339LBA025M2EH Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 339LBA025M2EH is a 33000 µF, 25 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor. This radial, can-format snap-in capacitor is designed for general purpose applications requiring high capacitance in a compact form factor. The part is actively produced and ROHS3 compliant. Equivalent and substitute parts are necessary to address supply chain variability, performance optimization, and application-specific requirements such as extended temperature operation or improved lifetime ratings.

Substiute Parts

339LBA025M2EH

Cornell Dubilier / Illinois CapacitorIn Stock: 770339LBA025M2EH Datasheet

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35USG33000MEFCSN35X50

RubyconIn Stock: 27399435USG33000MEFCSN35X50 Datasheet

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380LX333M035A052

Cornell Dubilier Electronics (CDE)In Stock: 5488380LX333M035A052 Datasheet

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LGU1E333MELC

NichiconIn Stock: 274076LGU1E333MELC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Three substitute parts are identified for the 339LBA025M2EH. These substitutes maintain the critical electrical parameters that enable direct replacement: identical capacitance value (33000 µF), tolerance (±20%), identical mechanical form factor (1.378" Dia, 2.047" height, 10.00 mm lead spacing), and identical mounting configuration (radial, can, snap-in, through-hole).

Substitution eligibility is determined by the following key parameters:

• Capacitance: 33000 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage Rating: 25 V or higher (backward compatible)
• Package / Case: Radial, Can - Snap-In (exact match required)
• Lead Spacing: 0.394" / 10.00 mm (exact match required)
• Size / Dimension: 1.378" Dia / 35.00 mm (exact match required)
• Height - Seated: 2.047" / 52.00 mm (exact match required)
• Mounting Type: Through Hole (exact match required)
• Polarization: Polar (exact match required)

Parameter Comparison

Engineering Selection Recommendations

All substitute parts (LGU1E333MELC, 35USG33000MEFCSN35X50, and 380LX333M035A052) are actively produced and ROHS3 compliant, meeting the same regulatory requirements as the main part.

LGU1E333MELC (Nichicon) provides identical voltage rating (25 V) and maintains full mechanical compatibility. This part offers extended temperature operation (-40°C ~ 105°C) and improved lifetime rating (3000 Hrs @ 105°C) compared to the main part (2000 Hrs @ 85°C), making it suitable for applications requiring enhanced thermal performance or extended service life.

35USG33000MEFCSN35X50 (Rubycon) and 380LX333M035A052 (Cornell Dubilier) both feature elevated voltage ratings (35 V), providing increased voltage margin and extended lifetime (3000 Hrs @ 85°C). The 380LX333M035A052 specifies lower ESR (18 mOhm @ 120 Hz) compared to the main part (22.61 mOhm @ 120 Hz), indicating reduced power dissipation and improved thermal performance in high ripple current applications.

Frequently Asked Questions (FAQ)

Q: Can all substitute parts replace the 339LBA025M2EH in existing designs? A: All four parts share identical mechanical form factors and capacitance values. However, the two 35 V rated substitutes (35USG33000MEFCSN35X50 and 380LX333M035A052) are not backward compatible with designs that specifically reference the 25 V rating. The LGU1E333MELC maintains the 25 V rating and provides direct compatibility.

Q: What is the significance of ESR differences between parts? A: Equivalent Series Resistance (ESR) affects power dissipation and thermal performance. Lower ESR values indicate reduced heating during ripple current operation. The 380LX333M035A052 specifies 18 mOhm compared to 22.61 mOhm for the main part, providing improved efficiency in high ripple current applications.

Q: Why would one select a 35 V substitute over the original 25 V part? A: A 35 V substitute provides increased voltage margin for designs operating near the maximum rated voltage, improving reliability margins. Both 35 V substitutes offer extended lifetime ratings (3000 Hrs @ 85°C versus 2000 Hrs @ 85°C), beneficial for mission-critical applications.

Q: Are all parts ROHS3 compliant? A: Yes. All parts, including the main part and all substitutes, are ROHS3 compliant and REACH unaffected, meeting current environmental regulatory requirements.

Q: How do ripple current specifications affect selection? A: Ripple current capacity varies across the parts. The main part specifies 9 A @ 10 kHz. Applications requiring specific ripple current handling at particular frequencies should confirm that the selected substitute meets the required current limit at the applicable frequency.