Diodes Incorporated SBR30A100CTFP

Overview

SBR30A100CTFP from Diodes Incorporated is a 100 V, 30 A total (15 A per leg) dual common-cathode Super Barrier Rectifier in ITO-220AB package, featuring 0.8 V max forward voltage at 15 A and 0.1 mA max reverse leakage at 100 V/25°C. It delivers rugged avalanche capability (550 mJ), low thermal resistance (4 °C/W junction-to-case), and stable high-temperature operation up to +175°C - deployed as freewheel and output rectifier in high-efficiency DC-DC converters.

For engineers reviewing the SBR30A100CTFP datasheet, SBR30A100CTFP pinout, SBR30A100CTFP application, or SBR30A100CTFP equivalent, key selection criteria include its dual-leg current rating, ultra-low VF stability across temperature, isolation voltage (2,000 VAC), and ITO-220AB heatsink-mountable mechanical form factor for industrial power supply designs.

Technical Context

This dual-diode rectifier integrates patented SBR® technology to achieve Schottky-like forward voltage with significantly enhanced avalanche ruggedness - enabling reliable operation under repetitive surge conditions (IFSM = 250 A) without thermal runaway. Its structure supports common-cathode configuration for synchronous rectification or dual-output DC-DC topologies.

Electrical behavior is characterized by tightly controlled VF drift (0.63–0.67 V typ. at 15 A from 25°C to 125°C) and IR suppression (<10 µA at 100 V/125°C), validated across -65°C to +175°C operating range. The ITO-220AB package provides electrical isolation between terminals and heatsink, critical for floating-ground or high-side switching applications.

Key Specifications

Pinout & Package

Package: ITO-220AB - Insulated TO-220 variant with electrically isolated tab (heatsink mountable), matte tin-plated copper leadframe, UL 94V-0 molded plastic body, and 1.65 g mass.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBRT30A100CTFP and MBR30H100CTFP, the SBR30A100CTFP uniquely balances ultra-low VF, high-temperature leakage control, and certified isolation - making it the sole option for safety-isolated, thermally demanding DC-DC and AC-DC systems.

Availability

SBR30A100CTFP is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and industrial motor drives requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for SBR30A100CTFP 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.

The SBR® product line was developed specifically for high-efficiency, high-reliability power conversion - targeting applications where Schottky limitations (avalanche fragility, high-temperature leakage) compromise system robustness.

FAQ

What is the difference between SBR30A100CTFP and SBR30A100CT?

The SBR30A100CTFP uses the ITO-220AB package with electrically isolated tab (2,000 VAC isolation), while the SBR30A100CT uses standard TO-220AB without isolation. Both share identical electrical specs, but only the CTFP variant supports reinforced insulation in AC-DC adapters and floating-ground topologies.

Can SBR30A100CTFP replace a standard Schottky rectifier in existing designs?

Yes - it is footprint-compatible with TO-220AB/ITO-220AB Schottkys and offers lower VF and superior thermal stability. However, verify layout clearance for 2,000 VAC isolation if using the heatsink as a ground plane, and confirm avalanche energy margins exceed legacy part ratings.

What is the maximum continuous power dissipation at 85°C ambient?

With a 4 °C/W RθJC and assuming 25°C heatsink temperature rise above ambient, maximum continuous power is 75 W (calculated as (175°C − 85°C) / 4 °C/W). Derating curves in Figure 4 confirm 22 A total IO at 85°C ambient with proper heatsinking.

Does SBR30A100CTFP require derating for capacitive loads?

Yes - per datasheet Note, average forward current must be reduced by 20% when used with capacitive loads due to high inrush current stress. For a 30 A rated device, this means limiting continuous IO to 24 A in capacitor-input filter applications.