STMicroelectronics STTH30R06W

Overview

STTH30R06W from STMicroelectronics is a 600 V, 30 A ultrafast high-voltage rectifier diode in DO-247 package, optimized for boost-stage PFC in discontinuous/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.

For engineers reviewing the STTH30R06W datasheet, STTH30R06W pinout, STTH30R06W application, or STTH30R06W equivalent, key selection criteria include reverse recovery softness (S-factor ≤ 0.5), low IR (≤ 800 µA at 125 °C), conduction loss equation (P = 1.07 × IF(AV) + 0.011 × IF²(RMS)), and thermal performance under high-frequency switching stress.

Technical Context

This device implements ST's Turbo 2 silicon technology to achieve ultrafast recovery with controlled softness-critical for minimizing EMI and voltage overshoot in high-dV/dt PFC stages. Its 50 ns trr (max) and 8–11 A IRM at 125 °C enable reliable operation in 65–100 kHz boost converters.

The DO-247 package provides low thermal resistance (1.1 °C/W) and mechanical robustness for high-power discrete mounting, supporting direct heatsink attachment via M3 screw (0.55 N·m torque). Junction temperature is rated to 175 °C, enabling sustained operation under high ambient conditions.

Key Specifications

Pinout & Package

STTH30R06W is a two-terminal axial diode in DO-247 package (standardized as IEC 60747-16 compliant high-power through-hole outline). No internal pin numbering applies; cathode is marked by band on body, anode is unmarked lead.

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-30E60-M3, STTH30R06W offers superior thermal performance (1.1 °C/W), tighter trr control (50 ns max), and lower VF (1.10 V), making it optimal for compact, high-efficiency PFC and freewheeling designs where thermal density and EMI are constrained.

Availability

STTH30R06W is available at Aetrix Electronics and suitable for industrial motor drives, telecom rectifier modules, server power supplies, and boost PFC stages requiring stable component supply and long-lifecycle support.

Supply support for STTH30R06W 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 automotive, industrial, and consumer markets.

STTH30R06W belongs to the Turbo 2 ultrafast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in AC-DC and DC-DC systems where low conduction loss and controlled recovery dynamics are essential.

FAQ

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

The STTH30R06W has a maximum operating junction temperature of 175 °C. This rating allows operation in high-ambient environments such as enclosed server PSUs or industrial enclosures without derating, provided the heatsink maintains case temperature ≤115 °C for full 30 A IF(AV) rating. Thermal design must account for Rth(j-c) = 1.1 °C/W and interface resistance between DO-247 baseplate and heatsink.

Is STTH30R06W suitable for synchronous rectification topologies?

No-STTH30R06W is a unidirectional silicon PN junction diode, not a MOSFET-based synchronous rectifier. It lacks gate control and cannot be actively turned off. It is intended for passive rectification and freewheeling roles where fixed polarity and ultrafast recovery are required, such as in boost PFC or flyback snubbers.

How does the soft recovery characteristic impact EMI in PFC designs?

With S-factor ≤ 0.5, STTH30R06W exhibits gradual current decay during turn-off, suppressing high-frequency ringing and dV/dt-induced EMI. This reduces peak spectral energy above 30 MHz, easing compliance with CISPR-22 Class B conducted emissions limits without oversized snubbers or ferrite beads.

What is the recommended mounting torque for the DO-247 package?

The recommended torque value for securing the STTH30R06W DO-247 package to a heatsink is 0.55 N·m. Exceeding the maximum torque of 1.0 N·m risks cracking the epoxy body or deforming the metal baseplate, compromising thermal contact and long-term reliability under thermal cycling.