Diodes Incorporated SDT30120CTFP

Overview

SDT30120CTFP from Diodes Incorporated is a 30A dual-leg trench Schottky rectifier in ITO220AB package, rated for 120V reverse voltage per leg, with max 0.93V forward drop at 15A/25°C and 100µA leakage at 120V/25°C. It serves as a high-efficiency freewheel or blocking diode in DC-DC converters and AC-DC adapters operating under high-temperature conditions.

For engineers reviewing the SDT30120CTFP datasheet, SDT30120CTFP pinout, SDT30120CTFP application, or SDT30120CTFP equivalent, key selection criteria include thermal resistance (4°C/W junction-to-case), soft fast switching behavior, low VF stability up to +150°C, and RoHS-compliant, halogen-free construction suitable for automotive-grade power conversion designs.

Technical Context

This dual common-cathode Schottky rectifier integrates two independent 15A legs sharing one cathode terminal, enabling synchronous rectification or dual-output DC-DC topologies. Its trench MOS structure delivers lower VF than planar Schottkys while maintaining tight IR control across temperature.

Designed for operation up to +150°C junction temperature, it exhibits <20µA leakage at 120V and +125°C, and maintains <0.73V VF at 15A/125°C - critical for thermally constrained industrial and automotive power supplies where conduction loss and thermal runaway must be minimized.

Key Specifications

Pinout & Package

Package: ITO220AB - Insulated TO-220 variant with electrically isolated tab, 1.90g mass, UL 94V-0 molded plastic body, matte tin-plated copper leadframe.

Key Features

Applications

Availability

SDT30120CTFP is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and automotive body control modules requiring stable component supply, long-lifecycle support, and AEC-Q200-aligned manufacturing traceability.

Supply support for SDT30120CTFP 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 SDT30120CTFP belongs to Diodes' Trench Schottky Rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in automotive, industrial, and computing applications where low VF and stable IR are critical.

FAQ

What is the difference between SDT30120CT and SDT30120CTFP?

The SDT30120CT uses the standard TO220AB package with an electrically conductive tab, while SDT30120CTFP uses the ITO220AB package with an insulated tab. This insulation eliminates the need for mounting hardware isolation washers in grounded-chassis applications, simplifying thermal design and improving safety compliance in industrial and automotive systems.

Is SDT30120CTFP qualified for automotive use?

SDT30120CTFP is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-qualified to AEC-Q101 out-of-box, Diodes offers automotive change control and qualification support upon request - including temperature cycling, HTRB, and ESD testing - for programs targeting AEC-Q200-compliant power subsystems.

Can SDT30120CTFP replace a single 30A Schottky like SB30120?

No - SDT30120CTFP is a dual 15A common-cathode device, not a single 30A diode. It cannot substitute for a monolithic 30A part in single-output configurations. However, it replaces two discrete 15A Schottkys (e.g., SDT15120CT) with reduced footprint, shared cathode routing, and matched thermal performance across both legs.

What is the maximum recommended case temperature for continuous operation?

The maximum continuous case temperature is +110°C, derived from the 15A per-leg rating at TC = +110°C (per Figure 4). Exceeding this temperature requires current derating: at TC = +125°C, IO drops to ~12.5A/leg; at TC = +150°C, it falls to ~7.5A/leg to maintain reliability and avoid thermal runaway.