Diodes Incorporated PR3003G-T

Overview

PR3003G-T from Diodes Incorporated is a 3.0A, 200V fast recovery glass passivated rectifier diode in DO-201AD package, optimized for high-efficiency AC/DC conversion in offline power supplies and DC-DC front-ends, with 1.3V forward voltage at 3.0A, 150ns reverse recovery time, and 125A non-repetitive surge rating.

For engineers reviewing the PR3003G-T datasheet, PR3003G-T pinout, PR3003G-T application, or PR3003G-T equivalent, key selection criteria include peak repetitive reverse voltage (200V), average rectified current (3.0A @ 55°C), thermal resistance (32°C/W), and fast recovery performance for switching power supply flyback and boost stages.

Technical Context

This device operates as a unidirectional power rectifier in single-phase half-wave configurations, supporting resistive, inductive, or capacitive loads (with 20% current derating for capacitive). Its glass passivated junction ensures stable reverse leakage (<5.0μA at 25°C) and robust surge tolerance up to 125A (8.3ms half-sine).

The 150ns reverse recovery time (measured at IF=0.5A, IR=1A, Irr=0.25A) enables efficient operation in 20–100kHz SMPS topologies. Thermal design is constrained by RθJA = 32°C/W, requiring heatsinking or PCB copper area when operating near IO max at elevated ambient temperatures.

Key Specifications

Pinout & Package

DO-201AD axial-leaded plastic package with cathode band marking; lead finish is matte tin, solderable per MIL-STD-202 Method 208; polarity identified by cathode band; weight ≈1.12 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PR3003G-T, STTH3L02S offers better thermal performance at the cost of size and speed, while MUR320 delivers faster recovery and lower conduction loss but with increased reverse leakage-selection depends on whether thermal headroom, layout density, or efficiency dominates the design constraint.

Availability

PR3003G-T is available at Aetrix Electronics and suitable for AC/DC adapters, industrial DC power supplies, LED drivers, and automotive auxiliary modules requiring stable component supply with tape-and-reel packaging (1.2K/reel, 13-inch).

Supply support for PR3003G-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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

PR3003G-T belongs to the PR300xG fast recovery rectifier product line, engineered for cost-sensitive, high-volume AC/DC front-end applications where robust surge handling and consistent forward voltage are essential.

FAQ

Is PR3003G-T RoHS compliant and lead-free?

Yes, PR3003G-T features matte tin-plated leads and complies with RoHS Directive 2011/65/EU (Revision 13.2.2003), including exemptions for glass and high-temperature solder. It meets J-STD-020C moisture sensitivity Level 1 and is compatible with standard lead-free reflow profiles.

What is the maximum ambient temperature for full 3.0A operation?

PR3003G-T delivers its full 3.0A average forward current only when leads are maintained at ambient temperature at a distance of 9.5mm from the case, per datasheet Note 1. At TA = 55°C, full rating applies; above that, current must be linearly derated-e.g., ~2.2A at 85°C ambient using Fig. 1 derating curve.

Can PR3003G-T replace PR3002G or PR3004G in existing designs?

No direct substitution is recommended without circuit review: PR3002G has 100V VRRM and PR3004G has 400V VRRM, while PR3003G-T is rated for 200V. Using it in a 400V design risks avalanche failure; using it in a 100V design adds unnecessary voltage margin but may increase cost and capacitance (CT = 50pF).

Does PR3003G-T require a heatsink in typical applications?

A dedicated heatsink is not required for PR3003G-T in most applications, but thermal design must account for RθJA = 32°C/W. For sustained 3.0A operation at TA ≥ 50°C, ≥4 cm² of 2-oz copper pour connected to both leads is recommended to limit junction temperature below 150°C per datasheet limits.