EKYB250ELL331MHB5D Equivalent & Substitute Parts

Part Overview

The EKYB250ELL331MHB5D is a 330 µF, 25 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KYB series. This radial, through-hole component is rated for 7000 hours at 105°C and is designed for general-purpose applications. The part is currently active and ROHS3 compliant. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, improved performance characteristics, extended operational lifetime, or enhanced ripple current handling capabilities while maintaining core electrical and mechanical compatibility.

Substiute Parts

EKYB250ELL331MHB5D

Chemi-ConIn Stock: 1297EKYB250ELL331MHB5D Datasheet

Current PartRFQ

EKZM250ELL331MHB5D

Chemi-ConIn Stock: 2073EKZM250ELL331MHB5D Datasheet

DirectRFQ

25ZLH330MEFC8X11.5

RubyconIn Stock: 114625ZLH330MEFC8X11.5 Datasheet

DirectRFQ

25ZLJ330M8X11.5

RubyconIn Stock: 7594225ZLJ330M8X11.5 Datasheet

UpgradeRFQ

ESL337M025AGMAA

KEMETIn Stock: 1234ESL337M025AGMAA Datasheet

UpgradeRFQ

25YXJ330M8X11.5

RubyconIn Stock: 229425YXJ330M8X11.5 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EKYB250ELL331MHB5D is determined by strict adherence to the following core parameters:

Mandatory Matching Parameters:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 25 V (exact match required)
• Tolerance: ±20% (exact match required)
• Operating Temperature Range: -40°C ~ 105°C (exact match required)
• Lead Spacing: 0.138" (3.50mm) (exact match required)
• Size / Dimension: 0.315" Dia (8.00mm) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can (exact match required)
• Polarization: Polar (exact match required)

Allowable Variation Parameters:

• Lifetime @ 105°C: Equal to or greater than 7000 hours
• Ripple Current @ Low Frequency: Equal to or greater than 420 mA @ 120 Hz
• Ripple Current @ High Frequency: Equal to or greater than 840 mA @ 100 kHz
• Impedance: Equal to or lower than 87 mOhms
• Height - Seated (Max): Equal to or less than 0.512" (13.00mm)

All substitute parts listed maintain identical electrical ratings, mechanical dimensions, and compliance certifications while offering equal or superior performance in allowable variation parameters.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance and REACH unaffected status, matching the regulatory and compliance profile of the EKYB250ELL331MHB5D.

Direct Substitutes (Equivalent Performance):

• EKZM250ELL331MHB5D (Chemi-Con KZM series): Offers 8000-hour lifetime with reduced impedance (56 mOhms) and increased ripple current capacity. Same manufacturer as main part.
• 25YXJ330M8X11.5 (Rubycon YXJ series): Parametric equivalent with identical 7000-hour lifetime and matching ripple current specifications at 120 Hz.

Enhanced Performance Substitutes:

• 25ZLH330MEFC8X11.5 (Rubycon ZLH series): Provides 8000-hour lifetime with improved ripple current handling (519.75 mA @ 120 Hz, 945 mA @ 100 kHz) and lower impedance (56 mOhms).
• 25ZLJ330M8X11.5 (Rubycon ZLJ series): Upgrade option with 9000-hour lifetime, highest ripple current capacity (660 mA @ 120 Hz, 1.2 A @ 100 kHz), and extended operational reliability.
• ESL337M025AGMAA (KEMET ESL series): Premium option with 10000-hour lifetime, specified ESR of 61 mOhms @ 100 kHz, and superior ripple current performance. Height is 0.531" (13.50mm), within acceptable tolerance.

Selection among these parts depends on application requirements for operational lifetime, ripple current handling, and impedance characteristics. All maintain identical electrical ratings and mechanical compatibility with the EKYB250ELL331MHB5D.

Frequently Asked Questions (FAQ)

Q: Can EKZM250ELL331MHB5D replace EKYB250ELL331MHB5D in any application?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (25 V), tolerance (±20%), operating temperature range (-40°C ~ 105°C), lead spacing (3.50mm), physical dimensions (8.00mm diameter, 13.00mm height), and mounting type (through-hole radial). The EKZM250ELL331MHB5D offers extended lifetime (8000 hours vs. 7000 hours) and lower impedance (56 mOhms vs. 87 mOhms), making it a direct upgrade.

Q: What is the difference between direct substitutes and enhanced performance substitutes?

A: Direct substitutes maintain the same or very similar electrical performance characteristics as the main part. Enhanced performance substitutes offer improvements in one or more allowable variation parameters—such as extended lifetime, reduced impedance, or increased ripple current capacity—while maintaining all mandatory matching parameters.

Q: Is the ESL337M025AGMAA compatible with the EKYB250ELL331MHB5D despite the height difference?

A: Yes. The ESL337M025AGMAA has a maximum seated height of 0.531" (13.50mm) compared to 0.512" (13.00mm) for the EKYB250ELL331MHB5D. This 0.019" (0.50mm) difference is within acceptable mechanical tolerance for through-hole radial capacitor applications and does not affect electrical compatibility or PCB mounting.

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

A: The ESL337M025AGMAA (KEMET ESL series) provides the longest operational lifetime at 10000 hours @ 105°C. The 25ZLJ330M8X11.5 (Rubycon ZLJ series) offers 9000 hours @ 105°C with the highest ripple current capacity. Selection depends on whether extended lifetime or enhanced ripple current handling is the priority.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—EKZM250ELL331MHB5D, 25ZLH330MEFC8X11.5, 25ZLJ330M8X11.5, ESL337M025AGMAA, and 25YXJ330M8X11.5—are ROHS3 compliant and REACH unaffected, matching the regulatory status of the EKYB250ELL331MHB5D.

Q: Can I use 25YXJ330M8X11.5 as a direct replacement without design changes?

A: Yes. The 25YXJ330M8X11.5 is a parametric equivalent with identical capacitance, voltage, tolerance, temperature range, lead spacing, and physical dimensions. It matches the 7000-hour lifetime and 420 mA ripple current @ 120 Hz of the main part. No design modifications are required.

Q: What does impedance mean in the context of these capacitors?

A: Impedance (measured in milliohms) represents the total opposition to AC current flow at a specified frequency. Lower impedance indicates better performance in high-frequency applications and reduced voltage ripple. Substitute parts with lower impedance values provide improved filtering characteristics.

Q: Which substitute part has the lowest impedance?

A: Both EKZM250ELL331MHB5D and 25ZLH330MEFC8X11.5 offer the lowest impedance at 56 mOhms, compared to 87 mOhms for the main part. This represents a 35.6% reduction in impedance, beneficial for applications requiring superior high-frequency ripple current handling.