UPJ1H120MDD

The UPJ1H120MDD is a radial-lead aluminum electrolytic capacitor in Nichicon’s UPJ series designed for low-impedance power applications. It combines a 120µF capacitance with a 50V rating in a compact φ8 × 11.5mm can, delivering stable filtering and decoupling across a wide operating temperature range.

Engineered for general-purpose and switching power supply use, this device offers measurable benefits in ripple handling, low leakage, and temperature stability for compact electronic power systems.

Key Features

• Capacitance & Voltage — 120µF nominal capacitance with a 50V rated voltage and ±20% tolerance, suitable for bulk filtering and energy storage in power rails.
• Low Impedance Design — Series design emphasis on low impedance and a specified tanδ of 0.10, helping improve transient response and reduce AC loss at rated voltage.
• Ripple Current Handling — 31mA at 120Hz (low frequency) and 62mA at 200kHz (high frequency) ripple current ratings to support both line-frequency and high-frequency switching environments.
• Low Leakage — Specified leakage current of 18µA, minimizing standby losses and preserving charge over time.
• Thermal and Lifetime Performance — Rated to operate from −55°C to +105°C with a specified life of 2000 hours at 105°C, supporting sustained operation in elevated-temperature conditions.
• Package & Mounting — Radial lead, can-style package with 2mm lead spacing (φ8 × 11.5mm), suited to through-hole board layouts where compact footprint and robust leads are required.
• Regulatory — RoHS compliant.

Typical Applications

• Switching Power Supplies — Filtering and output smoothing for compact switch-mode power supplies where low impedance and ripple handling are important.
• Power Rail Decoupling — Bulk decoupling on DC power rails in general-purpose electronic and industrial equipment.
• Consumer and Industrial Electronics — Energy storage and smoothing in compact modules requiring a small can-style radial capacitor rated for elevated temperatures.

Unique Advantages

• Measurable ripple tolerance: Defined low- and high-frequency ripple current ratings (31mA @120Hz, 62mA @200kHz) provide predictable performance in both line- and switching-frequency environments.
• Stable AC performance: A tanδ of 0.10 at rated voltage reflects controlled loss characteristics for improved efficiency in AC and ripple conditions.
• Compact, serviceable package: φ8 × 11.5mm radial-can with 2mm lead spacing balances small PCB footprint with through-hole mechanical robustness.
• Wide temperature window: −55°C to +105°C operating range supports use across diverse environmental conditions and industrial contexts.
• Low leakage: 18µA leakage current reduces parasitic drain and helps maintain charge in standby or low-power modes.
• RoHS compliance: Aligns with environmental and regulatory requirements for lead-free assemblies.

Why Choose UPJ1H120MDD?

UPJ1H120MDD positions itself as a compact, low-impedance radial electrolytic designed for reliable power filtering in switching supplies and general-purpose electronics. With a 50V rating, defined ripple current specs at both low and high frequencies, and a controlled tanδ, it offers predictable electrical behavior for power designers focused on stability and efficiency.

This capacitor is appropriate for engineers specifying through-hole solutions where small size, temperature resilience (−55°C to +105°C), and controlled leakage are required. Its RoHS compliance and Nichicon UPJ series pedigree make it a practical choice for production designs that need consistent, verifiable capacitor performance.

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