UPJ1V121MPD

The UPJ1V121MPD is a Nichicon UPJ series aluminum electrolytic capacitor in a radial lead can, rated 120 µF at 35 V. It is designed for low impedance performance and is well suited for switching power supply applications and general-purpose DC filtering where compact, reliable decoupling is required.

This part combines a small φ8×15 mm case with a 3.5 mm lead spacing, a wide operating temperature range of −55°C to 105°C, and an endurance of 3000 hours at 105°C for the φ8 case size.

Key Features

• Capacitance and Voltage — 120 µF nominal capacitance with a rated voltage of 35 V and tolerance of −20% to +20%.
• Low impedance construction — UPJ series design optimized for low impedance, suitable for switching power supply decoupling.
• Loss tangent (tan δ) — tanδ specified at 0.12 (measured at 20°C, 120 Hz) for the 35 V rating, supporting predictable ESR behavior.
• Ripple handling — Low-frequency ripple current 196.1 mA (120 Hz) and high-frequency ripple current 370 mA (200 kHz) to support a range of switching frequencies.
• Leakage current — Specified leakage current of 126 µA after initial application of rated voltage at 20°C.
• Thermal and longevity — Rated for operation from −55°C to 105°C with a specified endurance of 3000 hours at 105°C for the φ8 case.
• Package and mounting — Radial lead can (φ8 × 15 mm), lead spacing 3.5 mm (±0.5 mm), available in bulk or bag packing.
• RoHS compliant — Meets RoHS directive requirements as noted for the UPJ series.

Typical Applications

• Switching Power Supplies — Low-impedance UPJ construction and rated ripple currents help with output filtering and smoothing in DC–DC converters.
• General Power Filtering — 120 µF capacitance and 35 V rating provide bulk decoupling and ripple suppression in industrial and consumer power rails.
• Embedded and PCB Power Rails — Compact φ8×15 mm can and 3.5 mm lead spacing facilitate placement on densely populated PCBs for local energy storage.

Unique Advantages

• Designed for low impedance: Series design emphasis on low impedance supports improved transient response and reduced ripple voltage in switching circuits.
• Compact high-voltage rating: 35 V capability in a small φ8 can lets designers meet voltage headroom requirements without increasing board footprint.
• Wide temperature range and defined life: −55°C to 105°C operation with 3000-hour endurance at 105°C for φ8 ensures predictable performance in elevated-temperature environments.
• Measured loss and leakage specs: Specified tanδ (0.12 at 20°C, 120 Hz) and leakage current (126 µA) allow reliable ESR and leakage budgeting in designs.
• Frequency-aware ripple ratings: Separate low- and high-frequency ripple current figures (196.1 mA at 120 Hz and 370 mA at 200 kHz) help optimize placement for both mains-derived and high-frequency switching noise.
• RoHS compliance: Conforms to RoHS directives, simplifying regulatory considerations for many applications.

Why Choose UPJ1V121MPD?

UPJ1V121MPD provides a practical balance of capacitance, voltage rating, low impedance, and a compact radial-lead footprint for designers needing reliable bulk decoupling and ripple suppression in switching power supplies and general power-filtering applications. The specified tanδ, leakage current, and frequency-specific ripple ratings make performance predictable for engineering validation and BOM specification.

This part is suited for engineers and procurement teams designing compact power stages and board-level decoupling where controlled ESR, thermal endurance to 105°C, and RoHS compliance are required. Its proven UPJ series characteristics deliver predictable life and performance for long-term deployments.

Request a quote or submit a pricing inquiry to receive availability and lead-time information for UPJ1V121MPD.