Equivalent & Substitute Parts for KMG10VB331M6X11LL

Part Overview

The KMG10VB331M6X11LL is a 330 µF, 10 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KMG series. This radial, through-hole component is designed for general-purpose applications requiring stable capacitance and reliable performance across industrial temperature ranges. The part is classified as obsolete, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility while offering active product status and improved compliance certifications.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Tolerance	±20%	-
Voltage - Rated	10	V
Lifetime @ Temperature	1000	Hrs @ 105°C
Operating Temperature Range	-55 to 105	°C
Ripple Current @ 120 Hz	200	mA
Ripple Current @ High Frequency	300	mA @ 100 kHz
Lead Spacing	0.098	inches (2.50 mm)
Case Diameter	0.248	inches (6.30 mm)
Mounting Type	Through Hole	-
Package Type	Radial, Can	-
Polarization	Polar	-

Substitute Part Grouping Explanation

Substitution of the KMG10VB331M6X11LL is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Capacitance: 330 µF (exact match)
Tolerance: ±20% (exact match)
Voltage Rating: 10 V (exact match)
Lifetime: 1000 Hrs @ 105°C (exact match)
Operating Temperature: -55°C to 105°C (exact match)
Ripple Current @ 120 Hz: 200 mA minimum
Ripple Current @ High Frequency: 300 mA minimum @ 100 kHz or equivalent frequency

Mechanical Equivalence Requirements:

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

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the main part in through-hole PCB applications.

Parameter Comparison

Parameter	KMG10VB331M6X11LL	EKMG100ELL331MF11D	ECA-1AHG331	UVZ1A331MED
Manufacturer	Chemi-Con	Chemi-Con	Panasonic	Nichicon
Series	KMG	KMG	NHG-A	UVZ
Capacitance	330 µF	330 µF	330 µF	330 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage - Rated	10 V	10 V	10 V	10 V
Lifetime @ Temp.	1000 Hrs @ 105°C	1000 Hrs @ 105°C	1000 Hrs @ 105°C	1000 Hrs @ 105°C
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Ripple Current @ 120 Hz	200 mA	200 mA	200 mA	210 mA
Ripple Current @ High Frequency	300 mA @ 100 kHz	300 mA @ 100 kHz	300 mA @ 100 kHz	315 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)
Case Diameter	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)	0.480" (12.20 mm)	0.492" (12.50 mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can	Radial, Can	Radial, Can	Radial, Can
Product Status	Obsolete	Active	Active	Obsolete
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: EKMG100ELL331MF11D

The EKMG100ELL331MF11D is the preferred substitute for the KMG10VB331M6X11LL. Both parts are manufactured by Chemi-Con and belong to the KMG series, ensuring design continuity. This part maintains identical electrical specifications and mechanical dimensions while offering active product status and ROHS3 compliance. With 71,695 units in stock, supply continuity is assured. The height difference of 0.059 inches (1.50 mm) requires PCB layout verification but does not affect electrical performance.

Secondary Recommendation: ECA-1AHG331

The ECA-1AHG331, manufactured by Panasonic Electronic Components, provides an alternative from a different manufacturer. This part meets all electrical and mechanical equivalence criteria and carries active product status with ROHS3 compliance. The height of 0.480 inches (12.20 mm) represents a 0.047-inch (1.20 mm) increase over the main part. Inventory availability is 2,311 units.

Tertiary Option: UVZ1A331MED

The UVZ1A331MED, manufactured by Nichicon, is electrically and mechanically equivalent but carries obsolete product status. This part is suitable only for applications where new stock procurement is not feasible and existing inventory must be utilized. ROHS3 compliance is confirmed. Ripple current specifications are marginally higher (210 mA @ 120 Hz and 315 mA @ 10 kHz), providing additional performance margin.

Height Consideration:

The main part height is 0.433 inches (11.00 mm). Substitute parts range from 0.480 to 0.492 inches (12.20 to 12.50 mm). PCB layout must accommodate this increase to prevent mechanical interference with adjacent components or enclosure constraints.

Frequently Asked Questions (FAQ)

Q1: Can EKMG100ELL331MF11D be used as a direct replacement for KMG10VB331M6X11LL?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical capacitance (330 µF), voltage rating (10 V), tolerance (±20%), lifetime (1000 Hrs @ 105°C), operating temperature range (-55°C to 105°C), ripple current specifications, lead spacing (2.50 mm), and case diameter (6.30 mm). The height difference of 1.50 mm requires PCB layout verification to ensure no mechanical conflicts.

Q2: What is the significance of the height difference between substitute parts?

A: The main part height is 11.00 mm. Substitute parts measure 12.20 to 12.50 mm. This 1.20 to 1.50 mm increase must be evaluated against PCB layout constraints, including clearance to adjacent components, solder joint accessibility, and enclosure height limitations. Electrical performance is unaffected by this dimensional variation.

Q3: Why is EKMG100ELL331MF11D preferred over ECA-1AHG331?

A: EKMG100ELL331MF11D is preferred because it maintains manufacturer continuity (Chemi-Con) and series continuity (KMG), reducing design validation risk. Both parts are active and ROHS3 compliant. EKMG100ELL331MF11D offers significantly higher inventory availability (71,695 units versus 2,311 units), ensuring long-term supply security.

Q4: Can UVZ1A331MED be used despite its obsolete status?

A: UVZ1A331MED meets all electrical and mechanical equivalence criteria and is ROHS3 compliant. However, its obsolete status indicates discontinued production. This part is suitable only when existing inventory must be consumed and new procurement from active suppliers is not feasible. For new designs or long-term production, active alternatives (EKMG100ELL331MF11D or ECA-1AHG331) are required.

Q5: Are there ESR (Equivalent Series Resistance) differences between the main part and substitutes?

A: The main part specifies ESR of 1.205 Ohm @ 120 Hz. Substitute parts do not provide ESR specifications in the available data. However, all parts share identical capacitance, voltage, tolerance, and ripple current ratings, which are the primary determinants of ESR performance in aluminum electrolytic capacitors of this class. ESR verification through manufacturer datasheets is recommended for applications with strict impedance requirements.

Q6: What compliance certifications apply to these parts?

A: The main part (KMG10VB331M6X11LL) is RoHS non-compliant. All substitute parts (EKMG100ELL331MF11D, ECA-1AHG331, UVZ1A331MED) are ROHS3 compliant. All parts are REACH unaffected and classified as EAR99 for export control purposes. HTSUS code 8532.22.0020 applies to all parts.

Q7: Are these parts suitable for surface mount applications?

A: No. All parts, including the main part and substitutes, are through-hole mounted components with radial lead configuration. Surface mount land size is not applicable. These parts require through-hole PCB design and wave or selective soldering processes.

Q8: What is the minimum ripple current requirement for substitute selection?

A: Substitute parts must support at least 200 mA @ 120 Hz and 300 mA @ 100 kHz. UVZ1A331MED exceeds these minimums with 210 mA @ 120 Hz and 315 mA @ 10 kHz, providing additional performance margin. All identified substitutes meet or exceed the ripple current specifications of the main part.

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