Diodes Incorporated UF3001-T

Overview

UF3001-T from Diodes Incorporated is a 3.0A ultra-fast recovery rectifier diode in DO-201AD package, rated for 50V peak repetitive reverse voltage, 1.0V forward voltage at 3.0A, and 50ns reverse recovery time, designed for high-frequency switching power supplies and AC/DC adapters.

For engineers reviewing the UF3001-T datasheet, UF3001-T pinout, UF3001-T application, or UF3001-T equivalent, key selection criteria include reverse recovery time (50 ns), surge capability (150A peak), thermal resistance (35°C/W), low leakage (<5 µA @ 25°C), and RoHS-compliant tin-plated leads.

Technical Context

This ultra-fast rectifier uses a diffused junction to achieve 50 ns reverse recovery time and low forward voltage drop (1.0 V @ 3.0 A), enabling high-efficiency operation in 50–100 kHz SMPS topologies. Its 150A non-repetitive surge rating supports inrush current handling in offline input stages.

The device operates across –65°C to +150°C with 35°C/W junction-to-ambient thermal resistance, and exhibits <5 µA reverse leakage at 25°C and <100 µA at 100°C - critical for standby power compliance in energy-sensitive designs.

Key Specifications

Pinout & Package

DO-201AD molded plastic package (UL 94V-0), axial leaded, cathode indicated by band. Weight: 1.1 g. Moisture sensitivity level: MSL 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-fast rectifier applications.

Compared with MURS320 and US3M, UF3001-T uniquely balances 50V rating, 50ns speed, and DO-201AD through-hole compatibility - making it optimal for cost-sensitive, high-volume AC/DC adapters requiring proven surge robustness and thermal margin.

Availability

UF3001-T is available at Aetrix Electronics and suitable for AC/DC adapters, industrial PLC power inputs, LED driver bulk charging circuits, and USB-C PD power supply output rectification requiring stable component supply and long-term manufacturability.

Supply support for UF3001-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and Malaysia.

The UF3001-T belongs to Diodes' ultra-fast rectifier product line, engineered specifically for high-efficiency, high-reliability AC/DC conversion in consumer and industrial power supplies operating up to 150 kHz.

FAQ

What is the maximum allowable case temperature for continuous operation?

The UF3001-T has an operating junction temperature range of –65°C to +150°C. With RθJA = 35°C/W and 3.0A forward current producing ~3.0W dissipation, the case temperature must remain ≤115°C to maintain Tj ≤150°C under natural convection. Forced airflow or copper pour reduces required thermal margin.

Can UF3001-T replace UF4001 in existing designs?

Yes - both share DO-201AD package, 3.0A IO rating, and cathode-band polarity. However, UF3001-T has lower VRRM (50V vs. 50V same), identical trr (50ns), and tighter IRM spec (5µA vs. 5µA). No layout or thermal changes are needed; it is a direct functional and mechanical replacement.

Is UF3001-T suitable for use in automotive infotainment power supplies?

No - while rated for –65°C to +150°C, UF3001-T is not AEC-Q101 qualified and lacks automotive-specific reliability testing (e.g., HTOL, temperature cycling). For automotive applications, Diodes recommends AEC-Q101-certified alternatives like the B130L series.

Does the "-T" suffix indicate tape-and-reel packaging only?

Yes - "-T" denotes 1.2K units per 13-inch tape-and-reel, optimized for automated SMT placement. The "-B" variant (UF3001-B) is supplied in 500-unit bulk packaging. Both share identical electrical specs, DO-201AD package, and RoHS compliance.