Equivalent & Substitute Parts for 185MABA03KHS

Part Overview

The 185MABA03KHS is a 1.8 µF film capacitor manufactured by Cornell Dubilier / Illinois Capacitor, rated for 500V DC operation with polypropylene metallized dielectric. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing applications requiring motor run capacitor functionality. The radial through-hole configuration and ±10% tolerance specification define the functional requirements for substitution candidates.

Substiute Parts

185MABA03KHS

Cornell Dubilier / Illinois CapacitorIn Stock: 797185MABA03KHS Datasheet

Current PartRFQ

R71QR4180AA10K

KEMETIn Stock: 842R71QR4180AA10K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 185MABA03KHS is determined by the following critical parameters:

Electrical Compatibility:

• Capacitance value must equal 1.8 µF
• Tolerance must be ±10%
• Voltage rating must meet or exceed 500V DC minimum requirement
• Dielectric material must be polypropylene metallized film

Mechanical Compatibility:

• Mounting type must be through-hole radial configuration
• Lead spacing must be 1.083" (27.50mm) to ensure PCB footprint compatibility
• Termination must be PC pins

Environmental & Compliance:

• Operating temperature range must encompass -40°C ~ 100°C minimum
• RoHS3 compliance required
• REACH unaffected status required

The substitute part R71QR4180AA10K meets all electrical and mechanical compatibility criteria while exceeding the voltage rating specification.

Parameter Comparison

Engineering Selection Recommendations

The R71QR4180AA10K from KEMET is a direct electrical and mechanical substitute for the obsolete 185MABA03KHS. Both components share identical capacitance (1.8 µF), tolerance (±10%), and lead spacing (27.50mm), ensuring PCB compatibility without layout modifications.

The substitute part provides enhanced voltage rating (1000V DC versus 500V DC), extended operating temperature range (-40°C ~ 110°C versus -40°C ~ 100°C), and active product status with established supply chain availability. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.

Physical dimensions differ slightly: the R71QR4180AA10K exhibits increased width (14.00mm versus 11.00mm) and height (28.10mm versus 22.00mm). PCB layout verification is required to confirm clearance compatibility in confined mounting spaces.

Frequently Asked Questions (FAQ)

Q: Can R71QR4180AA10K replace 185MABA03KHS in motor run applications?

A: Yes. Both components are rated for motor run applications with identical 1.8 µF capacitance and ±10% tolerance. The substitute part's higher voltage rating (1000V DC) provides additional safety margin in the 500V DC application environment.

Q: Are the lead spacings identical between these parts?

A: Yes. Both components feature 1.083" (27.50mm) lead spacing, enabling direct PCB footprint compatibility without trace routing modifications.

Q: What is the physical size difference between these capacitors?

A: The 185MABA03KHS measures 32.00mm L x 11.00mm W x 22.00mm H (seated). The R71QR4180AA10K measures 32.00mm L x 14.00mm W x 28.10mm H (seated). The substitute is wider and taller. Verify available PCB clearance before substitution.

Q: Do both parts meet current compliance standards?

A: Yes. Both components are ROHS3 compliant and REACH unaffected. The substitute part maintains full regulatory compliance for new designs and legacy system replacements.

Q: Why is the substitute part rated for higher voltage?

A: The R71QR4180AA10K is designed for broader application compatibility across multiple voltage classes. The 1000V DC rating accommodates both 500V and higher-voltage circuit requirements within a single component family.

Q: Is the substitute part currently available?

A: Yes. The R71QR4180AA10K is classified as active product status with 810 pieces in stock, ensuring supply chain continuity compared to the obsolete 185MABA03KHS.