Diodes Incorporated SDT40H100CTFP

Overview

SDT40H100CTFP from Diodes Incorporated is a 40A dual common-cathode trench Schottky rectifier in ITO-220AB (Type HE) package, rated for 100V reverse voltage per leg, with max 0.70V forward voltage at 20A/25°C and 120µA reverse leakage at 100V/25°C - optimized for high-efficiency DC-DC converters and automotive-grade AC-DC adapters.

For engineers reviewing the SDT40H100CTFP datasheet, SDT40H100CTFP pinout, SDT40H100CTFP application, or SDT40H100CTFP equivalent, key selection criteria include thermal resistance (4°C/W junction-to-case), soft switching behavior, high-temperature leakage stability up to +125°C, and AEC-Q101 readiness via IATF 16949 manufacturing.

Technical Context

This dual-leg Schottky rectifier uses trench MOS-based architecture to achieve low VF and minimal stored charge, enabling soft recovery with negligible reverse recovery current - critical for reducing EMI in high-frequency switching topologies. Its common-cathode configuration supports synchronous rectification or dual-output DC-DC stages.

Thermal performance is defined by a 4°C/W R_θJC (with heatsink), enabling 20A per leg continuous conduction at T_C ≤ 85°C. Leakage remains under 30µA at 100V/125°C, confirming stable operation in under-hood automotive environments.

Key Specifications

Pinout & Package

Package: ITO-220AB (Type HE) - insulated through-hole plastic package with integral heatsink tab, matte tin-plated copper leadframe, UL 94V-0 rated molding compound, and 1.90g mass. Designed for mechanical robustness and thermal reliability in automotive under-hood applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STPS40H100CG and VBSE08100C-M3/8B, SDT40H100CTFP uniquely combines ITO-220AB (Type HE) insulation, AEC-Q101 readiness, and 4°C/W thermal resistance - making it the only choice for mechanically rugged, thermally demanding, and automotive-compliant dual-leg Schottky rectification.

Availability

SDT40H100CTFP is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial AC-DC adaptors, and server VRMs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for safety-critical deployments.

Supply support for SDT40H100CTFP 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 automotive, industrial, and computing markets.

The SDT40H100CTFP belongs to Diodes' high-current trench Schottky rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in automotive and industrial applications where low VF, soft switching, and AEC-Q101 compliance are mandatory.

FAQ

What is the maximum continuous current rating per leg for SDT40H100CTFP?

The SDT40H100CTFP is rated for 20A average rectified output current per leg at T_C = +25°C with adequate heatsinking. Derating is required above 25°C case temperature per Figure 4 in DS38959 Rev. 7–2; at T_C = +85°C, the per-leg rating drops to approximately 12.5A to maintain junction temperature ≤ +150°C.

Is SDT40H100CTFP qualified to AEC-Q101?

SDT40H100CTFP is manufactured in an IATF 16949-certified facility and supports PPAP documentation. While not pre-qualified as a standard AEC-Q101 part, Diodes states it is suitable for automotive applications requiring specific change control and can be qualified per customer AEC-Q101 test plans upon request - confirmed in Note on page 1 of DS38959.

How does the ITO-220AB (Type HE) package differ from standard TO-220AB?

The ITO-220AB (Type HE) features enhanced insulation between the metal tab and internal cathode structure, allowing direct mounting to grounded heatsinks without electrical isolation hardware. Its dimensions (e.g., A = 4.70mm, L1 = 3.23mm) and thermal resistance (4°C/W) are optimized for higher power density and improved mechanical stability versus generic TO-220AB.

Can SDT40H100CTFP replace SDT40H100CT in existing designs?

Yes - SDT40H100CTFP is a direct form-fit-function replacement for SDT40H100CT, sharing identical electrical specs and pinout. The "FP" suffix denotes ITO-220AB (Type HE) packaging with improved insulation and thermal performance over the generic TO-220AB used in SDT40H100CT, enabling higher reliability in thermally stressed applications.