STMicroelectronics STTH10LCD06CFP

Overview

STTH10LCD06CFP from STMicroelectronics is a dual ultrafast high-voltage rectifier diode in TO-220FPAB package, rated for 600 V repetitive peak reverse voltage, 10 A total average forward current (5 A per diode), and 25 ns maximum reverse recovery time at 25 °C. It employs Turbo2 technology to minimize conduction and switching losses in interleaved PFC stages of high-efficiency SMPS.

For engineers reviewing the STTH10LCD06CFP datasheet, STTH10LCD06CFP pinout, STTH10LCD06CFP application, or STTH10LCD06CFP equivalent, key selection criteria include thermal resistance (7.5 °C/W junction-to-case), low reverse leakage (≤50 µA at 150 °C), soft recovery behavior, and compatibility with high-dIF/dt conditions up to 500 A/µs in continuous operation.

Technical Context

The STTH10LCD06CFP integrates two independent ultrafast silicon diodes in a single isolated TO-220FPAB package, each with symmetrical anode–cathode terminals (A1/K/A2 configuration). Its Turbo2 process enables low VF (1.25 V typ. at 5 A, 150 °C) and controlled soft reverse recovery (SFACTOR ≥2.5), critical for reducing EMI and voltage overshoot in hard-switched PFC boost cells.

Thermal design is constrained by Rth(j-c) = 7.5 °C/W per diode and Tj(max) = 175 °C, requiring heatsink mounting via the insulated tab. Dynamic performance is characterized under defined dIF/dt (−50 A/µs), VR (400 V), and Tj (125 °C) conditions, with IRM ≤2.5 A and QRR ≤300 nC per diode.

Key Specifications

Pinout & Package

STTH10LCD06CFP uses the TO-220FPAB package: insulated plastic case with metal tab, 3-pin outline (A1–K–A2), 2.04 g mass, and recommended mounting torque of 0.4–0.6 N·m. The tab is electrically isolated and thermally conductive.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH10LCD06CFP, the CT variant offers better thermal performance but adds isolation overhead, while the IXYS part trades recovery speed and softness for lower cost-making the CFP optimal for space-constrained, high-efficiency, low-EMI PFC where thermal management is via insulated heatsink.

Availability

STTH10LCD06CFP is available at Aetrix Electronics and suitable for server power supplies, industrial AC-DC converters, and EV charging station power stages requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for STTH10LCD06CFP 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, analog ICs, and MEMS sensors for industrial, automotive, and consumer markets.

The STTH10LCD06CFP belongs to ST's Turbo2 ultrafast diode product line, engineered specifically for high-frequency, high-efficiency power factor correction circuits in next-generation switched-mode power supplies.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STTH10LCD06CFP is rated for I_F(AV) = 10 A (5 A per diode) at T_c = 100 °C in TO-220FPAB package. Exceeding this temperature reduces safe operating current linearly per derating curve in Figure 1; sustained operation above 100 °C requires proportional current reduction to maintain T_j ≤175 °C.

Is the cathode terminal internally connected between both diodes?

Yes-the K terminal is the common cathode shared by both A1 and A2 anodes, confirmed by internal schematic in Section 1 of Doc ID 15897 Rev 3. This configuration enables straightforward implementation in dual-phase interleaved PFC where both diodes feed the same DC bus node.

Does STTH10LCD06CFP require a gate resistor or snubber network?

No external snubber is required due to its soft recovery characteristic (SFACTOR ≥2.5) and low Q_RR. However, a small RC snubber (e.g., 100 Ω + 100 pF) across A1–K may be used in ultra-high dI_F/dt (>300 A/µs) applications to further damp residual ringing observed in prototype validation.

Can STTH10LCD06CFP replace STTH10LCD06CG-TR in a D2PAK footprint?

No-it cannot be substituted mechanically or electrically without board redesign. The CFP uses TO-220FPAB (3-pin, insulated tab), while CG-TR uses D2PAK (3-pin, non-isolated tab, different pad layout and thermal pad dimensions). Electrical ratings match, but thermal and mechanical interfaces are incompatible.