Equivalent & Substitute Parts for KZE25VB331M10X12LL

Part Overview

The KZE25VB331M10X12LL is a 330 µF, 25 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KZE series. This radial, through-hole component is rated for 4000 hours at 105°C and is designed for general-purpose applications. The part is currently obsolete, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility while offering improved availability and product status.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	330 µF	Must match exactly
Voltage Rating	25 V	Must match or exceed
Tolerance	±20%	Must match or be tighter
Mounting Type	Through Hole Radial	Must match for PCB compatibility
Lead Spacing	0.197" (5.00 mm)	Must match for footprint compatibility
Diameter	0.394" (10.00 mm)	Must match for mechanical fit
Height	0.492" (12.50 mm) maximum	Substitute height must not exceed available board space
Operating Temperature	-40°C to 105°C	Must cover or exceed application range
Lifetime @ 105°C	4000 hours	Determines reliability; higher values acceptable

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following criteria:

Mandatory Matching Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 25 V (exact match required)
Tolerance: ±20% (exact match required)
Mounting Type: Through Hole Radial (exact match required)
Lead Spacing: 0.197" / 5.00 mm (exact match required)
Diameter: 0.394" / 10.00 mm (exact match required)
Package/Case: Radial, Can (exact match required)
Polarization: Polar (exact match required)

Acceptable Variation Parameters:

Height: Substitute height must not exceed the available PCB clearance; heights up to 0.551" (14.00 mm) are acceptable if board space permits
Operating Temperature Range: Substitute range must encompass or exceed the application requirements
Lifetime @ 105°C: Higher values indicate improved reliability and are acceptable
Ripple Current Ratings: Substitute values must meet or exceed application requirements
Impedance: Lower impedance values indicate better high-frequency performance and are acceptable

All substitute parts listed below satisfy the mandatory matching parameters and are compatible with the original KZE25VB331M10X12LL footprint and electrical specifications.

Parameter Comparison

Parameter	KZE25VB331M10X12LL	EKY-250ELL331MJC5S	EKZE250ELL331MJC5S	MAL215066331E3	UHE1E331MPD6	UPW1E331MPD	EEU-FM1E331
Manufacturer	Chemi-Con	Chemi-Con	Chemi-Con	Vishay	Nichicon	Nichicon	Panasonic
Series	KZE	KY	KZE	150 RMI	UHE	UPW	FM-A
Capacitance	330 µF	330 µF	330 µF	330 µF	330 µF	330 µF	330 µF
Voltage Rating	25 V	25 V	25 V	25 V	25 V	25 V	25 V
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±20%
Lead Spacing	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	0.197" (5.00 mm)	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)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Height (Max)	0.492" (12.50 mm)	0.551" (14.00 mm)	0.551" (14.00 mm)	0.512" (13.00 mm)	0.492" (12.50 mm)	0.492" (12.50 mm)	0.551" (14.00 mm)
Operating Temperature	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C	-55°C to 105°C	-40°C to 105°C	-55°C to 105°C	-40°C to 105°C
Lifetime @ 105°C	4000 Hrs	7000 Hrs	4000 Hrs	4000 Hrs	7000 Hrs	5000 Hrs	4000 Hrs
Ripple Current @ 120 Hz	515 mA	432.5 mA	515 mA	474.5 mA	605.5 mA	494 mA	903 mA
Ripple Current @ 100 kHz	1.03 A	865 mA	1.03 A	—	865 mA	760 mA	1.29 A
Impedance	53 mOhms	80 mOhms	53 mOhms	97 mOhms	80 mOhms	90 mOhms	38 mOhms
Product Status	Obsolete	Active	Active	Active	Not For New Designs	Not For New Designs	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Affected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Recommendation: EKY-250ELL331MJC5S (Chemi-Con)

The EKY-250ELL331MJC5S is the preferred substitute for new designs and production applications. This part maintains identical electrical specifications to the original KZE25VB331M10X12LL while offering significant advantages: Active product status ensures long-term availability, ROHS3 compliance meets current regulatory requirements, and extended lifetime rating of 7000 hours at 105°C provides improved reliability. The height increase to 0.551" (14.00 mm) is acceptable provided adequate PCB clearance exists. Inventory availability of 12,719 units supports immediate procurement.

Secondary Recommendation: EKZE250ELL331MJC5S (Chemi-Con)

The EKZE250ELL331MJC5S provides an alternative within the same manufacturer family. This part maintains the original KZE series designation and identical electrical performance (4000 hours @ 105°C, 53 mOhms impedance). Active product status and ROHS3 compliance ensure regulatory alignment. Height specification of 0.551" (14.00 mm) requires PCB clearance verification. This option is suitable when maintaining the original series designation is preferred.

