LLS2C391MELZ Equivalent & Substitute Parts

Part Overview

The LLS2C391MELZ is a 390 µF, 160 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is classified as Active product status and is designed for general purpose applications requiring polarized capacitive energy storage. The LLS series offers a 3000-hour lifetime rating at 85°C operating temperature with operating range from -40°C to 85°C.

Equivalent and substitute parts are identified when design requirements permit tolerance in thermal performance, ripple current handling, or operational temperature range while maintaining core electrical specifications: 390 µF capacitance, ±20% tolerance, and 160 V rated voltage.

Substiute Parts

LLS2C391MELZ

NichiconIn Stock: 1098LLS2C391MELZ Datasheet

Current PartRFQ

LGU2C391MELZ

NichiconIn Stock: 1142LGU2C391MELZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LLS2C391MELZ is determined by the following core parameters:

• Capacitance value: 390 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage rating: 160 V (exact match required)
• Package type: Radial, Can - Snap-In (exact match required)
• Lead spacing: 0.394" (10.00 mm) (exact match required)
• Physical dimensions: 0.866" Dia × 0.984" Height (exact match required)
• Mounting type: Through Hole (exact match required)

The LGU2C391MELZ qualifies as a direct substitute based on matching all core electrical and mechanical parameters. Differences in thermal performance characteristics (lifetime rating temperature and operating temperature range) do not preclude substitution when application requirements permit operation within the substitute part's thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

Both LLS2C391MELZ and LGU2C391MELZ are Active product status components manufactured by Nichicon with ROHS3 compliance. Selection between these parts depends on application thermal requirements:

The LLS2C391MELZ is specified for applications operating within -40°C to 85°C with 3000-hour lifetime at 85°C. This part is suitable for standard industrial and consumer applications with moderate thermal stress.

The LGU2C391MELZ extends the operating temperature range to -40°C to 105°C with 3000-hour lifetime at 105°C. This part is suitable for applications requiring higher temperature operation or thermal margin. The LGU series exhibits lower ripple current ratings (1.3 A @ 120 Hz and 1.95 A @ 50 kHz) compared to the LLS series (1.63 A @ 120 Hz and 2.445 A @ 50 kHz), which may be a consideration in high-ripple-current applications.

Both parts maintain identical mechanical compatibility, electrical ratings, and regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can LGU2C391MELZ replace LLS2C391MELZ in all applications?

A: Substitution is valid when the application operating temperature does not exceed 85°C and ripple current requirements do not exceed LGU2C391MELZ specifications (1.3 A @ 120 Hz, 1.95 A @ 50 kHz). If the application requires operation above 85°C or higher ripple current handling, the LLS2C391MELZ is the appropriate choice.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts share identical lead spacing (0.394" / 10.00 mm), diameter (0.866" / 22.00 mm), and maximum seated height (0.984" / 25.00 mm). PCB layout and mechanical mounting are fully compatible.

Q: What is the difference between the LLS and LGU series?

A: The LLS series is rated for 3000-hour lifetime at 85°C with -40°C to 85°C operating range. The LGU series is rated for 3000-hour lifetime at 105°C with -40°C to 105°C operating range. Both series maintain identical capacitance, voltage, tolerance, and package specifications for the 390 µF 160 V snap-in configuration.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both LLS2C391MELZ and LGU2C391MELZ are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8532.22.0040.

Q: Which part should I select for a new design?

A: Selection is based on application thermal environment and ripple current requirements. For applications with moderate thermal stress and standard ripple current demands, either part is acceptable. For applications approaching 85°C or requiring extended thermal margin, the LGU2C391MELZ is preferred. For applications with high ripple current demands, the LLS2C391MELZ is preferred.