STMicroelectronics STTH30L06CG-TR

Overview

STTH30L06CG-TR from STMicroelectronics is a 600 V, ultrafast dual common-cathode high-voltage rectifier diode in D²PAK package, rated for 30 A RMS and 20 A average forward current per diode, with 55 ns max reverse recovery time and 0.95 V typical forward voltage at 15 A/150 °C - optimized as boost diode in discontinuous/critical-mode PFC circuits.

For engineers reviewing the STTH30L06CG-TR datasheet, STTH30L06CG-TR pinout, STTH30L06CG-TR application, or STTH30L06CG-TR equivalent, key selection criteria include reverse recovery softness (S factor >1.0), low thermal resistance (1.7 °C/W junction-to-case per diode), conduction loss equation (P = 0.94×IF(AV) + 0.017×IF²(RMS)), and ECOPACK®2 compliance for industrial power supply designs.

Technical Context

This dual-diode rectifier uses ST's Turbo 2 silicon technology to achieve ultrafast switching with soft reverse recovery (S factor >1.0 at 100 A/µs), minimizing EMI and voltage overshoot in high-frequency PFC stages. Its common-cathode configuration supports interleaved or parallel operation while maintaining independent thermal paths.

The device operates up to 175 °C junction temperature with low Rth(j-c) of 1.7 °C/W per diode and 1.15 °C/W total (two diodes active), enabling high-power density designs. Dynamic parameters - including trr ≤55 ns (25 °C), IRM ≤12 A (125 °C), and Qrr <800 nC - are characterized across dlF/dt (50–500 A/µs) and temperature (25–150 °C).

Key Specifications

Pinout & Package

D²PAK (TO-263) surface-mount package with isolated metal tab (cathode connection), designed for high-current PCB mounting and direct heatsink coupling. Thermal pad electrically connected to cathode terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH30L06CG-TR, the TO-247 STTH30L06CW offers better thermal performance but sacrifices SMT compatibility, while the MUR3060CT trades soft recovery and low VF for broader distributor availability - making the D²PAK variant optimal for high-density, high-frequency, thermally constrained PFC designs.

Availability

STTH30L06CG-TR is available at Aetrix Electronics and suitable for server power supply PFC stages, industrial motor drive DC links, LED streetlight drivers, and renewable energy inverter inputs requiring stable component supply and long-lifecycle support.

Supply support for STTH30L06CG-TR 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 automotive, industrial, and consumer markets.

This device belongs to ST's Turbo 2 ultrafast diode product line, engineered specifically for high-efficiency, high-frequency power conversion in PFC, UPS, and industrial motor control applications where low trr, soft recovery, and thermal robustness are critical.

FAQ

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

The STTH30L06CG-TR has a maximum junction temperature of +175 °C. This allows operation at elevated case temperatures (up to 120 °C) without derating, provided Rth(j-c) = 1.7 °C/W per diode is respected. Designers must calculate ΔTj = P × Rth(j-c) using actual conduction and switching losses - not just IF(AV) - and ensure heatsink interface resistance stays below 0.5 °C/W for reliable long-term operation.

Is the D²PAK tab electrically isolated, and what is its voltage rating?

No, the D²PAK metal tab is not electrically isolated - it is internally connected to the common cathode (K) of both diodes. It must be mounted on an insulated heatsink or grounded copper area. The tab shares the same 600 V VRRM rating as the diode junctions, but creepage/clearance on PCB must comply with IEC 62368-1 for 600 V working voltage, requiring ≥5.5 mm spacing to other potentials.

How does the dual-diode configuration impact conduction loss calculation?

Conduction loss is calculated per diode using P = 0.94 × IF(AV) + 0.017 × IF²(RMS). When both diodes conduct simultaneously (e.g., interleaved PFC), total loss is double the per-diode value. However, thermal coupling reduces effective Rth(j-c) to 1.15 °C/W total - so junction temperature rise is less than twice that of single-diode operation, enabling higher combined RMS current before thermal limit.

Can STTH30L06CG-TR replace older STTH30L06C variants in existing designs?

Yes - STTH30L06CG-TR is a tape-and-reel version of the same die and package as the base STTH30L06C, with identical electrical, thermal, and mechanical specifications. The "G-TR" suffix denotes green (halogen-free) material and reel packaging; no circuit or layout changes are needed for drop-in replacement in legacy designs qualified to DocID10761 Rev 2.