339LBA025M2EG Equivalent & Substitute Parts

Part Overview

The 339LBA025M2EG is a 33000 µF, 25 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LBA series. This radial, can-style snap-in capacitor with through-hole mounting is designed for general-purpose applications requiring bulk energy storage and filtering. The part is active in production with 693 units currently in stock. Alternative models are available to accommodate different performance requirements, particularly regarding equivalent series resistance (ESR), operational lifetime, and ripple current specifications.

Substiute Parts

339LBA025M2EG

Cornell Dubilier / Illinois CapacitorIn Stock: 716339LBA025M2EG Datasheet

Current PartRFQ

SLPX333M025H4P3

Cornell Dubilier Electronics (CDE)In Stock: 5605SLPX333M025H4P3 Datasheet

DirectRFQ

LLS1E333MELC

NichiconIn Stock: 273924LLS1E333MELC Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 339LBA025M2EG is determined by strict equivalence in the following critical electrical and mechanical parameters:

Critical Electrical Equivalence Parameters:

• Capacitance: 33000 µF (exact match required)
• Voltage Rating: 25 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)

Compatible Mechanical Parameters:

• Package / Case: Radial, Can - Snap-In (exact match required)
• Mounting Type: Through Hole (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 (Max): Must not exceed design space constraints

Performance Parameters (Allowed Variation):

• ESR (Equivalent Series Resistance): Lower values are acceptable
• Lifetime @ Temperature: Higher values are acceptable
• Ripple Current specifications: Must meet or exceed application requirements
• Operating Temperature Range: Must encompass -40°C ~ 85°C minimum

The SLPX333M025H4P3 and LLS1E333MELC meet all critical electrical and mechanical requirements and are listed as direct substitutes for the 339LBA025M2EG.

Parameter Comparison

Engineering Selection Recommendations

Both SLPX333M025H4P3 and LLS1E333MELC are equivalent substitutes for the 339LBA025M2EG based on critical electrical and mechanical parameters.

SLPX333M025H4P3 offers improved performance characteristics over the main part with lower ESR (18 mOhm vs. 22.61 mOhm @ 120 Hz) and extended lifetime (3000 Hrs @ 85°C vs. 2000 Hrs @ 85°C). The height dimension is reduced to 1.772" (45.00 mm), which may provide additional board space. All parts are ROHS3 compliant and active in production.

LLS1E333MELC provides equivalent height to the main part (1.850" / 47.00 mm) and extended lifetime (3000 Hrs @ 85°C). ESR is not specified for this part. This Nichicon product offers the largest inventory availability (273,882 units in stock).

Selection between these substitutes depends on application-specific requirements regarding ESR performance, available board space, lifetime requirements, and inventory availability.

Frequently Asked Questions (FAQ)

Q: What makes SLPX333M025H4P3 and LLS1E333MELC acceptable substitutes for 339LBA025M2EG?

A: Both parts match the critical electrical specifications (33000 µF, 25 V, ±20% tolerance) and mechanical parameters (radial snap-in package, through-hole mounting, 10.00 mm lead spacing, 35.00 mm diameter). All three parts operate across the same temperature range (-40°C ~ 85°C) and are ROHS3 compliant, making them suitable for direct replacement in general-purpose applications.

Q: What are the physical differences between these three capacitors?

A: The main dimensional variation is height: the 339LBA025M2EG and LLS1E333MELC both measure 1.850" (47.00 mm) maximum seated height, while the SLPX333M025H4P3 is slightly shorter at 1.772" (45.00 mm). All three share identical diameter (1.378" / 35.00 mm) and lead spacing (0.394" / 10.00 mm). This height difference may be significant for applications with restricted vertical space.

Q: How do the performance characteristics differ?

A: The SLPX333M025H4P3 has the lowest ESR at 18 mOhm @ 120 Hz compared to 22.61 mOhm for the 339LBA025M2EG. Both SLPX333M025H4P3 and LLS1E333MELC offer longer operational lifetime (3000 Hrs @ 85°C) versus the main part's 2000 Hrs @ 85°C. ESR for the LLS1E333MELC is not specified in available data. Lower ESR reduces heat generation and improves efficiency in ripple current applications.

Q: Are there any compliance or certification differences?

A: All three parts are ROHS3 compliant, REACH unaffected, and rated under ECCN EAR99. The 339LBA025M2EG specifies MSL 1 (Unlimited), while the substitute parts list MSL as Not Applicable. This does not affect compatibility in standard applications.

Q: Which substitute should be selected for maximum inventory availability?

A: The LLS1E333MELC (Nichicon) has the largest inventory availability at 273,882 units in stock, followed by SLPX333M025H4P3 (5,561 units). The 339LBA025M2EG main part has 693 units available.