STMicroelectronics STTH30M06SPF

Overview

STTH30M06SPF from STMicroelectronics is an ultrafast recovery 600 V, 30 A power rectifier in insulated TO-3PF package, optimized for high-frequency boost PFC and LLC clamping circuits in air conditioning and telecom power supplies. It delivers 25 ns typical reverse recovery time, 1.7 V typical forward voltage at 15 A/25 °C, and supports 175 °C maximum junction temperature with 170 A non-repetitive surge capability.

For engineers reviewing the STTH30M06SPF datasheet, STTH30M06SPF pinout, STTH30M06SPF application, or STTH30M06SPF equivalent, key selection criteria include soft recovery behavior (SFACTOR >0.6), low Qrr (380 nC), high dIF/dt immunity (up to 1000 A/µs), and insulated 2000 VRMS package rating for enhanced system safety in high-voltage AC-DC stages.

Technical Context

This diode employs ST's proprietary ultrafast silicon technology to minimize reverse recovery charge and current overshoot during hard-switching transitions. Its soft recovery characteristic (SFACTOR >0.6 across 150–1000 A/µs) reduces EMI generation and voltage spikes in resonant converters.

Designed for conduction and switching loss optimization, it features a low Rth(j-c) of 1.6 °C/W (typ.) and operates reliably under heavy-duty thermal cycling. The TO-3PF package enables direct heatsink mounting via insulated base, supporting high-current freewheeling and clamping roles without additional isolation hardware.

Key Specifications

Pinout & Package

The STTH30M06SPF uses an insulated TO-3PF package with electrically isolated metal base rated for 2000 VRMS. Mounting is via M3 screw with recommended torque of 0.8–1.0 N·m. Thermal interface requires conductive grease or pad between case and heatsink.

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-30CPH06-M3, STTH30M06SPF offers superior softness (SFACTOR >0.6), lower Qrr (380 nC), and certified 2000 VRMS insulation-making it optimal for new designs targeting high-density, high-reliability AC-DC conversion with simplified thermal and safety implementation.

Availability

STTH30M06SPF is available at Aetrix Electronics and suitable for air conditioning inverters, telecom rectifier modules, and industrial motor drives requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STTH30M06SPF 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 microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STTH series targets high-efficiency, high-reliability power conversion systems-specifically engineered for ultrafast switching, low-loss rectification, and robust thermal performance in demanding AC-DC and DC-DC applications.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STTH30M06SPF has a maximum junction temperature of 175 °C and a typical junction-to-case thermal resistance of 1.6 °C/W. Assuming 30 A average forward current and 1.7 V forward drop, power dissipation is ~51 W; with Rth(j-c) = 1.6 °C/W, case temperature must remain ≤94 °C to keep junction at 175 °C. Derating curves in Figure 2 confirm 30 A is sustainable at Tc ≤ 80 °C.

Can STTH30M06SPF replace standard fast recovery diodes in existing 600 V designs?

Yes-STTH30M06SPF is a direct upgrade for standard FRDs like BYV26E or STTH12R06 in 600 V applications. Its 25 ns trr (vs. 50–75 ns), lower Qrr, and soft recovery reduce EMI and snubber losses. However, verify TO-3PF mounting clearance and torque (0.8–1.0 N·m) due to its insulated base geometry differing from TO-220 or TO-247 footprints.

How does the insulated TO-3PF package affect PCB layout and thermal design?

The TO-3PF's 2000 VRMS insulated base eliminates need for insulating washers or pads between case and heatsink, simplifying mechanical assembly and improving thermal contact. Layout must accommodate its larger footprint (L4 = 43.8 mm max) and ensure adequate creepage/clearance to adjacent traces-minimum 4.5 mm spacing recommended per IEC 62368-1 for reinforced insulation.

Is STTH30M06SPF suitable for synchronous rectification topologies?

No-STTH30M06SPF is a unidirectional, passive PN junction diode and cannot be actively controlled. It is intended for freewheeling, clamping, and boost rectification roles in non-synchronous topologies. For synchronous rectification, discrete MOSFETs or integrated SR controllers (e.g., STSR3) paired with low-RDS(on) FETs are required.