Diodes Incorporated SBRT40V100CTFP

Overview

SBRT40V100CTFP from Diodes Incorporated is a 40A dual common-cathode Trench Super Barrier Rectifier (SBR®) in ITO-220AB package, rated for 100V peak repetitive reverse voltage, with max 0.73V forward voltage at 20A/25°C and 0.65V at 20A/125°C, delivering ultra-low VF and stable <0.3mA reverse leakage at 100V/25°C - ideal for high-efficiency DC-DC converter output rectification.

For engineers reviewing the SBRT40V100CTFP datasheet, SBRT40V100CTFP pinout, SBRT40V100CTFP application, or SBRT40V100CTFP equivalent, key selection criteria include thermal resistance (RθJC = 4°C/W), high-temperature IR stability, dual-leg current sharing capability, and RoHS-compliant matte tin terminals suitable for industrial power supply designs requiring low conduction loss and thermal robustness.

Technical Context

This dual-diode SBR device uses patented trench-based super barrier technology to achieve lower forward voltage than standard Schottky diodes while maintaining superior high-temperature reverse leakage performance - critical for 12V/24V/48V DC-DC outputs where thermal runaway must be avoided. Its common-cathode configuration enables synchronous rectification replacement in center-tapped topologies.

Rated for 40A total average rectified output (20A per leg), it supports non-repetitive surge currents up to 180A (8.3ms half-sine), with junction-to-case thermal resistance of 4°C/W when mounted on specified heatsink - enabling compact, high-power-density designs without forced air cooling in ambient temperatures up to +125°C.

Key Specifications

Pinout & Package

Package: ITO-220AB - insulated plastic case with integral heatsink tab, matte tin-plated terminals, UL 94V-0 molding compound, weight ≈1.65 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current, high-temperature rectifier applications.

Compared with SBRT40V100CTFP, the CT variant offers superior thermal performance but demands isolation hardware, while the CTE variant eases manufacturing at the cost of 17% higher junction temperature rise at full load - making CTFP optimal for isolated, high-reliability industrial power where mechanical robustness and thermal margin are prioritized.

Availability

SBRT40V100CTFP is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and telecom power shelves requiring stable component supply, long-lifecycle support, and guaranteed RoHS/halogen-free compliance.

Supply support for SBRT40V100CTFP 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, manufacturing, and sales operations across Asia, Europe, and North America.

The SBR® (Super Barrier Rectifier) product line was developed specifically for high-efficiency, high-reliability power conversion in computing, telecom, and industrial applications - emphasizing low VF, high-temperature stability, and robust packaging for demanding thermal environments.

FAQ

What is the maximum junction temperature for continuous operation?

The SBRT40V100CTFP has an operating junction temperature range of –55°C to +150°C. For continuous 40A operation, thermal design must ensure TJ remains ≤150°C using the specified 80mm × 48mm × 36mm heatsink - verified per Note 6 in DS36246 Rev. 9-2. Derating curves in Figure 5 confirm 20A per leg is sustainable at TC = 100°C without exceeding TJ limit.

Is the ITO-220AB case electrically isolated from all pins?

Yes - the ITO-220AB package features full electrical isolation between the metal tab (case) and all three pins (A1, K, A2), with isolation voltage rated to 2500 V RMS per Diodes Incorporated's AP02001 specification. This enables direct mounting to grounded heatsinks without additional insulation, unlike standard TO-220AB.

How does VF temperature coefficient impact system efficiency?

Unlike conventional diodes, SBRT40V100CTFP exhibits a negative VF temperature coefficient: VF drops from 0.73V at 25°C to 0.65V at 125°C at 20A. This improves conduction efficiency under thermal stress, counteracting typical resistive losses and stabilizing power delivery in high-ambient environments like enclosed power supplies.

Can this device replace a Schottky diode in existing designs?

Yes - SBRT40V100CTFP is a drop-in replacement for 100V, 20A-per-leg Schottky diodes (e.g., SS30100CT) with identical pinout and lower VF at high current. However, its superior high-temperature IR stability eliminates thermal runaway risks inherent to Schottkys, making it safer for unventilated or high-ambient deployments without redesign.