UCX1H681MNQ1MS

The UCX1H681MNQ1MS is a chip‑type aluminum electrolytic capacitor designed for surface‑mount assembly and carrier‑tape mounting. It delivers 680 µF at 50 V in a compact radial can SMD package optimized for high‑temperature applications.

Engineered for demanding operating environments, this part supports −40°C to +135°C operation, includes an ESR specification following low‑temperature testing, and is AEC‑Q200 qualified and RoHS compliant—making it suitable for automotive and other high‑reliability systems that require stable capacitance and ripple handling at elevated temperatures.

Key Features

• Capacitance & Voltage: 680 µF nominal capacitance with a 50 V rated voltage and ±20% tolerance for bulk energy storage and decoupling in power rails.
• High‑Temperature Range & Endurance: Operates from −40°C to +135°C and rated for 2000 hours at 135°C, supporting long‑term performance in hot environments.
• Low‑Temperature ESR Specification: ESR is specified after a −40°C test to ensure reliable low‑temperature behavior; measured ESR is 70 mΩ at 100 kHz.
• Ripple Current Capacity: Handles 600 mA at 120 Hz and 1.2 A at 10 kHz, supporting high ripple and transient currents common in power conversion circuits.
• Surface‑Mount, Tape‑Fed Package: Radial can SMD designed for automatic mounting machines fed with carrier tape; compact footprint L: 1.65 × D: 1.8 cm and recommended land size L: 1.83 × W: 1.83 cm.
• Reliability & Compliance: AEC‑Q200 qualified and RoHS (2011/65/EU,(EU)2015/863) compliant for regulated and safety‑sensitive applications.
• Polarized Electrolytic Design: Polarized construction suited for DC filtering, smoothing, and bulk storage applications.

Typical Applications

• Automotive power electronics: Bulk decoupling and smoothing for DC‑DC converters and ECU power rails where +135°C durability and AEC‑Q200 qualification are required.
• Power management in harsh environments: Energy storage and filtering in industrial controllers and power modules that experience wide temperature swings and elevated ambient temperatures.
• In‑vehicle infotainment and telematics: Stabilizing supply rails and handling ripple in systems that demand compact SMD form factors and automotive reliability.
• Motor drives and actuator controls: DC link filtering and transient absorption where high ripple current capability and temperature endurance improve system robustness.

Unique Advantages

• High‑temperature endurance: Rated for continuous operation up to +135°C with a 2000‑hour endurance rating, extending operational life in hot environments.
• Temperature‑verified ESR: ESR specified after −40°C testing and measured at 70 mΩ (100 kHz), giving engineers a verifiable low‑temperature performance metric.
• Strong ripple handling: 600 mA at 120 Hz and 1.2 A at 10 kHz support demanding switching and transient current conditions.
• Automated assembly ready: Surface‑mount, carrier‑tape compatible radial can simplifies PCB assembly and reduces handling time compared with legacy through‑hole parts.
• Regulatory and reliability credentials: AEC‑Q200 qualification and RoHS compliance provide documented suitability for regulated, high‑reliability designs.
• Compact high‑value footprint: 680 µF at 50 V in a small SMD package (L: 1.65 × D: 1.8 cm) enables space‑efficient power subsystem designs.

Why Choose UCX1H681MNQ1MS?

The UCX1H681MNQ1MS combines high capacitance density with verified performance across −40°C to +135°C and endurance validated at elevated temperature. Its ESR specification after low‑temperature testing, measurable ripple ratings, and AEC‑Q200 qualification make it a practical choice for engineers designing reliable power systems for automotive and other harsh‑environment applications.

Manufactured by Nichicon and RoHS compliant, this surface‑mount radial can capacitor offers a balance of thermal durability, electrical performance, and assembly readiness—helping reduce risk in designs where temperature, ripple current, and long‑term stability are critical.

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