UPJ1C391MPD6

The UPJ1C391MPD6 is a miniature, radial-lead aluminum electrolytic capacitor from Nichicon's UPJ series. It is a polarized, low-impedance unit rated 16 V with 390 µF capacitance and ±20% tolerance, designed for general-purpose power filtering and switching power supply applications. The part combines compact dimensions with measured ripple-current capability and extended endurance for sustained operation at elevated temperatures.

Key Features

• Electrical Performance — 390 µF capacitance at 16 V with ±20% tolerance, and a tanδ (loss tangent) of 0.16 measured at 20°C, 120 Hz for stable AC behaviour.
• Low Impedance for Power Conversion — Series-level design targeted for switching power supplies, providing reduced impedance suited to smoothing and decoupling on power rails.
• Ripple Current Ratings — Low-frequency ripple current 342 mA (120 Hz) and high-frequency ripple current 570 mA (200 kHz), enabling selection for both line-frequency and high-frequency power applications.
• Leakage Current — Specified leakage current of 187.2 µA, meeting typical requirements for power-rail decoupling and hold-up functions.
• Thermal Endurance — Rated for operation from −55°C to +105°C with a load-life endurance of 5000 hours at 105°C (φ10 case), supporting prolonged duty in thermally demanding environments.
• Compact Radial Package — φ10 × 16 mm can with radial leads, 5.0 mm lead spacing (±0.5 mm), suitable for through-hole assemblies where board space is constrained.
• Compliance & Availability — RoHS compliant and listed as in mass production; available in bulk or bag packing (no terminal forming).

Typical Applications

• Switching Power Supplies — Low-impedance UPJ design supports smoothing and decoupling on converter output and input stages.
• 16 V Power Rails — Direct use on 16 V rails for bulk filtering and hold-up in general-purpose electronics.
• Through-Hole Power Modules — Compact radial package and 5 mm lead spacing make it suitable for dense through-hole assemblies and retrofit designs.

Unique Advantages

• Measured Ripple Capability: Explicit low- and high-frequency ripple current ratings (342 mA @120 Hz, 570 mA @200 kHz) allow designers to size capacitors against both line- and switching-frequency stresses.
• Extended High-Temperature Life: 5000 hours endurance at 105°C for the φ10 case provides predictable long-term performance in elevated-temperature applications.
• Compact Footprint: φ10 × 16 mm can size with 5.0 mm lead spacing reduces board area while preserving capacitance needed for power filtering.
• Low Losses at Rated Voltage: tanδ of 0.16 at 16 V (20°C, 120 Hz) supports efficient operation with predictable AC loss characteristics.
• RoHS Compliant: Meets regulatory requirements for lead-free assemblies and environmentally conscious designs.
• Production Ready: Mass production status and standard radial-lead packaging options (bulk/bag) simplify procurement and assembly planning.

Why Choose UPJ1C391MPD6?

The UPJ1C391MPD6 positions itself as a reliable, compact choice for designers needing 390 µF of capacitance on a 16 V rail with verified ripple-current capability and extended high-temperature endurance. Its low-impedance UPJ series characteristics make it well suited to switching power supply filtering and general-purpose decoupling where stable performance at up to +105°C is required.

This part is ideal for engineers specifying through-hole capacitors for power modules, converters, and board-level bulk filtering who require clear, verifiable electrical and thermal ratings along with RoHS compliance and standard packaging options.

Request a quote or submit an RFQ to inquire about pricing, availability, and lead times for UPJ1C391MPD6.