UCX1H391MNS1MS

The UCX1H391MNS1MS is a surface-mount, chip-type aluminum electrolytic capacitor designed for high-reliability, high-temperature applications. It provides 390 µF capacitance at 50 V with a low-temperature ESR specification and a wide operating range from -40°C to 135°C.

Targeted at demanding power and electronic systems—including automotive electronics where AEC-Q200 qualification is required—this part delivers high ripple-current capability, vibration resistance, and a 2000-hour endurance rating at 135°C for sustained performance in elevated-temperature environments.

Key Features

• Capacitance and Voltage: 390 µF nominal capacitance with a rated voltage of 50 V and tolerance of -20% to +20% for predictable bulk energy storage.
• Low-Temperature ESR Specification: Specified ESR of 90 mΩ measured at 20°C and 100 kHz, with added ESR characterization after -40°C testing to support low-temperature performance visibility.
• Loss Tangent (tan δ): tanδ = 0.16 measured at 20°C, 120 Hz, providing a defined dissipation characteristic for AC and ripple conditions.
• High Ripple-Current Capability: Rated ripple current of 375 mA at 120 Hz (low frequency) and 750 mA at 10 kHz (high frequency) to support power supply smoothing and decoupling tasks.
• Leakage Current: Specified leakage current of 195 µA for predictable quiescent behavior under rated voltage.
• High-Temperature Endurance: Life rating of 2000 hours at 135°C with defined limits (capacitance change within ±30% and tanδ within 300% of initial specified value after the test).
• Reliability and Qualification: AEC-Q200 qualified and vibration resistant to meet demanding reliability requirements.
• Surface-Mount, Assembly-Ready Package: Chip-type radial can SMD in a φ12.5 × 13.5 mm package designed for automated placement and supplied in embossed carrier taping for high-volume assembly.
• Wide Operating Temperature: Rated for -40°C to 135°C to support designs exposed to broad thermal extremes.

Typical Applications

• Automotive electronics: Bulk decoupling and power smoothing in control modules and power rails where AEC-Q200 qualification and high-temperature endurance are required.
• Power supply filtering: Input/output smoothing and ripple suppression in power converters operating at elevated temperatures up to 135°C.
• High-temperature embedded systems: Energy storage and decoupling in industrial and commercial equipment that must maintain performance across -40°C to 135°C.

Unique Advantages

• High-temperature endurance: 2000-hour life at 135°C provides a measurable reliability baseline for designs exposed to sustained high temperatures.
• Defined low-temperature behavior: ESR specification includes post-test characterization at -40°C, giving engineers confidence in performance across the full temperature range.
• Measurable ripple handling: Dual-frequency ripple ratings (375 mA @120 Hz and 750 mA @10 kHz) simplify selection for both low- and high-frequency power noise environments.
• AEC-Q200 qualified: Formal qualification supports use in automotive and other high-reliability domains where component-level qualification is required.
• Assembly-friendly packaging: Embossed carrier taping and an SMD can format enable automated placement and reduced handling time in production lines.
• Compact chip footprint: φ12.5 × 13.5 mm package with specified surface-mount land size (1.28 × 1.28 cm) helps integrate substantial capacitance into space-constrained boards.

Why Choose UCX1H391MNS1MS?

UCX1H391MNS1MS combines a high-capacitance 390 µF value with a 50 V rating and engineered low-temperature ESR characterization to deliver stable energy storage across -40°C to 135°C. Its AEC-Q200 qualification, vibration resistance, and 2000-hour high-temperature endurance make it suitable for designs that require documented reliability under thermal and mechanical stress.

This capacitor is well suited for engineers designing automotive-grade power rails, industrial power supplies, and other systems where sustained high-temperature operation, known ripple-current capability, and automated assembly readiness are priorities. The part’s measurable electrical parameters simplify component selection and system-level validation.

Request a quote or submit an inquiry to receive pricing and availability for UCX1H391MNS1MS and to discuss qualification or volume supply needs.