LP391M200C5P3 Equivalent & Substitute Parts Reference

Part Overview

The LP391M200C5P3 is a 390 µF, 200 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is classified as Active and serves general-purpose applications requiring stable capacitance and extended operational life. The part is ROHS3 compliant and REACH unaffected, meeting current environmental standards.

Substitute parts become necessary when the original LP391M200C5P3 experiences supply constraints, inventory depletion, or when design requirements permit alternative electrical or mechanical specifications. The substitute parts listed maintain core functional equivalence while offering variations in performance characteristics such as equivalent series resistance (ESR), ripple current capacity, and operational lifetime.

Substiute Parts

LP391M200C5P3

Cornell Dubilier Electronics (CDE)In Stock: 712LP391M200C5P3 Datasheet

Current PartRFQ

381LR391M200H022

Cornell Dubilier Electronics (CDE)In Stock: 7734381LR391M200H022 Datasheet

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381LX391M200H022

Cornell Dubilier Electronics (CDE)In Stock: 7864381LX391M200H022 Datasheet

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LGU2E391MELA

NichiconIn Stock: 906LGU2E391MELA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP391M200C5P3 is determined by strict adherence to the following core parameters:

Critical Parameters (Must Match):

• Capacitance: 390 µF
• Tolerance: ±20%
• Mounting Type: Through Hole
• Package / Case: Radial, Can - Snap-In
• Polarization: Polar
• Lead Spacing: 10.00 mm
• Operating Temperature Range: -40°C to 105°C

Allowable Variation Parameters:

• Voltage - Rated: Equal to or greater than 200 V
• ESR @ 120Hz: Lower values indicate improved performance
• Lifetime @ 105°C: Equal to or greater than 1000 Hrs
• Ripple Current: Equal to or greater than specified values
• Physical Dimensions (Diameter, Height): Variations permitted within PCB layout constraints
• Manufacturer: Different manufacturers acceptable if all critical parameters align

Substitute Categories:

Direct Substitutes (Same Voltage Rating):

• 381LR391M200H022 (CDE, 200 V)
• 381LX391M200H022 (CDE, 200 V)

Upgrade Substitute (Higher Voltage Rating):

• LGU2E391MELA (Nichicon, 250 V)

Parameter Comparison

Engineering Selection Recommendations

381LR391M200H022 (CDE) - Direct Substitute

The 381LR391M200H022 maintains identical electrical specifications (390 µF, ±20%, 200 V) and mechanical compatibility with the LP391M200C5P3. This part offers improved performance characteristics: ESR is reduced from 640 mOhm to 510 mOhm at 120 Hz, and operational lifetime extends from 1000 Hrs to 3000 Hrs at 105°C. Ripple current capacity increases across both low and high frequency ranges. The physical diameter reduces from 25.00 mm to 22.00 mm, and height reduces from 35.00 mm to 32.00 mm, providing a more compact footprint while maintaining the 10.00 mm lead spacing. Both parts are ROHS3 compliant and REACH unaffected. This substitute is suitable for direct replacement in applications where PCB layout accommodates the smaller dimensions.

381LX391M200H022 (CDE) - Direct Substitute

The 381LX391M200H022 is electrically equivalent to the LP391M200C5P3 with matching capacitance, tolerance, and voltage rating. This part delivers extended operational lifetime of 3000 Hrs at 105°C compared to the original 1000 Hrs. Physical dimensions match the 381LR variant (22.00 mm diameter, 32.00 mm height), offering space savings. Lead spacing remains at 10.00 mm. ESR data is not specified for this part. Ripple current at 120 Hz is 1.3 A, and at 20 kHz is 1.8 A. ROHS3 compliance and REACH unaffected status are maintained. This substitute is applicable where the reduced physical footprint is advantageous and ESR specification is not critical.

LGU2E391MELA (Nichicon) - Upgrade Substitute

The LGU2E391MELA represents an upgrade option with identical capacitance and tolerance but elevated voltage rating of 250 V compared to the original 200 V specification. This higher voltage rating provides additional safety margin in applications subject to voltage transients or overvoltage conditions. Operational lifetime extends to 3000 Hrs at 105°C. Physical dimensions match the original LP391M200C5P3 (25.00 mm diameter, 35.00 mm height), ensuring direct mechanical compatibility without PCB layout modifications. Lead spacing is 10.00 mm. Ripple current capacity at 120 Hz is 1.49 A and at 50 kHz is 2.235 A. ROHS3 compliance and REACH unaffected status apply. MSL is not applicable for this Nichicon part. This substitute is selected when design specifications permit or require higher voltage rating and when manufacturer diversity is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the 381LR391M200H022 be used as a direct replacement for the LP391M200C5P3 in all applications?

