UBY1H621MHL

The UBY1H621MHL is a radial-lead aluminum electrolytic capacitor rated at 620 µF and 50 V designed for high-temperature, high-ripple environments. It combines a compact radial can package (φ12.5 × 20 mm) with a wide operating temperature range of −40 °C to +135 °C and AEC-Q200 qualification for automotive-grade applications.

Engineered for power smoothing and decoupling in demanding control circuits, this capacitor delivers high ripple current handling and low impedance for improved system stability in automotive and other high-reliability designs.

Key Features

• Capacitance and Voltage — 620 µF capacitance at a 50 V rated voltage with ±20% tolerance, suitable for bulk energy storage and decoupling tasks.
• High-Temperature Endurance — Rated to operate from −40 °C to +135 °C with an endurance specification of 3000 hours at 135 °C.
• High Ripple Current — Low-frequency ripple current of 735 mA (120 Hz) and high-frequency ripple current of 1.47 A (100 kHz) to support power electronics stress.
• Low ESR — Equivalent series resistance of 56 mΩ at 20 °C / 100 kHz for reduced power loss and improved thermal performance.
• Leakage and Reliability — Specified leakage current of 930 µA and robust endurance limits (capacitance change, tan δ, leakage) after rated endurance testing.
• Automotive Qualification & Compliance — AEC-Q200 qualified and RoHS compliant, aligning with automotive and regulatory requirements.
• Compact Radial Package — φ12.5 × 20 mm can with 5 mm lead spacing (±0.5 mm) and lead diameter 0.6 mm; available in bulk or bag packing for production flexibility.

Typical Applications

• Electric Power Steering (EPS) — Provides smoothing and decoupling for high-demand EPS control modules where temperature and ripple resilience are required.
• Direct Injection Engine Drive — Suited to engine control circuits that require stable capacitance and high ripple handling at elevated temperatures.
• Automotive Control Modules — Ideal for power supply smoothing and transient suppression in ECUs and other vehicle control electronics.

Unique Advantages

• High ripple-handling capability: Supports up to 1.47 A at 100 kHz and 735 mA at 120 Hz, enabling reliable performance under heavy AC stress.
• Low impedance design: 56 mΩ ESR at 100 kHz reduces voltage drop and thermal dissipation in power paths.
• Wide operating temperature: −40 °C to +135 °C rating allows deployment in thermally demanding environments.
• Long elevated-temperature life: 3000 hours endurance at 135 °C provides predictable longevity in high-temperature applications.
• Automotive-grade qualification: AEC-Q200 rating and RoHS compliance support use in regulated automotive designs.
• Compact, production-ready packaging: Small φ12.5 × 20 mm radial can with 5 mm lead spacing and bulk/bag packing simplifies assembly and inventory choices.

Why Choose UBY1H621MHL?

UBY1H621MHL positions itself as a robust, high-temperature electrolytic solution for designers requiring strong ripple performance, low ESR, and automotive-grade reliability. Its combination of 620 µF capacitance, 50 V rating, and 3000-hour endurance at 135 °C makes it well suited to power smoothing and decoupling duties in control electronics exposed to elevated temperatures and heavy ripple.

With AEC-Q200 qualification, RoHS compliance, compact radial packaging, and production-friendly packing options, this Nichicon part supports long-term deployment in automotive and other demanding applications where thermal tolerance and electrical performance are priorities.

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