ERWF401LGC472MDF5M Equivalent & Substitute Parts

Part Overview

The ERWF401LGC472MDF5M is a 4700 µF, 400 V aluminum electrolytic capacitor manufactured by Chemi-Con in the RWF series. This component features radial, can-style construction with screw terminals, designed for chassis mount applications requiring general-purpose energy storage and filtering. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and field service applications.

Key Parameters

Parameter	Value
Capacitance	4700 µF
Voltage Rating	400 V
Tolerance	±20%
Lifetime @ Temperature	5000 Hrs @ 85°C
Operating Temperature Range	-25°C ~ 85°C
Ripple Current @ 120 Hz	15.2 A
Ripple Current @ 3 kHz	21.28 A
Lead Spacing	1.102" (28.00 mm)
Case Diameter	2.500" (63.50 mm)
Height (Seated Max)	6.102" (155.00 mm)
Package Type	Radial, Can - Screw Terminals
Mounting Type	Chassis Mount
Polarization	Polar
RoHS Status	RoHS Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the ERWF401LGC472MDF5M is determined by strict equivalence across all electrical and mechanical parameters. The substitute relationship is based on the following criteria:

Electrical Parameters (Must Match Exactly):

Capacitance: 4700 µF
Voltage Rating: 400 V
Tolerance: ±20%
Lifetime @ Temperature: 5000 Hrs @ 85°C
Operating Temperature Range: -25°C ~ 85°C
Ripple Current @ 120 Hz: 15.2 A
Ripple Current @ 3 kHz: 21.28 A

Mechanical Parameters (Must Match Exactly):

Lead Spacing: 1.102" (28.00 mm)
Case Diameter: 2.500" (63.50 mm)
Height (Seated Max): 6.102" (155.00 mm)
Package Type: Radial, Can - Screw Terminals
Mounting Type: Chassis Mount

Compliance Parameters (Must Match):

RoHS Compliant
MSL Rating: 1 (Unlimited)
Polarization: Polar

The substitute part ERWF401LGC472MDF5U meets all specified criteria and is manufactured by the same supplier (Chemi-Con) within the same RWF series.

Parameter Comparison

Parameter	ERWF401LGC472MDF5M (Main Part)	ERWF401LGC472MDF5U (Substitute)	Match Status
Manufacturer	Chemi-Con	Chemi-Con	Identical
Series	RWF	RWF	Identical
Capacitance	4700 µF	4700 µF	Identical
Voltage Rating	400 V	400 V	Identical
Tolerance	±20%	±20%	Identical
Lifetime @ Temperature	5000 Hrs @ 85°C	5000 Hrs @ 85°C	Identical
Operating Temperature Range	-25°C ~ 85°C	-25°C ~ 85°C	Identical
Ripple Current @ 120 Hz	15.2 A	15.2 A	Identical
Ripple Current @ 3 kHz	21.28 A	21.28 A	Identical
Lead Spacing	1.102" (28.00 mm)	1.102" (28.00 mm)	Identical
Case Diameter	2.500" (63.50 mm)	2.500" (63.50 mm)	Identical
Height (Seated Max)	6.102" (155.00 mm)	6.102" (155.00 mm)	Identical
Package Type	Radial, Can - Screw Terminals	Radial, Can - Screw Terminals	Identical
Mounting Type	Chassis Mount	Chassis Mount	Identical
Polarization	Polar	Polar	Identical
RoHS Status	RoHS Compliant	RoHS Compliant	Identical
MSL Rating	1 (Unlimited)	1 (Unlimited)	Identical
Product Status	Obsolete	Active	Substitute is Active
Inventory Status	847 Pcs New Original In Stock	983 Pcs New Original In Stock	Both Available

Engineering Selection Recommendations

The ERWF401LGC472MDF5U is a direct functional and mechanical equivalent to the ERWF401LGC472MDF5M. Selection between these parts is determined by product status and supply chain considerations:

ERWF401LGC472MDF5M (Obsolete): Suitable only for field service replacement of existing assemblies where original part specifications must be maintained. Inventory availability is limited to existing stock (847 units).

ERWF401LGC472MDF5U (Active): Recommended for all new production designs and ongoing field service applications. This part maintains identical electrical and mechanical specifications while offering active product status and superior inventory availability (983 units). Both parts carry RoHS compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compliance across applications.

Frequently Asked Questions (FAQ)

Q: Can ERWF401LGC472MDF5U be used as a direct replacement for ERWF401LGC472MDF5M in existing designs?

A: Yes. The ERWF401LGC472MDF5U is electrically and mechanically identical to the ERWF401LGC472MDF5M. All electrical parameters (capacitance, voltage rating, ripple current, temperature range) and mechanical dimensions (lead spacing, case diameter, height) are identical. Screw terminal connections and chassis mount configuration are unchanged.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. The ERWF401LGC472MDF5M is classified as obsolete, while the ERWF401LGC472MDF5U is active. Both are manufactured by Chemi-Con in the RWF series with identical specifications. The suffix variation (MDF5M vs. MDF5U) indicates manufacturing or packaging revision, but electrical and mechanical performance remain equivalent.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS compliance status, MSL rating of 1 (Unlimited), REACH unaffected status, and the same ECCN and HTSUS classifications. Regulatory and environmental compliance is equivalent.

Q: What is the lead spacing and mounting configuration?

A: Both parts feature 1.102" (28.00 mm) lead spacing with screw terminals. The case diameter is 2.500" (63.50 mm) and seated height is 6.102" (155.00 mm). Mounting type is chassis mount, suitable for PCB or chassis-level installation with screw terminal connections.

Q: What ripple current ratings apply to these capacitors?

A: Both parts are rated for 15.2 A ripple current at 120 Hz (low frequency) and 21.28 A ripple current at 3 kHz (high frequency). These ratings determine maximum AC current handling in filtering and energy storage applications.

Q: Is the operating temperature range the same?

A: Yes. Both parts operate across -25°C to 85°C with a rated lifetime of 5000 hours at 85°C. Temperature derating curves and thermal management considerations are identical.

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