KMG63VB331M10X20LL Equivalent & Substitute Parts

Part Overview

The KMG63VB331M10X20LL is a 330 µF, 63 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KMG series. This radial, through-hole component is rated for general-purpose applications with a 1000-hour lifetime at 105°C. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing production support and design continuity.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	63 V
Tolerance	±20%
ESR @ 120 Hz	502 mOhm
Lifetime @ 105°C	1000 Hrs
Operating Temperature Range	-55°C to 105°C
Ripple Current @ 120 Hz	510 mA
Ripple Current @ 100 kHz	765 mA
Lead Spacing	0.197" (5.00 mm)
Diameter	0.394" (10.00 mm)
Height (Max)	0.787" (20.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can
Polarization	Polar

Substitute Part Grouping Explanation

Substitution of the KMG63VB331M10X20LL is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 330 µF
Voltage Rating: 63 V
Tolerance: ±20%
Mounting Type: Through Hole
Package Type: Radial, Can
Lead Spacing: 0.197" (5.00 mm)
Diameter: 0.394" (10.00 mm)
Operating Temperature Range: -55°C to 105°C
Polarization: Polar

Allowable Variations:

Height: Substitute parts may exceed the original 0.787" (20.00 mm) maximum, provided board layout permits
Lifetime @ 105°C: Substitute parts with equal or greater lifetime are acceptable
ESR: Substitute parts with unspecified or different ESR values are acceptable if all other parameters match
Ripple Current: Substitute parts with equal or greater ripple current ratings are acceptable
RoHS Status: Substitute parts may have different RoHS compliance levels
Product Status: Active or Not For New Designs parts are acceptable substitutes for obsolete parts

Two substitute parts meet these criteria: EKMG630ELL331MJ20S (Chemi-Con, Active) and UVZ1J331MPD (Nichicon, Not For New Designs).

Parameter Comparison

Parameter	KMG63VB331M10X20LL	EKMG630ELL331MJ20S	UVZ1J331MPD
Manufacturer	Chemi-Con	Chemi-Con	Nichicon
Capacitance	330 µF	330 µF	330 µF
Voltage Rating	63 V	63 V	63 V
Tolerance	±20%	±20%	±20%
Lifetime @ 105°C	1000 Hrs	1000 Hrs	2000 Hrs
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Ripple Current @ 120 Hz	510 mA	510 mA	510 mA
Ripple Current @ 100 kHz	765 mA	765 mA	765 mA @ 10 kHz
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)
Diameter	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Height (Max)	0.787" (20.00 mm)	0.846" (21.50 mm)	0.866" (22.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can
Polarization	Polar	Polar	Polar
Product Status	Obsolete	Active	Not For New Designs
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

EKMG630ELL331MJ20S (Chemi-Con) is the primary substitute for the KMG63VB331M10X20LL. This part maintains identical electrical specifications and is manufactured by the same supplier. The EKMG630ELL331MJ20S carries Active product status, ensuring long-term availability and supply chain stability. The component is ROHS3 compliant, meeting current environmental and regulatory requirements. Height exceeds the original by 0.059" (1.50 mm), requiring verification of available board clearance. This substitute is suitable for new production and long-term deployment.

UVZ1J331MPD (Nichicon) is an alternative substitute with extended lifetime performance. This part provides 2000 hours at 105°C, double the original specification. The UVZ1J331MPD is ROHS3 compliant but carries Not For New Designs status, indicating limited future availability. Height exceeds the original by 0.079" (2.00 mm). This substitute is appropriate for legacy system maintenance and repair applications where extended thermal life provides operational benefit.

Both substitutes are electrically and mechanically compatible with the original part within the specified parameter tolerances. Selection between them depends on product status requirements, supply chain strategy, and available board space.

Frequently Asked Questions (FAQ)

Q: Can EKMG630ELL331MJ20S directly replace KMG63VB331M10X20LL in existing designs?

A: Yes, provided board layout accommodates the increased height of 0.846" (21.50 mm) versus the original 0.787" (20.00 mm). All electrical parameters, lead spacing, and mounting type are identical. Verify clearance above the component before implementation.

Q: What is the difference between the two substitute parts?

A: EKMG630ELL331MJ20S (Chemi-Con, Active) and UVZ1J331MPD (Nichicon, Not For New Designs) are electrically equivalent. The primary differences are manufacturer, product status, and lifetime rating. UVZ1J331MPD offers 2000-hour lifetime versus 1000 hours for both the original and EKMG630ELL331MJ20S. EKMG630ELL331MJ20S is recommended for new designs due to Active status.

Q: Are there height restrictions for using these substitutes?

A: The substitute parts exceed the original height specification. EKMG630ELL331MJ20S is 0.059" (1.50 mm) taller; UVZ1J331MPD is 0.079" (2.00 mm) taller. Verify available clearance on the PCB above the component mounting location. If space is constrained, the original KMG63VB331M10X20LL height of 0.787" (20.00 mm) cannot be matched by available substitutes.

Q: Do the substitute parts have the same ESR specification?

A: The original KMG63VB331M10X20LL specifies 502 mOhm ESR @ 120 Hz. The substitute parts do not provide ESR specifications in the available data. ESR values are not a substitution criterion for these parts; all other electrical parameters match the original specification.

Q: Which substitute should be selected for new product designs?

A: EKMG630ELL331MJ20S is the recommended choice for new designs. This part is manufactured by Chemi-Con (the original manufacturer), carries Active product status ensuring long-term availability, and is ROHS3 compliant. UVZ1J331MPD is suitable only for legacy system support due to Not For New Designs status.

Q: Are both substitutes RoHS compliant?

A: Yes. Both EKMG630ELL331MJ20S and UVZ1J331MPD are ROHS3 compliant. The original KMG63VB331M10X20LL is RoHS non-compliant. Substitution with either part upgrades the design to current environmental standards.

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