RR70J681MDN1

The RR70J681MDN1 is a conductive polymer aluminum solid electrolytic capacitor in a radial lead can, designed for general-purpose power applications. It combines ultra low ESR construction with high ripple-current capability and a rated operating range of −55°C to +105°C.

Targeted use cases include compact power filtering and decoupling where low loss at high frequency, robust ripple handling, and long load life at elevated temperature are required.

Key Features

• Conductive polymer solid electrolyte — Provides low-loss, stable performance compared with conventional electrolytes.
• Ultra low ESR — ESR of 7 mΩ measured at 100 kHz and 20°C, minimizing voltage drop and power dissipation in high-frequency circuits.
• High ripple-current capability — Rated ripple current 610 mA at 120 Hz and 6.1 A at 300 kHz, supporting both low- and high-frequency switching environments.
• Load life and temperature range — Load life of 2000 hours at 105°C and operating temperature range −55°C to +105°C for sustained elevated-temperature performance.
• Radial lead package — Can-style radial lead mounting with 5 mm lead spacing and case size φD×L = 10×12.5 mm for through-hole assemblies.
• Electrical and tolerance specs — 680 µF rated capacitance at 6.3 V with ±20% tolerance and polarized construction for correct orientation in DC circuits.
• Leakage current — Specified leakage current of 428 µA (measured at 20°C after 2 minutes), enabling predictable quiescent behavior.
• Environmental and assembly — Compliant with RoHS (2011/65/EU, (EU)2015/863) and compatible with lead-free flow soldering conditions.
• Frequency response guidance — Frequency coefficients for rated ripple current: 0.10 at 120 Hz, 0.45 at 1 kHz, 0.50 at 10 kHz, 1.00 at 100 kHz and 300 kHz (use to scale ripple ratings by frequency).

Typical Applications

• Power supply output filtering — Low ESR and high ripple capability make the RR70J681MDN1 suitable for smoothing outputs of DC‑DC converters and switching supplies.
• Local decoupling for high-frequency switching — High-frequency ripple rating and low ESR help maintain stable voltage rails near switching MOSFETs and regulators.
• Bulk energy storage in compact assemblies — 680 µF capacitance in a small radial package supports compact board-level energy buffering where through-hole mounting is required.
• General-purpose consumer and industrial electronics — Designed for applications that require reliable electrolytic performance with RoHS compliance and lead-free assembly compatibility.

Unique Advantages

• Reduced conduction losses: 7 mΩ ESR at 100 kHz lowers I²R losses in high-current, high-frequency circuits.
• Handles significant ripple currents: 6.1 A capability at 300 kHz enables use directly on switching nodes and regulator outputs with substantial AC stress.
• Compact radial form factor: 10×12.5 mm case with 5 mm lead spacing fits tight through-hole layouts while providing substantial capacitance.
• High-temperature endurance: 2000 hours at 105°C supports longer life under sustained elevated temperatures compared with shorter-life alternatives.
• Predictable leakage and endurance: Specified leakage current and datasheet endurance limits provide clear margins for design validation.
• Compliance and assembly-ready: RoHS compliant and compatible with lead-free flow soldering conditions to meet regulatory and manufacturing needs.

Why Choose RR70J681MDN1?

RR70J681MDN1 delivers a balance of high capacitance, ultra low ESR, and substantial ripple-current capability in a compact radial-lead package from Nichicon’s RR7 series. Its conductive polymer construction and specified endurance at 105°C make it a practical option for designs that need reliable power filtering and bulk energy buffering in constrained through-hole assemblies.

Choose this part when your design requires measurable reductions in dissipation, predictable leakage behavior, and RoHS-compliant, lead-free assembly compatibility for long-term operation in general-purpose electronic equipment.

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