Diodes Incorporated G30H120CTFW

Overview

G30H120CTFW from Diodes Incorporated is a Trench Schottky rectifier rated for 120 V reverse voltage and 30 A average forward current at Tc = 85°C, featuring low VF (0.67 V @ 15 A, 25°C), negligible switching losses, and AEC-Q101 qualification for automotive-grade reliability-used in high-frequency DC-DC converters and on-board inverters.

For engineers reviewing the G30H120CTFW datasheet, G30H120CTFW pinout, G30H120CTFW application, or G30H120CTFW equivalent, key selection criteria include junction temperature capability up to +175°C, thermal resistance RthJC = 4°C/W, leakage current ≤5 mA @ 125°C, and TO-220ABFP package compatibility with standard heatsinking layouts.

Technical Context

This device employs a trench-based Schottky architecture to minimize forward voltage drop while maintaining controlled reverse leakage-enabling high-efficiency operation in high-frequency switching topologies. Its 1000 pF junction capacitance at 4 V reverse bias supports fast recovery behavior without minority-carrier storage delay.

The ITO-220(S)AB package integrates a copper leadframe and green molding compound (UL 94V-0, halogen/antimony-free), delivering robust thermal conduction (RthJL = 5°C/W) and mechanical stability under automotive thermal cycling stress per AEC-Q101 Rev. D.

Key Specifications

Pinout & Package

Package: ITO-220(S)AB (JEDEC TO-220ABFP variant with insulated tab and surface-mount compatible footprint).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with VS-30CPH12 and MBR30H120CT, G30H120CTFW delivers lower VF, AEC-Q101 qualification, and optimized thermal performance in the space-constrained ITO-220(S)AB package-making it the preferred choice for automotive-grade, high-efficiency DC-DC conversion where footprint and reliability are jointly constrained.

Availability

G30H120CTFW is available at Aetrix Electronics and suitable for on-board DC-DC converters, high-frequency inverters, and automotive LED drivers requiring stable component supply across production lifecycles.

Supply support for G30H120CTFW 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, specializing in high-reliability power management and signal integrity solutions for automotive, industrial, and computing markets.

G30H120CTFW belongs to Diodes' AEC-Q101-qualified Trench Schottky rectifier product line, engineered specifically for high-efficiency, high-temperature operation in automotive power conversion and industrial SMPS applications.

FAQ

Is G30H120CTFW suitable for synchronous rectification?

No-G30H120CTFW is a passive Schottky rectifier, not a MOSFET-based synchronous rectifier controller or driver. It operates as a unidirectional, self-commutating device with no gate control. For synchronous rectification, discrete MOSFETs or dedicated SR controllers (e.g., APW7200, LM5122) must be used in conjunction with appropriate gate drive timing.

What is the maximum allowable case temperature during continuous operation?

The datasheet specifies IAV = 30 A at Tc = 85°C. Derating curves show usable current down to 0 A at Tc = 175°C. For continuous 30 A operation, case temperature must be held at or below 85°C via heatsinking; exceeding this requires proportional current reduction per Figure 1.

Does the insulated tab require electrical isolation from the heatsink?

Yes-the ITO-220(S)AB package features an electrically insulated tab. While the tab is internally connected to the cathode, its insulation layer (typically ceramic or polymer) prevents shorting to grounded heatsinks. Mounting requires non-conductive thermal interface material unless intentional cathode-to-chassis connection is part of the circuit design.

Can G30H120CTFW replace standard silicon PN rectifiers in existing designs?

Yes-with verification of voltage margin and thermal layout. Its 120 V VRRM matches common 100 V PN rectifiers, but its lower VF reduces conduction loss and heat generation. However, higher IR at elevated temperature may affect light-load regulation in some topologies; layout parasitics and EMI filtering should also be re-evaluated due to faster switching edges.