RHT1A331MDN1

The RHT1A331MDN1 is a conductive polymer aluminum solid electrolytic capacitor in a radial-lead can. It delivers 330 µF capacitance at a 10 V rating with polymer chemistry optimized for low ESR and high ripple-current performance.

Designed for general-purpose electronic designs that require elevated temperature endurance, the RHT1A331MDN1 supports continuous operation from −55 °C to 125 °C and a rated life of 1000 hours at 125 °C, providing a reliable solution for power filtering and decoupling in compact assemblies.

Key Features

• Capacitance & Tolerance — 330 µF nominal capacitance with ±20% tolerance at 120 Hz, 20 °C, suitable for bulk decoupling and energy storage in power rails.
• Rated Voltage — 10 V rated voltage with 11.5 V surge voltage capability as specified for the RHT series.
• Low ESR — 17 mΩ ESR measured at 20 °C / 100 kHz, enabling lower loss and improved voltage stability under AC conditions.
• High Ripple Current Handling — Supports 126 mA ripple current at 120 Hz (low frequency) and 1.26 A at 300 kHz (high frequency), allowing effective suppression of supply noise across a broad frequency range.
• High-Temperature Endurance — Rated lifetime of 1000 hours at 125 °C under rated voltage, with specified limits for capacitance change, tan δ, ESR and leakage after endurance testing.
• Package & Mounting — Radial lead / can package (φ8 × 11.5 mm) with 3.5 mm lead spacing (±0.5 mm), provided in bulk/bag packing and intended for through-hole assemblies.
• Leakage Current — 660 µA maximum leakage current after 2 minutes at 20 °C under rated voltage.
• Environmental Compliance — RoHS compliant per the RHT series declaration.

Typical Applications

• General-purpose power filtering — Bulk decoupling and smoothing on low-voltage power rails where low ESR and high ripple capability are required.
• High-temperature electronics — Power conditioning in assemblies exposed to elevated temperatures up to 125 °C and requiring 1000-hour endurance at that temperature.
• Compact through-hole assemblies — Radial-lead can for compact, serviceable designs that need robust decoupling in small footprint areas (φ8 × 11.5 mm).

Unique Advantages

• Quantified low-loss performance: 17 mΩ ESR at 100 kHz (20 °C) reduces AC losses and improves voltage stability under switching conditions.
• Broad ripple capability: Rated ripple currents of 126 mA (120 Hz) and 1.26 A (300 kHz) accommodate both low- and high-frequency ripple on power rails.
• High-temperature reliability: 1000 hours life at 125 °C supports designs requiring sustained operation at elevated temperatures.
• Compact radial package: φ8 × 11.5 mm can with 3.5 mm lead spacing provides a space-efficient through-hole solution for manual assembly and serviceability.
• Predictable leakage behavior: 660 µA maximum leakage current after voltage application gives clear limits for bias and standby current budgeting.
• Regulatory alignment: RoHS compliance simplifies selection for projects requiring lead-free directive adherence.

Why Choose RHT1A331MDN1?

The RHT1A331MDN1 pairs conductive polymer chemistry with a compact radial-can package to deliver low ESR, significant ripple-current capability, and robust high-temperature endurance. Its defined electrical limits—330 µF at 10 V, 17 mΩ ESR (100 kHz), and 1000-hour life at 125 °C—make it a clear choice where reliable power filtering and thermal tolerance are required.

This part is well suited for engineers and procurement teams specifying through-hole capacitors for general-purpose power conditioning in compact, high-temperature designs. The combination of measurable ripple handling, low leakage, and RoHS compliance supports long-term reliability and regulatory needs.

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