Selection Recommendations

Both the 478LBB080M2CH and 380LX472M080J052 are active production parts manufactured by Cornell Dubilier entities and carry identical ROHS3 compliance and MSL ratings. Selection between these parts should be based on the following engineering criteria:

Primary Selection (478LBB080M2CH - LBB Series):

• Lower ESR specification (52.91 mOhm @ 120Hz) provides reduced heat generation in ripple-current-sensitive applications
• Higher ripple current rating at 10 kHz (5.0625 A) supports high-frequency switching applications
• Current inventory of 764 units supports immediate availability

Alternative Selection (380LX472M080J052 - 380LX Series):

• Higher inventory availability (2097 units) supports sustained production requirements
• Acceptable ESR specification (65 mOhm @ 120Hz) for general-purpose applications where thermal performance is not critical
• Equivalent mechanical and electrical specifications ensure direct board-level compatibility

Both parts satisfy identical mechanical constraints (lead spacing, physical dimensions, mounting type) and thermal operating ranges. Selection should prioritize application-specific ripple current and ESR requirements, followed by inventory availability and lead time considerations.

Frequently Asked Questions (FAQ)

Q: Can the 380LX472M080J052 be used as a direct replacement for the 478LBB080M2CH on existing PCBs?

A: Yes. Both parts share identical lead spacing (0.394" / 10.00mm), physical dimensions (0.984" diameter × 2.047" height maximum), and mounting type (through-hole radial snap-in). No PCB redesign or rework is required for mechanical compatibility.

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

A: The 478LBB080M2CH has lower ESR (52.91 mOhm @ 120Hz) compared to the 380LX472M080J052 (65 mOhm @ 120Hz). Lower ESR reduces resistive heating under ripple current stress. For applications with high ripple current or thermal constraints, the lower ESR part is preferred. For general-purpose applications, both ESR values are acceptable.

Q: Are both parts RoHS compliant?

A: Yes. Both the 478LBB080M2CH and 380LX472M080J052 are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity level), indicating no special moisture handling requirements during storage or assembly.

Q: Why do the ripple current specifications differ between the two parts?

A: The 478LBB080M2CH specifies ripple current at 10 kHz (5.0625 A), while the 380LX472M080J052 specifies ripple current at 20 kHz (4.7 A). These represent different test frequencies used by each manufacturer. Both specifications are valid for their respective series and do not indicate incompatibility.

Q: What is the operational temperature range for both parts?

A: Both parts operate across the identical temperature range of -40°C to 85°C with a rated lifetime of 3000 hours at 85°C. This specification applies to both the 478LBB080M2CH and 380LX472M080J052.

Q: Can these parts be used interchangeably in high-frequency switching applications?

A: The 478LBB080M2CH is preferred for high-frequency applications due to its higher ripple current rating at 10 kHz (5.0625 A) and lower ESR. The 380LX472M080J052 is suitable for general-purpose and lower-frequency applications. Application-specific ripple current and thermal requirements should guide the final selection.