MMP4W4P7K-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The MMP4W4P7K-F is a 4.7 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 400V DC voltage rating, designed for general-purpose applications requiring polyester metallized dielectric construction. This component is currently in active production status with 911 units available in inventory.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits selection from alternative manufacturers meeting identical electrical and mechanical specifications. The QAK2G475KTP from Nichicon represents a functionally equivalent alternative, though with different operating temperature range and current product status.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	4.7 µF	Critical - must match exactly
Voltage Rating - DC	400V	Critical - must match or exceed
Tolerance	±10%	Critical - must match for circuit performance
Dielectric Material	Polyester, Metallized	Critical - determines electrical characteristics
Mounting Type	Through Hole Axial	Critical - determines PCB compatibility
Package / Case	Axial	Critical - physical form factor
Operating Temperature Range	-55°C ~ 125°C (Main Part)	Important - application-dependent
RoHS Status	ROHS3 Compliant	Important - regulatory requirement

Substitute Part Grouping Explanation

Substitution eligibility for the MMP4W4P7K-F is determined by strict alignment with the following electrical and mechanical parameters:

Critical Matching Parameters:

Capacitance value: 4.7 µF (exact match required)
DC voltage rating: 400V minimum
Tolerance: ±10%
Dielectric type: Polyester, Metallized
Mounting configuration: Through Hole Axial
Termination: PC Pins

Compliance Parameters:

RoHS3 Compliance status
REACH Unaffected classification
ECCN EAR99 export control category

The QAK2G475KTP from Nichicon satisfies all critical electrical parameters and compliance requirements, making it a valid substitute. However, the operating temperature range differs between the main part (-55°C ~ 125°C) and the substitute (-40°C ~ 85°C), which may impact suitability depending on application thermal requirements.

Parameter Comparison

Parameter	MMP4W4P7K-F (CDE)	QAK2G475KTP (Nichicon)	Match Status
Capacitance	4.7 µF	4.7 µF	Exact Match
Tolerance	±10%	±10%	Exact Match
Voltage Rating - DC	400V	400V	Exact Match
Dielectric Material	Polyester, Metallized	Polyester, Metallized	Exact Match
Mounting Type	Through Hole	Through Hole	Exact Match
Package / Case	Axial	Axial	Exact Match
Termination	PC Pins	PC Pins	Exact Match
Operating Temperature Range	-55°C ~ 125°C	-40°C ~ 85°C	Partial Match
Size / Dimension	30.00mm W, 21.00mm T x 40.00mm L	28.00mm W, 17.00mm T x 39.00mm L	Similar (Minor Variation)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Exact Match
REACH Status	REACH Unaffected	REACH Unaffected	Exact Match
Product Status	Active	Obsolete	Different

Engineering Selection Recommendations

Primary Component (MMP4W4P7K-F): The MMP4W4P7K-F maintains active production status with established supply availability (911 units in stock). This component is recommended for new designs and applications requiring the full operating temperature range of -55°C to 125°C. RoHS3 compliance and REACH unaffected status satisfy current regulatory requirements.

Substitute Component (QAK2G475KTP): The QAK2G475KTP is classified as obsolete, indicating discontinued production by Nichicon. This component is suitable only for replacement or repair applications where the narrower operating temperature range (-40°C to 85°C) is acceptable. The reduced temperature specification may limit applicability in extreme thermal environments. RoHS3 compliance and REACH unaffected status are maintained.

Selection Criteria:

For new designs: Use MMP4W4P7K-F (active status, wider temperature range)
For replacement in existing equipment: QAK2G475KTP is electrically compatible if operating temperature requirements fall within -40°C to 85°C
Physical dimensions show minor variation; verify PCB layout clearances before substitution

Frequently Asked Questions (FAQ)

Q: Can QAK2G475KTP directly replace MMP4W4P7K-F in all applications?

A: Electrical substitution is valid for applications operating within -40°C to 85°C. The MMP4W4P7K-F supports extended temperature operation to -55°C and 125°C. Verify application thermal requirements before substitution. Physical dimensions differ slightly; confirm PCB layout compatibility.

Q: What does "obsolete" status mean for the QAK2G475KTP?

A: Obsolete status indicates Nichicon has discontinued production of this part. While existing inventory may be available, future procurement cannot be guaranteed. The MMP4W4P7K-F (active status) is recommended for designs requiring long-term component availability.

Q: Are both parts RoHS3 compliant?

A: Yes. Both MMP4W4P7K-F and QAK2G475KTP carry ROHS3 Compliant certification and REACH Unaffected status, satisfying current environmental and regulatory requirements.

Q: Do the physical dimension differences affect PCB compatibility?

A: The QAK2G475KTP is slightly smaller (28.00mm W, 17.00mm T x 39.00mm L) compared to the MMP4W4P7K-F (30.00mm W, 21.00mm T x 40.00mm L). Verify PCB footprint and clearance specifications to confirm mechanical fit before substitution.

Q: What is the significance of the ±10% tolerance specification?

A: The ±10% tolerance indicates the capacitance value will fall within 4.23 µF to 5.17 µF. Both parts share this tolerance, ensuring equivalent circuit performance characteristics. This tolerance must be considered in circuit design calculations.

Q: Can I use QAK2G475KTP in a design requiring -55°C operation?

A: No. The QAK2G475KTP minimum operating temperature is -40°C. Applications requiring -55°C operation must use the MMP4W4P7K-F or identify an alternative part with matching low-temperature specification.

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