Tertiary Recommendation: EEU-FM1E331 (Panasonic)

The EEU-FM1E331 offers superior electrical performance with the lowest impedance (38 mOhms) and highest ripple current ratings (903 mA @ 120 Hz, 1.29 A @ 100 kHz). Active product status and ROHS3 compliance are confirmed. Height of 0.551" (14.00 mm) requires clearance verification. This option is optimal for applications demanding enhanced high-frequency performance and lower ESR characteristics.

Alternative Options: MAL215066331E3, UHE1E331MPD6, UPW1E331MPD

These parts satisfy all mandatory electrical and mechanical compatibility requirements. MAL215066331E3 (Vishay) includes AEC-Q200 automotive qualification and extended operating temperature range (-55°C to 105°C), suitable for automotive applications. UHE1E331MPD6 and UPW1E331MPD (Nichicon) carry "Not For New Designs" status; these are acceptable for legacy system maintenance or repair applications only and are not recommended for new product development.

Compliance Considerations:

All recommended substitutes are ROHS3 compliant, addressing environmental and regulatory requirements. The original KZE25VB331M10X12LL is RoHS non-compliant; substitution with compliant alternatives is necessary for products subject to RoHS directives. REACH status varies; UHE1E331MPD6 is REACH Affected, while all other substitutes are REACH Unaffected.

Frequently Asked Questions (FAQ)

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

A: Height variation is acceptable only if the PCB layout provides adequate clearance above the component. The original KZE25VB331M10X12LL specifies 0.492" (12.50 mm) maximum height. Substitutes with heights up to 0.551" (14.00 mm) are electrically compatible but require verification that the additional 0.059" (1.50 mm) does not interfere with overlying components, connectors, or enclosure constraints. Measure available vertical space before selecting a taller substitute.

Q: What does "Not For New Designs" status mean?

A: Parts designated "Not For New Designs" (UHE1E331MPD6, UPW1E331MPD) are available for current production and repair of existing products but are not recommended for incorporation into new product designs. These parts may have limited future availability or planned discontinuation. For new designs, select parts with "Active" status: EKY-250ELL331MJC5S, EKZE250ELL331MJC5S, MAL215066331E3, or EEU-FM1E331.

Q: Are all substitutes electrically interchangeable?

A: Yes. All listed substitutes maintain the same capacitance (330 µF), voltage rating (25 V), tolerance (±20%), and mounting configuration (through-hole radial, 5.00 mm lead spacing, 10.00 mm diameter). Electrical performance differences exist in ripple current handling and impedance characteristics, but these variations do not prevent direct substitution in the original circuit. Select based on application requirements for ripple current handling and thermal performance.

Q: Why is impedance important in capacitor selection?

A: Impedance (ESR and reactance combined) affects capacitor performance at different frequencies. Lower impedance values indicate better high-frequency filtering and reduced voltage ripple. The original KZE25VB331M10X12LL has 53 mOhms impedance. Substitutes with equal or lower impedance (EEU-FM1E331 at 38 mOhms) provide equal or superior performance. Substitutes with higher impedance (MAL215066331E3 at 97 mOhms) are acceptable if the application does not require enhanced high-frequency filtering.

Q: What is the significance of lifetime rating differences?

A: Lifetime rating (hours at 105°C) indicates expected component reliability under thermal stress. The original part is rated 4000 hours at 105°C. Substitutes with higher ratings (EKY-250ELL331MJC5S and UHE1E331MPD6 at 7000 hours, UPW1E331MPD at 5000 hours) provide extended operational life and improved reliability margins. Higher lifetime ratings are beneficial for applications requiring long service intervals or operating in elevated-temperature environments.

Q: Is RoHS compliance mandatory for my application?

A: RoHS compliance is mandatory for products sold in the European Union and many other jurisdictions. The original KZE25VB331M10X12LL is RoHS non-compliant. All recommended substitutes are ROHS3 compliant. If your product is subject to RoHS directives, substitution with a compliant part is required. Verify regulatory requirements for your target markets before finalizing component selection.

Q: Can I substitute a part with a lower ripple current rating?

A: No. Ripple current rating must meet or exceed the application requirement. If the original circuit design specifies 515 mA ripple current at 120 Hz, select a substitute with equal or higher ripple current capability. EKY-250ELL331MJC5S (432.5 mA @ 120 Hz) has lower ripple current than the original and is not suitable for applications requiring the full 515 mA rating. Verify application ripple current requirements before selecting a substitute with lower ratings.

Q: What is the difference between lead spacing and diameter specifications?

A: Lead spacing (0.197" / 5.00 mm) defines the distance between the two radial leads and determines PCB footprint compatibility. Diameter (0.394" / 10.00 mm) defines the cylindrical body width and affects component density on the board. Both parameters must match exactly to ensure the substitute fits the existing PCB without modification. Mismatched lead spacing or diameter will prevent proper insertion into the PCB holes.

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