UPJ1H390MED

The UPJ1H390MED is a radial-lead aluminum electrolytic capacitor with a nominal capacitance of 39 µF and a rated voltage of 50 V. It is a polarized, low-impedance device designed for general-purpose power applications and is part of Nichicon's UPJ series.

This part supports a wide operating temperature range of -55°C to 105°C, provides defined ripple-current capability, and carries a lifecycle rating of 2000 hours at 105°C. Status: End Of Life.

Key Features

• Electrical — Capacitance & Voltage 39 µF nominal capacitance with a 50 V rated voltage and capacitance tolerance of -20% to +20%.
• Low Impedance for Power Series specification indicates low impedance behavior suitable for switching power supplies and power-rail filtering.
• Ripple Current & Loss Low-frequency ripple current: 76.5 mA at 120 Hz; high-frequency ripple current: 150 mA at 200 kHz. Tangent of loss angle (tan δ) is 0.10 (measured at 20°C, 120 Hz).
• Leakage Current Specified leakage current of 58.5 µA (measured conditions per product data).
• Reliability & Endurance Rated for 2000 hours life at 105°C; endurance criteria include capacitance change within ±20% and tan δ within specified limits after life testing.
• Mechanical — Radial Lead Package Compact radial can: φ6.3 × 11 mm length, 2.5 mm lead spacing (±0.5 mm); available in bulk or bag packing with no terminal forming.
• Environmental Compliance RoHS compliant as provided in the product data.

Typical Applications

• Switching Power Supplies Low impedance characteristics and defined ripple-current ratings make this capacitor suitable for output filtering and decoupling in switching regulators.
• Power-Rail Smoothing Used for smoothing and stabilizing DC rails where a compact radial electrolytic is required.
• General-Purpose Electronics Suitable for a variety of general-purpose power applications that require a 39 µF, 50 V polarized capacitor in a small radial can.

Unique Advantages

• Compact, low-profile package: φ6.3 × 11 mm can size offers a small footprint for space-constrained power designs.
• Defined ripple capability: Specified ripple currents at both low and high frequencies help engineers size capacitors for real-world switching and AC ripple conditions.
• Wide operating temperature: -55°C to 105°C rating supports demanding thermal environments within the specified lifecycle.
• Clear endurance specification: 2000 hours at 105°C with quantifiable limits on capacitance change, tan δ, and leakage current aids reliability planning.
• RoHS compliant: Meets environmental restriction requirements stated in the product data.

Why Choose UPJ1H390MED?

UPJ1H390MED combines a compact radial can with defined electrical performance—39 µF at 50 V—alongside measured ripple-current capability and a wide operating temperature range. It is positioned for engineers needing a reliable, general-purpose aluminum electrolytic for power filtering and decoupling in compact designs.

This part is suitable for design iterations where predictable endurance and measurable leakage and loss characteristics are required. Note that the product is listed as End Of Life; please evaluate lifecycle needs and availability when considering it for new designs.

If you require pricing, availability, or help identifying suitable alternatives or replacements, request a quote or submit a product inquiry to our sales team to discuss your requirements and lead times.