STMicroelectronics STTH60AC06CPF

Overview

STTH60AC06CPF from STMicroelectronics is a 600 V, 2 × 30 A ultrafast dual common-cathode high-voltage rectifier diode in insulated TO-3PF package, designed for continuous-mode interleaved PFC boost stages and freewheeling in high-power AC/DC converters. It delivers 40 ns typical reverse recovery time, 1.4 V typical forward voltage at 150 °C/30 A, and 2500 VDC isolation rating.

For engineers reviewing the STTH60AC06CPF datasheet, STTH60AC06CPF pinout, STTH60AC06CPF application, or STTH60AC06CPF equivalent, key selection criteria include reverse recovery softness (S-factor >1.0), low thermal resistance (R_th(j-c) = 2.2 °C/W total), conduction loss modeling (P = 1.1×I_F(AV) + 0.01×I_F(RMS)²), and insulated mounting compatibility for high-voltage safety compliance.

Technical Context

This dual-diode device integrates two independent 600 V, 30 A ultrafast junctions sharing a common cathode terminal, enabling symmetrical interleaved PFC operation without external parallel balancing. Its Turbo 2 technology optimizes carrier lifetime for simultaneous low V_F and fast t_rr, with soft recovery (S-factor >1.0) minimizing EMI in hard-switched topologies.

Thermal design leverages the TO-3PF's insulated metal baseplate (2500 VDC isolation) and low R_th(j-c) of 2.2 °C/W (total device), supporting conduction cooling in space-constrained air conditioning inverters and industrial power supplies where creepage/clearance constraints prohibit non-isolated packages.

Key Specifications

Pinout & Package

TO-3PF package with insulated metal baseplate (2500 VDC isolation), epoxy body meeting UL94 V0, and M3.5 screw-mount terminals. Designed for conduction cooling with recommended torque 0.8–1.0 N·m.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR6060CT and VS-60CPH06, STTH60AC06CPF uniquely combines 2500 VDC isolation, 40 ns t_rr, and TO-3PF mechanical robustness-making it the only option qualified for safety-critical, space-constrained HVAC and industrial UPS designs requiring no external insulation.

Availability

STTH60AC06CPF is available at Aetrix Electronics and suitable for air conditioning inverters, industrial AC/DC power supplies, and uninterruptible power systems requiring stable component supply, long-lifecycle support, and certified high-voltage isolation.

Supply support for STTH60AC06CPF 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, specializing in power management, analog, microcontrollers, and automotive ICs.

The STTH series targets high-efficiency power conversion systems, with STTH60AC06CPF specifically engineered for ultrafast, insulated rectification in high-reliability HVAC, UPS, and industrial motor drive applications.

FAQ

What is the maximum junction temperature and how is it enforced?

The STTH60AC06CPF has a maximum operating junction temperature of 175 °C, verified per absolute ratings in DS9785 Rev 4. This limit is enforced through thermal design using its specified R_th(j-c) = 2.2 °C/W (total) and derating curves in Figure 1. Operation beyond 175 °C risks permanent parametric shift and accelerated wear-out.

Can STTH60AC06CPF be used in non-interleaved PFC topologies?

Yes-it functions as a single 60 A average current diode when both anodes are paralleled externally, though this forfeits the soft-recovery advantage of independent phase control. The common-cathode configuration remains valid, but thermal and EMI performance will differ from interleaved use per Figures 6–9.

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

The TO-3PF's 2500 VDC isolation allows direct mounting to a grounded metal heatsink without insulating pads or washers. Layout must maintain ≥4 mm creepage between A1/A2 traces and any low-voltage circuitry, and thermal vias under the baseplate are unnecessary-heat transfers conductively through the insulated base to the heatsink.

What is the significance of the "C" suffix in STTH60AC06CPF?

The "C" denotes ST's Turbo 2 silicon technology optimized for ultrafast recovery with soft switching characteristics. The "F" suffix specifies the TO-3PF package variant with insulated baseplate and 2500 VDC isolation rating, distinguishing it from non-insulated TO-247 variants (e.g., STTH60AC06CW).