STMicroelectronics STTH8R06D

Overview

STTH8R06D from STMicroelectronics is an ultrafast high-voltage silicon rectifier diode in TO-220AC package, rated for 600 V repetitive peak reverse voltage and 8 A average forward current at Tc = 130 °C. It features 25 ns maximum reverse recovery time, 1.4 V typical forward voltage at 125 °C/8 A, and low thermal resistance (2.2 °C/W junction-to-case), optimized for continuous-conduction-mode PFC boost stages.

For engineers reviewing the STTH8R06D datasheet, STTH8R06D pinout, STTH8R06D application, or STTH8R06D equivalent, key selection criteria include ultrafast trr performance under hard-switching conditions, low conduction loss at elevated junction temperature, insulation capability in non-isolated topologies, and thermal management compatibility with standard TO-220 heatsinking.

Technical Context

The STTH8R06D employs ST's Turbo 2 600 V technology to achieve soft reverse recovery with S factor ≥0.3 and low Qrr (150 nC), minimizing voltage overshoot and EMI in high-frequency switching converters. Its dynamic behavior is characterized at dIF/dt up to –200 A/µs and VR = 400 V, supporting operation in active clamp and resonant topologies.

Thermal design relies on direct conduction cooling via the case tab; Rth(j-c) = 2.2 °C/W enables sustained 8 A IF(AV) at Tc = 130 °C. Reverse leakage remains ≤400 µA at 125 °C, ensuring stable blocking in high-temperature industrial power supplies.

Key Specifications

Pinout & Package

STTH8R06D uses the TO-220AC package: a 3-lead, through-hole, non-insulated plastic power package with electrically active metal tab (anode-connected). Mounting requires mechanical torque of 0.55 N·m and electrical isolation via insulating washer if chassis grounding is required.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH8R06G and IXYS MUR860E, STTH8R06D delivers superior thermal performance in through-hole systems, lowest trr among TO-220-packaged 600 V rectifiers, and verified softness for EMI-critical applications-making it optimal for high-efficiency, high-reliability industrial PFC.

Availability

STTH8R06D is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, server rectification systems, and motor drive input stages requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STTH8R06D 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, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The STTH series targets high-efficiency power conversion, emphasizing ultrafast recovery, low loss, and rugged thermal performance for demanding PFC and switching power supply applications.

FAQ

Is STTH8R06D RoHS-compliant and halogen-free?

Yes. STTH8R06D carries ECOPACK®2 certification, meeting RoHS Directive 2011/65/EU and halogen-free requirements per IEC 61249-2-21. The TO-220AC package uses UL94 V0 epoxy and lead-free terminations compatible with standard SnPb and Pb-free soldering processes.

What is the maximum recommended mounting torque for STTH8R06D?

The manufacturer specifies a recommended torque of 0.55 N·m and absolute maximum of 0.7 N·m for the TO-220AC mounting screw. Exceeding 0.7 N·m risks cracking the package body or deforming the leadframe, compromising thermal and mechanical integrity.

Can STTH8R06D replace standard FRDs in existing 600 V PFC designs?

Yes, provided layout accommodates TO-220AC footprint and thermal interface is verified. Its 25 ns trr and 1.4 V VF improve efficiency over typical FRDs (e.g., 50–75 ns trr, 1.8–2.1 V VF), but layout parasitics must be minimized to realize full soft-switching benefit.

Does STTH8R06D require a heatsink in all operating conditions?

A heatsink is mandatory for continuous 8 A operation. At Tc = 130 °C, junction temperature reaches 175 °C without heatsinking. For pulsed or low-duty-cycle use (<2 A average), natural convection may suffice-but thermal simulation using Rth(j-c) = 2.2 °C/W is required to confirm safe Tj.