Diodes Incorporated SBR20A100CTFP

Overview

SBR20A100CTFP from Diodes Incorporated is a 20A dual common-cathode Super Barrier Rectifier rated for 100V peak reverse voltage, with typical forward voltage of 0.64V at 10A/125°C and leakage current ≤0.1mA at 100V/25°C, used in high-efficiency AC-DC front-end rectification and DC-DC secondary-side synchronous replacement in telecom power supplies.

For engineers reviewing the SBR20A100CTFP datasheet, SBR20A100CTFP pinout, SBR20A100CTFP application, or SBR20A100CTFP equivalent, key selection criteria include thermal resistance (4°C/W junction-to-case), soft-switching behavior for EMI reduction, high-temperature leakage stability up to 175°C, and ITO-220AB package isolation rating (2000VAC).

Technical Context

This device integrates two independent 10A-rated rectifying elements in a single ITO-220AB package with common cathode configuration, enabling dual-output or parallel-current-path designs. Its patented super barrier structure replaces Schottky architecture to achieve lower VF than standard silicon diodes while maintaining higher temperature stability than conventional Schottkys.

The rectifier operates across –65°C to +175°C junction temperature range and supports non-repetitive surge currents up to 250A (8.3ms half-sine), making it suitable for transient-heavy industrial power inputs. Isolation voltage of 2000VAC (terminal-to-heatsink) enables direct mounting to grounded heatsinks without insulation pads.

Key Specifications

Pinout & Package

Package: ITO-220AB - Insulated thermoplastic case with integral heatsink tab, UL 94V-0 rated, matte tin-plated copper leadframe, 1.65g mass.

Key Features

Applications

Equivalent & Alternatives

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

Compared with V20100C-E3/45 and MUR2010CT, SBR20A100CTFP uniquely balances low VF, verified 175°C operation, and certified 2000VAC isolation-making it optimal for compact, high-reliability, thermally constrained power systems requiring direct heatsink mounting.

Availability

SBR20A100CTFP is available at Aetrix Electronics and suitable for telecom power supplies, industrial DC-DC converters, motor drive inverters, and outdoor LED drivers requiring stable component supply across multi-year production cycles.

Supply support for SBR20A100CTFP 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 centers across Asia and manufacturing in China, Taiwan, and the U.S.

The SBR® Super Barrier Rectifier product line targets high-efficiency power conversion where Schottky limitations (leakage, temperature drift) and standard PN diode losses are unacceptable-especially in 48V telecom, server PSUs, and industrial motor controls.

FAQ

What is the difference between SBR20A100CTFP and SBR20A100CT?

The SBR20A100CTFP uses the ITO-220AB package with insulated tab and 2000VAC terminal-to-heatsink isolation, while SBR20A100CT uses standard TO-220AB without isolation. Both share identical electrical specs, but CTFP enables direct grounded heatsink mounting without insulators, reducing thermal interface resistance and assembly cost.

Can SBR20A100CTFP replace a standard 20A Schottky diode in existing designs?

Yes-pin-compatible with common-cathode dual Schottkys in ITO-220AB footprint. However, verify layout clearance for 2000VAC isolation and confirm that the lower VF (0.64V vs. typical 0.75V) does not cause control-loop instability in voltage-mode regulated supplies due to reduced feedback signal amplitude.

What is the maximum allowable case temperature for continuous 20A operation?

At 20A total (10A per leg), power dissipation is ~6.4W (0.64V × 10A × 2). With RθJC = 4°C/W, this yields 25.6°C rise above heatsink temperature. For 100°C heatsink, case reaches 125.6°C-within the –65°C to +175°C rating. Derating per Fig. 3 confirms 20A is valid up to TC = 80°C.

Does SBR20A100CTFP require a heatsink in all applications?

Yes-its 4°C/W RθJC and 25W max power dissipation necessitate heatsinking for any sustained current >2A. Natural convection heatsinks ≥150cm² are sufficient for 10A operation at 25°C ambient; forced air or larger extrusions are required for 20A continuous use or elevated ambient temperatures.