Equivalent & Substitute Parts for KZE25VB331M8X15LL

Part Overview

The KZE25VB331M8X15LL 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 3000 hours at 105°C and is designed for general-purpose applications. The part is currently listed as obsolete, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility while offering improved availability and compliance status.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ 105°C	3000 Hrs
Operating Temperature Range	-40°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.138" (3.50 mm)
Case Diameter	0.315" (8.00 mm)
Height	0.591" (15.00 mm)

Substitute Part Grouping Explanation

Substitution eligibility for the KZE25VB331M8X15LL is determined by the following mandatory parameters:

Electrical Parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 25 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)

Mechanical Parameters:

Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)
Lead Spacing: 0.138" (3.50 mm) (exact match required)
Case Diameter: 0.315" (8.00 mm) (exact match required)

Thermal Parameters:

Operating Temperature Range: -40°C ~ 105°C minimum (equal or wider range acceptable)
Lifetime @ 105°C: 3000 Hrs minimum (equal or greater acceptable)

All substitute parts listed meet these criteria. Variations in ripple current ratings, impedance, and lifetime hours represent performance enhancements or different application suitability rather than incompatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Operating Temp	Lead Spacing	Case Dia	Height	Product Status	RoHS Status
KZE25VB331M8X15LL	Chemi-Con	KZE	330 µF	25 V	±20%	3000 Hrs	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.591" (15.00 mm)	Obsolete	Non-compliant
EKZE250ELL331MH15D	Chemi-Con	KZE	330 µF	25 V	±20%	3000 Hrs	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.650" (16.50 mm)	Active	ROHS3 Compliant
ELXZ250ELL331MH15D	Chemi-Con	LXZ	330 µF	25 V	±20%	3000 Hrs	-55°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.591" (15.00 mm)	Active	ROHS3 Compliant
EEU-EB1E331	Panasonic	EB-A	330 µF	25 V	±20%	10000 Hrs	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.630" (16.00 mm)	Active	ROHS3 Compliant
UHE1E331MPD	Nichicon	UHE	330 µF	25 V	±20%	7000 Hrs	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.591" (15.00 mm)	Not For New Designs	ROHS3 Compliant
UPW1E331MPD6	Nichicon	UPW	330 µF	25 V	±20%	3000 Hrs	-55°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.591" (15.00 mm)	Active	ROHS3 Compliant
EEU-FM1E331L	Panasonic	FM-A	330 µF	25 V	±20%	3000 Hrs	-40°C ~ 105°C	0.138" (3.50 mm)	0.315" (8.00 mm)	0.650" (16.50 mm)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Upgrade Path:

EKZE250ELL331MH15D (Chemi-Con) is the direct upgrade from the obsolete KZE25VB331M8X15LL. Both components are from the same manufacturer and KZE series, ensuring design continuity. The EKZE250ELL331MH15D is active in production, ROHS3 compliant, and maintains identical electrical specifications and thermal ratings. The height difference of 0.059" (1.50 mm) is within typical PCB layout tolerances for through-hole components.

Extended Temperature Range Alternative:

ELXZ250ELL331MH15D (Chemi-Con, LXZ series) extends the operating temperature range to -55°C ~ 105°C and includes AEC-Q200 automotive qualification. This part is suitable for applications requiring enhanced low-temperature performance. Height and case diameter remain compatible with the original design.

Enhanced Lifetime Options:

EEU-EB1E331 (Panasonic, EB-A series) provides 10000 hours lifetime at 105°C, representing a 3.3× improvement over the original 3000-hour rating. This component is ROHS3 compliant and active in production. Height is 0.630" (16.00 mm), requiring verification of PCB clearance.

General-Purpose Active Alternatives:

UPW1E331MPD6 (Nichicon, UPW series) and EEU-FM1E331L (Panasonic, FM-A series) are both active production components with ROHS3 compliance. UPW1E331MPD6 extends the operating temperature to -55°C ~ 105°C. EEU-FM1E331L offers the highest ripple current capacity (1.24 A @ 100 kHz) and lowest impedance (41 mOhms) among all listed alternatives.

Not Recommended for New Designs:

UHE1E331MPD (Nichicon, UHE series) is designated "Not For New Designs" and should be avoided in new product development, despite meeting all electrical and mechanical compatibility criteria.

Frequently Asked Questions (FAQ)

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

A: Height variations are acceptable if PCB layout permits. The original KZE25VB331M8X15LL is 0.591" (15.00 mm). Substitute parts range from 0.591" to 0.650" (15.00 mm to 16.50 mm). Verify clearance above the component before selection.

Q: What is the difference between "Upgrade" and "Similar" substitute classifications?

A: Upgrade substitutes (EKZE250ELL331MH15D, ELXZ250ELL331MH15D, EEU-EB1E331, UHE1E331MPD, UPW1E331MPD6) are direct functional replacements with identical or superior electrical performance. Similar substitutes (EEU-FM1E331L) meet all compatibility criteria but may have different performance characteristics such as ripple current or impedance. Both categories are electrically and mechanically compatible.

Q: Why is the KZE25VB331M8X15LL obsolete?

A: The original part is listed as obsolete and non-ROHS3 compliant. Modern equivalents from the same and other manufacturers offer improved compliance status, extended availability, and in many cases enhanced performance specifications.

Q: Which substitute offers the best long-term reliability?

A: EEU-EB1E331 (Panasonic) provides 10000 hours lifetime at 105°C, the highest rating among all listed alternatives. This represents a significant reliability improvement over the original 3000-hour specification.

Q: Are all substitutes ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. The original KZE25VB331M8X15LL is non-compliant, making compliance upgrade a key benefit of substitution.

Q: Can I use these parts interchangeably in existing designs?

A: Yes, all listed substitute parts are electrically and mechanically compatible with the original KZE25VB331M8X15LL. Lead spacing (0.138" / 3.50 mm), case diameter (0.315" / 8.00 mm), and all electrical parameters are identical. Verify PCB clearance for height variations before assembly.

Q: What is the difference between ripple current ratings?

A: Ripple current capacity varies among substitutes. EEU-FM1E331L offers the highest ripple current (1.24 A @ 100 kHz), while ELXZ250ELL331MH15D offers the lowest (730 mA @ 100 kHz). Higher ripple current capacity indicates better performance in high-frequency switching applications. The original part specifies 995 mA @ 100 kHz.

Q: Which substitute is recommended for automotive applications?

A: ELXZ250ELL331MH15D (Chemi-Con, LXZ series) carries AEC-Q200 automotive qualification and extends the operating temperature range to -55°C ~ 105°C, making it suitable for automotive environments.

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