Equivalent & Substitute Parts for 126MABA04KJS

Part Overview

The 126MABA04KJS is a 12 µF film capacitor manufactured by Cornell Dubilier / Illinois Capacitor, rated for 370V 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 alternatives that maintain electrical and mechanical compatibility for direct circuit board substitution.

Substiute Parts

126MABA04KJS

Cornell Dubilier / Illinois CapacitorIn Stock: 984126MABA04KJS Datasheet

Current PartRFQ

953BXW12KSF-F

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

SimilarRFQ

MABA045120KJL

NichiconIn Stock: 757MABA045120KJL Datasheet

Parametric EquivalentRFQ

MABA045120KJS

NichiconIn Stock: 755MABA045120KJS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 126MABA04KJS are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalents maintain identical or superior electrical specifications and physical dimensions, enabling direct replacement without circuit modification:

• Capacitance: 12 µF (exact match)
• Tolerance: ±10% (exact match)
• Voltage Rating - DC: 370V (exact match)
• Voltage Rating - AC: 160V (exact match)
• Dielectric Material: Polypropylene (PP), Metallized (exact match)
• Operating Temperature: -40°C ~ 100°C (exact match)
• Lead Spacing: 1.476" (37.50mm) (exact match)
• Physical Dimensions: 1.673" L x 0.866" W (exact match)
• Mounting Type: Through Hole Radial (exact match)

Similar Substitutes share the same capacitance and tolerance but operate at reduced voltage ratings and larger physical dimensions, suitable only for applications where voltage derating is acceptable:

• Capacitance: 12 µF (exact match)
• Tolerance: ±10% (exact match)
• Voltage Rating - AC: 275V (reduced from 160V AC equivalent)
• Dielectric Material: Polypropylene (PP), Metallized (exact match)
• Mounting Type: Through Hole Radial (exact match)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred):

The Nichicon MABA045120KJL and MABA045120KJS are parametric equivalents of the 126MABA04KJS. Both parts maintain identical electrical specifications (12 µF, ±10%, 370V DC, 160V AC) and physical dimensions (1.673" L x 0.866" W, 1.476" lead spacing, 1.181" max height). Both are ROHS3 compliant and active products with current manufacturing status. These parts enable direct circuit board substitution without modification to PCB layout or electrical design. Selection between MABA045120KJL and MABA045120KJS depends on packaging and availability requirements.

For Voltage-Derated Applications (Conditional):

The Cornell Dubilier 953BXW12KSF-F shares identical capacitance and tolerance specifications but operates at reduced voltage ratings (275V AC, DC rating not specified). This part features larger physical dimensions (2.264" L x 1.378" W, 2.067" lead spacing, 2.008" max height) and reduced operating temperature range (-40°C ~ 85°C versus -40°C ~ 100°C). The 953BXW12KSF-F is suitable only for applications where the circuit voltage requirements do not exceed 275V AC and where PCB layout accommodates the larger footprint. This part is not suitable for motor run applications requiring 370V DC operation.

Frequently Asked Questions (FAQ)

Q: Can MABA045120KJL or MABA045120KJS be used as direct replacements for 126MABA04KJS?

A: Yes. Both Nichicon parts are parametric equivalents with identical capacitance (12 µF), tolerance (±10%), voltage ratings (370V DC, 160V AC), dielectric material (polypropylene metallized), operating temperature range (-40°C ~ 100°C), and physical dimensions (1.673" L x 0.866" W, 1.476" lead spacing). Direct PCB substitution is possible without circuit modification.

Q: What are the key differences between the two Nichicon parametric equivalents?

A: MABA045120KJL and MABA045120KJS are electrically and mechanically identical. Differences exist only in packaging designation and inventory availability (743 pcs versus 707 pcs). Selection should be based on procurement and supply chain requirements.

Q: Is the 953BXW12KSF-F suitable for motor run applications?

A: The 953BXW12KSF-F is specified for EMI and RFI suppression applications, not motor run applications. Additionally, its voltage rating (275V AC) is lower than the original part's 160V AC equivalent rating. This part is not recommended for motor run circuits requiring 370V DC operation.

Q: What is the impact of the larger physical dimensions of the 953BXW12KSF-F?

A: The 953BXW12KSF-F measures 2.264" L x 1.378" W with 2.067" lead spacing, compared to the original part's 1.673" L x 0.866" W with 1.476" lead spacing. This larger footprint may not fit existing PCB layouts designed for the original component. PCB modification would be required for mechanical accommodation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 126MABA04KJS, MABA045120KJL, MABA045120KJS, and 953BXW12KSF-F are all ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing.

Q: What is the operating temperature difference between the main part and the 953BXW12KSF-F?

A: The 126MABA04KJS operates from -40°C to 100°C, while the 953BXW12KSF-F operates from -40°C to 85°C. The 953BXW12KSF-F has a reduced upper temperature limit of 15°C, which may be a limiting factor in high-temperature applications.

Q: Can the 953BXW12KSF-F be used if the circuit voltage is reduced below 275V AC?

A: The 953BXW12KSF-F can be used in circuits operating below 275V AC. However, the larger physical dimensions and reduced operating temperature range remain limiting factors. For motor run applications, the parametric equivalents (MABA045120KJL or MABA045120KJS) are the appropriate choice.