UPJ1E121MED

The UPJ1E121MED is a radial‑lead, polarized aluminum electrolytic capacitor from Nichicon’s UPJ series, engineered for low‑impedance power applications. With a rated capacitance of 120 µF at 25 V and a compact Ø6.3 × 15 mm can, it targets space‑constrained power circuits requiring reliable smoothing and decoupling.

Designed as a high‑reliability type within the UPJ lineup, this part combines specified endurance and measurable electrical characteristics—making it suitable for switching power supplies and general purpose power filtering in consumer and industrial electronics.

Key Features

• Electrical capacity — 120 µF nominal capacitance with a tolerance of −20% to +20% (measured at 120 Hz, 20°C), providing predictable charge storage for power rails.
• Rated voltage — 25 V DC rating for mid‑voltage power applications.
• Low dissipation factor — tanδ (DF) of 0.14 measured at 20°C, 120 Hz, supporting efficient energy handling with reduced internal loss.
• Ripple current capability — Low‑frequency ripple current 145.8 mA (120 Hz) and high‑frequency ripple current 275 mA (200 kHz) to handle both mains‑frequency and switching noise components.
• Leakage current — Specified leakage current of 90 µA, aiding predictable quiescent behavior in bias circuits.
• High temperature endurance — Rated for operation from −55°C to +105°C with an endurance rating of 2000 hours at 105°C, supporting elevated‑temperature environments.
• Compact radial package — Ø6.3 × 15 mm can with 2.5 mm lead spacing (±0.5 mm tolerance) and radial lead mounting for through‑hole assemblies.
• RoHS compliant — Meets environmental directive requirements for lead‑free manufacturing and assembly.
• Packaging options — Available in bulk (no terminal forming) and bag packing for flexible procurement and assembly workflows.

Typical Applications

• Switching power supplies — Low‑impedance design within the UPJ series makes this capacitor suitable for output filtering and smoothing in switch‑mode power supplies.
• General power decoupling — 120 µF capacitance with specified ripple ratings helps stabilize DC rails and reduce voltage ripple in power distribution networks.
• Space‑constrained modules — Compact Ø6.3 × 15 mm footprint and radial lead form factor fit tightly packed power assemblies and board layouts.
• Industrial and consumer electronics — Temperature range and endurance support use in a variety of control, instrumentation, and consumer power circuits requiring reliable electrolytic capacitance.

Unique Advantages

• Low‑impedance UPJ series architecture — Series design emphasis on low impedance supports effective noise suppression in switching environments.
• Balanced ripple handling — Specified ripple currents at both low and high frequencies enable handling of mains‑frequency ripple and high‑frequency switching components.
• Predictable thermal performance — Rated for −55°C to +105°C with defined 2000 h endurance at 105°C, allowing design margin for elevated operating temperatures.
• Compact through‑hole integration — Small can diameter and standard radial lead spacing simplify retrofits and new through‑hole assemblies without large board real estate.
• Clear electrical specifications — Defined tanδ, leakage current, and tolerance figures permit accurate modelling in power‑supply designs and simulation flows.
• RoHS compliance — Conforms to environmental requirements for modern manufacturing processes.

Why Choose UPJ1E121MED?

UPJ1E121MED offers a concise combination of capacitance, voltage rating, and measurable electrical performance in a compact radial aluminum electrolytic package. Its low dissipation factor, specified leakage current, and ripple current ratings provide designers with quantifiable parameters for smoothing and decoupling in switching and general‑purpose power circuits.

This part is suited to engineers and procurement teams working on space‑limited power modules and board‑level power systems that require a reliable, RoHS‑compliant electrolytic solution with defined high‑temperature endurance and proven UPJ series low‑impedance characteristics.

Request a quote or contact sales to discuss availability, lead times, and packaging options for UPJ1E121MED.