UBY2A681MHL

The UBY2A681MHL is a radial lead aluminum electrolytic capacitor offering 680 µF capacitance at a 100 V rating. It is part of the UBY series engineered for high-temperature operation and elevated ripple-current environments.

Targeted for demanding power applications, this polarized can-style capacitor delivers low impedance at high frequency, a wide operating temperature range, and industry-grade qualification for robust system use.

Key Features

• Capacitance & Voltage — 680 µF nominal capacitance with a rated voltage of 100 V and a tolerance of -20% to +20%.
• High-temperature endurance — Rated for operation from -40°C to 135°C with an endurance rating of 2000 hours at 135°C under specified conditions.
• Low impedance / ESR — Designed for low AC impedance; ESR specified at 28 mΩ measured at 20°C / 100 kHz, supporting efficient high-frequency performance.
• High ripple current capability — Low-frequency ripple current of 1.932 A (120 Hz) and high-frequency ripple current of 3.22 A (100 kHz) to support power-stage smoothing and decoupling.
• Electrical characteristics — Dissipation factor (tan δ) of 0.08 at 20°C, 120 Hz; leakage current specified as 2040 µA for this part.
• Form factor & mounting — Radial lead, can package with body dimension φ18 × 30.5 mm and lead spacing of 7.5 mm (±0.5 mm), provided in bulk or bag packing.
• Quality & compliance — AEC-Q200 qualified and RoHS compliant, indicating suitability for applications requiring industry-level reliability and lead-free manufacturing.

Typical Applications

• Automotive control modules — Suited for power filtering and energy buffering in automotive control circuits, including engine and steering control functions that require high-temperature tolerance.
• High-temperature power electronics — Use in power conversion and smoothing stages where elevated ambient or internal temperatures demand extended endurance up to 135°C.
• High ripple-current circuits — Ideal for DC link smoothing and decoupling in systems with substantial low- and high-frequency ripple currents.

Unique Advantages

• High-voltage capability: 100 V rating provides margin for higher-voltage power rails without changing capacitor topology.
• Elevated temperature endurance: Specified 2000-hour life at 135°C supports long-term operation in hot environments and thermally aggressive designs.
• Low ESR at high frequency: 28 mΩ at 100 kHz helps reduce losses and temperature rise in high-frequency power circuits.
• Strong ripple-handling: Defined ripple current ratings at both 120 Hz and 100 kHz enable designers to size capacitors for real-world mixed-frequency stress.
• Automotive-grade qualification: AEC-Q200 qualification supports use in safety- and reliability-focused designs that require recognized component-level qualification.
• RoHS compliant packaging: Supplied in bulk or bag packing and compliant with RoHS, facilitating lead-free assembly processes.

Why Choose UBY2A681MHL?

The UBY2A681MHL combines a high capacitance density with a 100 V rating, low ESR at high frequency, and defined ripple-current capability—qualities that make it suitable for power-stage smoothing and filtering in thermally demanding systems. Its AEC-Q200 qualification and RoHS compliance position it for use in applications where qualification and environmental compliance matter.

This part is appropriate for engineers designing high-temperature power electronics and automotive control modules who require verifiable electrical performance (ESR, ripple current, leakage) and long-term endurance at elevated temperatures.

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