UCZ1H122MNS1MS

The UCZ1H122MNS1MS is a high-reliability aluminum electrolytic chip capacitor in an SMD can-style package designed for demanding temperature environments. It is a polarized 1.2 mF, 50 V capacitor optimized for applications that require low-temperature ESR performance and long-term stability up to +125°C.

Targeted at automotive and other high-reliability markets, this part combines low ESR, rated ripple current capability, and AEC-Q200 qualification with surface-mount compatibility for automated assembly.

Key Features

• Core Type & Capacitance — Aluminum electrolytic chip capacitor, 1.2 mF nominal capacitance with ±20% tolerance at 120 Hz, 20°C.
• Rated Voltage — 50 V DC rating suitable for a range of power-supply filtering and decoupling tasks.
• High Temperature Operation — Specified for operation from −40°C to +125°C, with endurance testing up to 4000 hours at 125°C.
• Low-Temperature ESR Specification — ESR performance is specified after testing at −40°C; equivalent series resistance is 38 mΩ measured at 100 kHz for this part.
• Ripple Current Handling — Rated ripple current 1.45 A at 120 Hz (low frequency) and 2.9 A at 10 kHz (high frequency), supporting power smoothing and decoupling in switching supplies.
• Mounting & Package — Surface-mount, radial can-style SMD package compatible with automated mounting machines fed with carrier tape; package dimensions L: 2.15 × D: 1.8 cm and recommended land size L: 1.83 × W: 1.83 cm.
• Reliability & Qualification — AEC-Q200 qualified and compliant with RoHS (2011/65/EU, (EU)2015/863), suitable for designs requiring recognized component-level reliability.
• Polarized Performance — Polarized capacitor suited for DC filtering and energy storage tasks where polarity is defined.

Typical Applications

• Automotive Electronics — Filtering and energy storage in in-vehicle power electronics where AEC-Q200 qualification and operation to +125°C are required.
• Power Supply Filtering — Bulk smoothing and decoupling for DC-DC converters and power rails that require low ESR and rated ripple current.
• High-Temperature Electronics — Use in modules and assemblies that must operate reliably at elevated ambient temperatures up to +125°C.

Unique Advantages

• Specified Low-Temperature ESR — ESR is characterized after −40°C testing and explicitly listed (38 mΩ at 100 kHz), enabling predictable performance across the full operating temperature range.
• High-Temperature Endurance — Endurance rating of 4000 hours at 125°C supports long-term reliability in thermally demanding environments.
• High Ripple Current Capability — Separate ripple current ratings at 120 Hz and 10 kHz provide clear selection guidance for both low- and high-frequency power filtering.
• Automated Assembly Ready — Designed for carrier-tape feeding and automatic mounting, simplifying high-volume manufacturing and reducing assembly complexity.
• AEC-Q200 Qualification — Component-level qualification for systems where recognized reliability standards are required.

Why Choose UCZ1H122MNS1MS?

The UCZ1H122MNS1MS positions itself as a practical solution for engineers who need a high-capacitance, low-ESR electrolytic in a surface-mount, high-temperature-capable package. Its defined ESR after −40°C testing, clear ripple current ratings, and 4000-hour endurance at 125°C make it well suited for designs that demand predictable electrical behavior and thermal robustness.

This part is ideal for teams developing automotive-grade power electronics, high-temperature power supplies, and other applications where AEC-Q200 qualification, RoHS compliance, and automated assembly compatibility are important factors in component selection.

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