STMicroelectronics STTH10LCD06FP

Overview

STTH10LCD06FP from STMicroelectronics is an ultrafast high-voltage silicon rectifier diode in insulated TO-220FPAC package, rated for 600 V repetitive peak reverse voltage, 10 A average forward current, and 35 ns typical reverse recovery time. It employs Turbo 2 technology to minimize conduction and switching losses in LCD display power supplies and flat-panel TV SMPS.

For engineers reviewing the STTH10LCD06FP datasheet, STTH10LCD06FP pinout, STTH10LCD06FP application, or STTH10LCD06FP equivalent, key selection criteria include reverse recovery time (35 ns), thermal resistance (6 °C/W junction-to-case), low leakage (5 µA at 25 °C), and insulated package rating (2000 VRMS).

Technical Context

This device is a unipolar PN-junction rectifier optimized for high-frequency switching in offline AC/DC converters. Its Turbo 2 process achieves low trr (35 ns typ) and low VF (1.3 V typ at 10 A, 150 °C) while maintaining high VRRM (600 V) and robust surge capability (100 A IFSM).

Thermal performance is defined by Rth(j-c) = 6 °C/W in TO-220FPAC with insulated construction, enabling reliable operation up to Tj(max) = 175 °C. The 2000 VRMS isolation supports safe mounting on heatsinks without additional insulation barriers.

Key Specifications

Pinout & Package

STTH10LCD06FP uses the TO-220FPAC package: insulated plastic housing with three leads, 2000 VRMS isolation between case and internal die, and recommended mounting torque of 0.55 N·m.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH10LCD06SB-TR, the FP variant trades higher Rth(j-c) for built-in 2000 VRMS isolation-critical for safety-certified displays. Versus MUR1060CT, it delivers 42% faster trr and 19% lower VF, directly reducing both conduction and switching losses in high-frequency SMPS.

Availability

STTH10LCD06FP is available at Aetrix Electronics and suitable for LCD panel backlight power supplies, flat-panel TV main SMPS, industrial monitor modules, and medical display auxiliary rails requiring stable component supply and long-term lifecycle support.

Supply support for STTH10LCD06FP 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 automotive, industrial, and consumer markets.

The STTH series belongs to ST's high-voltage rectifier product line, engineered specifically for energy-efficient, high-reliability power conversion in flat-panel display and consumer power electronics.

FAQ

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

The absolute maximum junction temperature is 175 °C, validated under steady-state conditions with Tc = 55 °C and IF(AV) = 10 A. Thermal runaway is prevented by limiting dPtot/dTj < 1/Rth(j-a), requiring proper heatsinking. Derating curves in Figure 1 confirm safe operation up to this limit.

Does the TO-220FPAC package require thermal compound when mounted to a heatsink?

Yes-thermal compound (e.g., silicone-based grease or phase-change pad) is required between the insulated metal tab and heatsink surface to minimize thermal resistance. The 6 °C/W Rth(j-c) rating assumes optimal interface contact; omitting compound increases effective Rth by ≥2.5 °C/W.

How does trr vary with temperature and dIF/dt?

trr decreases with rising junction temperature (e.g., 35 ns at 25 °C → 28 ns at 125 °C per Figure 6) and increases linearly with dIF/dt (e.g., 35 ns at 50 A/µs → 55 ns at 200 A/µs). This behavior is inherent to the Turbo 2 PN junction design and must be accounted for in snubber sizing.

Is STTH10LCD06FP suitable for PFC boost diode applications?

No-it is not optimized for continuous conduction mode (CCM) PFC. Its 35 ns trr and soft recovery profile suit DC-DC output rectification, but PFC requires diodes with lower Qrr (<25 nC) and tailored softness (e.g., STTH12S06D). Using this part in PFC would increase EMI and reduce efficiency above 50 kHz.