STMicroelectronics STTH30R06P

Overview

STTH30R06 from STMicroelectronics is a 600 V, 30 A ultrafast high-voltage rectifier diode using Turbo 2 technology, optimized for boost-stage PFC in discontinuous or critical conduction mode and freewheeling in switched-mode power supplies. It delivers 1.10 V typical forward voltage at 125 °C, 50 ns maximum reverse recovery time, and operates up to 175 °C junction temperature.

For engineers reviewing the STTH30R06 datasheet, STTH30R06 pinout, STTH30R06 application, or STTH30R06 equivalent, key selection criteria include reverse recovery time under 50 ns at 25 °C, thermal resistance as low as 1.1 °C/W (DO-247), soft recovery behavior, and conduction loss modeling via P = 1.07 × IF(AV) + 0.011 × IF²(RMS).

Technical Context

This device implements ST's Turbo 2 silicon process for ultrafast switching with soft reverse recovery-critical for minimizing EMI and voltage overshoot in high-frequency PFC stages. Its 50 ns trr (max) and 8–11 A IRM at 125 °C enable efficient operation in 65–100 kHz boost converters.

The diode supports dual package options: DO-247 (Rth(j-c) = 1.1 °C/W) and DOP-3I (Rth(j-c) = 1.7 °C/W), both rated for 300 A non-repetitive surge current and 175 °C maximum junction temperature-enabling robust thermal design in compact industrial and server PSU layouts.

Key Specifications

Pinout & Package

STTH30R06 is a two-terminal axial diode. The DO-247 and DOP-3I packages each feature an anode and cathode terminal, with cathode identified by a band on the body. Mounting torque is specified at 0.55 N·m (DO-247) and 0.9–1.2 N·m (DOP-3I).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR3060PT and VS-30ETH06-M3, STTH30R06 offers the lowest combined trr/Rth(j-c) product (50 ns × 1.1 °C/W), making it optimal for thermally constrained, high-frequency PFC designs where both switching and conduction losses must be minimized simultaneously.

Availability

STTH30R06 is available at Aetrix Electronics and suitable for server power supply PFC stages, industrial motor drive DC links, telecom rectifier modules, and EV onboard charger front-ends requiring stable component supply and long-term industrial lifecycle support.

Supply support for STTH30R06 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 analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

STTH30R06 belongs to ST's Turbo 2 ultrafast diode product line, engineered specifically for high-efficiency, high-frequency power factor correction and freewheeling applications in industrial and computing power supplies.

FAQ

What is the maximum junction temperature and how does it impact thermal design?

The STTH30R06 has a maximum junction temperature of 175 °C. This allows operation in high-ambient environments such as sealed server PSUs or industrial enclosures without derating at full 30 A current, provided case temperature remains below 115 °C (DO-247) or 85 °C (DOP-3I) per datasheet limits. Thermal design must account for Rth(j-c) and heatsink interface resistance.

How does the soft recovery characteristic reduce EMI in PFC circuits?

Soft recovery-quantified by S-factor < 0.6-limits the rate of reverse current decay (diR/dt), suppressing high-frequency ringing and voltage overshoot across the switching FET. This directly lowers conducted and radiated EMI, reducing filter component count and easing compliance with EN 55022 Class B and CISPR-25 standards.

Can STTH30R06 replace standard fast recovery diodes in existing 600 V designs?

Yes-STTH30R06 can directly replace legacy 600 V fast recovery diodes (e.g., STTH30L06) in boost PFC and freewheeling roles. Its lower trr (50 ns vs. 75+ ns), softer recovery, and higher Tj rating improve efficiency and reliability. Mechanical compatibility depends on DO-247 or DOP-3I footprint match-not TO-220 or D2PAK.

What is the recommended mounting torque for DO-247 and why does it matter?

The recommended torque for DO-247 is 0.55 N·m (maximum 1.0 N·m). Proper torque ensures optimal thermal contact between the metal tab and heatsink while avoiding die cracking or solder joint fracture. Under-torque increases Rth(j-c); over-torque risks mechanical damage to the internal bond wires or package seal.