Diodes Incorporated PR1505G-T

Overview

PR1505G-T from Diodes Incorporated is a 1.5A fast recovery glass passivated rectifier diode with 600V peak repetitive reverse voltage, 1.3V forward voltage at 1.5A, and 150ns reverse recovery time, used in AC/DC input stage rectification for industrial power supplies and LED drivers.

For engineers reviewing the PR1505G-T datasheet, PR1505G-T pinout, PR1505G-T application, or PR1505G-T equivalent, key selection criteria include VRRM=600V, IO=1.5A@55°C, trr=150ns, low IRM=5.0μA@25°C, and DO-15 package thermal resistance RθJA=65°C/W.

Technical Context

This device operates as a single-phase, half-wave rectifier under 60Hz resistive or inductive loads, with derating required for capacitive loads (−20% current). Its glass passivated die construction ensures stable performance across −65°C to +150°C operating range.

The 150ns reverse recovery time enables efficient high-frequency switching in offline SMPS front-ends, while the 50A non-repetitive surge rating supports transient line-event robustness without external snubbing.

Key Specifications

Pinout & Package

PR1505G-T uses the DO-15 molded plastic package (UL 94V-0), with axial leads and cathode band marking. Polarity is unambiguous: banded end = cathode.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PR1505G-T, STTH1L06U and MUR160 offer faster recovery but sacrifice 33% average current capacity and surge robustness-making PR1505G-T preferable for cost-sensitive, thermally demanding industrial rectification where 1.5A continuous conduction is mandatory.

Availability

PR1505G-T is available at Aetrix Electronics and suitable for industrial power supplies, LED drivers, and appliance AC/DC conversion requiring stable component supply and long-term manufacturability.

Supply support for PR1505G-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 and signal integrity solutions.

PR1505G-T belongs to the PR150xG/S fast recovery rectifier family, engineered for cost-effective, thermally robust AC/DC front-end rectification in industrial and consumer power systems.

FAQ

Is PR1505G-T suitable for use in automotive applications?

No. PR1505G-T is not AEC-Q101 qualified and lacks automotive-grade screening, temperature cycling validation, or PPAP documentation. It is rated for industrial and commercial environments only, with no guaranteed performance under automotive vibration, extended temperature extremes, or stringent failure-rate requirements.

What is the maximum allowable PCB trace width for PR1505G-T anode and cathode pads?

For 1.5A continuous operation at 55°C ambient, minimum recommended copper trace width is 1.5mm (1 oz Cu, external layer) with ≥10mm length to minimize resistive heating. Thermal relief spokes must be minimized or eliminated on cathode pad to maintain RθJA ≤65°C/W.

Can PR1505G-T replace PR1505GS-T in a DO-41 footprint?

No. PR1505G-T uses DO-15 (larger body, longer leads), while PR1505GS-T uses DO-41. Mechanical dimensions differ significantly: DO-15 width is 5.5–7.62mm vs. DO-41's 4.06–5.21mm. Direct substitution would cause solder joint stress, misalignment, and insufficient creepage clearance.

Does PR1505G-T require a heatsink in typical operation?

Not under standard conditions: at 1.5A and 55°C ambient, junction temperature rise is ~97.5°C (1.3V × 1.5A × 65°C/W), resulting in Tj ≈ 152.5°C-exceeding absolute max (150°C). Derating to 1.3A or adding minimal copper pour (≥250mm²) is required for reliable operation without a heatsink.