UPM1H391MHD

The UPM1H391MHD is a radial-lead aluminum electrolytic capacitor offering 390 µF capacitance at a 50 V rating. Designed for durable, low-impedance power conditioning, it combines high ripple handling and long endurance for demanding electronics environments.

Targeted at automotive and other high-reliability markets, the part provides a compact φ12.5 × 25 mm can, AEC-Q200 qualification, RoHS compliance and a wide operating temperature range of -55 °C to +105 °C.

Key Features

• Capacitance & Tolerance: 390 µF nominal with a tolerance of -20% to +20% (measured at 120 Hz, 20 °C).
• Rated Voltage: 50 V working voltage suitable for mid-voltage onboard and industrial power rails.
• Low Impedance: Specified impedance of 48 mΩ for improved transient response and reduced voltage ripple under load.
• High Ripple Current Capability: 672 mA at 120 Hz (low frequency) and 1.12 A at 200 kHz (high frequency) to support switching supplies and PWM-driven loads.
• Endurance & Temperature Range: Qualified for 5000 hours at +105 °C and rated for operation from -55 °C to +105 °C.
• Loss Characteristics: Dissipation factor (tanδ) 0.1 measured at 20 °C, 120 Hz.
• Leakage Current: Leakage current specified at 585 µA after rated voltage application.
• Package & Mounting: Radial lead, can package with φ12.5 mm diameter and 25 mm length; lead spacing 5.0 mm for through-hole assembly.
• Compliance & Qualification: AEC-Q200 qualification and RoHS compliant for regulated markets and long-life applications.

Typical Applications

• Automotive electronic modules — energy storage and smoothing for in-vehicle power supplies and control units where AEC-Q200 qualification and 105 °C endurance are required.
• Power supply filtering — bulk smoothing and ripple attenuation in DC-DC converters and linear regulators using the capacitor’s high ripple current capability and low impedance.
• Pulse and switching circuits — handling high-frequency ripple and transient currents in PWM-driven power stages, supported by the 1.12 A ripple rating at 200 kHz.

Unique Advantages

• AEC-Q200 Qualified: Delivers an industry-recognized reliability level for automotive-grade designs and other high-reliability applications.
• Long High-Temperature Life: Rated for 5000 hours at +105 °C, enabling stable performance in elevated-temperature environments.
• High Ripple Handling: Dual-frequency ripple ratings (672 mA at 120 Hz, 1.12 A at 200 kHz) provide versatility across low- and high-frequency power systems.
• Low Impedance Performance: 48 mΩ impedance helps reduce voltage drop and improve transient response, allowing more compact filtering designs.
• Compact Radial Package: φ12.5 × 25 mm can with 5 mm lead spacing supports through-hole assembly while minimizing board area.
• Regulatory and Environmental Compliance: RoHS compliant for use in regulated supply chains.

Why Choose UPM1H391MHD?

UPM1H391MHD positions itself as a robust, high-reliability electrolytic capacitor for designers who need proven endurance, low impedance and strong ripple-handling in a compact radial-can package. With AEC-Q200 qualification and a 5000-hour life at 105 °C, it is suitable for applications where sustained thermal and electrical stress are expected.

This capacitor is ideal for engineers specifying components for automotive electronics, power conditioning in harsh environments, and switching power stages that benefit from high-frequency ripple performance and low ESR. Its combination of measurable performance attributes supports predictable system behavior and long-term product reliability.

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