LNT1H333MSEN

The LNT1H333MSEN is a screw-terminal aluminum electrolytic capacitor from Nichicon’s LNT series. It is a polarized, high-ripple-current capacitor specified for operation up to +105°C and designed for general-purpose power applications that require robust bulk capacitance and secure high-current connections.

As part of the LNT family, the series offers an extended rated voltage range across products; this specific part is rated 33 mF at 50 V and provides a combination of high ripple handling and elevated temperature endurance suitable for demanding power assemblies.

Key Features

• Capacitance & Voltage: 33 mF nominal capacitance with a 50 V rated voltage and ±20% tolerance, offering substantial bulk energy storage for power smoothing and decoupling.
• High ripple-current capability: Rated ripple current of 8 A at 120 Hz and 9.2 A at 100 kHz, enabling effective handling of AC ripple in power supplies and converters.
• Elevated operating temperature: Specified for −40°C to +105°C operation, supporting applications that require higher thermal endurance.
• Endurance at high temperature: Series endurance is defined as 5,000 hours at +105°C; for products in the 10 V to 250 V range (including this 50 V part) the rated load-life is 2,000 hours when subjected to rated ripple current at +105°C.
• Screw terminal package: Radial can with screw terminals for secure, low-impedance high-current connections and straightforward mechanical mounting.
• Polarized design: Standard polarized electrolytic construction suitable for DC bulk storage and smoothing roles.
• RoHS compliance: Compliant with the RoHS directive (2011/65/EU, (EU)2015/863).
• Physical size: Body dimensions approximately L: 12 cm × D: 5.1 cm and maximum seated height 4.724 inches, facilitating planning for mechanical integration.

Typical Applications

• Power supply bulk smoothing: Use as main reservoir capacitance for DC power supplies where high bulk capacitance and elevated ripple handling are required.
• DC link and converter stages: Suitable for DC-link and intermediate bus filtering in power conversion stages that impose substantial ripple currents.
• Industrial power assemblies: Robust screw-terminal mounting and high-temperature endurance make it appropriate for industrial power and control modules requiring secure high-current terminations.

Unique Advantages

• High ripple-current ratings: Explicit ripple limits at both low and high frequencies (8 A at 120 Hz, 9.2 A at 100 kHz) help designers size capacitors to handle real-world converter and supply ripple without guesswork.
• Designed for +105°C operation: Rated for continuous operation up to +105°C, with specified endurance characteristics at that temperature, supporting longer service life in hotter environments.
• Screw-terminal reliability: Screw terminals provide secure electrical and mechanical connections for high-current paths and simplify field installation or replacement.
• Series voltage flexibility: The LNT series spans a wide voltage range (10 V to 500 V), enabling consistent selection across different system voltage levels while retaining the same screw-terminal form factor.
• RoHS-compliant construction: Conforms to current RoHS requirements, simplifying compliance for assemblies targeting regulated markets.

Why Choose LNT1H333MSEN?

LNT1H333MSEN combines large capacitance and a 50 V rating with screw-terminal connectivity and high ripple current capability, making it well suited for engineers designing power supplies, DC-link stages, and rugged industrial power modules. Its rated operation to +105°C and defined load-life at rated ripple current provide predictable in-application endurance for thermal and ripple stress.

This part is a practical choice for designs that require reliable bulk energy storage and secure, low-impedance terminations while maintaining compliance with RoHS directives. The series-wide voltage coverage and defined mechanical mounting options support consistent parts selection across different power levels and form factors.

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