STMicroelectronics STTH2R06A

Overview

STTH2R06A from STMicroelectronics is a 600 V, 2 A ultrafast recovery rectifier diode in SMA package, fabricated using Turbo 2 planar platinum-doped technology. It delivers low conduction losses (VF typ = 1.0 V at 150 °C), negligible switching losses, and fast reverse recovery (trr typ = 35 ns), making it ideal for high-frequency inverters and free-wheeling circuits in industrial power supplies.

For engineers reviewing the STTH2R06A datasheet, STTH2R06A pinout, STTH2R06A application, or STTH2R06A equivalent, key selection criteria include junction temperature rating (Tj = 175 °C), thermal resistance (Rth(j-l) = 30 °C/W), surge current capability (IFSM = 30 A), and low forward voltage stability across temperature.

Technical Context

This diode employs ST's Turbo 2 Pt-doping process to achieve precise carrier lifetime control, enabling ultrafast recovery without softness trade-offs. Its design targets high-efficiency switching in base-drive and transistor snubber circuits where low trr and minimal Qrr reduce turn-off losses.

Rated for 600 V repetitive reverse voltage and 175 °C maximum junction temperature, it supports continuous operation under high thermal stress. The SMA package provides optimized thermal path (Rth(j-l) = 30 °C/W) and mechanical robustness for surface-mount power conversion stages.

Key Specifications

Pinout & Package

STTH2R06A is housed in an SMA (DO-214AC) surface-mount package with cathode band marking. Lead finish is matte tin, RoHS-compliant and ECOPACK® certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR260 and VS-2EY60, STTH2R06A offers the best balance of low VF at high temperature, consistent 35 ns trr, and SMA package compatibility-making it optimal for high-density, high-efficiency 200–400 kHz industrial power stages.

Availability

STTH2R06A is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, motor drive freewheeling circuits, and solar microinverter clamping requiring stable component supply and long-term manufacturability.

Supply support for STTH2R06A 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing silicon solutions for automotive, industrial, and power applications.

The STTH series targets high-efficiency power conversion with ultrafast recovery diodes optimized for switching frequencies beyond 100 kHz and harsh thermal environments.

FAQ

What is the maximum allowable case temperature for STTH2R06A in continuous operation?

The device has no defined "case temperature" limit; instead, its safe operating area is governed by junction temperature (Tj ≤ 175 °C) and thermal resistance (Rth(j-l) = 30 °C/W). For 2 A DC, maximum allowable lead temperature is 115 °C (175 − 30 × 2), assuming ideal heat sinking through leads. PCB copper area and airflow directly impact actual lead temperature.

Can STTH2R06A replace a standard FR107 in a 60 Hz bridge rectifier?

No - STTH2R06A is optimized for high-frequency switching (≥100 kHz), not line-frequency rectification. Its low Qrr and fast trr provide no benefit at 60 Hz, while its higher cost and lower surge rating (IFSM = 30 A vs. FR107's 30 A but with longer tp tolerance) make it unsuitable for legacy linear power supplies.

Is STTH2R06A suitable for use in synchronous rectification topologies?

No - STTH2R06A is a unidirectional, passive PN-junction diode with fixed forward/reverse behavior. It cannot be actively controlled like a MOSFET and therefore cannot function as a synchronous rectifier. It serves only as a conventional or freewheeling diode in non-controlled paths.

Does STTH2R06A require a heatsink in a 2 A, 200 kHz flyback converter?

Not necessarily - with Rth(j-l) = 30 °C/W and typical PCB copper (≥1 cm² per lead), junction temperature rise is ~60 K at 2 A DC. At 200 kHz with 50% duty cycle, average power dissipation is ~1.1 W (VF × IF × D), resulting in ~33 K rise. A heatsink is unnecessary unless ambient exceeds 85 °C or layout restricts copper area.