RNU1A122MDN1

The RNU1A122MDN1 from Nichicon is a conductive polymer aluminum solid electrolytic capacitor in the RNU series, supplied in a radial-lead can. It delivers high capacitance (1.2 mF) and low ESR in a compact φ10×12.5 mm package for general-purpose power applications.

Key value comes from low equivalent series resistance (9 mΩ at 100 kHz), high ripple-current capability (620 mA at 120 Hz; 6.2 A at 300 kHz), and a wide operating temperature range (−55°C to 105°C) with a rated life of 2000 hours at 105°C.

Key Features

• Capacitance & Voltage — 1.2 mF (1200 µF) nominal capacitance with a rated voltage of 10 V and tolerance of −20% to +20%.
• Low ESR and High Ripple Capability — ESR of 9 mΩ measured at 20°C/100 kHz; rated ripple current of 620 mA at 120 Hz and 6.2 A at 300 kHz, supporting demanding AC stress.
• Conductive Polymer Construction — Solid electrolyte design providing the low-loss characteristics specified (tan δ = 0.08 under measurement conditions of 20°C, 120 Hz, 10 V).
• Thermal and Endurance Specification — Operating temperature range −55°C to 105°C and rated life/endurance of 2000 hours at 105°C.
• Radial-Lead, Compact Package — φ10×12.5 mm can with 5 mm lead spacing (±0.5 mm), supplied in bulk or bag packing for through-hole assembly.
• Leakage Current — Specified leakage current of 2400 µA (measured after 2 minutes at 20°C under rated voltage conditions).
• RoHS Compliant — Compliant with RoHS requirements as specified in the product data.

Typical Applications

• Power-supply decoupling — Bulk decoupling where 1.2 mF capacitance and low ESR help stabilize voltage rails under dynamic load.
• DC–DC converter output filtering — Low ESR and high ripple-current rating support output filtering in compact power modules.
• Embedded and industrial electronics — Compact radial lead form and −55°C to 105°C range suit general-purpose embedded and industrial boards requiring durable energy storage.

Unique Advantages

• High capacitance in a small footprint — 1.2 mF in a φ10×12.5 mm can saves board area while providing significant bulk capacitance.
• Low-loss polymer electrolyte — Tangent of loss angle of 0.08 (measured at 20°C, 120 Hz) combined with 9 mΩ ESR supports efficient high-frequency operation.
• High ripple current handling — Rated for 6.2 A at 300 kHz, enabling reliable filtering under high-frequency ripple conditions.
• Wide temperature and proven endurance — −55°C to 105°C operating range and 2000-hour life at 105°C provide predictable performance in thermally demanding environments.
• Through-hole compatibility — Radial-lead package with 5 mm lead spacing simplifies integration into legacy and serviceable assemblies.
• Supply readiness — Product is in mass production, available in bulk or bag packing for production volumes.

Why Choose RNU1A122MDN1?

The RNU1A122MDN1 combines conductive-polymer aluminum construction with a compact radial-lead package to deliver high capacitance, low ESR (9 mΩ at 100 kHz), and strong ripple-current capability (up to 6.2 A at 300 kHz). Its −55°C to 105°C range and 2000-hour rating at 105°C make it suitable for designs that require robust, long-life power decoupling and output filtering in a through-hole format.

This part is well suited for engineers and procurement teams designing general-purpose power systems and embedded electronics where measurable electrical performance, compact size, and RoHS compliance are required.

If you need pricing, lead-time details, or samples for evaluation, request a quote or submit an inquiry to our sales team to discuss availability and ordering options for RNU1A122MDN1.