UCX1E122MNQ1MS

The UCX1E122MNQ1MS from Nichicon is a chip-type aluminum electrolytic capacitor in the UCX series designed for high-temperature applications. It is a surface-mount, radial can (SMD) capacitor offering 1.2 mF capacitance at a 25 V rating with an operating temperature range of -40 °C to +135 °C.

This part targets applications requiring high-temperature stability, low equivalent series resistance at high frequency, and long endurance: it features a specified ESR of 50 mΩ at 100 kHz, ripple handling data up to 1.2 A at 10 kHz, and a rated lifetime of 2000 hours at 135 °C. It is AEC-Q200 qualified and compatible with automated carrier-tape surface-mount assembly.

Key Features

• High Temperature Range & Reliability — Rated for operation from -40 °C to +135 °C with endurance specified at 2000 hours at 135 °C.
• Capacitance & Voltage — 1.2 mF nominal capacitance with a 25 V rated voltage and ±20% tolerance.
• Low ESR & High-Frequency Performance — Equivalent series resistance of 50 mΩ measured at 100 kHz, and ripple current ratings of 600 mA at 120 Hz and 1.2 A at 10 kHz.
• Automotive Qualification — AEC-Q200 qualified for designs requiring automotive-grade component qualification.
• Surface-Mount Package — Chip-type radial can SMD package sized L: 1.65 × D: 1.6 cm and surface-mount land recommendation L: 1.63 × W: 1.63 cm, compatible with automated carrier-tape mounting.
• Endurance & Stability — Endurance limits: capacitance change within ±30% after 2000 hours at 135 °C; leakage and tan δ retention defined per datasheet.

Typical Applications

• Automotive power electronics — AEC-Q200 qualification and a -40 °C to +135 °C operating range make this capacitor suitable for power-smoothing and decoupling in automotive modules.
• High-temperature control electronics — Designed for electronics exposed to elevated ambient temperatures where long-term capacitance stability at 135 °C is required.
• Power supply filtering in compact assemblies — The chip-type SMD can package provides high capacitance in a compact footprint for space-constrained power designs.

Unique Advantages

• High-temperature endurance: 2000 hours specified at 135 °C supports reliable operation in heat-exposed electronics.
• Low high-frequency ESR: 50 mΩ at 100 kHz helps minimize losses and improves ripple performance in switching power applications.
• Automated assembly-ready: Carrier-tape compatibility and SMD package simplify pick-and-place integration into production lines.
• Clear performance limits: Specified ripple currents, leakage, and tan δ limits enable predictable design margining for power and filtering circuits.
• Compact, high-capacitance solution: 1.2 mF in a small radial can SMD package reduces board area compared with larger through-hole options.

Why Choose UCX1E122MNQ1MS?

UCX1E122MNQ1MS combines high capacitance density with a validated high-temperature capability and automotive-grade qualification, making it a focused choice for engineers designing power and filtering subsystems that must withstand elevated ambient temperatures. Its low ESR at high frequency and defined ripple current ratings provide measurable benefits for switching supplies and decoupling in demanding environments.

This part is well suited for design teams and procurement sourcing components for robust, space-constrained assemblies that require predictable endurance and automated assembly compatibility. Backed by Nichicon’s UCX series specifications, it offers a concise, verifiable specification set for integration into conservative, reliability-focused designs.

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