LAKW6181MELB35ZB

The LAKW6181MELB35ZB is a Nichicon LAK series aluminum electrolytic capacitor in a radial, snap‑in can package. It is a polarized, snap‑in terminal type rated at 420 V and 180 µF, designed for general‑purpose use where elevated temperature endurance and abnormal voltage protection are required.

With a −25 °C to +105 °C operating range and specification for 2000 hours of endurance under rated ripple current at 105 °C, this capacitor is targeted at power electronics and equipment operating in environments with voltage fluctuations.

Key Features

• Capacitance & Voltage — 180 µF rated capacitance at 420 V, with a tolerance of ±20% (measured at 120 Hz, 20 °C).
• High‑temperature endurance — Endurance specified for 2000 hours with D.C. bias plus rated ripple current at 105 °C; performance criteria include capacitance within ±20% and leakage current at or below initial specified value after test.
• Snap‑in radial can package — Snap‑in mounting provides secure board retention for high‑current, high‑voltage assemblies; package dimensions: L: 3.5 × D: 3 cm and height seated max 1.378 inch are provided for mechanical planning.
• Ripple current capability — Rated ripple current of 900 mA at 120 Hz and 1.035 A at 10 kHz, suitable for smoothing and filtering under specified ripple conditions.
• Leakage and dissipation characteristics — Leakage current specified as I ≤ 3√(C·V) µA after 5 minutes at 20 °C; tangent of loss angle (tan δ) specified at 0.20 max (120 Hz, 20 °C).
• Safety and abnormal‑voltage handling — Improved safety features for abnormally excessive voltage and a pressure‑relief vent designed to operate without dangerous conditions such as flames or dispersion of parts.
• RoHS compliance — Conforms to RoHS directives (2011/65/EU, (EU)2015/863).

Typical Applications

• 420 V power systems — Bulk filtering and energy storage in high‑voltage DC link and power supply stages where a 420 V rating is required.
• Industrial equipment in fluctuating‑voltage environments — Smoothing and decoupling in machinery and systems exposed to voltage variation, leveraging the capacitor’s abnormal‑voltage safety features.
• General‑purpose power electronics — Use in general purpose circuits requiring polarized electrolytic capacitance with high temperature endurance and defined ripple handling.

Unique Advantages

• Designed for elevated operating temperature: 105 °C rating with a 2000‑hour endurance specification under rated ripple current gives clear, verifiable thermal performance expectations.
• High voltage capability: 420 V rated voltage supports designs that need extended voltage range options from the LAK series (200 V, 400 V, 420 V).
• Robust ripple handling: Explicit ripple current ratings at 120 Hz and 10 kHz enable accurate thermal and reliability planning for filtering and smoothing duties.
• Safety features for abnormal voltage: Improved protection against excessive voltage and a pressure‑relief vent designed to avoid dangerous outcomes improve system safety under fault conditions.
• Clear leakage and dissipation specs: Leakage current and tan δ limits are specified (I ≤ 3√CV µA; tan δ ≤ 0.20), simplifying electrical validation and acceptance testing.
• Snap‑in mounting for secure installation: Radial, snap‑in can package helps maintain mechanical stability in high‑vibration or high‑current assemblies.

Why Choose LAKW6181MELB35ZB?

LAKW6181MELB35ZB combines high voltage (420 V) and moderate capacitance (180 µF) in a snap‑in aluminum electrolytic designed for applications that demand verified high‑temperature endurance and controlled ripple performance. Its specified leakage, tan δ, and safety vent characteristics provide concrete data points for reliability assessments and thermal design.

This part is well suited for engineers and procurement teams specifying components for power supplies, industrial equipment, and other 420 V systems where durable, RoHS‑compliant electrolytic capacitors with abnormal‑voltage protections are required. The LAK series’ documented endurance and safety ratings help reduce uncertainty during qualification and lifecycle planning.

Request a quote or submit a product inquiry to receive pricing, lead‑time information, and support for integrating LAKW6181MELB35ZB into your design.