109LMU035M2CG Equivalent & Substitute Parts Reference

Part Overview

The 109LMU035M2CG is a 10000 µF, 35 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LMU series. This component features a radial, can-style snap-in package rated for 2000 hours at 105°C operating temperature. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for through-hole applications requiring general-purpose energy storage and filtering.

Substiute Parts

109LMU035M2CG

Cornell Dubilier / Illinois CapacitorIn Stock: 1113109LMU035M2CG Datasheet

Current PartRFQ

B41252A7109M000

EPCOS - TDK ElectronicsIn Stock: 1441B41252A7109M000 Datasheet

DirectRFQ

EKMH350VNN103MQ45W

Chemi-ConIn Stock: 1096EKMH350VNN103MQ45W Datasheet

DirectRFQ

381LX103M035J452

Cornell Dubilier Electronics (CDE)In Stock: 13263381LX103M035J452 Datasheet

UpgradeRFQ

LGU1V103MELA

NichiconIn Stock: 2067LGU1V103MELA Datasheet

UpgradeRFQ

LGY1V103MELA45

NichiconIn Stock: 825LGY1V103MELA45 Datasheet

UpgradeRFQ

SLP103M035C4P3

Cornell Dubilier Electronics (CDE)In Stock: 1181SLP103M035C4P3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 109LMU035M2CG is determined by strict equivalence across the following parameters:

Core Electrical Parameters (Non-Negotiable):

• Capacitance: 10000 µF (exact match required)
• Voltage Rating: 35 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)

Mechanical Parameters (Non-Negotiable):

• Package Type: Radial, Can - Snap-In (exact match required)
• Mounting Type: Through Hole (exact match required)
• Lead Spacing: 0.394" (10.00 mm) (exact match required)
• Height - Seated (Max): 1.850" (47.00 mm) (exact match required)

Performance Parameters (Allowable Variation):

• Lifetime @ 105°C: Equal to or greater than 2000 hours
• Operating Temperature Range: Must encompass -40°C to 105°C minimum
• ESR and Ripple Current: Variation permitted if electrical performance is maintained or improved

Compliance Parameters:

• RoHS Status: ROHS3 Compliant preferred for new designs
• REACH Status: REACH Unaffected or compliant

Substitute parts are categorized as Direct (equivalent performance), Upgrade (enhanced lifetime or performance), or Similar (minor dimensional or performance variation within acceptable tolerance).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Substitutes (Electrical & Mechanical Parity):

B41252A7109M000 (EPCOS - TDK Electronics) and EKMH350VNN103MQ45W (Chemi-Con) are direct functional equivalents with identical electrical ratings and 2000-hour lifetime matching the original specification. Both are active products with ROHS3 compliance. The B41252A7109M000 exhibits a slightly larger diameter (1.000" vs. 0.984") but maintains the same lead spacing and height, suitable for applications with standard PCB footprint tolerance. The EKMH350VNN103MQ45W provides lower ESR (41 mOhm @ 120 Hz) compared to the original 58.03 mOhm specification, offering improved ripple current performance.

Upgrade Substitutes (Enhanced Lifetime):

381LX103M035J452 (Cornell Dubilier Electronics), LGU1V103MELA (Nichicon), and LGY1V103MELA45 (Nichicon) provide extended operational lifetime at 105°C (3000 or 5000 hours versus 2000 hours). These components maintain identical mechanical dimensions and electrical ratings. The LGY1V103MELA45 offers the longest rated lifetime at 5000 hours, suitable for applications requiring extended service intervals. All three upgrade options are active products with ROHS3 compliance and REACH unaffected status.

Similar Substitute (Minor Dimensional Variation):

SLP103M035C4P3 (Cornell Dubilier Electronics) provides equivalent electrical performance with 3000-hour lifetime but features a reduced seated height of 1.772" (45.00 mm) compared to the standard 1.850" (47.00 mm). This component is suitable for space-constrained applications where the 0.078" height reduction is acceptable. All other mechanical and electrical parameters remain equivalent.

Selection Criteria:

• For direct replacement in existing designs: B41252A7109M000 or EKMH350VNN103MQ45W
• For improved reliability and extended service life: 381LX103M035J452, LGU1V103MELA, or LGY1V103MELA45
• For space-constrained applications: SLP103M035C4P3

All recommended substitutes are active products with current manufacturing status and modern compliance certifications (ROHS3).

Frequently Asked Questions (FAQ)

Q: Can I use B41252A7109M000 as a direct replacement for 109LMU035M2CG?

A: Yes. The B41252A7109M000 matches all core electrical parameters (10000 µF, 35 V, ±20% tolerance) and mechanical specifications (radial snap-in package, 0.394" lead spacing, 1.850" height, through-hole mounting). The slightly larger diameter (1.000" vs. 0.984") does not affect electrical function and accommodates standard PCB footprint tolerances.

Q: What is the difference between direct equivalent and upgrade substitutes?

A: Direct equivalents (B41252A7109M000, EKMH350VNN103MQ45W) maintain the original 2000-hour lifetime specification. Upgrade substitutes (381LX103M035J452, LGU1V103MELA, LGY1V103MELA45) provide extended lifetime ratings of 3000 or 5000 hours at 105°C, enabling longer service intervals without performance degradation. All maintain identical electrical ratings and mechanical compatibility.

Q: Is the SLP103M035C4P3 suitable for my application if space is limited?

A: The SLP103M035C4P3 is suitable only if the reduced seated height of 1.772" (45.00 mm) accommodates your PCB layout. All other electrical and mechanical parameters remain equivalent to the original specification. Verify clearance requirements before selection.

Q: Do all substitute parts meet RoHS compliance?

A: All recommended active substitute parts are ROHS3 compliant. The original 109LMU035M2CG (obsolete) does not specify RoHS status. For new designs or applications requiring RoHS certification, select from the active substitute options listed.

Q: Can I interchange parts with different lifetimes (2000 hrs vs. 3000 hrs vs. 5000 hrs)?

A: Yes, provided the application does not require the extended lifetime. A 5000-hour rated component (LGY1V103MELA45) is electrically and mechanically compatible with a 2000-hour specification (109LMU035M2CG). However, do not substitute a lower-lifetime component for a higher-lifetime requirement.

Q: What is the significance of ESR (Equivalent Series Resistance) variation?

A: ESR affects ripple current handling and heat dissipation. The original 109LMU035M2CG specifies 58.03 mOhm @ 120 Hz. The EKMH350VNN103MQ45W provides lower ESR (41 mOhm @ 120 Hz), improving ripple current performance. Lower ESR is beneficial for high-frequency applications; higher ESR is acceptable if ripple current requirements are met.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts use radial, can-style snap-in packages with through-hole mounting. Lead spacing (0.394" / 10.00 mm) is identical across all options, ensuring PCB footprint compatibility. Verify seated height requirements for space-constrained designs.

Q: Which substitute should I select for a new design?

A: For new designs, select from active products with ROHS3 compliance: B41252A7109M000, EKMH350VNN103MQ45W, 381LX103M035J452, LGU1V103MELA, LGY1V103MELA45, or SLP103M035C4P3. The LGY1V103MELA45 offers the longest rated lifetime (5000 hours) and is recommended for applications requiring maximum reliability and extended service intervals.