LP103M035E7P3 Equivalent & Substitute Parts

Part Overview

The LP103M035E7P3 is a 10000 µF, 35 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in the LP series. This radial, can-style snap-in component is designed for general-purpose applications requiring high capacitance at moderate voltage ratings. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts become necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits selection from qualified alternatives meeting identical electrical and mechanical specifications. The parts listed below satisfy the core functional requirements of the LP103M035E7P3 while maintaining compatibility with standard through-hole mounting configurations.

Substiute Parts

LP103M035E7P3

Cornell Dubilier Electronics (CDE)In Stock: 922LP103M035E7P3 Datasheet

Current PartRFQ

381LX103M035J452

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

SimilarRFQ

SLP103M035C7P3

Cornell Dubilier Electronics (CDE)In Stock: 9901SLP103M035C7P3 Datasheet

SimilarRFQ

35MXC10000MEFCSN30X30

RubyconIn Stock: 112735MXC10000MEFCSN30X30 Datasheet

DirectRFQ

35MXG10000MEFCSN30X30

RubyconIn Stock: 83535MXG10000MEFCSN30X30 Datasheet

DirectRFQ

LGU1V103MELB

NichiconIn Stock: 4552LGU1V103MELB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP103M035E7P3 is determined by strict adherence to the following parameters:

Core Electrical Requirements:

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

Core Mechanical Requirements:

• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can - Snap-In (exact match required)
• Lead Spacing: 0.394" (10.00mm) (exact match required)
• Operating Temperature: -40°C ~ 105°C (exact match required)

Compliance Requirements:

• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) or Not Applicable (acceptable)

All substitute parts listed below meet these criteria. Physical dimensions (diameter and height) may vary within the constraints of the snap-in package form factor, provided the lead spacing and mounting footprint remain compatible with the original design.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Preferred):

The LP103M035E7P3 remains the recommended choice for new designs. This part is active in production, maintains full ROHS3 compliance, and is available in quantity (858 pcs in stock).

Secondary Selection (Active Alternatives):

The following parts are suitable substitutes for the LP103M035E7P3 and are currently active in production:

• 381LX103M035J452 (CDE): Active status with extended lifetime rating (3000 Hrs @ 105°C vs. 1000 Hrs). Smaller diameter (25mm vs. 30mm) but taller profile (47mm vs. 40mm). Highest inventory availability (13,247 pcs). Suitable for applications where vertical space permits and horizontal space is constrained.

• SLP103M035C7P3 (CDE): Active status with extended lifetime rating (3000 Hrs @ 105°C). Smaller diameter (25mm) with matching height (40mm) to the primary part. Good inventory availability (9,817 pcs). Suitable for space-constrained applications requiring CDE sourcing.

• 35MXG10000MEFCSN30X30 (Rubycon): Active status with extended lifetime rating (3000 Hrs @ 105°C). Identical diameter (30mm) with reduced height (32mm vs. 40mm). Suitable for applications where vertical space is limited. Moderate inventory (762 pcs).

• LGU1V103MELB (Nichicon): Active status with extended lifetime rating (3000 Hrs @ 105°C). Identical diameter (30mm) with intermediate height (37mm). Good inventory availability (4,542 pcs). Suitable for multi-source procurement strategies.

Not Recommended for New Designs:

• 35MXC10000MEFCSN30X30 (Rubycon): Product status is "Not For New Designs." This part is functionally equivalent but should not be selected for new circuit designs. Existing designs currently using this part may continue to source it from available inventory (1,112 pcs).

Frequently Asked Questions (FAQ)

Q: Can I substitute the LP103M035E7P3 with any of the listed parts without PCB modification?

A: Substitution depends on physical dimensions and PCB layout. All listed parts maintain the same lead spacing (10.00mm), which is the critical parameter for through-hole mounting. However, diameter and height variations exist. Parts with identical diameter (30mm) and similar height (35-40mm) require no PCB modification: SLP103M035C7P3, 35MXG10000MEFCSN30X30, and LGU1V103MELB. Parts with smaller diameter (25mm) or significantly different heights may require PCB layout review.

Q: What is the difference between the LP103M035E7P3 and the 381LX103M035J452?

A: Both are 10000 µF, 35 V aluminum electrolytic capacitors from CDE with identical electrical specifications and lead spacing. The primary differences are physical dimensions and lifetime rating. The 381LX103M035J452 has a smaller diameter (25mm vs. 30mm) but greater height (47mm vs. 40mm), and offers extended lifetime (3000 Hrs @ 105°C vs. 1000 Hrs @ 105°C).

Q: Why do some substitute parts have longer lifetime ratings?

A: Lifetime rating (measured in hours at 105°C) is a separate specification from capacitance, voltage, and tolerance. Extended lifetime ratings (3000 Hrs vs. 1000 Hrs) indicate improved thermal stability and longer operational life under elevated temperature conditions. This is provided as additional performance data and does not affect electrical substitution eligibility.

Q: Can I use the 35MXC10000MEFCSN30X30 in a new design?

A: No. The 35MXC10000MEFCSN30X30 carries a product status of "Not For New Designs." This designation indicates the manufacturer is discontinuing or has discontinued this part for new applications. Existing designs currently using this part may continue procurement from available inventory, but new designs should select from active alternatives: 35MXG10000MEFCSN30X30 (Rubycon), 381LX103M035J452, SLP103M035C7P3 (CDE), or LGU1V103MELB (Nichicon).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the primary part LP103M035E7P3. All parts are also REACH Unaffected and classified as EAR99 for export control purposes.

Q: What is the significance of the snap-in package style?

A: The snap-in package indicates a specific mechanical mounting method where the capacitor body is secured to the PCB through a snap-fit mechanism in addition to the through-hole lead connections. All listed substitute parts use identical snap-in package geometry, ensuring mechanical compatibility with existing PCB designs. Lead spacing (10.00mm) is the critical parameter for through-hole alignment.

Q: If I need to replace the LP103M035E7P3 in an existing assembly, which substitute should I choose?

A: For direct replacement in existing assemblies, prioritize parts with matching physical dimensions: SLP103M035C7P3 (25mm diameter, 40mm height matches the original) or 35MXG10000MEFCSN30X30 (30mm diameter, 32mm height is slightly shorter). Both are active products with extended lifetime ratings. If the PCB layout permits dimensional variation, 381LX103M035J452 offers the highest inventory availability.

Q: Do all substitute parts have the same ripple current ratings?

A: No. Ripple current specifications vary among substitute parts and are not listed as core substitution criteria. The LP103M035E7P3 specifies 3 A @ 120 Hz and 3.3 A @ 100 kHz. Substitute parts provide different ripple current values at different frequencies. For applications with specific ripple current requirements, consult individual datasheets to confirm suitability.