UPJ1H121MPD

The UPJ1H121MPD is a radial-lead aluminum electrolytic capacitor designed for low-impedance power applications. In a compact φ8 mm × 20 mm can with 3.5 mm lead spacing, it delivers 120 µF at 50 V and is optimized for switching power supplies and other general-purpose DC power filtering.

Engineered for reliability under elevated temperature, this RoHS‑compliant capacitor offers a wide operating range and specified endurance for demanding power environments.

Key Features

• Capacitance & Voltage — 120 µF rated capacitance at 50 V, with a capacitance tolerance of ±20% (measured at 120 Hz, 20°C).
• Low Impedance — Designed as a low-impedance aluminum electrolytic suited for switching power supplies; characteristic loss tangent (tan δ) at 50 V is specified (max. 0.10).
• Ripple Current Capability — Specified ripple current: 241.2 mA at 120 Hz (low frequency) and 455 mA at 200 kHz (high frequency), enabling effective smoothing of switching ripple.
• Thermal & Lifetime Performance — Operating temperature range of −55°C to +105°C; rated for 3000 hours at +105°C for the φ8 case size.
• Package & Mounting — Radial lead, can-type package (φ8 mm diameter × 20 mm length) with 3.5 mm lead spacing for through-hole PCB mounting.
• Leakage Current Specification — After 1 minute’s application of rated voltage at 20°C, leakage current is not more than 0.03CV (µA) as specified in the series datasheet.
• Polarized Design — Polarized electrolytic capacitor for correct polarity use in DC power circuits.
• Compliance — RoHS compliant.

Typical Applications

• Switching Power Supplies — Bulk and output filtering to reduce ripple and improve regulation in switching converters.
• General Purpose Power Filtering — Decoupling and smoothing in a range of DC power circuits and power rails.
• Power Modules and Converters — Compact through-hole solution for power supply modules where reliable ripple handling and elevated-temperature endurance are required.

Unique Advantages

• Low-impedance performance: Tangent of loss angle and ripple current ratings provide measurable benefits for handling switching ripple and minimizing voltage drop under dynamic load.
• Compact radial can: φ8 mm × 20 mm package with 3.5 mm lead spacing delivers a small footprint for through-hole designs while preserving capacitance.
• High-temperature endurance: Rated for 3000 hours at +105°C (φ8 case), supporting reliability in thermally demanding power assemblies.
• Wide operating range: −55°C to +105°C rating enables use across diverse environmental conditions.
• Measured leakage characteristics: Defined leakage current formula (≤0.03CV µA after 1 minute at 20°C) supports predictable hold-up and discharge behavior.
• Regulatory compliance: RoHS status simplifies selection for designs targeting restricted-substance compliance.

Why Choose UPJ1H121MPD?

The UPJ1H121MPD positions itself as a compact, low-impedance electrolytic capacitor tailored for switching power supplies and general DC power filtering. Its combination of 120 µF capacitance at 50 V, specified ripple-current performance at both low and high frequency, and a 3000‑hour endurance rating at +105°C make it suitable for designers balancing size, thermal robustness, and ripple-handling needs.

This part is a practical choice for engineers specifying through-hole components in power modules, converter outputs, and general-purpose power rails who require documented performance and RoHS compliance from a proven aluminum electrolytic series.

Request a quote or submit an inquiry for pricing and availability to begin integrating UPJ1H121MPD into your design.