STMicroelectronics STTH5L06RL

Overview

STTH5L06RL from STMicroelectronics is an ultrafast 600 V, 5 A high-voltage rectifier diode in TO-220FPAC insulated package, featuring 65 ns typical reverse recovery time, 0.85 V typical forward voltage at 150 °C, and 2000 VRMS insulation rating. It serves as a boost diode in continuous-conduction-mode PFC circuits and as a freewheeling diode in hard-switching SMPS.

For engineers reviewing the STTH5L06RL datasheet, STTH5L06RL pinout, STTH5L06RL application, or STTH5L06RL equivalent, key selection criteria include reverse recovery performance under dIF/dt = −50 A/µs, thermal resistance (Rth(j-c) = 6 °C/W), low IR (≤125 µA @ 150 °C), and ECOPACK®2 compliance for TO-220FPAC mounting.

Technical Context

This Turbo 2 silicon diode employs optimized carrier lifetime control to achieve ultrafast soft recovery with low Qrr (typ. 45 nC) and high softness factor (>1.0 at 125 °C), minimizing EMI and voltage overshoot in high-frequency switching converters. Its TO-220FPAC package provides 2000 VRMS galvanic isolation between cathode tab and leads.

Designed for operation up to 175 °C junction temperature, it delivers stable conduction loss (P = 0.89 × IF(AV) + 0.033 × IF²(RMS)) and maintains low trr drift across temperature - typ. 65 ns at 25 °C rising to ~95 ns at 150 °C under standardized test conditions.

Key Specifications

Pinout & Package

STTH5L06RL is housed in TO-220FPAC (Full-Package AC) - an insulated variant of TO-220 with electrically isolated metal tab rated for 2000 VRMS. The package uses epoxy meeting UL 94 V0 and supports screw-mounting with recommended 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 STTH8L06D and IXYS MUR560E, STTH5L06RL trades 3 A lower average current rating for guaranteed 2000 VRMS isolation and simplified mechanical integration - making it optimal for Class I AC-DC systems where safety certification and assembly yield are prioritized over marginal conduction loss reduction.

Availability

STTH5L06RL is available at Aetrix Electronics and suitable for server power supplies, industrial AC-DC adapters, telecom rectifier modules, and motor drive snubber networks requiring stable component supply, long-term lifecycle support, and certified insulation integrity.

Supply support for STTH5L06RL 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, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.

STTH5L06RL belongs to ST's Turbo 2 ultrafast diode product line, engineered specifically for high-efficiency, high-reliability power conversion in CCM PFC and hard-switching SMPS where low Qrr, soft recovery, and thermal robustness are critical.

FAQ

What is the maximum recommended mounting torque for the STTH5L06RL TO-220FPAC package?

The datasheet specifies a recommended torque value of 0.55 N·m and a maximum torque of 0.7 N·m for STTH5L06RL's TO-220FPAC package. Exceeding 0.7 N·m risks damaging the internal bond wires or deforming the leadframe, potentially causing premature failure or increased thermal resistance. Use a calibrated torque screwdriver for repeatable assembly.

Does STTH5L06RL require a thermal interface material when mounted to a heatsink?

No - the TO-220FPAC package features an electrically insulated metal tab rated for 2000 VRMS, allowing direct metal-to-metal contact with the heatsink without thermal pads or insulators. However, a thin layer of thermal grease (e.g., 0.1 mm thickness) is still recommended to fill microscopic air gaps and reduce Rth(j-hs) by up to 15%.

How does STTH5L06RL's reverse recovery behavior change at elevated temperature?

At Tj = 150 °C, trr increases from 65 ns (typ, 25 °C) to 95 ns (max), while IR rises from 5 µA to 125 µA at VR = 600 V. The softness factor remains >1.0, preserving EMI performance. These shifts are fully characterized in Figures 7 and 10 of the datasheet and are factored into the device's 175 °C max junction rating.

Can STTH5L06RL replace STTH5L06 in a DO-201AD footprint?

No - STTH5L06RL is packaged in TO-220FPAC, which has different mechanical dimensions, lead spacing, and mounting requirements than the axial DO-201AD package of STTH5L06. The two share identical electrical specs but are not mechanically interchangeable; PCB redesign and thermal validation are required for substitution.