305MABA03KHL Film Capacitor Equivalent & Substitute Parts

Part Overview

The 305MABA03KHL is a 3 µF film capacitor manufactured by Cornell Dubilier / Illinois Capacitor, rated for 500V DC operation with polypropylene metallized dielectric construction. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing production and maintenance applications. The radial through-hole configuration and motor run application profile define the functional requirements for substitute selection.

Substiute Parts

305MABA03KHL

Cornell Dubilier / Illinois CapacitorIn Stock: 939305MABA03KHL Datasheet

Current PartRFQ

ECW-FG80305J

Panasonic Electronic ComponentsIn Stock: 1297ECW-FG80305J Datasheet

SimilarRFQ

MABA034300KHL

NichiconIn Stock: 723MABA034300KHL Datasheet

Parametric EquivalentRFQ

MABA034300KHS

NichiconIn Stock: 1173MABA034300KHS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 305MABA03KHL are classified into two categories based on parametric alignment with the original specification:

Parametric Equivalents maintain identical or superior electrical and mechanical characteristics within the allowed tolerance and voltage rating parameters. These parts satisfy direct replacement requirements without circuit redesign:

• Capacitance: 3 µF (exact match)
• Voltage Rating - DC: 500V (exact match)
• Voltage Rating - AC: 250V (exact match)
• Tolerance: ±10% (exact match)
• Dielectric Material: Polypropylene (PP), Metallized (exact match)
• Operating Temperature: -40°C ~ 100°C (exact match)
• Lead Spacing: 1.083" (27.50mm) (exact match)
• Mounting Type: Through Hole Radial (exact match)

Functional Substitutes provide equivalent capacitance and dielectric material with enhanced voltage ratings or improved tolerance specifications. These parts are suitable for applications where higher voltage margin or tighter tolerance is acceptable:

• Capacitance: 3 µF (exact match)
• Dielectric Material: Polypropylene (PP), Metallized (exact match)
• Voltage Rating - DC: 800V (exceeds 500V requirement)
• Lead Spacing: 1.083" (27.50mm) (exact match)
• Mounting Type: Through Hole Radial (exact match)

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalents (MABA034300KHL, MABA034300KHS):

The Nichicon MABA034300KHL and MABA034300KHS parts provide direct parametric equivalence to the 305MABA03KHL across all critical electrical and mechanical specifications. Both parts are active products with ROHS3 compliance and identical dimensional footprints. Selection between these two Nichicon variants depends on specific application requirements and availability. Both support motor run applications with identical operating temperature ranges and voltage ratings.

Functional Substitute (ECW-FG80305J):

The Panasonic ECW-FG80305J provides functional substitution with enhanced voltage rating (800V DC versus 500V DC) and improved tolerance (±5% versus ±10%). This part is suitable for applications where higher voltage margin is beneficial. The ECW-FG80305J features an extended operating temperature range (-40°C ~ 110°C) and AEC-Q200 automotive qualification. Dimensional variations exist: the Panasonic part measures 1.240" L x 0.472" W versus 1.260" L x 0.591" W for the original, with a maximum seated height of 0.984" versus 0.965". Lead spacing remains identical at 1.083" (27.50mm), ensuring PCB compatibility. The ECW-FG80305J is classified as active with higher inventory availability (1200 pcs).

All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original 305MABA03KHL specification.

Frequently Asked Questions (FAQ)

Q: Can MABA034300KHL and MABA034300KHS be used interchangeably with 305MABA03KHL?

A: Yes. Both Nichicon parts are parametric equivalents with identical capacitance (3 µF), voltage ratings (500V DC / 250V AC), tolerance (±10%), dielectric material (polypropylene metallized), operating temperature range (-40°C ~ 100°C), and mechanical dimensions. Lead spacing and termination type are identical, ensuring direct PCB compatibility.

Q: What are the dimensional differences between the Panasonic ECW-FG80305J and the original 305MABA03KHL?

A: The ECW-FG80305J measures 1.240" L x 0.472" W (31.50mm x 12.00mm) with a maximum seated height of 0.984" (25.00mm), compared to the original dimensions of 1.260" L x 0.591" W (32.00mm x 15.00mm) with a maximum seated height of 0.965" (24.50mm). Lead spacing is identical at 1.083" (27.50mm). PCB layout verification is required to confirm clearance compatibility.

Q: Is the Panasonic ECW-FG80305J suitable for motor run applications?

A: The ECW-FG80305J is specified for automotive, high frequency, and switching applications with AEC-Q200 qualification. While the original 305MABA03KHL is designated for motor run applications, the ECW-FG80305J provides equivalent capacitance and dielectric material with superior voltage rating and tolerance. Application-specific validation is required to confirm suitability for motor run duty cycles.

Q: What is the tolerance difference between the original part and the Panasonic substitute?

A: The 305MABA03KHL and Nichicon equivalents (MABA034300KHL, MABA034300KHS) specify ±10% tolerance. The Panasonic ECW-FG80305J provides tighter tolerance at ±5%, representing improved capacitance accuracy.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 305MABA03KHL, MABA034300KHL, MABA034300KHS, and ECW-FG80305J are all ROHS3 compliant. All parts are REACH unaffected.

Q: What is the lead spacing for all parts?

A: All parts, including the original 305MABA03KHL and all substitutes, feature identical lead spacing of 1.083" (27.50mm), ensuring direct PCB footprint compatibility.

Q: Which substitute part has the highest inventory availability?

A: The Panasonic ECW-FG80305J has the highest inventory with 1200 pcs in stock, compared to 869 pcs for the original 305MABA03KHL, 625 pcs for MABA034300KHL, and 1066 pcs for MABA034300KHS.