UPW1J391MHD

The UPW1J391MHD is a radial-lead aluminum electrolytic capacitor in Nichicon's UPW series, designed for miniature, low-impedance, high-reliability power applications. It provides 390 µF nominal capacitance at a 63 V rating with a compact φ12.5 × 25 mm can size and radial lead termination.

Engineered for switching power supplies and automotive electronics, this part combines low impedance, high ripple-handling capability, and long endurance for demanding thermal and electrical conditions.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a 63 V rated voltage and tolerance of −20% to +20%.
• Low Loss (tan δ) — tanδ 0.09 measured at 20°C, 120 Hz, supporting stable performance in AC ripple environments.
• Low Impedance — Rated impedance of 140 mΩ for reduced voltage ripple and improved regulation in power stages.
• High Ripple Current Capability — Low-frequency ripple current 1.29 A (120 Hz) and high-frequency ripple current 1.72 A (10 kHz), enabling effective smoothing in switching supplies.
• Long Endurance — Lifetime/endurance rated at 7000 hours at 105°C for extended service in elevated-temperature applications.
• Wide Temperature Range — Operating range from −55°C to +105°C to accommodate harsh thermal environments.
• Package & Mounting — Radial lead, can-style package with φ12.5 × 25 mm dimensions, lead spacing 5 mm (±0.5 mm), available in bulk or bag packing (no terminal forming).
• Leakage Current — Specified leakage current of 737.1 µA under the stated test conditions.
• Automotive-Grade Rating — Rated to AEC‑Q200 for use in automotive applications where that qualification is required.

Typical Applications

• Switching Power Supplies — Low impedance and high ripple current ratings make this capacitor suitable for smoothing and output filtering in switching regulators.
• Automotive Electronics — AEC‑Q200 rating and wide temperature range support use in automotive control modules and electronic subsystems.
• Compact Power Modules — Miniature φ12.5 × 25 mm can size and radial-lead format fit space-constrained power designs requiring reliable bulk capacitance.

Unique Advantages

• Measurable Low Impedance — 140 mΩ impedance reduces ripple voltage and improves transient response in power rails.
• High Ripple Endurance — Specified LF and HF ripple currents (1.29 A at 120 Hz, 1.72 A at 10 kHz) support effective AC ripple handling across frequency ranges common in switching systems.
• Long-Term Thermal Reliability — 7000 hours endurance at 105°C provides predictable life for designs exposed to sustained high temperatures.
• Automotive Qualification — AEC‑Q200 rating denotes suitability for automotive-grade applications requiring that qualification.
• Compact Radial Form Factor — φ12.5 × 25 mm can and 5 mm lead spacing enable dense PCB layouts and straightforward through-hole assembly.
• Defined Electrical Characteristics — Specified tanδ, leakage current, and tolerance permit accurate design calculations for filtering and energy-storage functions.

Why Choose UPW1J391MHD?

UPW1J391MHD positions itself as a compact, low-impedance aluminum electrolytic capacitor engineered for power-focused designs where ripple management, thermal endurance, and automotive qualification are important. Its combination of 390 µF at 63 V, defined loss angle, measurable impedance, and long 7000-hour endurance at 105°C make it well suited to switching power supplies, automotive control modules, and compact power assemblies.

Choose this part when your design demands predictable ripple performance, durable operation at elevated temperatures, and an AEC‑Q200-rated component in a radial-lead, can-style package backed by Nichicon’s UPW series specifications.

For pricing, availability, or to request a quote for UPW1J391MHD, please submit a quote request or contact sales with your project requirements and quantity needs.