Diodes Incorporated PDS1040CTL-13

Overview

PDS1040CTL-13 from Diodes Incorporated is a dual-die low-voltage Schottky barrier rectifier in POWERDI®5 package, rated for 40 V peak reverse voltage and 10 A total average output current (5 A per element), with max 0.50 V forward voltage at 5 A/25°C and only 200 µA reverse leakage at 40 V/25°C. It serves in ORing, polarity protection, and high-frequency DC-DC converter outputs.

For engineers reviewing the PDS1040CTL-13 datasheet, PDS1040CTL-13 pinout, PDS1040CTL-13 application, or PDS1040CTL-13 equivalent, key selection criteria include dual-element thermal coupling, low VF stability across temperature, junction-to-solder-point thermal resistance of 2.0 °C/W, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This dual Schottky rectifier integrates two independent 40 V / 5 A elements in a single POWERDI®5 thermally optimized leadframe package. Each die features guard ring construction to suppress transient-induced avalanche failure and supports 110 A non-repetitive surge current per element under 8.3 ms half-sine conditions.

Electrical behavior is characterized by strong temperature dependence: VF drops to 0.39 V at 5 A/125°C while IR rises to 25 mA at 40 V/100°C. Thermal resistance varies with PCB layout - 50 °C/W on polyimide with extended cathode pad (9.4 mm × 7.2 mm), versus 95 °C/W on standard FR-4.

Key Specifications

Pinout & Package

POWERDI®5 is a surface-mount, 5-terminal thermally enhanced package with exposed cathode paddle. Pin 1–2 are Anode 1 and Cathode 1; Pins 3–4 are Anode 2 and Cathode 2; Pin 5 is common cathode tie (shared thermal pad).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS54H-13-F and MBR1045FCT, PDS1040CTL-13 delivers superior power density via its dual-die POWERDI®5 layout, lower thermal resistance to PCB, and tighter VF consistency across temperature - critical for automotive and compact DC-DC designs.

Availability

PDS1040CTL-13 is available at Aetrix Electronics and suitable for automotive power ORing, industrial DC-DC output rectification, and USB-C polarity protection requiring stable component supply and AEC-Q101 compliance.

Supply support for PDS1040CTL-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 Europe, serving automotive, industrial, and consumer markets.

The POWERDI® rectifier product line targets high-efficiency, space-constrained power conversion with thermally optimized packages and AEC-Q101-qualified Schottky devices for automotive and industrial front-end power stages.

FAQ

What is the maximum continuous current rating per element in PDS1040CTL-13?

The device is rated for 5 A average forward current per element at TA = +25°C with appropriate PCB copper area. Derating is required above 25°C ambient: Fig. 6 shows linear reduction to ~2.5 A at +100°C on FR-4, and ~3.8 A on polyimide with optimized pad layout.

Can Pin 5 (common cathode pad) be left floating during PCB layout?

No - Pin 5 is the exposed thermal pad and mandatory electrical connection point for both cathodes. Leaving it unconnected violates thermal and electrical specifications: RθJS degrades from 2.0 to >10 °C/W, VF increases by up to 0.08 V, and surge capability falls below 110 A due to localized heating.

Is PDS1040CTL-13 suitable for use in synchronous rectifier circuits?

It functions as a self-commutating Schottky rectifier but lacks gate control; therefore, it is used in asynchronous rectification. For true synchronous rectification, an actively driven MOSFET controller is required. However, its <5 ns reverse recovery supports high-frequency (>500 kHz) flyback and LLC secondary-side applications where low VF dominates efficiency.

How does the guard ring structure improve reliability in automotive environments?

The guard ring mitigates edge breakdown during load dump or ISO 7637-2 pulse 5a transients by distributing electric field stress away from the active junction periphery. This prevents localized avalanche and thermal runaway, extending lifetime in under-hood modules exposed to repeated 100 V/100 ms surges.