STMicroelectronics STTH30R06D

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 switch-mode power supplies. It delivers 1.10 V typical forward voltage at 125 °C, 50 ns maximum reverse recovery time, and 1.1 °C/W junction-to-case thermal resistance in DO-247 package.

For engineers reviewing the STTH30R06 datasheet, STTH30R06 pinout, STTH30R06 application, or STTH30R06 equivalent, key selection criteria include reverse recovery time under 50 ns, soft recovery behavior (S-factor ≤ 0.5), low conduction loss equation (P = 1.07 × IF(AV) + 0.011 × IF²(RMS)), and dual-package availability (DO-247 and DOP-3I) for thermal and mechanical layout flexibility.

Technical Context

This device implements ST's Turbo 2 silicon process to achieve 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 support operation up to 100 kHz with controlled di/dt sensitivity.

The diode exhibits low thermal resistance (1.1 °C/W in DO-247) and high junction temperature rating (175 °C), enabling sustained 30 A average forward current at TC = 115 °C. Reverse leakage remains below 800 µA at 125 °C and VR = 600 V, ensuring stable blocking performance in high-temperature industrial power systems.

Key Specifications

Pinout & Package

STTH30R06 is a two-terminal discrete diode available in DO-247 (axial, stud-mount) and DOP-3I (isolated base, TO-247 variant) packages. Both use a single anode–cathode configuration with electrically isolated metal tab (cathode-connected in DO-247; isolated in DOP-3I).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR3060CT and VS-30E60-M3, STTH30R06 offers the lowest combined trr–V_F trade-off (50 ns / 1.10 V) and best thermal resistance (1.1 °C/W), making it optimal for space-constrained, high-efficiency PFC and freewheeling applications where thermal management and EMI control are critical.

Availability

STTH30R06 is available at Aetrix Electronics and suitable for server power supply PFC stages, industrial motor drive DC links, and solar inverter MPPT stages 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 microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

STTH30R06 belongs to ST's Turbo 2 ultrafast diode product line, engineered specifically for high-frequency, high-efficiency power conversion in PFC, SMPS, and motor drive applications demanding low loss, soft recovery, and robust thermal performance.

FAQ

What is the recommended heatsink mounting method for STTH30R06 in DO-247 package?

For DO-247, mount the cathode tab directly to a flat, grounded heatsink using a 0.55 N·m torque on the M4 screw. An insulating washer (e.g., mica or ceramic) is mandatory if the heatsink is not at cathode potential. Thermal interface material is optional due to the low R_th(j-c) of 1.1 °C/W, but improves consistency in production.

Does STTH30R06 support synchronous rectification topologies?

No-STTH30R06 is a unidirectional, passive PN-junction diode and cannot be actively controlled. It is not suitable for synchronous rectification, which requires gate-driven MOSFETs. Its role is strictly as a high-performance freewheeling or boost rectifier in non-synchronous topologies.

How does the softness factor (S-factor) impact EMI in PFC designs?

The S-factor ≤ 0.5 ensures gradual current decay during reverse recovery, suppressing high di/dt-induced voltage spikes across stray inductance. This reduces broadband EMI (30–100 MHz) and eliminates need for large RC snubbers-verified in ST application note AN4745 for 65 kHz CCM PFC designs.

Can STTH30R06 replace older STTH30L06 in existing designs?

Yes-STTH30R06 supersedes STTH30L06 with identical pinout, package, and voltage rating, but improves trr from 60 ns to 50 ns (max) and lowers V_F by 0.15 V at 125 °C. No layout or thermal changes are needed; efficiency gains of ~0.2% are achievable in PFC stages without requalification.