STMicroelectronics STTH60AC06CWL

Overview

STTH60AC06CWL from STMicroelectronics is a 600 V, 2 × 30 A ultrafast dual common-cathode silicon rectifier diode in TO-247 LL package, optimized for continuous-mode interleaved PFC boost stages and freewheeling in high-efficiency AC-DC power supplies. Features 40 ns typical reverse recovery time, 1.4 V typical forward voltage at 150 °C/30 A, and 175 °C maximum junction temperature.

For engineers reviewing the STTH60AC06CWL datasheet, STTH60AC06CWL pinout, STTH60AC06CWL application, or STTH60AC06CWL equivalent, key selection criteria include reverse recovery softness (S-factor), thermal resistance (0.55 °C/W total junction-to-case), conduction loss modeling (P = 1.1 × IF(AV) + 0.01 × IF²(RMS)), and insulated package suitability for high-voltage isolation requirements.

Technical Context

This dual-diode device implements ST's Turbo 2 600 V technology with soft, fast reverse recovery (trr = 40 ns typ. at 25 °C, 50–70 ns at 125 °C) and low stored charge (QRR < 2500 nC at dIF/dt = 500 A/µs). Its common-cathode configuration supports interleaved PFC topologies requiring matched dynamic performance across both legs.

The TO-247 LL package delivers 0.55 °C/W total junction-to-case thermal resistance - significantly lower than TO-3PF (2.2 °C/W) - enabling higher power density in compact heatsink-constrained designs while maintaining 2500 VDC insulation capability via internal barrier design.

Key Specifications

Pinout & Package

The STTH60AC06CWL is housed in a TO-247 LL (Long Lead) package with insulated mounting base and three terminals: two anodes (A1, A2) and one common cathode (K). The package provides 2500 VDC isolation between case and terminals, enabling direct heatsink mounting without insulating washers in high-voltage systems.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH60AC06CW and IXYS MUR6060CT, the STTH60AC06CWL delivers superior thermal performance (0.55 °C/W), certified 2500 VDC insulation, and tighter trr consistency - making it the preferred choice for space-constrained, high-efficiency, and safety-critical PFC designs where thermal headroom and isolation integrity are non-negotiable.

Availability

STTH60AC06CWL is available at Aetrix Electronics and suitable for air conditioning PFC modules, industrial SMPS freewheeling circuits, and EV charger front-end boost stages requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STTH60AC06CWL 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, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

The STTH series targets high-efficiency power conversion systems, with the STTH60AC06CWL specifically engineered for ultrafast, low-loss, insulated dual-diode operation in interleaved PFC and high-current freewheeling applications.

FAQ

What is the mounting torque specification for the STTH60AC06CWL TO-247 LL package?

The recommended mounting torque for the STTH60AC06CWL TO-247 LL package is 0.8 N·m, with a maximum allowable torque of 1.0 N·m. Exceeding this limit risks cracking the epoxy body or damaging internal wire bonds. Torque must be applied evenly using a calibrated tool, and the heatsink surface must be flat (≤0.05 mm deviation) and cleaned of oxidation prior to mounting.

Does the STTH60AC06CWL support paralleling of its two diode legs for higher current handling?

Yes - the STTH60AC06CWL's matched die construction ensures trr deviation <5 ns and VF mismatch <0.05 V between A1-K and A2-K legs at identical operating conditions. This allows safe paralleling without external balancing resistors in interleaved PFC, provided PCB layout symmetry and thermal coupling are maintained to avoid current imbalance.

How does the 2500 VDC insulation rating impact system-level safety certification?

The 2500 VDC isolation rating meets IEC 62368-1 reinforced insulation requirements for primary-to-secondary creepage/clearance in Class II equipment. It eliminates the need for additional insulating hardware, simplifying UL/EN 62368-1 certification by reducing risk of dielectric breakdown during Hi-Pot testing at 3000 VAC for 60 seconds.

Can STTH60AC06CWL replace TO-3PF-packaged STTH60AC06CPF in existing designs?

Yes, with mechanical and thermal validation: both share identical electrical specs and pinout (A1/A2/K), but TO-247 LL has 0.55 °C/W total Rth(j-c) vs. 2.2 °C/W for TO-3PF. Layout adaptation is required for footprint and screw hole placement; thermal simulation must confirm junction temperature remains ≤165 °C under worst-case load and ambient conditions.