Diodes Incorporated G30H100CTFW

Overview

G30H100CTFW from Diodes Incorporated is a Trench Schottky rectifier rated for 100 V reverse voltage and 30 A average forward current at Tc = 70°C, featuring low forward voltage (0.65 V @ 15 A, 25°C), negligible switching losses, and AEC-Q101 qualification for automotive-grade reliability. It is used in high-frequency on-board DC-DC converters where thermal efficiency and fast recovery are critical.

For engineers reviewing the G30H100CTFW datasheet, G30H100CTFW pinout, G30H100CTFW application, or G30H100CTFW equivalent, key selection criteria include junction temperature range (–55°C to +175°C), thermal resistance (RthJC = 5°C/W), leakage current (5 mA @ 100 V, 125°C), and TO-220ABFP package compatibility with heatsink mounting.

Technical Context

This device employs trench-based Schottky architecture to minimize forward voltage drop while maintaining controlled reverse leakage-achieving 0.65 V typ. at 15 A and 25°C, rising to 0.79 V at 125°C. Its 1060 pF junction capacitance at 4 V DC and 1 MHz supports high-frequency operation up to several hundred kHz.

The ITO-220(S)AB package enables direct copper heatsink mounting (200 mm × 200 mm × 5 mm), delivering RthJL = 3°C/W and RthJC = 5°C/W. With 280 A non-repetitive surge rating (8.3 ms half-sine), it withstands transient overloads common in switch-mode power supplies.

Key Specifications

Pinout & Package

Package: ITO-220(S)AB (JEDEC TO-220ABFP variant with insulated tab), green molding compound (UL 94V-0, halogen/antimony-free), lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STPS30H100CG-TR and VS-30CPH01-M3, G30H100CTFW uniquely combines AEC-Q101 qualification, insulated-tab packaging, and best-in-class VF at 25°C-making it optimal for space-constrained, thermally demanding automotive DC-DC systems requiring zero external insulation.

Availability

G30H100CTFW is available at Aetrix Electronics and suitable for on-board DC-DC converters, high-frequency inverters, and automotive USB-C PD adapters requiring stable component supply across extended temperature and lifecycle demands.

Supply support for G30H100CTFW 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.

G30H100CTFW belongs to Diodes' Trench Schottky Rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive and industrial switch-mode power supplies.

FAQ

Is G30H100CTFW suitable for synchronous rectification circuits?

No-it is a passive Schottky rectifier, not a synchronous rectifier controller or MOSFET driver. It functions as a unidirectional power diode and cannot replace active gate-driven MOSFETs in synchronous topology. Its role is limited to freewheeling or output rectification where zero-voltage switching is not required.

What is the maximum recommended case temperature for continuous operation?

The datasheet specifies 30 A average forward current at Tc = 70°C. Derating curves show usable current down to 0 A at Tc = 175°C. For reliable long-term operation, Diodes recommends limiting case temperature to ≤135°C to maintain junction temperature below 175°C with margin, especially under surge or transient load conditions.

Does the insulated tab require thermal interface material when mounted to a heatsink?

Yes-despite electrical insulation, the tab's thermal path relies on intimate metal-to-metal contact. Use thermally conductive but electrically insulating materials (e.g., ceramic pads or silicone-based TIMs rated ≥200°C) to ensure RthJC remains near the specified 5°C/W. Dry mounting or adhesive-only attachment degrades thermal performance significantly.

Can G30H100CTFW replace a standard silicon PN rectifier in an existing 100 V design?

Yes-with verification of reverse voltage margin and thermal layout. Its 100 V VRRM matches typical 1N5408-class parts, but its lower VF reduces conduction loss and heat generation. However, its higher junction capacitance (1060 pF vs. ~20 pF for PN diodes) may increase displacement current in high-dV/dt circuits; layout and snubbing must be re-evaluated.