338LBB035M2BC Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 338LBB035M2BC is an aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor. This radial, can-style snap-in capacitor with 3300 µF capacitance and 35 V rated voltage is designed for general-purpose applications. The part is Active in status and RoHS3 compliant. Substitute parts are necessary to address inventory availability, extended thermal ratings, enhanced lifetime specifications, or voltage upgrading requirements while maintaining mechanical and electrical compatibility within the specified parameter tolerances.

Substiute Parts

338LBB035M2BC

Cornell Dubilier / Illinois CapacitorIn Stock: 850338LBB035M2BC Datasheet

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381LX332M035H012

Cornell Dubilier Electronics (CDE)In Stock: 6107381LX332M035H012 Datasheet

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381LX332M050H012

Cornell Dubilier Electronics (CDE)In Stock: 2680381LX332M050H012 Datasheet

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LGU1V332MELZ

NichiconIn Stock: 3118LGU1V332MELZ Datasheet

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LGY1V332MELZ25

NichiconIn Stock: 1112LGY1V332MELZ25 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for aluminum electrolytic capacitors is determined by equivalence in the following critical parameters: capacitance value (3300 µF), tolerance (±20%), rated voltage (minimum 35 V), mounting type (Through Hole), package style (Radial, Can - Snap-In), lead spacing (0.394" / 10.00 mm), and case dimensions (0.866" Dia × 1.063" Height). All substitute parts maintain identical capacitance, tolerance, and mechanical footprint specifications.

The following categories of substitutes are identified:

35 V Rated Voltage - Enhanced Thermal Performance (381LX332M035H012, LGU1V332MELZ): These parts maintain the original 35 V rating while offering improved operating temperature range (-40°C ~ 105°C) and extended lifetime rating (3000 Hrs @ 105°C), compared to the original part's -40°C ~ 85°C range and 3000 Hrs @ 85°C specification.

50 V Rated Voltage - Voltage Upgrade (381LX332M050H012): This substitute maintains identical capacitance and tolerance with an elevated rated voltage of 50 V, suitable for circuits requiring voltage margin enhancement while maintaining the same physical footprint and thermal performance characteristics (3000 Hrs @ 105°C).

Extended Lifetime - Long Duration Applications (LGY1V332MELZ25): This substitute provides the same capacitance and voltage ratings with an extended lifetime specification of 5000 Hrs @ 105°C, compared to 3000 Hrs @ 105°C for other substitutes.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts are Active in product status and RoHS3 compliant, ensuring continued regulatory compliance and ongoing manufacturer support. The 381LX332M035H012 (Cornell Dubilier Electronics, 35 V) and LGU1V332MELZ (Nichicon, 35 V) are direct electrical equivalents offering extended thermal performance to -40°C ~ 105°C with 3000 Hrs @ 105°C lifetime, superior to the original part's -40°C ~ 85°C range.

The 381LX332M050H012 (Cornell Dubilier Electronics, 50 V) provides voltage margin enhancement while maintaining identical mechanical compatibility and extended thermal specifications. This option is appropriate for circuits with voltage stress considerations.

The LGY1V332MELZ25 (Nichicon, 35 V, 5000 Hrs @ 105°C) addresses extended operational life requirements. This part offers the longest specified lifetime among all substitutes at 5000 Hrs @ 105°C.

All substitute parts maintain identical lead spacing (0.394" / 10.00 mm), case diameter (0.866" / 22.00 mm), and maximum seated height (1.063" / 27.00 mm), ensuring direct mechanical interchangeability in through-hole applications.

Frequently Asked Questions (FAQ)

Q: Are all substitute parts mechanically compatible with the original 338LBB035M2BC footprint?

A: Yes. All substitute parts maintain identical lead spacing of 0.394" (10.00 mm), case diameter of 0.866" (22.00 mm), and maximum seated height of 1.063" (27.00 mm). All are snap-in, radial can packages suitable for through-hole mounting.

Q: Can the 381LX332M050H012 (50 V) be used in a circuit designed for the 35 V original part?

A: Yes. The 381LX332M050H012 maintains the same capacitance, tolerance, and mechanical footprint. The 50 V rated voltage is equal to or exceeds the 35 V circuit requirement, providing voltage compatibility.

Q: What is the difference between the 381LX332M035H012 and the LGU1V332MELZ?

A: Both maintain 35 V rated voltage and 3300 µF capacitance with identical mechanical footprints. The primary differences are manufacturer (Cornell Dubilier vs. Nichicon) and ripple current ratings. The 381LX332M035H012 supports higher ripple current at 120 Hz (1.9 A) and 20 kHz (2.2 A), while the LGU1V332MELZ supports 1.45 A @ 120 Hz and 1.6675 A @ 50 kHz.

Q: When should the LGY1V332MELZ25 be selected?

A: The LGY1V332MELZ25 is appropriate for applications requiring extended operational lifetime, offering 5000 Hrs @ 105°C compared to 3000 Hrs @ 105°C for other substitutes. This part maintains 35 V rating and identical mechanical compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant, ensuring regulatory alignment with the original 338LBB035M2BC.

Q: What is the operating temperature range difference, and why does it matter?

A: The original 338LBB035M2BC operates -40°C ~ 85°C with 3000 Hrs @ 85°C. All substitutes extend the upper operating temperature to 105°C with lifetime ratings at 105°C (3000 Hrs or 5000 Hrs), providing margin for higher thermal environments or extended service life projections.