339LMB025M2EH Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 339LMB025M2EH is a 33000 µF, 25 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LMB series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high capacitance values at moderate voltage ratings. The part maintains Active product status with 1172 units currently in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, ensuring functional compatibility in target applications without design modification.

Substiute Parts

339LMB025M2EH

Cornell Dubilier / Illinois CapacitorIn Stock: 1234339LMB025M2EH Datasheet

Current PartRFQ

LGU1E333MELC

NichiconIn Stock: 274076LGU1E333MELC Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 339LMB025M2EH is determined by strict alignment of the following critical parameters:

Electrical Parameters:

• Capacitance value: 33000 µF (exact match required)
• Voltage rating: 25 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime specification: 3000 Hrs @ 105°C (exact match required)
• Operating temperature range: -40°C ~ 105°C (exact match required)
• Polarization: Polar (exact match required)

Mechanical Parameters:

• Package type: Radial, Can - Snap-In (exact match required)
• Lead spacing: 0.394" (10.00mm) (exact match required)
• Diameter: 1.378" (35.00mm) (exact match required)
• Height - Seated (Max): 2.047" (52.00mm) (exact match required)
• Mounting type: Through Hole (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (exact match required)

The LGU1E333MELC manufactured by Nichicon meets all critical electrical and mechanical parameters, qualifying it as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The LGU1E333MELC qualifies as a direct parametric equivalent to the 339LMB025M2EH based on alignment of all critical electrical, mechanical, and compliance specifications. Both parts are Active products with ROHS3 compliance and REACH unaffected status.

Selection between these parts should be based on:

Availability: The LGU1E333MELC maintains significantly higher inventory (273,982 units) compared to the 339LMB025M2EH (1,172 units), making it suitable for applications requiring extended lead times or volume procurement.

Compliance Certification: Both parts meet identical regulatory requirements (ROHS3, REACH unaffected, EAR99 ECCN classification, HTSUS 8532.22.0040).

Performance Characteristics: Ripple current specifications at 120 Hz are functionally equivalent (5.47 A vs. 5.5 A). ESR data is provided for the Cornell Dubilier part but not specified for the Nichicon equivalent; this does not affect substitution eligibility when all other parameters align.

Frequently Asked Questions (FAQ)

Q: Can the LGU1E333MELC be used as a direct replacement for the 339LMB025M2EH in existing designs?

A: Yes. The LGU1E333MELC meets all critical electrical and mechanical parameters specified for the 339LMB025M2EH. No circuit redesign or PCB modification is required. Both parts are snap-in radial capacitors with identical lead spacing, diameter, height, and voltage/capacitance ratings.

Q: Are there any differences in operating temperature performance between these parts?

A: No. Both parts operate across the identical temperature range of -40°C to 105°C with a rated lifetime of 3000 hours at 105°C.

Q: What is the significance of the ±20% tolerance specification?

A: The ±20% tolerance indicates that the actual capacitance value may vary between 26,400 µF and 39,600 µF. Both the 339LMB025M2EH and LGU1E333MELC share this tolerance specification, ensuring equivalent performance in applications where this tolerance band is acceptable.

Q: Why is ESR data missing for the LGU1E333MELC?

A: ESR (Equivalent Series Resistance) specifications are manufacturer-dependent and not universally provided across all product lines. The absence of this specification does not affect substitution eligibility when all other electrical and mechanical parameters align. Contact the manufacturer for detailed ESR characteristics if required for specific circuit analysis.

Q: Are both parts suitable for high-ripple-current applications?

A: Both parts support ripple current specifications at 120 Hz (5.47 A and 5.5 A respectively) and higher frequencies. The LGU1E333MELC specifies 6.325 A @ 50 kHz, while the 339LMB025M2EH specifies 6.8375 A @ 10 kHz. These values are comparable and suitable for general-purpose applications within their rated specifications.

Q: What is the difference between the LMB and LGU series designations?

A: LMB and LGU are manufacturer series identifiers for Cornell Dubilier and Nichicon respectively. Series designation does not affect electrical or mechanical compatibility when all parametric specifications align.

Q: Can these capacitors be used in surface-mount applications?

A: No. Both the 339LMB025M2EH and LGU1E333MELC are through-hole mounted radial, can-style snap-in capacitors. They are not suitable for surface-mount assembly processes.