UCPW6121MHD6

The UCPW6121MHD6 is a high-voltage, miniature aluminum electrolytic capacitor from Nichicon’s UCP series, configured as a radial-lead, polarized can. It provides 120 µF capacitance at a 420 V rating with a wide operating temperature range of −40°C to 105°C.

Designed for general-purpose applications that require long endurance and compact high-voltage energy storage, this component combines long life (10,000 hours at 105°C) with measurable ripple-handling capability and defined leakage and dissipation characteristics.

Key Features

• Electrical Rating — 120 µF capacitance rated at 420 V with tolerance of −20% to +20%.
• Long Endurance — Rated for 10,000 hours at 105°C under D.C. bias plus rated ripple current, with specified post-test limits for capacitance, tan δ and leakage current.
• Thermal Range — Operates from −40°C to 105°C, providing a wide ambient range for demanding environments.
• Ripple Performance — Low-frequency ripple current 800 mA (120 Hz) and high-frequency ripple current 1.2 A (10 kHz), with frequency coefficients defined in the datasheet.
• Dissipation Factor — tan δ (DF) of 0.24 measured at 20°C, 120 Hz (rated voltage 420 V).
• Leakage Current — Specified leakage current of 2,116 µA (measured after application of rated voltage at 20°C, per product data).
• Mechanical and Mounting — Radial lead can with case size φ18 × 31.5 mm and lead spacing 7.5 mm (lead spacing tolerance ±0.5 mm); packaged in bulk or bag for production handling.

Typical Applications

• General-Purpose Power Circuits — Provides compact high-voltage capacitance for energy storage and smoothing in general-purpose designs that require a 420 V rating.
• Industrial Equipment — Suited for equipment designs requiring extended endurance at elevated temperatures (10,000 h at 105°C) and defined leakage characteristics.
• High-Voltage Modules — Fits compact high-voltage modules where radial-lead mounting and a φ18 × 31.5 mm can form factor are preferred.

Unique Advantages

• High Voltage Capability: Rated 420 V to support higher-voltage system rails without stacking or complex topologies.
• Long-Term Reliability: 10,000-hour endurance at 105°C under rated conditions, enabling predictable aging and maintenance planning.
• Defined Ripple Handling: Specified ripple currents (800 mA @120 Hz, 1.2 A @10 kHz) with frequency coefficients for accurate thermal and ripple budgeting.
• Compact High-Voltage Package: φ18 × 31.5 mm can in a radial-lead format with 7.5 mm lead spacing for straightforward through-hole assembly.
• Measurable Electrochemical Characteristics: Specified tan δ (0.24) and quantified leakage current (2,116 µA) allow precise electrical modeling and validation.
• Production-Ready Packaging: Available in bulk or bag packing and listed as mass production status to support volume procurement and assembly workflows.

Why Choose UCPW6121MHD6?

The UCPW6121MHD6 positions itself as a compact, high-voltage aluminum electrolytic solution for engineers needing stable capacitance and long life under elevated-temperature conditions. Its 420 V rating, 120 µF capacitance, defined dissipation factor and leakage figures, and ripple-current specifications make it straightforward to specify into systems where predictable electrical behavior and endurance are priorities.

This part is well suited to designers and buyers working on general-purpose high-voltage circuits and industrial equipment who require a reliable, production-ready radial-lead capacitor with clear electrical and mechanical specifications from a recognized series.

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