RHT1A391MDN1

The RHT1A391MDN1 is a radial-lead conductive polymer aluminum solid electrolytic capacitor designed for general-purpose electronic applications. It delivers 390 µF at 10 V in a compact φ8 × 11.5 mm can with low ESR and rated operation to 125°C for high-temperature endurance.

With specified low ESR, measurable high-frequency ripple capability and a 1000-hour load life at 125°C, this capacitor is suited where stable capacitance, ripple handling and thermal robustness are required within general-purpose circuits.

Key Features

• Capacitance and Tolerance — 390 µF nominal capacitance with tolerance of −20% to +20% at 20°C, 120 Hz.
• Rated Voltage — 10 V DC rated voltage with a surge rating to 11.5 V as specified in the RHT series.
• Low ESR — ESR of 16 mΩ measured at 20°C/100 kHz, supporting lower loss in high-frequency applications.
• Ripple Current Capability — Low-frequency ripple current of 126 mA at 120 Hz and high-frequency ripple current of 1.26 A at 300 kHz, with frequency coefficients documented across 120 Hz–300 kHz.
• High-Temperature Endurance — Load life of 1000 hours at 125°C (rated voltage), with defined end-of-life limits for capacitance, tan δ and ESR.
• Temperature Range — Operating from −55°C to +125°C for thermal flexibility in elevated-temperature environments.
• Electrical Loss — tan δ (DF) of 0.12 measured at 20°C, 120 Hz, supporting predictable dissipation behavior.
• Leakage Current — Specified leakage current of 780 µA (measured at 20°C after 2 minutes' application of rated voltage).
• Package & Mounting — Radial lead, polarized can (φ8 × 11.5 mm) with 3.5 mm lead spacing; available in bulk (no terminal forming) or bag packing for flexible assembly.
• Compliance — RoHS compliant.

Typical Applications

• General-purpose electronics — Provides capacitance, low ESR and ripple handling for general-purpose power filtering and decoupling in electronics where a 10 V, 390 µF capacitor is required.
• High-temperature circuits — Rated for operation to 125°C with a 1000-hour load life, suitable for designs that encounter elevated ambient temperatures.
• High-frequency power paths — Low ESR (16 mΩ at 100 kHz) and 1.26 A ripple capacity at 300 kHz support stability in high-frequency power-conditioning roles.

Unique Advantages

• High-temperature reliability: 1000-hour endurance at 125°C provides predictable lifetime performance under thermal stress.
• Low ESR for reduced loss: 16 mΩ ESR at 20°C/100 kHz minimizes conduction loss and improves efficiency in high-frequency applications.
• Strong ripple capability: Specified ripple current performance (126 mA at 120 Hz; 1.26 A at 300 kHz) supports both low- and high-frequency ripple environments.
• Compact radial package: φ8 × 11.5 mm can with 3.5 mm lead spacing delivers a high capacitance-to-volume ratio for space-constrained boards.
• Predictable electrical behavior: Specified tan δ (0.12 at 120 Hz, 20°C) and measured leakage current enable easier thermal and leakage budgeting in designs.
• Production-ready availability: Listed as mass production status and offered in bulk or bag packing to accommodate manufacturing needs.

Why Choose RHT1A391MDN1?

The RHT1A391MDN1 combines conductive-polymer aluminum chemistry with low ESR and documented high-frequency ripple capability, making it a reliable choice for general-purpose circuits that require stable capacitance and thermal endurance up to 125°C. Its compact radial can and defined electrical characteristics simplify selection for engineers balancing size, loss and lifetime.

Manufactured by Nichicon and available in mass production, the RHT1A391MDN1 is suitable for designs that prioritize predictable endurance, low-loss performance and RoHS compliance, offering long-term value through defined specifications and consistent supply options.

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