UDB1H3R3MPM

The UDB1H3R3MPM is a bi‑polarized aluminum electrolytic capacitor engineered for audio crossover networks and Hi‑Fi speaker systems. Its 3.3 µF capacitance and 50 V rating are provided in a compact radial can package tailored for through‑hole assembly.

Designed for audio use, this radial‑lead capacitor combines a bi‑polar configuration with controlled loss characteristics and low leakage to support stable performance in passive filters and speaker networks across a wide temperature range.

Key Features

• Capacitance & Voltage: 3.3 µF nominal capacitance with a 50 V rated voltage, suitable for mid‑band crossover sections.
• Bi‑Polar Configuration: Bi‑polarized construction specifically intended for speaker network applications, enabling AC‑coupled filter implementations without polarity constraints.
• Package & Mounting: Radial lead, aluminum can package with a case size of approximately 10 × 16 mm and 5 mm lead spacing for straightforward through‑hole PCB mounting.
• Operating Temperature: Rated for –40 °C to +85 °C to accommodate typical audio equipment environmental conditions.
• Low Leakage & Loss: Leakage current specified (approximately 4.95 µA at 20 °C after 5 minutes for this value) and tan δ ≤ 0.10 at 1 kHz (≤ 0.15 at 5 kHz), supporting predictable filter behavior and minimal DC offset drift.
• Audio‑oriented Ripple Handling: Designed with allowable continuous current and rated ripple performance appropriate for speaker crossover frequencies (datasheet values: frequency 6 kHz and rated ripple 400 mArms for this capacitance).
• RoHS Compliant: Conforms to RoHS directive (2011/65/EU, (EU)2015/863), meeting common environmental regulatory requirements.

Typical Applications

• Hi‑Fi Speaker Crossover Networks — Use in passive crossover sections for midrange or tweeter paths where bi‑polar behavior is required for AC waveform handling.
• Passive Audio Filters — Suitable for band‑pass and high‑pass filters in home and professional audio equipment that require stable capacitance and low loss.
• Home Audio Electronics — Integration into amplifiers, receivers, and powered speaker modules for signal conditioning and frequency shaping.
• Professional Sound Systems — Deployment in audio processing racks and crossover assemblies where reliable, repeatable capacitor characteristics are needed.

Unique Advantages

• Audio‑Focused Design: Bi‑polar construction and audio‑specified loss characteristics provide predictable filter behavior in speaker networks.
• Compact Radial Can: 10 × 16 mm package with 5 mm lead spacing enables dense PCB layouts and easy through‑hole assembly.
• Controlled Leakage: Low leakage current specification helps minimize DC shift in passive circuits and supports long‑term stability.
• Documented Ripple Capability: Rated ripple and allowable continuous current values provided for crossover frequency ranges, simplifying thermal and reliability assessments.
• Wide Operating Range: –40 °C to +85 °C rating makes the part suitable for typical consumer and professional audio operating environments.
• Regulatory Compliance: RoHS compliance supports environmentally conscious designs and procurement requirements.

Why Choose UDB1H3R3MPM?

UDB1H3R3MPM positions itself as a practical choice for designers of passive audio crossovers and related Hi‑Fi equipment where a bi‑polar aluminum electrolytic capacitor is required. Its 3.3 µF / 50 V specification, compact radial can format, and audio‑oriented electrical characteristics make it straightforward to integrate into midrange and high‑frequency filter sections.

For engineering teams focused on repeatable acoustic performance and clear spec traceability, this part offers measurable advantages in leakage, loss angle, and ripple handling—backed by Nichicon’s documented datasheet values and RoHS conformity.

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