MPXQS47K Film Capacitor Equivalent & Substitute Parts

Part Overview

The MPXQS47K is a 0.047 µF metallized polypropylene film capacitor rated for 275V AC operation, manufactured by Cornell Dubilier Electronics (CDE) in the MPX series. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The capacitor is designed for EMI and RFI suppression in through-hole radial configurations with X2 safety ratings.

Substiute Parts

MPXQS47K

Cornell Dubilier Electronics (CDE)In Stock: 1101MPXQS47K Datasheet

Current PartRFQ

R46KI24700001K

KEMETIn Stock: 2264R46KI24700001K Datasheet

SimilarRFQ

R46KI24705001K

KEMETIn Stock: 1194R46KI24705001K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPXQS47K is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Capacitance value: 0.047 µF (exact match required)
• Tolerance: ±10% (matching tolerance band)
• Voltage Rating - AC: 275V minimum (substitute must meet or exceed)
• Dielectric material: Polypropylene (PP), Metallized (same material system)
• Safety rating: X2 (same classification)

Mechanical Equivalence Criteria:

• Mounting type: Through Hole (same mounting method)
• Package type: Radial (same physical configuration)
• Lead spacing: 0.591" (15.00mm) (same pin pitch for PCB compatibility)
• Physical dimensions: 0.709" L x 0.197" W (18.00mm x 5.00mm) (same footprint)

The KEMET R46KI series parts listed below satisfy all substitution criteria. Both substitute parts are active products with enhanced DC voltage ratings (560V) and extended operating temperature ranges (-40°C to 110°C), providing superior performance margins compared to the obsolete MPXQS47K.

Parameter Comparison

Engineering Selection Recommendations

Substitution Validity: Both KEMET R46KI24700001K and R46KI24705001K are direct functional equivalents to the obsolete MPXQS47K. All critical electrical and mechanical parameters align within acceptable engineering tolerances. Both substitute parts are active products with current manufacturing support.

Compliance Status: All three parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for modern electronics manufacturing. The substitute parts carry no additional compliance burden.

Performance Advantages: The KEMET R46KI series substitutes provide enhanced DC voltage ratings (560V versus unspecified for the original) and extended maximum operating temperature (110°C versus 100°C), delivering improved performance margins in EMI/RFI suppression applications.

Physical Compatibility: The substitute parts feature identical lead spacing (0.591" / 15.00mm) and footprint dimensions (0.709" x 0.197" / 18.00mm x 5.00mm), ensuring direct PCB layout compatibility. The seated height difference (0.437" versus 0.453") is negligible for standard through-hole applications.

Selection Criteria: Either R46KI24700001K or R46KI24705001K may be selected based on inventory availability and procurement lead times. No technical differentiation exists between these two KEMET variants for standard EMI/RFI suppression applications.

Frequently Asked Questions (FAQ)

Q: Can the KEMET R46KI series parts directly replace the obsolete MPXQS47K without PCB modification?

A: Yes. The R46KI24700001K and R46KI24705001K maintain identical lead spacing (0.591" / 15.00mm) and radial package configuration. No PCB layout changes are required for direct substitution.

Q: What is the significance of the higher DC voltage rating (560V) on the KEMET substitutes?

A: The 560V DC rating on the R46KI series provides additional performance margin beyond the 275V AC requirement of the original MPXQS47K. This enhanced rating does not affect AC circuit operation but offers improved reliability in applications with transient voltage spikes or mixed AC/DC stress conditions.

Q: Are there any thermal performance differences between the MPXQS47K and the KEMET substitutes?

A: The KEMET R46KI series extends the maximum operating temperature from 100°C to 110°C. This 10°C increase provides additional thermal headroom in high-temperature environments. The capacitance value and tolerance remain identical across the operating range.

Q: Do the substitute parts require different soldering or assembly procedures?

A: No. Both KEMET R46KI parts use identical PC pin termination and radial through-hole mounting. Standard wave soldering and assembly processes for the original MPXQS47K apply directly to the substitutes.

Q: What is the difference between R46KI24700001K and R46KI24705001K?

A: Both parts are electrically and mechanically identical. The designation difference reflects internal KEMET part numbering. Either part may be selected based on supplier availability and lead time.

Q: Are the substitute parts suitable for X2 safety-rated applications?

A: Yes. Both KEMET R46KI24700001K and R46KI24705001K carry X2 safety ratings, matching the original MPXQS47K specification. They are approved for use in line-to-neutral EMI suppression circuits.

Q: What is the moisture sensitivity level (MSL) for the KEMET substitutes?

A: The KEMET R46KI series carries MSL Not Applicable, indicating no moisture sensitivity restrictions. This represents an improvement over the original MPXQS47K (MSL 1 - Unlimited), eliminating moisture-related handling and storage constraints.