381LX331M250H022 Equivalent & Substitute Parts

Part Overview

The 381LX331M250H022 is a 330 µF 250 V aluminum electrolytic capacitor from Cornell Dubilier Electronics, configured as a radial, can-type snap-in component. This Active-status component is designed for general-purpose applications requiring stable capacitance and extended operational life at elevated temperatures. Alternative components become necessary when primary sourcing is unavailable or when specific operational parameters require different performance characteristics within acceptable substitution criteria.

Substiute Parts

381LX331M250H022

Cornell Dubilier Electronics (CDE)In Stock: 940381LX331M250H022 Datasheet

Current PartRFQ

250MXG330MEFCSN22X30

RubyconIn Stock: 656871250MXG330MEFCSN22X30 Datasheet

DirectRFQ

LGW2E331MELZ30

NichiconIn Stock: 1218LGW2E331MELZ30 Datasheet

DirectRFQ

LGN2E331MELZ30

NichiconIn Stock: 802LGN2E331MELZ30 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 381LX331M250H022 is permitted based on strict electrical and mechanical parameter equivalence. All substitute parts must maintain:

Electrical Equivalence: Capacitance value (330 µF), voltage rating (250 V), and tolerance (±20%) must be identical. The thermal lifetime requirement (3000 Hrs @ 105°C) defines the reliability profile and must be maintained.

Mechanical Compatibility: Package type (Radial, Can - Snap-In), lead spacing (10.00mm), and overall dimensions (22.00mm diameter, 32.00mm maximum height) ensure direct mounting compatibility without circuit board redesign.

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and REACH unaffected status to satisfy equivalent regulatory standing.

The substitute parts are categorized as follows:

• Direct Manufacturer Substitutes: 250MXG330MEFCSN22X30 (Rubycon) and LGW2E331MELZ30 (Nichicon) meet all core electrical specifications with identical capacitance, voltage, tolerance, and thermal lifetime.

• Parametric Equivalent: LGN2E331MELZ30 (Nichicon) matches all core electrical specifications and thermal lifetime with identical physical dimensions and mounting compatibility.

Parameter Comparison

Engineering Selection Recommendations

All four components are Active-status products with full ROHS3 compliance and REACH unaffected certification, ensuring equivalent regulatory standing for new design implementations and replacement scenarios.

381LX331M250H022 offers the baseline specification with ESR of 502mOhm @ 120Hz and ripple current performance of 1.2 A @ 120 Hz and 1.7 A @ 20 kHz, with unlimited moisture sensitivity level (MSL 1).

250MXG330MEFCSN22X30 (Rubycon MXG series) provides equivalent electrical performance with enhanced ripple current ratings of 1.51 A @ 120 Hz and 2.265 A @ 10 kHz. The operating temperature lower limit is -25°C versus -40°C on the original. With 656,850 units in stock, sourcing availability is superior.

LGW2E331MELZ30 (Nichicon LGW series) matches the original -40°C to 105°C operating range with improved ripple current performance of 1.8 A @ 120 Hz and 2.7 A @ 50 kHz. Maximum seated height is 1.181" (30.00mm), providing a 0.079" reduction compared to the original 1.260" specification, beneficial for space-constrained applications. Current inventory is 1,121 units.

LGN2E331MELZ30 (Nichicon LGN series) maintains identical electrical specifications to the original with -40°C to 105°C operating range and identical 1.260" maximum height. Ripple current performance is 1.2 A @ 120 Hz and 1.8 A @ 50 kHz. Inventory level is 700 units.

Frequently Asked Questions (FAQ)

Q: Can any of these substitutes be used directly without circuit board modification?

All substitute components maintain identical lead spacing (10.00mm) and body diameter (22.00mm). The LGW2E331MELZ30 features a reduced height (1.181" versus 1.260"), which provides additional mechanical clearance. No circuit board redesign is required for any substitute.

Q: Are there differences in performance between the substitutes?

Ripple current performance varies across the product range. The Rubycon and Nichicon LGW models offer enhanced ripple current handling at high frequencies compared to the original CDE and Nichicon LGN specifications. Selection depends on the application's specific ripple current requirements at the operating frequency.

Q: What is the significance of the operating temperature lower limit difference?

The Rubycon 250MXG330MEFCSN22X30 operates from -25°C to 105°C, compared to -40°C to 105°C on the other components. This difference affects applications operating in extremely cold environments. For applications with minimum ambient temperatures above -25°C, this specification difference is not limiting.

Q: Do all substitutes meet the same compliance requirements?

All four components are ROHS3 compliant and REACH unaffected, providing equivalent regulatory standing. The original component has MSL 1 (Unlimited) moisture sensitivity, while the Nichicon products do not specify MSL, indicating they are not moisture-sensitive components.

Q: Why would I choose one substitute over another?

Component selection depends on application-specific factors: inventory availability, required ripple current performance at the operating frequency, operating temperature minimum, and spatial constraints. The LGW2E331MELZ30 offers the shortest height for space-critical applications. The 250MXG330MEFCSN22X30 offers the largest ripple current capacity. The LGN2E331MELZ30 provides the closest electrical match to the original.