UBY2A951MHL

The UBY2A951MHL is a Nichicon UBY series aluminum electrolytic capacitor in a radial‑lead can, rated at 950 µF and 100 V. It is designed for high ripple current and high-temperature operation, offering a compact radial package (φ18×40L) with 7.5 mm lead spacing.

Targeted at demanding power-electronics applications, this capacitor provides a combination of low impedance, high ripple handling, and AEC‑Q200 qualification for use in automotive and industrial control circuits that require robust performance up to 135°C.

Key Features

• Capacitance & Voltage: 950 µF nominal capacitance with a rated voltage of 100 V and capacitance tolerance of −20% to +20% for predictable bulk energy storage.
• High Ripple Current Handling: Low‑frequency ripple current of 2.292 A (120 Hz) and high‑frequency ripple current of 3.82 A (100 kHz) to support power supply smoothing and transient load demands.
• Low Impedance / Low ESR: ESR of 21 mΩ measured at 20°C/100 kHz, minimizing power loss and heat generation in high‑frequency applications.
• High Temperature Endurance: Rated to operate from −40°C to 135°C with an endurance rating of 2000 hours at 135°C (for 63–100 V range), suitable for high‑temperature environments.
• Leakage & Loss Characteristics: Leakage current specified at 2850 µA and tan δ (DF) of 0.08 (measured at 20°C, 120 Hz) for stable dielectric performance.
• Package & Mounting: Radial lead can (φ18×40L) with 7.5 mm lead spacing and bulk/bag packing options for flexible assembly handling.
• Compliance & Qualification: RoHS compliant and AEC‑Q200 qualified, reflecting series-level suitability for automotive-grade applications.

Typical Applications

• Automotive control systems: Suited for control modules such as electric power steering and direct injection engine drive where high ripple current and elevated operating temperature are required.
• Power conversion and regulation: Bulk energy storage and smoothing in DC–DC converters and power-supply rails subject to high-frequency switching.
• Motor drive electronics: Decoupling and filtering in motor controllers and inverter stages to absorb transients and reduce voltage ripple.

Unique Advantages

• High ripple capability: Specified ripple ratings at 120 Hz and 100 kHz provide measurable headroom for both low- and high-frequency load conditions.
• Low ESR for efficiency: 21 mΩ ESR at 100 kHz reduces I²R losses and helps maintain lower operating temperature in dense power designs.
• Wide temperature range and proven endurance: −40°C to 135°C operating range with 2000‑hour endurance at 135°C supports reliable operation in elevated-temperature environments.
• Automotive-grade qualification: AEC‑Q200 qualification and RoHS compliance support use in regulated automotive and industrial applications.
• Compact radial form factor: φ18×40L can with 7.5 mm lead spacing provides a space-efficient solution for through‑hole assemblies.

Why Choose UBY2A951MHL?

UBY2A951MHL combines high nominal capacitance and purposely specified ripple current capabilities with low ESR and high-temperature endurance, making it a practical choice for engineers designing robust power and control electronics. Its radial can package and industry-recognized qualifications (AEC‑Q200, RoHS) make it suitable for applications that demand predictable performance under elevated thermal and electrical stress.

This part is appropriate for designers seeking a proven electrolytic solution for energy buffering, decoupling, or smoothing in automotive and industrial power systems where long-term stability and high ripple handling are priorities.

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