Diodes Incorporated SDT20100GCT

Overview

SDT20100GCT from Diodes Incorporated is a 20A dual common-cathode Trench Schottky rectifier with 100V reverse voltage rating, 0.72V max forward voltage at 10A/25°C, 30µA max reverse leakage at 100V/25°C, and TO220AB package. It serves as a high-efficiency freewheel or output rectifier in DC-DC converters and AC-DC adapters operating under high-temperature conditions.

For engineers reviewing the SDT20100GCT datasheet, SDT20100GCT pinout, SDT20100GCT application, or SDT20100GCT equivalent, key selection criteria include its low VF stability up to +150°C junction temperature, soft fast switching behavior, and thermal resistance of 2°C/W (junction-to-case) with heatsink - critical for power supply efficiency and reliability validation.

Technical Context

This dual-leg Schottky rectifier integrates two independent 10A-rated anode terminals sharing a common cathode (Pin 3), enabling synchronous or interleaved rectification topologies. Its Trench process delivers lower forward voltage than planar Schottkys while maintaining tight IR control across temperature.

The device operates within -55°C to +150°C junction range and exhibits soft reverse recovery with minimal ringing in hard-switched converters. Thermal resistance RθJC = 2°C/W (TO220AB) enables 20A total conduction with appropriate heatsinking, while derating curves confirm usable current down to 12A at TC = 100°C.

Key Specifications

Pinout & Package

Package: TO220AB (Generic), molded plastic, UL 94V-0 rated, matte tin-plated copper leadframe. Mounting tab (Pin 3) is cathode and electrically connected to case.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH06-M3 and MBR20100CT, SDT20100GCT uniquely balances 100V rating, 0.72V VF, and 2°C/W RθJC in TO220AB - delivering optimal thermal efficiency for 48V–60V industrial and automotive power rails without footprint change.

Availability

SDT20100GCT is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and automotive body control module power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q101-aligned manufacturing traceability.

Supply support for SDT20100GCT 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, automotive, and computing markets.

SDT20100GCT belongs to Diodes' Trench Schottky Rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in space-constrained and thermally demanding applications.

FAQ

What is the maximum continuous current rating per anode on SDT20100GCT?

The SDT20100GCT is rated for 10A average forward current per anode (Pin 1 or Pin 2) at TA = +25°C with adequate heatsinking. Total device current is 20A when both legs operate simultaneously. Derating is required above +25°C ambient, with 12A usable at TC = 100°C per the published derating curve.

Is SDT20100GCT qualified for automotive applications?

SDT20100GCT is manufactured in an IATF 16949-certified facility and supports PPAP documentation. While not pre-qualified to AEC-Q101 in this specific part number, Diodes offers AEC-Q101-compliant variants (e.g., SDT20100GCTQ) with full stress test reports - contact Aetrix for qualified automotive-grade versions.

How does the common-cathode configuration affect PCB layout?

The common-cathode (Pin 3/tab) configuration allows both anodes to feed separate power domains while sharing one return path, reducing trace count and enabling compact dual-rail designs. The metal tab must be electrically isolated from chassis unless intentionally grounded, and thermal vias under the tab improve heat transfer to internal copper planes.

Can SDT20100GCT replace MBR20100CT in existing designs?

Yes - SDT20100GCT uses the same TO220AB package, pinout, and mounting hole pattern as MBR20100CT. With 0.1V lower VF and improved high-temperature leakage, it provides measurable efficiency gain without layout changes. Verify thermal margin using the lower RθJC (2°C/W vs. 2.2°C/W) in your heatsink model.