RR70J391MDN1

The RR70J391MDN1 is a Nichicon RR7 series conductive polymer aluminum solid electrolytic capacitor in a radial‑lead can. It delivers 390 µF capacitance at a 6.3 V rating with a low ESR architecture designed for applications requiring high ripple handling and compact size.

Key attributes include ultra low ESR (7 mΩ at 20°C/100 kHz), high ripple current capability (560 mA at 120 Hz and 5.6 A at 300 kHz), and a rated endurance of 2000 hours at 105°C, making it suitable for robust general‑purpose electronic power applications.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with a rated voltage of 6.3 V and ±20% tolerance (120 Hz, 20°C).
• Ultra Low ESR — ESR specified at 7 mΩ (20°C/100 kHz), supporting improved high‑frequency performance and reduced AC loss.
• High Ripple Current — Rated ripple current of 560 mA at 120 Hz and 5.6 A at 300 kHz (frequency coefficients provided in the datasheet), enabling higher AC current handling in power rails.
• Thermal and Endurance Ratings — Operates from −55°C to 105°C with a life/endurance rating of 2000 hours at 105°C (rated voltage).
• Leakage and Loss — Leakage current specified at 245 µA (after 2 minutes at 20°C); tan δ (DF) 0.08 at 20°C/120 Hz for predictable loss behavior.
• Compact Radial Package — φ8 × 11.5 mm can with 3.5 mm lead spacing (lead spacing tolerance ±0.5 mm), radial lead mounting for through‑hole assemblies and bulk/bag packing options.
• RoHS Compliant — Conforms to RoHS requirements as stated in the product data.

Typical Applications

• General-purpose power filtering — Use for DC rail decoupling and bulk filtering in designs that benefit from low ESR and compact radial packaging.
• High-frequency switching supplies — Suitable for local energy buffering and ripple suppression where high ripple current at hundreds of kHz is present, supported by the specified 5.6 A ripple capability at 300 kHz.
• Embedded and board-level power modules — Fits compact through‑hole layouts (φ8×11.5 mm, 3.5 mm lead spacing) for power stabilization in general‑purpose electronics.

Unique Advantages

• Lower AC loss: The 7 mΩ ESR at 100 kHz minimizes resistive losses and helps maintain voltage stability under AC stress.
• High ripple tolerance: Specified ripple currents (560 mA at 120 Hz, 5.6 A at 300 kHz) enable reliable handling of both low‑ and high‑frequency ripple components.
• Wide temperature range: Rated for −55°C to 105°C to support a broad set of operating environments without derating signal performance.
• Proven endurance: 2000 hours at 105°C life rating provides quantifiable endurance for thermal stress and long‑term operation.
• Compact radial form factor: φ8×11.5 mm can and 3.5 mm lead spacing deliver a small footprint for space‑constrained through‑hole assemblies.
• Measurable leakage and dissipation: Leakage current (245 µA) and tan δ (0.08) are specified for predictable behavior in precision designs.

Why Choose RR70J391MDN1?

The RR70J391MDN1 offers a balanced combination of low ESR, high ripple current capability, compact radial packaging, and a defined endurance profile (2000 hours at 105°C). These characteristics make it well suited for general‑purpose power filtering and high‑frequency power circuits that require predictable electrical performance and thermal endurance.

Designers seeking a conductive polymer aluminum electrolytic solution for through‑hole assemblies will find the RR70J391MDN1 provides verified electrical specifications (ESR, ripple, leakage, tan δ) and RoHS compliance to support reliable integration into production designs.

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