Diodes Incorporated SBR40100CTFP

Overview

SBR40100CTFP from Diodes Incorporated is a 40A dual common-cathode Super Barrier Rectifier in ITO-220AB package, rated for 100V peak reverse voltage, with 0.73V typical forward voltage at 20A/125°C and 280A non-repetitive surge capability. It serves as a high-efficiency output rectifier in AC/DC power supplies and DC/DC converters for industrial and telecom infrastructure.

For engineers reviewing the SBR40100CTFP datasheet, SBR40100CTFP pinout, SBR40100CTFP application, or SBR40100CTFP equivalent, key selection criteria include thermal resistance (4°C/W junction-to-case), high-temperature leakage stability (10mA max at 125°C), soft-switching behavior, and RoHS-compliant green packaging with halogen/antimony-free molding compound.

Technical Context

This dual-diode rectifier integrates two independent 20A-rated SBR elements sharing a common cathode terminal, enabling synchronous half-wave rectification in center-tapped transformer topologies or parallel-output configurations. Its patented Super Barrier structure replaces traditional PN junctions with low-barrier metal-semiconductor interfaces to reduce forward conduction loss while maintaining fast, soft recovery characteristics.

The ITO-220AB package features electrically isolated tab (2000VAC isolation), matte tin-plated copper leadframe, and UL 94V-0 molded plastic housing - optimized for forced-air or heatsink-mounted operation in high-power density designs where thermal management and creepage/clearance compliance are critical.

Key Specifications

Pinout & Package

Package: ITO-220AB - Electrically isolated metal tab (2000VAC isolation), 3-terminal configuration with common cathode (pin 3), anode 1 (pin 1), and anode 2 (pin 2). Molded plastic body meets UL 94V-0 flammability standard.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current Super Barrier Rectifier applications.

Compared with STPS40H100CG and VB40100C-G, SBR40100CTFP delivers the lowest VF at elevated temperature in the ITO-220AB form factor, making it optimal for thermally constrained, high-frequency power supplies requiring minimal conduction loss and regulatory-compliant packaging.

Availability

SBR40100CTFP is available at Aetrix Electronics and suitable for server power supplies, industrial motor drives, telecom rectifier modules, and EV on-board chargers requiring stable component supply and long-term lifecycle support.

Supply support for SBR40100CTFP 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 and manufacturing operations across Asia and the Americas.

SBR40100CTFP belongs to Diodes' Super Barrier Rectifier (SBR®) product line, engineered specifically for high-efficiency, high-reliability AC/DC and DC/DC power conversion in industrial, computing, and communications equipment.

FAQ

Is SBR40100CTFP pin-compatible with standard TO-220AB dual diodes?

No - SBR40100CTFP uses the ITO-220AB package, which has an electrically isolated tab and different mechanical dimensions than TO-220AB. Pin 3 is the common cathode tab, not a leaded terminal. PCB footprints and heatsink mounting must follow ITO-220AB specifications (DS30988, page 4), not generic TO-220AB layouts.

What is the maximum recommended case temperature for continuous operation?

The absolute maximum case temperature is 175°C, but continuous operation should be limited to TC ≤ 100°C to maintain IO = 20A per leg. Derating curves (Figure 3, DS30988) show usable current drops to ~12A at TC = 125°C and ~6A at TC = 150°C - design margins must account for thermal interface resistance and ambient airflow.

Does SBR40100CTFP require a thermal pad or insulator when mounted to a heatsink?

No - the ITO-220AB package provides 2000VAC isolation between the metal tab (pin 3) and internal die. Direct metal-to-metal mounting is permitted and recommended to achieve the specified 4°C/W RθJC. Use only non-conductive thermal paste if electrical isolation from the heatsink is required for system safety grounds.

How does the SBR technology differ from Schottky and Fast Recovery diodes?

SBR combines low forward voltage like Schottky diodes (VF ≈ 0.7V) with reverse voltage capability and temperature stability closer to fast recovery diodes (100V rating, 10mA IR at 125°C). Unlike Schottky, it avoids catastrophic thermal runaway; unlike FRDs, it eliminates hard reverse recovery spikes - confirmed by measured trr <30ns and soft recovery waveforms in application notes AN-4001 and AN-4002.