UAS2G270MHD

The UAS2G270MHD is a miniature aluminum electrolytic capacitor from Nichicon's UAS series, provided as a radial-lead, polarized can. It delivers 27 µF capacitance at a 400 V rated voltage and is intended for general-purpose high-voltage filtering and energy-storage roles in electronic power circuits.

Designed for demanding operating conditions, this part combines a compact φ12.5 × 25 mm can, wide operating temperature range (-40 °C to +105 °C), and defined endurance of 2000 hours at 105 °C to support robust power-supply and industrial designs requiring high ripple tolerance and long-term stability.

Key Features

• Capacitance and Voltage: 27 µF nominal capacitance with a 400 V rated voltage for high-voltage smoothing and decoupling.
• Compact Radial Can Package: φ12.5 × 25 mm case with 5.0 mm lead spacing and radial lead mounting for through-hole assembly and secure board placement.
• Wide Temperature Range: Specified for operation from -40 °C to +105 °C to support elevated-temperature environments.
• Endurance: Rated for 2000 hours at 105 °C under DC bias plus rated ripple current, with defined limits for capacitance change, tan δ, and leakage current after test.
• High Ripple Current Capability: Rated ripple currents of 200 mA at 120 Hz (low frequency) and 320 mA at 10 kHz (high frequency), enabling effective filtering across a range of switching frequencies.
• Loss and Leakage Characteristics: Maximum tan δ of 0.15 (measured at 20 °C, 120 Hz) and specified leakage current behavior (0.04CV + 100 µA or less after 1 minute at 20 °C) for predictable electrical performance.
• Safety Design: UAS series includes an improved safety feature for abnormally excessive voltage and a pressure-relief vent that operates without dangerous conditions under normal venting.
• Compliance and Packaging: RoHS compliant; available in bulk (no terminal forming) or bag packing and offered in mass production status.
• Frequency Coefficient for Ripple: Frequency coefficients are specified (e.g., 0.80 at 50/60 Hz, 1.00 at 120 Hz, 1.60 at 10 kHz) to help scale rated ripple for different operating frequencies.

Typical Applications

• Power Supplies and SMPS: Bulk smoothing and output filtering in high-voltage switch-mode power supplies where a 400 V rated capacitor and defined ripple capability are required.
• DC–DC Converters: Energy buffering and decoupling in converters handling high DC bus voltages, taking advantage of the 27 µF capacitance and high-frequency ripple rating.
• Industrial Electronics: General-purpose filtering and energy storage in industrial equipment that must operate across -40 °C to +105 °C and sustain long endurance at elevated temperatures.

Unique Advantages

• High-Voltage Capability: 400 V rated voltage enables use in higher-voltage power rails without up-rating multiple capacitors in series.
• Small Footprint for High Voltage: φ12.5 × 25 mm can size delivers a compact solution for 27 µF at 400 V, conserving PCB space in through-hole designs.
• Wide Temperature and Proven Endurance: Specified -40 °C to +105 °C range and 2000 hours endurance at 105 °C provide predictable life under elevated thermal stress.
• Defined Ripple Performance Across Frequencies: Published low- and high-frequency ripple ratings and frequency coefficients allow designers to size capacitors for both mains-frequency and high-frequency switching environments.
• Predictable Electrical Losses and Leakage: Maximum tan δ and leakage current specifications support reliable impedance and leakage budgeting in power designs.
• Safety Venting Feature: Pressure relief vent and improved abnormal-voltage behavior reduce risk of hazardous failure modes during overvoltage events.

Why Choose UAS2G270MHD?

UAS2G270MHD is positioned for engineers who need a compact, high-voltage electrolytic capacitor with documented ripple, leakage, and endurance characteristics. Its combination of 27 µF at 400 V, robust temperature range, and specified ripple capability makes it suitable for power-supply filtering and energy-buffering roles in industrial and general-purpose electronic equipment.

With RoHS compliance, radial-lead construction, and mass-production availability, the UAS2G270MHD provides a verifiable, repeatable solution for designs that require predictable long-term performance and safety-conscious venting behavior.

Request a quote or contact sales to inquire about pricing, lead times, and sample availability for UAS2G270MHD.