UPJ1C391MPD

The UPJ1C391MPD is a miniature, high-reliability aluminum electrolytic capacitor in a radial lead can, offering 390 µF capacitance at a 16 V rating. Designed for low impedance and long-life performance, it is suited to general-purpose power filtering and switching power supply applications that require compact energy storage and reliable ripple handling.

Key characteristics include a compact φ8×20 mm case, a wide operating temperature range of −55°C to +105°C, and a rated endurance of 3000 hours at 105°C for this case size.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance at a 16 V rated voltage with a tolerance of −20% to +20% for predictable bulk energy storage.
• Radial Lead Package — Compact φ8×20 mm can with 3.5 mm lead spacing (±0.5 mm) and radial lead mounting for through-hole PCB installations.
• Low Loss Characteristics — Dissipation factor (tan δ) specified at 0.16 measured at 20°C, 120 Hz for efficient AC performance.
• Ripple Current Handling — Supports 342 mA at 120 Hz (low frequency) and 570 mA at 200 kHz (high frequency) for effective smoothing under dynamic loads.
• Leakage Current — Leakage current specified at 187.2 µA, enabling predictable quiescent behavior in power circuits.
• High Temperature Endurance — Rated for 3000 hours at 105°C (φ8 case), providing long operational life in elevated temperature environments.
• Compliance — RoHS compliant, meeting current environmental directive requirements.
• Packaging Options — Available in bulk (no terminal forming) and bag packing to suit prototyping and production handling.

Typical Applications

• Switching Power Supplies — Low-impedance behavior and targeted ripple current handling make it suitable for output filtering and bulk decoupling in switching regulators.
• General-Purpose Power Filtering — Compact energy storage for smoothing and filtering in a variety of consumer and industrial power circuits.
• Low-Voltage DC Rails — Bulk decoupling and transient energy support on 16 V and lower DC power rails.

Unique Advantages

• High Capacitance in a Small Footprint — 390 µF in a φ8×20 mm can delivers substantial bulk capacitance where board space is limited.
• Designed for Ripple Performance — Separate low- and high-frequency ripple ratings (342 mA at 120 Hz and 570 mA at 200 kHz) let designers size capacitors based on expected operating conditions.
• Predictable Loss Characteristics — Specified tan δ (0.16 at 16 V, 120 Hz) supports thermal and AC performance modeling.
• Extended High-Temperature Life — 3000 hours at 105°C (for φ8 case) supports longer field life in warm operating environments.
• Through-Hole Mounting Simplicity — Radial lead format and standard 3.5 mm lead spacing simplify assembly and replacement in through-hole designs.
• Regulatory Compliance — RoHS compliance supports environmental requirements for many product lines.

Why Choose UPJ1C391MPD?

UPJ1C391MPD combines substantial capacitance, solid ripple handling, and a compact radial-lead package to address space-constrained power designs that require reliable bulk energy storage. Its −55°C to +105°C operating range and 3000-hour endurance at 105°C make it a practical choice for long-life applications operating across a wide temperature span.

This part is well suited to engineers and procurement teams specifying capacitors for switching power supplies and general-purpose power filtering where verified electrical characteristics, predictable leakage, and RoHS compliance are required.

If you would like pricing, lead-time information, or help specifying UPJ1C391MPD for your design, request a quote or submit an inquiry to our sales team and include your quantity and application details for a prompt response.