Diodes Incorporated G20H100CTW

Overview

G20H100CTW from Diodes Incorporated is a Trench Schottky rectifier rated for 100 V reverse voltage and 20 A average forward current at TC = 120°C, featuring low VF (0.61 V typ @ 10 A, 25°C), negligible switching losses, and AEC-Q101 qualified reliability-used in high-frequency DC-DC converters and onboard switch-mode power adapters.

For engineers reviewing the G20H100CTW datasheet, G20H100CTW pinout, G20H100CTW application, or G20H100CTW equivalent, key selection criteria include junction temperature capability (–55°C to +175°C), thermal resistance (RthJC = 4°C/W), leakage current (0.39 µA @ 25°C), and TO-220AB mechanical compatibility in space-constrained industrial and automotive power supplies.

Technical Context

This device employs a planar Trench Schottky architecture to minimize forward voltage drop while maintaining low reverse leakage across wide temperature ranges. Its 685 pF junction capacitance at 4 V DC and 1 MHz enables stable operation in high-frequency (>100 kHz) rectification circuits without excessive ringing or EMI.

The 280 A non-repetitive peak surge current rating supports robust transient handling in 60 Hz line-synchronized or PWM-driven topologies. Thermal design is enabled by validated RthJC = 4°C/W when mounted on an aluminum fin heatsink (42 mm × 25 mm × 25.1 mm), supporting continuous 20 A conduction at case temperatures up to 120°C.

Key Specifications

Pinout & Package

Package: JEDEC TO-220AB, 3-terminal through-hole package with isolated tab (cathode-connected tab), green molding compound (UL 94V-0), lead-free and halogen-free per RoHS 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STPS20H100CG and VS-20EWH10, G20H100CTW offers the lowest VF (0.61 V) and best thermal resistance (4°C/W) in the TO-220AB form factor, making it optimal for space-constrained, high-efficiency automotive and industrial DC-DC modules where tab isolation is required.

Availability

G20H100CTW is available at Aetrix Electronics and suitable for on-board DC-DC converters, high-frequency switch-mode adapters, and automotive body control modules requiring stable component supply and AEC-Q101-compliant reliability.

Supply support for G20H100CTW 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-performance, high-reliability components for power management, signal integrity, and protection applications.

G20H100CTW belongs to Diodes' Trench Schottky Rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in automotive, industrial, and computing systems where low VF, low leakage, and AEC-Q101 qualification are mandatory.

FAQ

Is G20H100CTW suitable for synchronous rectification replacement?

No-G20H100CTW is a passive Schottky rectifier, not a synchronous rectifier controller or MOSFET driver. It replaces conventional PN diodes in freewheeling or output rectification roles but requires no gate drive. Its negligible reverse recovery enables direct substitution in existing layouts without control loop changes.

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

The datasheet specifies I(AV) = 20 A at TC = 120°C. Exceeding 120°C case temperature requires derating per Figure 1: at TC = 135°C, maximum average current drops to ~17 A; at TC = 150°C, it falls to ~13 A. Thermal design must maintain TC ≤ 120°C for full-rated conduction.

Does the TO-220AB package provide electrical isolation between the tab and leads?

No-the metal tab is internally connected to the cathode (Lead 2) and is not electrically isolated. The "AB" suffix denotes standard TO-220 with three leads and non-insulated tab. Electrical isolation must be achieved externally using insulating washers or pads when mounting to grounded heatsinks.

Can G20H100CTW be used in 48 V battery systems with load dump transients?

Yes-its 100 V VRRM and AEC-Q101 qualification cover ISO 7637-2 Pulse 5a (load dump up to 120 V for 400 ms). However, system-level clamping (e.g., TVS or Zener) is still recommended upstream to limit peak reverse stress to ≤100 V during worst-case transients.