RNU1C681MDN1

The RNU1C681MDN1 is a Nichicon RNU series conductive polymer aluminum solid electrolytic capacitor in a radial‑lead can. It delivers high capacitance (680 µF) in a compact φ10 × 12.5 mm package with a 16 V rated voltage and polarized radial leads.

Designed for general‑purpose electronic use, the device combines low ESR and high ripple current capability with a wide operating temperature range (−55°C to 105°C) and a rated load life of 2000 hours at 105°C, making it suitable where compact bulk capacitance and robust ripple handling are required.

Key Features

• Dielectric / Core — Conductive polymer aluminum solid electrolytic (FPCAP) construction for stable capacitance and low loss.
• Capacitance & Tolerance — 680 µF with a tolerance of −20% to +20% (measured at 120 Hz, 20°C).
• Rated Voltage — 16 V DC nominal rating for common low‑voltage power rails.
• Low ESR — ESR of 10 mΩ measured at 20°C / 100 kHz, minimizing series loss and heating under ripple conditions.
• High Ripple Current — Rated ripple current: 610 mA at 120 Hz and 6.1 A at 300 kHz (frequency coefficient table in datasheet: 0.10 @120 Hz, 0.45 @1 kHz, 0.50 @10 kHz, 1.00 @100 kHz/300 kHz).
• Reliability — Load life rating of 2000 hours at 105°C under rated voltage with specified limits for capacitance change, tan δ and ESR.
• Temperature Range — −55°C to +105°C operating range for broad environmental tolerance.
• Package & Mounting — Radial‑lead can (φ10 × 12.5 mm), lead spacing 5.0 mm (±0.5 mm); available in bulk or bag packing.
• Regulatory — RoHS compliant.

Typical Applications

• General‑purpose power rails — Compact bulk capacitance for low‑voltage DC rails where high ripple currents and low ESR are needed.
• Switching power supplies and converters — Supports high ripple current at high frequency (6.1 A at 300 kHz) to reduce voltage ripple on DC outputs.
• Embedded and industrial electronics — Small radial can suited to board‑level decoupling and energy storage in space‑constrained designs across −55°C to 105°C.

Unique Advantages

• Low conduction loss: 10 mΩ ESR (20°C/100 kHz) reduces I²R heating and improves efficiency under heavy ripple.
• Strong high‑frequency performance: Rated ripple current up to 6.1 A at 300 kHz and frequency coefficients provided for accurate ripple derating.
• High volumetric capacitance: 680 µF in a φ10 × 12.5 mm radial can delivers significant charge storage in a compact footprint.
• Wide operating range: −55°C to 105°C operation and 2000 h endurance at 105°C provide predictable behavior in demanding thermal environments.
• Production readiness: Mass production status and standardized radial package simplify sourcing and assembly.
• RoHS compliance: Meets RoHS requirements for regulatory compatibility in many electronic products.

Why Choose RNU1C681MDN1?

The RNU1C681MDN1 positions itself as a reliable, compact solution for designers needing substantial bulk capacitance with low ESR and robust ripple handling in a radial‑lead form. Its conductive polymer construction and measured performance (10 mΩ ESR, 6.1 A ripple at 300 kHz, 2000 h life at 105°C) make it well suited to circuits where efficiency, thermal endurance and compact size are critical.

This part is appropriate for engineers and procurement teams developing general‑purpose power and embedded systems that require predictable long‑term performance, straightforward radial mounting, and RoHS‑compliant components from a mass‑production supplier.

Request a quote or contact sales to discuss pricing, availability and lead times for RNU1C681MDN1.