UPJ1H681MHD

The UPJ1H681MHD is an aluminum electrolytic capacitor in a radial-lead can optimized for low impedance and high-reliability applications. It is designed for use in switching power supplies and general-purpose power-filtering roles where sustained performance at elevated temperatures is required.

Key attributes include a 680 µF capacitance at 50 V, ±20% tolerance, operation across −55°C to +105°C, a specified 5 000 hour load life at 105°C, and RoHS compliance—making it suitable for demanding thermal and ripple-current environments.

Key Features

• Capacitance & Voltage  680 µF nominal capacitance rated at 50 V with a ±20% tolerance (measured at 120 Hz, 20°C).
• Low-Impedance Design  Series architecture optimized for low impedance performance, specifically indicated for switching power supplies.
• High-Temperature Endurance  Rated for operation from −55°C to +105°C with a 5 000 hour load-life specification at +105°C.
• Ripple Current Capability  Specified ripple current of 1.04 A at 120 Hz and 1.53 A at 200 kHz for effective smoothing of power rails across frequencies.
• Leakage and Dissipation  Leakage current limit follows the series specification (≤ 0.03CV µA after 1 minute at 20°C); tangent of loss angle (tan δ) for 50 V units is specified at 0.10 (max.).
• Radial Lead Package  Through-hole radial-lead can with 5 mm lead spacing and compact dimensions (L: 3.55 × D: 1.25 cm) for straightforward PCB mounting.
• Compliance  RoHS compliant as specified in the product data.

Typical Applications

• Switching Power Supplies  Low-impedance design and defined ripple-current ratings make this capacitor suitable for input/output smoothing and energy storage in switch-mode power supplies.
• General-Purpose Power Filtering  Provides bulk capacitance and ripple suppression in a variety of electronic power-system designs requiring axial/radial through-hole components.
• High-Temperature Electronics  The −55°C to +105°C operating range and extended load-life specification support use in assemblies exposed to elevated operating temperatures.

Unique Advantages

• Proven Load-Life Performance: The series specifies 5 000 hours at +105°C under rated conditions, providing a quantifiable endurance metric for thermal-stressed designs.
• Measured Ripple Capability: Explicit ripple-current ratings at 120 Hz and 200 kHz let designers size decoupling and smoothing networks with frequency-aware data.
• Low Impedance for Switching Applications: Series-level low-impedance construction reduces AC voltage drop and improves transient response in power converters.
• Wide Temperature Window: −55°C to +105°C operation supports a broad set of environmental conditions without sacrificing specified performance.
• RoHS Compliance: Meets RoHS directive requirements for environmentally conscious designs and global regulatory compatibility.
• PCB-Friendly Through-Hole Format: Radial leads with 5 mm spacing and a compact can footprint simplify assembly and mechanical support in through-hole layouts.

Why Choose UPJ1H681MHD?

UPJ1H681MHD combines substantial bulk capacitance (680 µF) with a low-impedance construction and defined ripple-current specifications to address the needs of switching power supplies and general-purpose power filtering. Its wide operating temperature range and long load-life rating at +105°C provide designers with verifiable endurance for thermal and ripple-stressed power electronics.

This part is appropriate for engineers and procurement teams specifying reliable, through-hole electrolytic capacitance where measurable endurance, frequency-aware ripple performance, and RoHS compliance are required.

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