UBY1K391MHL

The UBY1K391MHL is an aluminum electrolytic capacitor from Nichicon’s UBY series, designed as a radial-lead, high-voltage capacitor for demanding environments. It combines a 390 µF capacitance with an 80 V rating and is optimized for high ripple current and high-temperature endurance up to 135°C.

This part is targeted at automotive and high-temperature electronic control applications where robust ripple handling, low ESR, and AEC‑Q200 qualification matter for long-term reliability and system stability.

Key Features

• Capacitance & Voltage — 390 µF nominal capacitance with an 80 V rated voltage and capacitance tolerance of ±20% (120 Hz, 20°C).
• Low Loss Characteristics — tan δ (DF) of 0.08 measured at 20°C, 120 Hz for the 80 V rating, supporting stable performance under AC conditions.
• High Ripple Current — Low-frequency ripple current of 1.025 A at 120 Hz and high-frequency ripple current of 2.05 A at 100 kHz, enabling effective smoothing in power circuits.
• Low ESR — Equivalent series resistance of 54 mΩ measured at 20°C, 100 kHz, reducing power dissipation and temperature rise under ripple load.
• High-Temperature Endurance — Rated for operation from −40°C to +135°C with a specified life of 2000 hours at 135°C for the 63–100 V class.
• Package & Mounting — Radial lead can (φ12.5 × 25 mm), lead spacing 5.0 mm (±0.5 mm), designed for through-hole mounting and available in Bulk (No Terminal Forming) or Bag packing.
• Reliability & Compliance — AEC‑Q200 qualified and RoHS compliant; product is in mass production.
• Leakage Current — Specified leakage current of 936 µA (after 1 minute’s application at 20°C as per product conditions).

Typical Applications

• Electric Power Steering (EPS) — Provides bulk energy storage and ripple suppression in steering control modules exposed to wide temperature ranges.
• Direct Injection Engine Drive — Supports high-voltage smoothing and transient suppression in fuel injection drive electronics.
• Automotive Control Modules — Suitable for vehicle control electronics requiring AEC‑Q200 qualification, high ripple capability, and operation to 135°C.

Unique Advantages

• High ripple capability: Rated ripple currents at both 120 Hz and 100 kHz enable effective filtering across low- and high-frequency domains.
• Low ESR for reduced losses: 54 mΩ ESR at 100 kHz minimizes I²R losses and heat generation under ripple load.
• High-temperature endurance: Qualified to operate up to 135°C with a defined 2000-hour life at that temperature for the 63–100 V class.
• AEC‑Q200 qualification: Designed to meet automotive-grade reliability expectations for use in vehicle electronic systems.
• Compact radial form factor: φ12.5 × 25 mm can with 5 mm lead spacing provides a space-efficient through-hole solution for power electronics.
• Production-ready availability: Mass production status and standard packaging options (Bulk/Bag) simplify procurement and assembly planning.

Why Choose UBY1K391MHL?

UBY1K391MHL is positioned for designs that demand robust high-voltage filtering and stable operation in elevated-temperature environments. Its combination of 80 V rating, substantial capacitance, industry-recognized AEC‑Q200 qualification, and strong ripple-handling performance makes it a practical choice for automotive control electronics and other high-temperature power systems.

Engineers specifying this part benefit from a compact radial can package with low ESR and clearly defined endurance data, helping to simplify system thermal and lifetime calculations while leveraging Nichicon’s production readiness and RoHS compliance.

To request a quote, check availability, or obtain lead‑time information, please contact sales to submit a request for quotation.