Equivalent & Substitute Parts for 126MABA03KJS

Part Overview

The 126MABA03KJS is a 12 µF film capacitor manufactured by Cornell Dubilier / Illinois Capacitor, rated for 500V DC operation with polypropylene metallized dielectric. This component is designed for motor run applications and features radial through-hole mounting. The part is classified as obsolete, necessitating identification of active equivalent and substitute components to maintain design continuity and ensure supply chain availability.

Substiute Parts

126MABA03KJS

Cornell Dubilier / Illinois CapacitorIn Stock: 1023126MABA03KJS Datasheet

Current PartRFQ

953BXW12KSF-F

Cornell Dubilier Electronics (CDE)In Stock: 672953BXW12KSF-F Datasheet

SimilarRFQ

MABA035120KJL

NichiconIn Stock: 989MABA035120KJL Datasheet

Parametric EquivalentRFQ

MABA035120KJS

NichiconIn Stock: 1047MABA035120KJS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 126MABA03KJS are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents (Full Electrical & Mechanical Match):

• MABA035120KJL (Nichicon)
• MABA035120KJS (Nichicon)

These parts maintain identical capacitance (12 µF), tolerance (±10%), voltage ratings (500V DC / 250V AC), dielectric material (polypropylene metallized), operating temperature range (-40°C ~ 100°C), mounting type (through hole radial), and lead spacing (37.50mm). All three parts belong to the MAB series and are ROHS3 compliant. The Nichicon variants are active products, providing direct functional replacement.

Similar Substitute (Reduced Voltage Rating):

• 953BXW12KSF-F (Cornell Dubilier Electronics)

This part shares the same capacitance (12 µF), tolerance (±10%), dielectric material (polypropylene metallized), and mounting type (through hole radial). However, it operates at 275V AC maximum with no DC voltage rating specified, and features a 4-lead radial package with larger physical dimensions (57.50mm L x 35.00mm W) and increased lead spacing (52.50mm). This substitute is suitable only for applications where the reduced voltage rating is acceptable.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MABA035120KJL or MABA035120KJS (Nichicon)

Both Nichicon variants provide complete electrical and mechanical equivalence to the obsolete 126MABA03KJS. These parts maintain identical capacitance, voltage ratings, dielectric composition, temperature range, and physical dimensions. Both are active products with ROHS3 compliance and REACH unaffected status, ensuring long-term supply availability and regulatory compliance. Selection between KJL and KJS variants should be based on specific packaging and lead configuration requirements for the application.

Secondary Recommendation: 953BXW12KSF-F (Cornell Dubilier Electronics)

This substitute is applicable only when the application voltage requirements do not exceed 275V AC and when the reduced operating temperature maximum of 85°C is acceptable. The larger physical footprint (57.50mm L x 35.00mm W) and increased lead spacing (52.50mm) require PCB layout verification. This part is suitable for EMI and RFI suppression applications where the voltage derating is compatible with circuit design specifications.

Frequently Asked Questions (FAQ)

Q: Can MABA035120KJL and MABA035120KJS be used interchangeably with 126MABA03KJS?

A: Yes. Both Nichicon parts are parametric equivalents with identical electrical specifications (12 µF, ±10%, 500V DC, 250V AC) and mechanical dimensions (42.50mm L x 28.00mm W, 37.50mm lead spacing). Direct substitution is supported without circuit modification.

Q: What is the key difference between the Nichicon variants MABA035120KJL and MABA035120KJS?

A: Both parts share identical electrical and mechanical parameters. Differences, if any, relate to packaging configuration or lead termination specifications not detailed in the provided data. Consult manufacturer datasheets for specific packaging distinctions.

Q: Is 953BXW12KSF-F a direct replacement for 126MABA03KJS?

A: No. While 953BXW12KSF-F maintains the same capacitance and tolerance, it operates at reduced voltage (275V AC maximum with unspecified DC rating), lower maximum temperature (85°C versus 100°C), and features larger physical dimensions with different lead spacing (52.50mm versus 37.50mm). This part is a substitute only for applications where these parameter reductions are acceptable.

Q: Will 953BXW12KSF-F fit the same PCB footprint as 126MABA03KJS?

A: No. The 953BXW12KSF-F has larger dimensions (57.50mm L x 35.00mm W versus 42.50mm L x 28.00mm W) and increased lead spacing (52.50mm versus 37.50mm). PCB layout modification is required for this substitute.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 126MABA03KJS and all three substitute parts (MABA035120KJL, MABA035120KJS, and 953BXW12KSF-F) are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What applications are these capacitors designed for?

A: The 126MABA03KJS and Nichicon equivalents are specified for motor run applications. The 953BXW12KSF-F is designated for EMI and RFI suppression. Application compatibility should be verified based on circuit requirements and voltage/temperature operating conditions.