UBC1H681MNS1MS

The UBC1H681MNS1MS is a chip-type aluminum electrolytic capacitor from Nichicon's UBC series designed for demanding, high-temperature environments. It is a polarized, surface-mount radial can (SMD) capacitor specified at 680 µF and 50 V, built for applications that require long life under elevated temperature and mechanical vibration.

Engineered for use in automobile electronics and other heavy-duty systems, this capacitor delivers rated performance across a broad temperature range and is AEC-Q200 qualified with RoHS compliance.

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance at a rated voltage of 50 V, with capacitance tolerance of ±20% (120 Hz, 20°C).
• High-temperature endurance — Rated for continuous operation up to 150°C with a specified load-life of 1000 hours at +150°C.
• Wide operating range — Specified operating temperature range of −55°C to +150°C for applicable case sizes.
• Vibration resistance — Chip-type construction with vibration-resistant design suited to mechanically demanding assemblies.
• Ripple handling — Rated ripple current: 737 mA at 120 Hz (low frequency) and 1.1 A at 10 kHz (high frequency), with frequency coefficients defined in the series datasheet.
• Leakage and loss characteristics — Leakage current specified as not more than 0.03 × C × V (µA) after 1 minute at 20°C; tan δ limits provided per rated voltage and case size.
• Package & mounting — Surface-mount radial, can-style SMD; recommended PCB land size L: 1.83 × W: 1.83 cm with part dimensions L: 2.15 × D: 1.8 cm.
• Qualification & compliance — AEC-Q200 qualified and RoHS compliant (2011/65/EU, (EU)2015/863).

Typical Applications

• Automotive electronics — Suited for vehicle electronic modules where long high-temperature life and vibration resistance are required.
• High-temperature power assemblies — Applied in circuits that operate at elevated ambient temperatures, leveraging the 1000-hour rating at +150°C.
• Vibration-prone systems — Designed for use in environments subject to mechanical stress where a vibration-resistant chip-type capacitor is needed.
• Surface-mount power modules — For SMD designs requiring radial can capacitors with specified land patterns and package dimensions.

Unique Advantages

• Engineered for elevated temperatures: The 1000-hour load-life specification at +150°C provides a verifiable endurance metric for high-temperature designs.
• AEC-Q200 qualification: Explicit qualification for automotive-grade reliability enables selection for vehicle electronics where that standard is required.
• Vibration-resistant chip form: Chip-type construction and radial can SMD packaging reduce mechanical risk in vibration-prone applications.
• Clear electrical limits: Defined leakage current formula and tan δ limits make electrical behavior predictable for design margins and validation.
• Broad ripple capability: Specified ripple current at both low and high frequencies supports use across a range of DC power and switching frequencies.
• RoHS compliant: Meets RoHS directives (2011/65/EU, (EU)2015/863) for restricted substances in electronics manufacturing.

Why Choose UBC1H681MNS1MS?

UBC1H681MNS1MS is positioned for engineers specifying capacitors for high-temperature, vibration-exposed electronics—particularly in automotive and heavy-duty systems. Its combination of 680 µF/50 V rating, AEC-Q200 qualification, and a specified 1000-hour endurance at +150°C provides measurable reliability for designs that must withstand sustained elevated temperatures.

This part is appropriate for design teams that require clearly defined electrical and mechanical parameters (leakage current, tan δ, ripple current, package land size) and desire components with documented qualification and RoHS compliance for long-term deployment.

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