UHD1E221MPD

The UHD1E221MPD is a Nichicon UHD series radial-lead aluminum electrolytic capacitor providing 220 µF capacitance at a 25 V rating. It is engineered for general-purpose use where compact size, high ripple capability and low impedance at high frequency are required.

Featuring a small φ8 × 11.5 mm can, 3.5 mm lead spacing and RoHS compliance, this part targets applications that demand reliable smoothing, decoupling and bulk energy buffering across a wide temperature range (–40°C to +105°C) with 3000 hours endurance at 105°C.

Key Features

• Capacitance & Voltage: 220 µF nominal capacitance with ±20% tolerance at 120 Hz, rated for 25 V operation.
• Low loss (tan δ): tanδ = 0.14 specified at 20°C, 120 Hz and rated voltage (25 V), supporting lower dissipation in AC conditions.
• High ripple capability: Low-frequency ripple current 532 mA (120 Hz) and high-frequency ripple current 760 mA (100 kHz) for improved handling of AC ripple and switching noise.
• Leakage current: Specified leakage current of 55 µA (measured after 2 minutes at 20°C under rated voltage).
• Reliability / Endurance: Rated for 3000 hours at 105°C under DC bias plus rated ripple current, with capacitance and leakage specifications maintained per datasheet endurance criteria.
• Mechanical / Package: Radial lead, can-style package with dimensions φ8 × 11.5 mm, lead spacing 3.5 mm (±0.5 mm) and straight radial leads; available bulk or bag packing (no terminal forming).
• Environmental compliance: RoHS compliant and listed as mass production status.

Typical Applications

• General-purpose power filtering: Smoothing and decoupling in low-voltage circuits where 220 µF at 25 V is required and high ripple currents occur.
• Switching regulator output caps: Bulk and output-side filtering where low impedance and high-frequency ripple handling (up to 760 mA at 100 kHz) improve regulation stability.
• Noise suppression and smoothing: Reducing switching noise and ripple on DC rails across a wide temperature range (–40°C to +105°C).

Unique Advantages

• High ripple handling: Specified ripple currents at both low (532 mA at 120 Hz) and high frequencies (760 mA at 100 kHz) enable use in circuits with significant AC stress.
• Compact radial can: φ8 × 11.5 mm package combines space-saving footprint with axial lead mounting for through-hole assemblies.
• Low dissipation: tanδ of 0.14 at rated conditions reduces self-heating under AC excitation, supporting thermal stability in constrained layouts.
• Proven endurance: 3000-hour life at 105°C under rated conditions gives predictable long-term performance for thermal-stressed designs.
• Controlled leakage: Low leakage current (55 µA) maintains efficiency and minimizes standby losses in DC circuits.
• RoHS compliant and production-ready: Manufactured by Nichicon and available in mass production with standard bulk/bag packing options.

Why Choose UHD1E221MPD?

The UHD1E221MPD delivers a balanced combination of capacitance, voltage rating and ripple capability in a compact radial-lead aluminum electrolytic package. Its low tanδ, controlled leakage and specified high-frequency ripple current make it suitable for power filtering and smoothing in designs that must tolerate thermal and AC stress.

This part is suitable for engineers specifying a proven, RoHS-compliant electrolytic capacitor with defined endurance (3000 h at 105°C) and mechanical dimensions for through-hole assemblies. Its mass-production availability supports predictable sourcing for production builds.

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