UPJ2A391MHD6

The UPJ2A391MHD6 is a Nichicon UPJ series miniature, high-reliability aluminum electrolytic capacitor in a radial‑lead can. It delivers 390 μF capacitance at a 100 V rating in a compact φ18 × 30.5 mm package with 7.5 mm lead spacing.

Designed for demanding power applications, this UPJ part offers low impedance characteristics aimed at switching power supplies, extended high‑temperature endurance, and robust ripple handling to support reliable power filtering and energy buffering.

Key Features

• Capacitance & Voltage — 390 μF nominal capacitance with a 100 V rated voltage and ±20% tolerance, suitable for medium‑voltage power filtering tasks.
• Low Impedance (UPJ Series) — Part of Nichicon's UPJ low‑impedance series, intended for switching power supply applications where reduced impedance improves transient and ripple performance.
• High Ripple Handling — Low‑frequency ripple current of 744 mA at 120 Hz and high‑frequency ripple current of 1.24 A at 200 kHz, enabling effective AC ripple absorption across a range of operating frequencies.
• High‑Temperature Endurance — Rated for 5,000 hours at +105°C, supporting long life under elevated operating temperatures (specified endurance for applicable case sizes).
• Thermal Range — Operating temperature range from −55°C to +105°C for broad environmental compatibility.
• Electrical Characteristics — Tangent of loss angle (tan δ) of 0.08 measured at 20°C, 120 Hz; leakage current listed as 1,170 μA.
• Package & Mounting — Radial lead can (φ18 × 30.5 mm) with 7.5 mm lead spacing and standard axial lead tolerances for through‑hole PCBs; available in bulk or bag packing.
• Compliance — RoHS‑compliant construction.

Typical Applications

• Switching Power Supplies — Low impedance and targeted ripple handling make this part suitable for input/output filtering and stabilization in switching regulators.
• Power Conversion Modules — Useful for DC link/bulk capacitance where 100 V rating and high ripple capability are required.
• General Purpose Power Filtering — Fits general purpose power applications that demand high‑temperature endurance and reliable capacitance under load.

Unique Advantages

• Extended High‑Temperature Life: 5,000 hours at +105°C provides designers with a clear endurance specification for thermal budgeting and lifetime estimates.
• Frequency‑Range Ripple Support: Specified ripple current values at both 120 Hz and 200 kHz let engineers evaluate performance across low and high switching frequencies.
• Compact Radial Package: φ18 × 30.5 mm can with 7.5 mm lead spacing offers a balance of capacitance and board space for through‑hole assemblies.
• Predictable Electrical Losses: tan δ = 0.08 (20°C, 120 Hz) provides a measured dissipation factor for thermal and AC loss calculations.
• Manufacturer Backing: Part of Nichicon’s UPJ series with documented characteristics for reliable BOM selection and design verification.
• RoHS Compliant: Meets environmental directive requirements for lead‑free applications.

Why Choose UPJ2A391MHD6?

UPJ2A391MHD6 positions itself as a reliable, compact aluminum electrolytic solution for designers who need a 100 V, 390 μF radial‑lead capacitor with defined high‑temperature life and multi‑frequency ripple performance. Its low‑impedance UPJ series characteristics and measured tan δ and leakage values allow straightforward thermal and electrical integration into power supply and conversion designs.

This part is well suited for engineers specifying components for switching power supplies and general purpose power filtering where endurance, ripple handling, and a clear datasheet pedigree from Nichicon are required. Mass‑production status supports consistent sourcing for volume designs.

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