UBT1V331MPD8

The UBT1V331MPD8 is a radial-lead aluminum electrolytic capacitor from Nichicon's UBT series, specified for high-temperature operation up to +125°C. It combines 330 µF capacitance with a 35 V rating and is targeted at demanding automotive electronics and other applications that require sustained performance under elevated temperature and ripple load.

Designed as a polarized radial-can capacitor with a compact φ10 × 20 mm package and 5 mm lead spacing, this part delivers low impedance and controlled loss characteristics to support power-supply smoothing and bulk energy storage in robust systems.

Key Features

• Capacitance and Voltage — 330 µF nominal capacitance at a rated voltage of 35 V with ±20% tolerance for predictable bulk energy storage.
• High-Temperature Endurance — Rated for operation from −40°C to +125°C with a specified load life of 5000 hours at 125°C (for the φ10 size), supporting long-term use in elevated-temperature environments.
• Low Impedance and Loss — 75 mΩ impedance and a maximum tanδ of 0.12 (20°C, 120 Hz) to help minimize voltage ripple under load.
• Ripple Current Handling — Specified ripple current of 636.5 mA at 120 Hz and 950 mA at 100 kHz for improved filtering performance across frequency ranges.
• Leakage Current — Initial leakage current specified as 346.5 µA, suitable for designs that require known leakage behavior.
• Automotive-Grade Qualification — AEC-Q200 rated and noted as suited for automobile electronics, enabling use in automotive electronic modules where qualification is required.
• Package and Mounting — Radial can package (φ10 × 20 mm) with 5 mm lead spacing and polarized terminals for through-hole mounting; supplied in bulk/bag packaging for production assembly.
• Environmental Compliance — RoHS compliant.

Typical Applications

• Automotive electronic modules — Bulk energy storage and smoothing for vehicle control units and power rails, benefiting from the 35 V rating, 330 µF capacitance, and high-temperature endurance.
• Power-supply filtering — Ripple attenuation and decoupling in high-temperature environments, leveraging the capacitor's low impedance and specified ripple-current ratings.
• High-temperature electronics — Applications requiring sustained operation at elevated temperatures up to +125°C and long life under bias and ripple load.

Unique Advantages

• Extended high-temperature life — 5000-hour rated life at +125°C (φ10 size) provides predictable longevity in elevated-temperature installations.
• Automotive qualification — AEC-Q200 rating and explicit suitability for automobile electronics help streamline selection for vehicle-grade designs.
• Robust ripple performance — Dual-frequency ripple current specifications (636.5 mA at 120 Hz and 950 mA at 100 kHz) combined with 75 mΩ impedance improve filtering capability across common operating frequencies.
• Controlled dissipation — Specified tanδ of 0.12 (20°C, 120 Hz) supports thermal and loss budgeting in power designs.
• Compact, production-ready packaging — φ10 × 20 mm radial can with 5 mm lead spacing and bulk/bag packaging facilitates through-hole assembly for mass production.
• Regulatory compliance — RoHS compliance supports deployments where restricted-substance requirements apply.

Why Choose UBT1V331MPD8?

The UBT1V331MPD8 positions itself as a reliable, high-temperature aluminum electrolytic capacitor for designers needing 330 µF of bulk capacitance at 35 V with proven endurance at +125°C. Its combination of AEC-Q200 qualification, defined leakage and loss characteristics, and multi-frequency ripple-current capability makes it suitable for automotive and other high-reliability power applications that demand stable performance under thermal and electrical stress.

This part is well suited to engineers developing vehicle electronics and robust power-supply systems who require specified high-temperature life, controlled impedance and loss, and production-ready packaging. Choosing the UBT1V331MPD8 supports long-term robustness and predictable behavior in elevated-temperature environments.

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