KMG6.3VB331M6X11LL Equivalent & Substitute Parts

Part Overview

The KMG6.3VB331M6X11LL is a 330 µF, 6.3 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KMG series. This radial, through-hole component is rated for 1000 hours at 105°C with an equivalent series resistance (ESR) of 1.708 Ohm @ 120 Hz. The part is classified as obsolete, necessitating identification of equivalent substitute components that maintain electrical and mechanical compatibility for continued circuit operation and board-level replacement.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	6.3 V
Tolerance	±20%
ESR @ 120 Hz	1.708 Ohm
Lifetime @ 105°C	1000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Ripple Current @ 120 Hz	190 mA
Ripple Current @ 100 kHz	285 mA
Lead Spacing	0.098" (2.50 mm)
Diameter	0.248" (6.30 mm)
Height (Seated Max)	0.433" (11.00 mm)
Mounting Type	Through Hole
Package	Radial, Can
Polarization	Polar

Substitute Part Grouping Explanation

Substitution of the KMG6.3VB331M6X11LL is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Capacitance: 330 µF (exact match)
Voltage Rating: 6.3 V (exact match)
Tolerance: ±20% (exact match)
Operating Temperature Range: -55°C ~ 105°C (exact match)
Lifetime @ 105°C: minimum 1000 Hrs (equal or greater)
Ripple Current @ 120 Hz: minimum 190 mA (equal or greater)
Ripple Current @ 100 kHz: minimum 285 mA (equal or greater)

Mechanical Equivalence Requirements:

Lead Spacing: 0.098" (2.50 mm) (exact match)
Diameter: 0.248" (6.30 mm) (exact match)
Mounting Type: Through Hole (exact match)
Package: Radial, Can (exact match)

Substitute parts are grouped into three categories based on their relationship to the main part: Similar Manufacturer Parts (same electrical and mechanical specifications from alternative manufacturers), Direct Manufacturer Parts (active production alternatives), and Upgrade Parts (enhanced lifetime specifications).

Parameter Comparison

Parameter	KMG6.3VB331M6X11LL	EKMG6R3ELL331MF11D	EEU-FC0J331S	UKT0J331MED	UPW0J331MED	ECA-0JHG331	UVZ0J331MED
Manufacturer	Chemi-Con	Chemi-Con	Panasonic	Nichicon	Nichicon	Panasonic	Nichicon
Capacitance	330 µF	330 µF	330 µF	330 µF	330 µF	330 µF	330 µF
Voltage Rating	6.3 V	6.3 V	6.3 V	6.3 V	6.3 V	6.3 V	6.3 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±20%
Lifetime @ 105°C	1000 Hrs	1000 Hrs	1000 Hrs	1000 Hrs	2000 Hrs	1000 Hrs	1000 Hrs
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Ripple Current @ 120 Hz	190 mA	190 mA	188.5 mA	195 mA	188.5 mA	190 mA	195 mA
Ripple Current @ 100 kHz	285 mA	285 mA	290 mA	292.5 mA @ 10 kHz	290 mA	285 mA	292.5 mA @ 10 kHz
Lead Spacing	0.098" (2.50 mm)	0.098" (2.50 mm)	0.098" (2.50 mm)	0.098" (2.50 mm)	0.098" (2.50 mm)	0.098" (2.50 mm)	0.098" (2.50 mm)
Diameter	0.248" (6.30 mm)	0.248" (6.30 mm)	0.248" (6.30 mm)	0.248" (6.30 mm)	0.248" (6.30 mm)	0.248" (6.30 mm)	0.248" (6.30 mm)
Height (Seated Max)	0.433" (11.00 mm)	0.492" (12.50 mm)	0.441" (11.20 mm)	0.433" (11.00 mm)	0.433" (11.00 mm)	0.480" (12.20 mm)	0.492" (12.50 mm)
Product Status	Obsolete	Active	Active	Obsolete	Obsolete	Active	Obsolete
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Production Status):

EKMG6R3ELL331MF11D and ECA-0JHG331 are the preferred substitutes for the KMG6.3VB331M6X11LL. Both parts maintain identical electrical specifications (330 µF, 6.3 V, ±20%, 1000 Hrs @ 105°C) and mechanical compatibility (lead spacing, diameter, through-hole mounting). EKMG6R3ELL331MF11D is a Chemi-Con product within the same KMG series, offering continuity with the original manufacturer. ECA-0JHG331 is a Panasonic alternative with active production status. Both parts are ROHS3 compliant, addressing regulatory requirements not met by the original obsolete part.

