STMicroelectronics STTH30AC06CWL

Overview

STTH30AC06CWL from STMicroelectronics is a 600 V, 2 × 15 A ultrafast dual common-cathode high-voltage rectifier diode in TO-247 LL package, optimized for continuous-mode interleaved PFC stages in air conditioning systems. It delivers typ. 40 ns reverse recovery time, 1.15 V forward voltage at 15 A/150 °C, and 175 °C max junction temperature.

For engineers reviewing the STTH30AC06CWL datasheet, STTH30AC06CWL pinout, STTH30AC06CWL application, or STTH30AC06CWL equivalent, key selection criteria include reverse recovery softness (SFACTOR > 0.8), low conduction loss (VF ≤ 1.45 V @ 15 A/150 °C), thermal resistance (Rth(j–c) = 0.85 °C/W total), and TO-247 LL mounting compatibility with standard heatsink interfaces.

Technical Context

This dual-diode device integrates two independent 600 V, 15 A ultrafast switching elements sharing a common cathode terminal-enabling symmetrical interleaved boost PFC operation without external current-sharing components. Its Turbo 2 silicon technology minimizes stored charge (QRR typ. 120 nC @ dIF/dt = 200 A/µs) and ensures soft reverse recovery (SFACTOR > 1.0 at 125 °C).

The TO-247 LL package features low-profile leads and optimized thermal path: junction-to-case resistance is 0.85 °C/W total (1.5 °C/W per diode), enabling high-power density designs in space-constrained AC inverter modules. Mounting torque is specified at 0.8–1.0 N·m to ensure consistent thermal interface pressure.

Key Specifications

Pinout & Package

TO-247 LL package: 3-terminal dual-diode configuration with isolated anodes and shared cathode. Features low-profile leads, UL94 V0 epoxy, and screw-mount compatible flange for conductive cooling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH30L06CW and MDD300-16N1, STTH30AC06CWL offers the optimal trade-off for single-phase HVAC PFC: lowest combined conduction + switching loss (P_loss ≈ 8.3 W @ 15 A/100 kHz), best softness for EMI control, and precise die matching for current balance without sensing.

Availability

STTH30AC06CWL is available at Aetrix Electronics and suitable for air conditioning inverters, industrial switch-mode power supplies, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp-up.

Supply support for STTH30AC06CWL 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.

This device belongs to ST's Turbo 2 ultrafast diode product line, engineered specifically for high-efficiency, high-frequency PFC stages in HVAC, server PSUs, and renewable energy converters where low Q_RR, soft recovery, and thermal robustness are critical.

FAQ

What is the maximum recommended mounting torque for STTH30AC06CWL?

The TO-247 LL package specifies a mounting torque range of 0.8 to 1.0 N·m. Exceeding 1.0 N·m risks cracking the epoxy body or deforming the flange, compromising thermal interface integrity and long-term reliability under thermal cycling. Use calibrated torque tools and verify flatness of heatsink surface before assembly.

Can STTH30AC06CWL be used in place of a single-diode TO-247 rectifier?

No - STTH30AC06CWL is a dual-anode, common-cathode device with three terminals (A1, A2, K). Replacing a single-diode part requires rewiring to use only one anode and the shared cathode, abandoning interleaved benefits and risking imbalance. Its value lies in dual-leg PFC, not drop-in substitution.

How does the 175 °C junction rating impact PCB layout?

The 175 °C rating permits smaller copper pour areas and relaxed spacing rules near the device, but thermal vias must still connect the cathode pad to internal ground planes and external heatsinks. Minimum 6× thermal vias (0.3 mm diameter) under the flange are required to maintain R_th(j–pcb) < 3.5 °C/W in 4-layer boards.

Is STTH30AC06CWL RoHS and REACH compliant?

Yes - STTH30AC06CWL is manufactured in ST's ECOPACK2-compliant facilities and meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The TO-247 LL package uses lead-free matte tin plating and halogen-free epoxy, with full material declarations available via ST's Product Change Notification portal.