UPJ1A331MPD

The UPJ1A331MPD is a radial-lead aluminum electrolytic capacitor in Nichicon’s UPJ series, offering a 330 µF capacitance at a 10 V rating. Designed as a low-impedance, general-purpose component, it is particularly suited for filtering and energy storage in switching power supplies and other power-electronics circuits.

Key value comes from its compact φ8 × 11.5 mm can, a broad operating temperature range from −55°C to +105°C, and endurance rated for 3000 hours at 105°C, delivering stable performance in demanding thermal environments.

Key Features

• Capacitance & Voltage — 330 µF nominal capacitance with a tolerance of −20% to +20% at 120 Hz, 20°C; rated voltage 10 V.
• Low‑Loss, Low‑Impedance Performance — tan δ (loss tangent) of 0.19 measured at 20°C, 120 Hz, 10 V, supporting effective decoupling and ripple smoothing in power rails.
• Ripple Current Capability — Specified ripple handling of 203 mA at 120 Hz (low frequency) and 350 mA at 200 kHz (high frequency), helping manage both mains‑frequency and switching ripple components.
• Leakage Current — Initial leakage current listed at 99 µA, suitable for power-filtering applications where controlled leakage is required.
• Reliability & Endurance — Rated for 3000 hours life at +105°C for the φ8 case size, with endurance limits defined for capacitance, tan δ and leakage current.
• Temperature Stability — Operational range from −55°C to +105°C; impedance stability at low temperature is provided by the UPJ series characteristics.
• Package & Mounting — Radial lead can package (φ8 × 11.5 mm) with 3.5 mm lead spacing and bulk or bag packing options; polarization requires correct orientation in circuits.
• Compliance — RoHS compliant per product information.

Typical Applications

• Switching Power Supplies — Local output filtering and bulk decoupling where low impedance and ripple handling improve regulator stability and transient response.
• DC–DC Converters — Input and output smoothing for converters operating at or below the 10 V rating, benefiting from the part’s high-frequency ripple capability.
• Industrial Power Modules — Power-filtering in compact modules that require a small radial can and robust thermal endurance up to 105°C.
• General Purpose Electronics — Energy storage and decoupling in consumer and professional electronics that need reliable polarized capacitance in a radial form factor.

Unique Advantages

• Targeted Low‑Impedance Design — Loss tangent and ripple-current specifications make this capacitor effective at reducing impedance across switching frequencies commonly found in power supplies.
• Compact Radial Can — φ8 × 11.5 mm size with 3.5 mm lead spacing delivers a space-efficient option for through‑hole hardware designs.
• Wide Temperature Range — −55°C to +105°C operating range supports applications across varied thermal environments without derating outside the specified window.
• Validated Endurance — 3000 hours at 105°C for the φ8 case size gives a quantifiable lifecycle metric for thermal endurance planning.
• Controlled Leakage — Specified leakage current allows predictable behavior in power-sensitive circuits.
• RoHS Compliance — Meets RoHS requirements for use in regulated electronic assemblies.

Why Choose UPJ1A331MPD?

UPJ1A331MPD combines the UPJ series’ low-impedance characteristics with a compact radial-can package, providing a practical solution for designers needing reliable decoupling and bulk storage at a 10 V rail. Its specified ripple current capabilities and measured loss characteristics make it a solid choice for switching power supplies, DC–DC converters, and general-purpose power filtering.

Manufactured by Nichicon and offered in standard bulk/bag packaging, this part suits engineers and procurement teams who require clear, verifiable performance data—temperature rating, endurance, leakage, and ripple specs—when specifying capacitors for long-term operation.

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