Diodes Incorporated PR1503-T

Overview

PR1503-T from Diodes Incorporated is a 1.5A fast recovery rectifier diode in DO-41 package, rated for 200V peak repetitive reverse voltage (VRRM), 1.2V forward voltage at 1.5A, and 150ns reverse recovery time - optimized for high-efficiency AC/DC front-end rectification in offline power supplies and auxiliary power rails.

For engineers reviewing the PR1503-T datasheet, PR1503-T pinout, PR1503-T application, or PR1503-T equivalent, key selection criteria include VRRM derating margin, trr-dependent switching loss in flyback/foward converters, thermal resistance (R_JA = 35 K/W), and DO-41 lead-form compatibility with through-hole PCB layouts.

Technical Context

This device employs a diffused junction structure to achieve fast switching with low forward conduction loss and controlled reverse recovery behavior. Its 150ns trr (measured at I_F = 0.5A, I_R = 1.0A, I_rr = 0.25A) supports operation in 50–100 kHz SMPS topologies without excessive switching loss or EMI generation.

The 200V VRRM rating targets universal-input (85–265V_AC) secondary-side rectification and 12–24V DC input stage clamping. Thermal performance is defined by R_JA = 35 K/W under standard JEDEC test conditions (leads held at ambient 9.5mm from case).

Key Specifications

Pinout & Package

DO-41 axial-leaded plastic package with cathode band marking; leads are tin-plated, solderable per MIL-STD-202 Method 208, UL 94V-0 rated mold compound.

Key Features

Applications

Availability

PR1503-T is available at Aetrix Electronics and suitable for offline AC/DC adapters, industrial control power supplies, and LED driver input stages requiring stable component supply with DO-41 tape-and-reel packaging (5K/reel, 13-inch).

Supply support for PR1503-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 Taiwan and China.

The PR150x/S series belongs to Diodes' fast recovery rectifier product line, engineered specifically for cost-sensitive, high-volume power conversion applications where efficiency, reliability, and thermal performance are critical.

FAQ

What is the maximum allowable junction temperature for PR1503-T?

The absolute maximum junction temperature (T_j) is +150°C, as specified in the datasheet. Operation above this limit risks permanent parametric shift or catastrophic failure. Derating curves (Fig. 1) define safe I_O limits versus ambient temperature - at 75°C ambient, I_O must be reduced to ~1.1A to maintain T_j ≤ 150°C with R_JA = 35 K/W.

Is PR1503-T suitable for use in synchronous rectification circuits?

No - PR1503-T is a passive silicon PN junction diode, not a MOSFET-based synchronous rectifier. It lacks gate control, body diode optimization, or low R_DS(on) characteristics required for synchronous operation. Its 1.2V V_FM and 150ns t_rr make it appropriate only for conventional diode rectification.

How does the "-T" suffix affect the PR1503 part number?

The "-T" suffix denotes tape-and-reel packaging: 5,000 units per 13-inch reel, DO-41 package, intended for automated SMT placement (though DO-41 is axial-leaded, it is commonly used in through-hole auto-insertion). This differs from "-B" (bulk) and "-A" (ammo pack) variants, all sharing identical electrical specs.

Does PR1503-T meet automotive AEC-Q101 qualification?

No - PR1503-T is not AEC-Q101 qualified. The datasheet states "NOT RECOMMENDED FOR NEW DESIGN" and lists no automotive stress test data. It is rated for industrial temperature range (–65°C to +150°C), but lacks qualification for temperature cycling, humidity, or mechanical shock per AEC standards.