Diodes Incorporated DTH8S06D

Overview

DTH8S06D from Diodes Incorporated is an 8A, 600V hyper-fast epitaxial rectifier diode in TO220AC package, featuring 21ns reverse recovery time, 3.4V forward voltage at 8A, and 15μA reverse leakage at 600V/25°C. It serves as a primary output rectifier or freewheeling diode in high-frequency SMPS, LED drivers, and battery chargers requiring soft switching and low switching loss.

For engineers reviewing the DTH8S06D datasheet, DTH8S06D pinout, DTH8S06D application, or DTH8S06D equivalent, key selection criteria include its 21ns tRR for continuous conduction mode (CCM) PFC stages, thermal resistance of 2.8°C/W (junction-to-case), and cathode-connected metal tab for direct heatsink mounting in compact power supplies.

Technical Context

This hyper-fast rectifier employs epitaxial construction with glass passivation to achieve soft reverse recovery behavior-critical for reducing EMI and voltage overshoot in hard-switched converters operating above 100kHz. Its 12–18ns typical tRR (measured at IF = 1A, dIF/dt = −200A/μs, VR = 30V) enables stable operation in CCM boost PFC and LLC secondary-side rectification.

The device's 2.8°C/W junction-to-case thermal resistance and cathode-integrated metal tab allow direct mechanical and thermal coupling to heatsinks without insulating pads, supporting 8A DC current at ≤125°C junction temperature when mounted on ≥10cm² aluminum heatsink with thermal interface material.

Key Specifications

Pinout & Package

Package: TO220AC (Type WX), molded plastic with UL 94V-0 rating; cathode-connected metal tab provides both electrical connection and thermal path to heatsink.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hyper-fast rectifier applications.

Compared with STTH8R06DJF and IXYS MUR860E, DTH8S06D delivers the fastest verified tRR (21ns) and lowest QRR (60nC), making it optimal for high-frequency, EMI-constrained PFC and LED driver designs where thermal coupling via cathode tab is architecturally feasible.

Availability

DTH8S06D is available at Aetrix Electronics and suitable for LED lighting drivers, USB-C PD chargers, and industrial SMPS requiring stable component supply, consistent parametric performance, and RoHS 3-compliant sourcing.

Supply support for DTH8S06D 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 DTH8S06D belongs to Diodes' Hyper-Fast Rectifier product line, engineered specifically for high-efficiency, high-frequency AC-DC and DC-DC conversion in consumer, industrial, and lighting applications demanding soft recovery and robust thermal performance.

FAQ

Is the metal tab of DTH8S06D electrically isolated?

No-the metal tab is internally connected to the cathode terminal (Pin 2). This configuration allows direct thermal mounting to a heatsink without electrical isolation, provided the heatsink is referenced to cathode potential. If system grounding requires isolation, an insulating pad and shoulder washer must be used, increasing RθJC by ~1.2°C/W.

What is the maximum junction temperature for continuous operation?

The DTH8S06D supports continuous operation up to TJ = +175°C. At 8A DC load with RθJC = 2.8°C/W and 25°C case temperature, junction temperature reaches ~119°C-well within safe margin. Derating is required above 125°C ambient; full 8A rating assumes case temperature ≤105°C.

Can DTH8S06D replace a Schottky diode in a 24V output flyback converter?

Yes, but only where reverse voltage exceeds 40V. While its 3.4V VF is higher than Schottky diodes (~0.5V), the 600V VRRM and 21ns tRR make it suitable for higher-output-voltage flybacks (e.g., 48V+) where Schottky leakage and thermal runaway risk limit use. Efficiency trade-off must be evaluated per operating point.

Does DTH8S06D meet AEC-Q101 for automotive use?

No-DTH8S06D is not AEC-Q101 qualified. Diodes Incorporated offers automotive-grade equivalents (e.g., DTH8S06DQ) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation. Standard DTH8S06D is rated for industrial and commercial applications only.