A: The 381LR391M200H022 is electrically and functionally equivalent to the LP391M200C5P3 with identical capacitance (390 µF), tolerance (±20%), and voltage rating (200 V). The primary consideration is physical dimensions: the 381LR variant is smaller (22.00 mm diameter vs. 25.00 mm, and 32.00 mm height vs. 35.00 mm). Direct replacement is possible if the PCB layout accommodates the reduced footprint. Lead spacing remains identical at 10.00 mm, ensuring proper fit in existing through-hole mounting positions.

Q: What is the advantage of selecting the 381LX391M200H022 over the LP391M200C5P3?

A: The 381LX391M200H022 offers three primary advantages: (1) Extended operational lifetime of 3000 Hrs at 105°C compared to 1000 Hrs for the original part, improving long-term reliability; (2) Reduced physical dimensions (22.00 mm diameter, 32.00 mm height) providing space savings on the PCB; (3) Maintained electrical equivalence with 390 µF capacitance, ±20% tolerance, and 200 V rating. The trade-off is that ESR is not specified for this part.

Q: When should the LGU2E391MELA (Nichicon) be selected instead of CDE alternatives?

A: The LGU2E391MELA is selected when the application design permits or requires a higher voltage rating of 250 V instead of 200 V. This upgrade provides additional voltage margin for circuits subject to transient overvoltage conditions. The Nichicon part maintains identical capacitance and tolerance, extends operational lifetime to 3000 Hrs at 105°C, and preserves the original physical dimensions (25.00 mm diameter, 35.00 mm height), eliminating PCB layout concerns. Manufacturer diversity may also be a selection criterion for supply chain resilience.

Q: Are all substitute parts ROHS3 compliant and REACH unaffected?

A: Yes. The LP391M200C5P3, 381LR391M200H022, 381LX391M200H022, and LGU2E391MELA are all ROHS3 compliant and REACH unaffected. This ensures compliance with current environmental regulations across all substitute options.

Q: What is the significance of ESR (Equivalent Series Resistance) in selecting a substitute?

A: ESR affects ripple current handling capability and heat dissipation. The LP391M200C5P3 has an ESR of 640 mOhm at 120 Hz. The 381LR391M200H022 offers improved performance with 510 mOhm ESR at 120 Hz, resulting in lower heat generation and higher ripple current capacity. The 381LX391M200H022 and LGU2E391MELA do not specify ESR values. In applications with high ripple current requirements, the 381LR variant with lower ESR is preferred.

Q: Can the substitute parts handle the same ripple current as the original LP391M200C5P3?

A: All substitute parts meet or exceed the ripple current specifications of the LP391M200C5P3. At 120 Hz, the original part is rated for 980 mA. The 381LR391M200H022 handles 1.71 A, the 381LX391M200H022 handles 1.3 A, and the LGU2E391MELA handles 1.49 A. At high frequencies, all substitutes provide equal or superior ripple current capacity, making them suitable for applications with demanding ripple current requirements.

Q: Is the Moisture Sensitivity Level (MSL) rating important for substitute selection?

A: The LP391M200C5P3, 381LR391M200H022, and 381LX391M200H022 all have MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. The LGU2E391MELA has MSL listed as Not Applicable. For most applications, this difference is not significant. MSL becomes relevant only in high-humidity manufacturing environments or extended storage conditions requiring special handling protocols.

Q: What is the lead spacing specification and why does it matter?

A: All parts, including the original LP391M200C5P3 and all substitutes, have a lead spacing of 10.00 mm (0.394 inches). This specification ensures compatibility with existing PCB through-hole patterns. Lead spacing is a critical parameter for mechanical fit; all listed substitutes maintain this specification, confirming direct mounting compatibility without PCB redesign.

Q: Are there any performance trade-offs when selecting the smaller-diameter substitutes (381LR391M200H022 or 381LX391M200H022)?

A: The smaller diameter (22.00 mm vs. 25.00 mm) and height (32.00 mm vs. 35.00 mm) of the 381LR and 381LX variants provide space savings without electrical performance degradation. The 381LR variant actually improves performance with lower ESR and higher ripple current capacity. The 381LX variant maintains electrical equivalence with extended lifetime. The primary consideration is PCB layout compatibility; if the reduced footprint fits within available space, no performance trade-offs exist.