UPJ1V681MHD

The UPJ1V681MHD is a miniature, radial-lead aluminum electrolytic capacitor from Nichicon's UPJ series. It is a low-impedance, high-reliability type designed for general-purpose use and is specifically noted as ideally suited for switching power supplies.

With a rated capacitance of 680 µF at 35 V, long endurance at elevated temperature, and compact radial-can packaging, this part targets designs requiring robust power filtering and smoothing in constrained spaces.

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance with a rated voltage of 35 V and capacitance tolerance of -20% to +20%.
• Low Impedance Performance — Specified tangent of loss angle (tan δ) of 0.12 at 20°C, 120 Hz (35 V rating), supporting low-impedance behavior for power supply applications.
• Ripple Current Handling — Low-frequency ripple current of 931.6 mA (120 Hz) and high-frequency ripple current of 1.37 A (200 kHz), enabling effective AC ripple absorption across a range of switching frequencies.
• Leakage Current — Leakage current specified at 714 µA, measured after rated voltage application conditions as provided.
• Long Endurance — Rated for 5000 hours at 105°C (endurance specification from the UPJ series), supporting extended operation under elevated temperature and ripple stress.
• Wide Operating Temperature — Functional across -55°C to +105°C, accommodating demanding thermal environments.
• Compact Radial Package — φ12.5 × 25 mm can with radial leads, 5.0 mm lead spacing (±0.5 mm), suitable for through-hole mounting in compact layouts.
• Polarized, Radial-Lead Construction — Standard polarized electrolytic form factor for power rail decoupling and smoothing.
• Packaging & Availability — Available in bulk (no terminal forming) or bag packing; product status: mass production. RoHS compliant.

Typical Applications

• Switching Power Supplies — Low-impedance design and specified ripple ratings make this capacitor suitable for output smoothing and intermediate bus filtering in switching supplies.
• Power Supply Filtering — Use for bulk filtering and ripple reduction on DC power rails where a compact radial electrolytic is required.
• General-Purpose Power Electronics — Applicable in a variety of general-purpose power circuits requiring 680 µF at 35 V with long-life endurance.

Unique Advantages

• Low-Impedance Performance: Tangent of loss angle (tan δ) of 0.12 at 35 V (20°C, 120 Hz) supports reduced impedance in power-frequency regions.
• High Ripple Capability: Defined low- and high-frequency ripple currents (931.6 mA at 120 Hz, 1.37 A at 200 kHz) enable reliable performance across switching and line-frequency conditions.
• Extended High-Temperature Endurance: 5000 hours at 105°C provides predictable aging characteristics for designs exposed to elevated temperatures.
• Compact Through-Hole Form Factor: φ12.5 × 25 mm radial can with 5 mm lead spacing fits tight PCB footprints while retaining robust capacitance.
• Clear Leakage Specification: Leakage current specified at 714 µA for design verification and margin calculations.
• RoHS Compliant & Mass Production: Conforms to RoHS requirements and is available in production quantities with standard packaging options.

Why Choose UPJ1V681MHD?

The UPJ1V681MHD combines Nichicon's UPJ-series low-impedance design with a compact radial-can package and extended high-temperature endurance. It is positioned for engineers who need reliable bulk capacitance and effective ripple handling in switching power supplies and general-purpose power electronics.

Its defined electrical parameters—680 µF at 35 V, specified tan δ, ripple current ratings, leakage current, and a -55°C to +105°C operating range—make it straightforward to validate in designs where lifetime and predictable performance under ripple stress are key requirements.

Request a quote or submit an inquiry to our sales team to discuss availability, packaging options, and lead times for UPJ1V681MHD.