Diodes Incorporated PDS1040L-13

Overview

PDS1040L-13 from Diodes Incorporated is a 40V, 10A low-forward-voltage Schottky barrier rectifier in POWERDI®5 package, featuring 0.41V typical VF at 6A/25°C and 275A non-repetitive surge capability; used for polarity protection and freewheeling in DC-DC converters and automotive body control modules.

For engineers reviewing the PDS1040L-13 datasheet, PDS1040L-13 pinout, PDS1040L-13 application, or PDS1040L-13 equivalent, key selection criteria include forward voltage at high temperature, thermal resistance under PCB layout variations, reverse leakage at 100°C, AEC-Q101 qualification status, and POWERDI®5 solderability per MIL-STD-202.

Technical Context

This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche breakdown and sustain 40V peak repetitive reverse voltage. Its low VF stems from optimized metal-semiconductor junction design, enabling high-efficiency operation below 5V output rails.

Thermal performance depends critically on PCB copper mass and pad geometry: RθJA ranges from 50°C/W (large cathode/anode pads) to 85°C/W (minimum R-4 layout), with RθJS fixed at 1.5°C/W to soldering point.

Key Specifications

Pinout & Package

POWERDI®5 is a surface-mount, single-diode package with exposed cathode thermal pad and two gull-wing leads: anode (pin 1) and cathode (pin 2). Molded green compound meets UL 94V-0; terminals are matte tin annealed over copper leadframe.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB1040-TB and SS1040H, PDS1040L-13 uniquely combines AEC-Q101 qualification, 150°C junction rating at reduced voltage, and lowest VF in POWERDI®5 footprint-making it optimal for space-constrained, high-reliability automotive power rails.

Availability

PDS1040L-13 is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery systems, industrial DC-DC converters, and LED driver polarity protection requiring stable component supply and AEC-Q101 compliance.

Supply support for PDS1040L-13 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 the U.S.

The PDS1040L belongs to Diodes' AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive and industrial environments.

FAQ

What is the maximum operating junction temperature for PDS1040L-13 under 50% VRRM bias?

The device is rated for TJ = -65°C to +150°C when VR ≤ 50% VRRM (i.e., ≤20V DC reverse bias). This extended range supports operation in under-hood automotive locations where ambient temperatures exceed 105°C, provided thermal design maintains junction temperature within limits using appropriate PCB copper area.

How does the POWERDI®5 package compare thermally to SMA or SMPC packages at 10A load?

With optimized 9.4mm × 7.2mm cathode pad, POWERDI®5 achieves RθJA = 50°C/W-superior to SMA (≈100°C/W) and comparable to SMPC (≈45–55°C/W). Its low RθJS = 1.5°C/W enables efficient heat transfer directly from die to PCB, making it more effective than leaded packages for high-current SMT power rectification.

Is PDS1040L-13 suitable for synchronous rectification replacement in a 5V/10A buck converter?

No-it is a unidirectional Schottky rectifier, not a MOSFET-based synchronous rectifier. While its low VF reduces conduction loss, it lacks gate control and cannot replace a controlled switch. It functions only as a passive freewheeling or clamp device, not as an actively driven synchronous element.

Does the "Green" designation affect soldering profile or reliability?

Yes-the halogen- and antimony-free molding compound complies with JEDEC J-STD-020 Level 1 moisture sensitivity and supports standard lead-free reflow profiles (peak 260°C). No special baking or handling is required, and long-term reliability testing shows no degradation in thermal cycling or high-temperature storage versus halogenated equivalents.