UPM1K391MHD

The UPM1K391MHD is an aluminum electrolytic capacitor from Nichicon’s UPM series designed for low-impedance, high-reliability applications. It is a polarized, radial-lead device offering 390 µF capacitance at an 80 V rating in a compact φ12.5 × 40 mm can.

Designed for demanding environments, the part delivers specified ripple-current capability at both low and high frequencies and meets AEC‑Q200 qualification for automotive applications. Its operating range from −55 °C to 105 °C and 5,000‑hour endurance at 105 °C make it suitable for long-life power systems.

Key Features

• Capacitance and Voltage — 390 µF nominal capacitance rated for 80 V operation, ±20% tolerance at 120 Hz, 20 °C.
• Low Impedance — Specified impedance of 78 mΩ supports effective smoothing and decoupling in power circuits.
• Ripple Current Handling — Low-frequency ripple current 750 mA (120 Hz) and high-frequency ripple current 1.25 A (200 kHz) for mixed-frequency power environments.
• Reliability & Endurance — 5,000 hours rated life at 105 °C under specified load conditions and AEC‑Q200 qualification for automotive-grade reliability.
• Loss Characteristics — Dissipation factor (tan δ) 0.08 measured at 20 °C, 120 Hz, enabling predictable AC performance.
• Mechanical & Mounting — Radial lead, polarized can with 5 mm lead spacing (±0.5 mm) and size φ12.5 × 40 mm; available in bulk or bag packing.
• Leakage Current — Specified leakage current of 936 µA, supporting predictable standby and steady-state behavior.
• Environmental Compliance — RoHS compliant.

Typical Applications

• Automotive systems — Suitable for use in automotive power electronics where AEC‑Q200 qualification and extended temperature/hours endurance are required.
• Power supply filtering — Bulk smoothing and decoupling in DC power rails benefiting from the 390 µF capacitance and low impedance.
• High ripple‑current circuits — Circuits that present both low‑frequency and high‑frequency ripple, leveraging the specified ripple current ratings at 120 Hz and 200 kHz.

Unique Advantages

• AEC‑Q200 qualified: Provides a level of qualification suitable for automotive electronic designs requiring component-level assurance.
• Long high‑temperature endurance: 5,000 hours at 105 °C supports designs targeting long lifetime in elevated-temperature environments.
• Measured low impedance: 78 mΩ impedance delivers effective noise suppression and energy buffering with predictable performance.
• Dual-frequency ripple capability: Defined ripple current ratings at 120 Hz and 200 kHz allow designers to address mixed-frequency power disturbances.
• Compact radial can: φ12.5 × 40 mm form factor with 5 mm lead spacing simplifies through-hole mounting and replacement in existing designs.
• Regulatory compliance: RoHS compliance supports deployment in regions with RoHS requirements.

Why Choose UPM1K391MHD?

UPM1K391MHD targets engineers who need a robust, high-voltage electrolytic capacitor with defined ripple‑current performance and long high‑temperature endurance. Its combination of 390 µF at 80 V, low impedance, and AEC‑Q200 qualification makes it a practical choice for power filtering and energy‑buffering tasks in automotive and other demanding systems.

As a mass‑production Nichicon UPM series part, this capacitor offers verifiable electrical and mechanical specifications—helping reduce design risk and support consistent supply for production programs.

To request a quote or submit a sourcing inquiry for UPM1K391MHD, please contact our sales team with your quantity and delivery requirements and we will respond with pricing and availability.