Secondary Substitute (Enhanced Lifetime):

UPW0J331MED offers an upgrade path with doubled lifetime specification (2000 Hrs @ 105°C) while maintaining all other electrical and mechanical parameters. This part is suitable for applications requiring extended operational life. Height dimension remains at 0.433" (11.00 mm), ensuring PCB compatibility.

Mechanical Compatibility Considerations:

ECA-0JHG331 and UVZ0J331MED have increased seated heights of 0.480" (12.20 mm) and 0.492" (12.50 mm) respectively, compared to the original 0.433" (11.00 mm). EKMG6R3ELL331MF11D also has a height of 0.492" (12.50 mm). These dimensional differences require verification of available PCB clearance before selection. EEU-FC0J331S, UKT0J331MED, and UPW0J331MED maintain the original height specification.

Compliance Status:

All substitute parts are ROHS3 compliant, whereas the original KMG6.3VB331M6X11LL is RoHS non-compliant. EEU-FC0J331S carries AEC-Q200 automotive qualification, suitable for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different height dimension?

A: Height differences must be evaluated against available PCB clearance. The original part measures 0.433" (11.00 mm). Substitutes with heights of 0.441" (11.20 mm), 0.480" (12.20 mm), or 0.492" (12.50 mm) require confirmation that the PCB layout accommodates the increased dimension. Lead spacing and diameter remain constant across all substitutes.

Q: What is the difference between the Chemi-Con and Panasonic substitutes?

A: EKMG6R3ELL331MF11D (Chemi-Con) and ECA-0JHG331 (Panasonic) are electrically equivalent with identical capacitance, voltage, tolerance, and lifetime specifications. Both are active production parts with ROHS3 compliance. The primary difference is manufacturer and height dimension: EKMG6R3ELL331MF11D is 0.492" (12.50 mm) tall, while ECA-0JHG331 is 0.480" (12.20 mm) tall.

Q: Why should I consider UPW0J331MED?

A: UPW0J331MED provides extended lifetime (2000 Hrs @ 105°C) compared to the standard 1000 Hrs specification of the original part and most substitutes. This upgrade is beneficial for applications requiring enhanced reliability or operating in high-temperature environments. The part maintains identical height (0.433" / 11.00 mm) and all other mechanical specifications.

Q: Are all substitutes RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant. The original KMG6.3VB331M6X11LL is RoHS non-compliant. Substitution with any of these parts addresses RoHS compliance requirements for new designs or board revisions.

Q: What is the significance of ripple current specifications?

A: Ripple current ratings at 120 Hz and 100 kHz determine the capacitor's ability to handle AC current superimposed on DC voltage. All substitutes meet or exceed the original part's ripple current specifications (190 mA @ 120 Hz, 285 mA @ 100 kHz), ensuring equivalent or superior performance in filtering and decoupling applications.

Q: Can I use EEU-FC0J331S in automotive applications?

A: Yes. EEU-FC0J331S carries AEC-Q200 automotive qualification and is rated for automotive applications. This part is suitable for automotive circuits requiring 330 µF, 6.3 V aluminum electrolytic capacitors with through-hole radial mounting.

Q: What does "Obsolete" product status mean for the original part?

A: Obsolete status indicates that the KMG6.3VB331M6X11LL is no longer in active production. Existing inventory may be available, but long-term supply cannot be guaranteed. Substitution with active production alternatives (EKMG6R3ELL331MF11D, ECA-0JHG331, or EEU-FC0J331S) ensures continued availability for future production runs and board repairs.

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