DMM4S47K-F Equivalent & Substitute Parts

Part Overview

The DMM4S47K-F is a 0.047 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 400V DC voltage rating and ±10% tolerance. This radial through-hole component is designed for general-purpose applications using polyester metallized dielectric technology. The part is currently active in production with 952 units in stock.

Substitute parts are necessary when the original DMM4S47K-F is unavailable, when design requirements demand higher voltage ratings, improved tolerance specifications, or when alternative manufacturers' components meet identical electrical and mechanical parameters.

Key Parameters

Parameter	Value
Capacitance	0.047 µF
Tolerance	±10%
Voltage Rating - DC	400V
Voltage Rating - AC	200V
Dielectric Material	Polyester, Metallized
Operating Temperature Range	-55°C to 125°C
Mounting Type	Through Hole
Package Type	Radial
Lead Spacing	0.394" (10.00mm)
Termination	PC Pins
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the DMM4S47K-F is determined by strict equivalence across the following critical parameters:

Direct Substitutes maintain identical electrical specifications:

Capacitance: 0.047 µF
Tolerance: ±10%
Voltage Rating - DC: 400V
Voltage Rating - AC: 200V
Dielectric: Polyester, Metallized
Operating Temperature: -55°C to 125°C
Mounting: Through Hole Radial
Lead Spacing: 0.394" (10.00mm)

Upgrade Substitutes provide enhanced voltage ratings while maintaining all other core parameters:

Higher DC voltage rating (630V vs. 400V)
Higher AC voltage rating (250V vs. 200V)
All other parameters remain identical

Mechanical Variants are acceptable substitutes when physical dimensions differ but all electrical parameters and lead spacing remain constant. Dimensional differences do not affect circuit functionality when lead spacing is preserved.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage DC	Voltage AC	Dielectric	Temp Range	Package	Lead Spacing	Product Status	Inventory
DMM4S47K-F	CDE	0.047 µF	±10%	400V	200V	Polyester, Metallized	-55°C to 125°C	Radial	0.394" (10mm)	Active	952 Pcs
DME4S47K-F	CDE	0.047 µF	±10%	400V	200V	Polyester, Metallized	-55°C to 125°C	Radial	0.394" (10mm)	Active	1397 Pcs
DME6S47K-F	CDE	0.047 µF	±10%	630V	250V	Polyester, Metallized	-55°C to 125°C	Radial	0.394" (10mm)	Active	1349 Pcs
B32521C6473K	EPCOS - TDK Electronics	0.047 µF	±10%	400V	200V	Polyester (PET), Metallized - Stacked	-55°C to 125°C	Radial	0.394" (10mm)	Not For New Designs	1141 Pcs
B32521C6473K289	EPCOS - TDK Electronics	0.047 µF	±10%	400V	200V	Polyester (PET), Metallized - Stacked	-55°C to 125°C	Radial	0.394" (10mm)	Not For New Designs	4209 Pcs
B32521C6473J	EPCOS - TDK Electronics	0.047 µF	±5%	400V	200V	Polyester (PET), Metallized - Stacked	-55°C to 125°C	Radial	0.394" (10mm)	Active	5348 Pcs

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

DME4S47K-F is the primary direct substitute for DMM4S47K-F. Both are manufactured by Cornell Dubilier Electronics with identical electrical ratings, tolerance, and operating parameters. DME4S47K-F has higher inventory availability (1397 units vs. 952 units) and maintains active product status. The series designation change (DME vs. DMM) reflects internal CDE product line organization but does not affect functional equivalence.

For Voltage Upgrade Applications:

DME6S47K-F provides enhanced voltage performance with 630V DC and 250V AC ratings while maintaining the 0.047 µF capacitance and ±10% tolerance. This upgrade substitute is appropriate when circuit design margins require higher voltage withstand capability. DME6S47K-F is active in production with 1349 units available.

For EPCOS/TDK Electronics Sourcing:

B32521C6473K and B32521C6473K289 are electrically equivalent to the DMM4S47K-F with identical 400V DC, 200V AC, and ±10% tolerance specifications. Both parts carry "Not For New Designs" status, indicating obsolescence trajectory. B32521C6473K289 offers higher inventory (4209 units) in Cut Tape packaging.

For Improved Tolerance Specification:

B32521C6473J provides tighter ±5% tolerance compared to the ±10% specification of DMM4S47K-F, while maintaining all other electrical parameters at 400V DC and 200V AC. This part is active in production with 5348 units in stock and is suitable for applications requiring enhanced capacitance accuracy.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the environmental regulatory requirements of the original DMM4S47K-F.

Frequently Asked Questions (FAQ)

Q: Can DME4S47K-F replace DMM4S47K-F in existing designs without circuit modification?

A: Yes. DME4S47K-F is a direct electrical and mechanical equivalent with identical capacitance (0.047 µF), tolerance (±10%), voltage ratings (400V DC / 200V AC), dielectric material, operating temperature range, and lead spacing (0.394"). No circuit changes are required.

Q: What is the difference between DMM4S47K-F and DME4S47K-F?

A: The parts are functionally identical. The series designation change (DMM to DME) reflects Cornell Dubilier Electronics' internal product line organization. All electrical specifications, physical dimensions, and performance characteristics are equivalent.

Q: When should DME6S47K-F be used instead of DMM4S47K-F?

A: DME6S47K-F should be selected when the circuit design requires higher voltage withstand capability. It provides 630V DC and 250V AC ratings compared to the 400V DC and 200V AC of DMM4S47K-F. The capacitance value and tolerance remain identical at 0.047 µF ±10%.

Q: Are EPCOS B32521C6473K and B32521C6473K289 suitable for new designs?

A: Both parts carry "Not For New Designs" status, indicating they are in obsolescence phase. While they are electrically equivalent to DMM4S47K-F, Cornell Dubilier Electronics DME4S47K-F or DME6S47K-F are preferred for new design implementations due to active product status.

Q: What is the advantage of B32521C6473J over DMM4S47K-F?

A: B32521C6473J provides improved capacitance tolerance of ±5% compared to the ±10% tolerance of DMM4S47K-F. All other electrical parameters remain identical. This tighter tolerance is beneficial for applications requiring enhanced capacitance accuracy.

Q: Do all substitute parts have the same physical dimensions?

A: No. While all parts maintain the critical 0.394" (10mm) lead spacing for PCB compatibility, physical dimensions vary. DME4S47K-F and B32521C6473 series parts have different length and width measurements. Verify available PCB space before selection, though lead spacing compatibility ensures electrical functionality.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the environmental regulatory requirements of the original DMM4S47K-F.

Q: What packaging options are available for substitute parts?

A: DMM4S47K-F, DME4S47K-F, DME6S47K-F, and B32521C6473K are supplied in Bulk packaging. B32521C6473K289 is available in Cut Tape (CT) packaging. Select packaging based on assembly process requirements and order quantity.

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