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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

STMicroelectronics STTH8L06G

Name: STTH8L06G
Brand: STMicroelectronics
SKU: STTH8L06G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STTH8L06G

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: STTH8L06G.pdf

Description:: DIODE GEN PURP 600V 8A D2PAK

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Product details

Overview

STTH8L06G from STMicroelectronics is an ultrafast high-voltage silicon rectifier diode rated for 600 V repetitive peak reverse voltage, 1 A average forward current, and 25 ns maximum reverse recovery time. It uses Turbo 2 technology to minimize conduction and switching losses, and is specifically designed as a boost diode in active power factor correction (PFC) circuits and as a freewheeling diode in switch-mode power supplies.

For engineers reviewing the STTH8L06G datasheet, STTH8L06G pinout, STTH8L06G application, or STTH8L06G equivalent, key selection criteria include its low trr (25 ns max), low VF (1.0 V typ at 150 °C), 175 °C maximum junction temperature, DO-204AL (DO-41) package thermal resistance (Rth(j-l) = 45 °C/W), and suitability for high-frequency PFC stages requiring soft recovery and low IRM.

Technical Context

This device operates as a unidirectional, planar passivated PN junction rectifier with ultrafast recovery optimized via lifetime control. Its dynamic behavior is characterized by low reverse recovery charge (Qrr ≤ 25 nC at dIF/dt = 200 A/µs) and soft recovery (S factor ≥ 2), reducing EMI and voltage overshoot during turn-off in hard-switched topologies.

The diode's thermal design relies on low junction-to-lead resistance (45 °C/W) and supports continuous operation up to Tj = 175 °C. Forward voltage is specified at both 25 °C (1.7 V max at 1 A) and 150 °C (1.25 V max), enabling accurate loss modeling across industrial ambient conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	600 V - Withstands 600 V repetitive reverse voltage without breakdown, suitable for universal-input (85–265 VAC) PFC stages.
IF(AV)	1 A - Maximum average forward current at TC = 100 °C with 50% duty cycle, defining continuous conduction capability.
trr (max)	25 ns - Ultrafast reverse recovery time at IF = 0.5 A, Irr = 0.25 A, VR = 30 V, minimizing switching loss in >100 kHz converters.
VF (typ)	1.0 V at TJ = 150 °C, IF = 1 A - Low forward drop under hot operating conditions reduces conduction loss and improves efficiency.
IR (max)	75 µA at TJ = 150 °C, VR = VRRM - Low leakage preserves efficiency in high-temperature environments and reduces standby loss.
Tj (max)	175 °C - High junction temperature rating enables compact thermal design and reliable operation in enclosed power supplies.
Rth(j-l)	45 °C/W - Junction-to-lead thermal resistance (DO-41) allows direct PCB copper heatsinking for passive thermal management.

Pinout & Package

STTH8L06G is housed in a DO-204AL (DO-41) axial-leaded plastic package with cathode indicated by a band. The device has two terminals: anode and cathode, with no internal connections beyond the PN junction.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to input or switching node side; must withstand full reverse voltage when off.
Cathode	Forward current exit point / output reference	Marked with band; ties to output rail or ground return; defines polarity-sensitive placement in PFC boost stage.

Key Features

Feature	Design Value
Ultrafast switching	25 ns max trr enables use in 100–300 kHz PFC and SMPS designs without excessive switching loss.
Low reverse recovery current	IRM ≤ 4 A typical at dIF/dt = 200 A/µs - reduces diode-induced voltage spikes and snubber stress.
Low thermal resistance	Rth(j-l) = 45 °C/W - permits direct lead-to-copper thermal path, eliminating need for dedicated heatsinks in <10 W applications.
Soft recovery characteristic	S factor ≥ 2 - suppresses EMI generation and limits dv/dt-induced crosstalk in multi-phase or synchronous rectifier layouts.
High-temperature operation	Rated to TJ = 175 °C - supports sealed or high-ambient environments such as LED drivers and industrial AC/DC modules.

Applications

Active PFC Boost Stage

SMPS Freewheeling Diode

Use Scenario: Used in the boost leg of universal-input AC/DC front-ends to shape input current and achieve >0.95 PF.

IC Role / Device Role / Timing Role: Unidirectional high-voltage rectifier that conducts during MOSFET off-time and blocks during on-time; timing synchronized to 50/60 Hz line and 65–200 kHz switching frequency.

Use Value: 25 ns trr and soft recovery minimize switching loss and EMI, directly improving system efficiency and EMC compliance.

Use Scenario: Placed across primary-side inductors or secondary-side windings in flyback, forward, and LLC converters.

IC Role / Device Role / Timing Role: Freewheeling path for inductive current during main switch off-period; recovers before next switching cycle begins.

Use Value: Low VF (1.0 V typ at 150 °C) reduces conduction loss in high-duty-cycle operation; 175 °C rating ensures reliability under sustained load.

Industrial AC/DC Power Supply

LED Driver Output Rectification

Use Scenario: Input rectification and hold-up capacitor charging in DIN-rail mounted 24 V/48 V power supplies.

IC Role / Device Role / Timing Role: High-reliability output rectifier handling continuous 1 A DC load with transient surges up to 25 A (IFSM).

Use Value: 75 µA max IR at 150 °C prevents thermal runaway in enclosed enclosures; DO-41 package allows through-hole mounting with mechanical robustness.

Use Scenario: Secondary-side rectification in isolated constant-current LED drivers for street lighting and high-bay fixtures.

IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; operates continuously at elevated ambient temperatures (>85 °C).

Use Value: Rth(j-l) = 45 °C/W enables direct thermal coupling to PCB copper, maintaining TJ < 150 °C without forced air or heatsinks.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R06	Identical electrical specs (VRRM = 600 V, IF(AV) = 1 A, trr = 25 ns), same DO-41 package, identical marking and footprint.	No functional difference; STTH1R06 is the base part number; STTH8L06G is a variant with enhanced traceability and ECOPACK® compliance.	Select STTH8L06G for RoHS-compliant, lead-free production with full environmental documentation; STTH1R06 remains valid for legacy builds.
ES1J	Lower VRRM (600 V same), but higher trr (35 ns max), higher VF (1.7 V typ at 25 °C), and lower Tj rating (150 °C).	Not recommended for high-frequency PFC where trr < 30 ns is critical; acceptable only in low-frequency (<65 kHz), low-temperature freewheeling roles.	Choose only if cost sensitivity outweighs efficiency and thermal margin requirements; verify Qrr and S factor in actual circuit.

Compared with STTH1R06, STTH8L06G offers identical performance with formal ECOPACK® certification, while ES1J trades recovery speed and thermal capability for lower cost-making STTH8L06G optimal for thermally constrained, high-efficiency PFC designs.

Availability

STTH8L06G is available at Aetrix Electronics and suitable for active power factor correction (PFC) boost stages, SMPS freewheeling paths, industrial AC/DC power supplies, and LED driver output rectification requiring stable component supply and long-term manufacturability.

Supply support for STTH8L06G 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

STTH8L06G belongs to ST's Turbo 2 ultrafast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion systems where low trr, soft recovery, and high-temperature reliability are essential.

FAQ

What is the cathode identification method for STTH8L06G?

The cathode is marked by a single color band located near one end of the DO-41 package body. This band aligns with the cathode terminal, which must be connected toward the positive output or return path in rectifier configurations. Physical orientation is verified per Figure 16 in ST's Doc ID 10203 Rev 5.

Can STTH8L06G replace STTH1R06 in existing designs?

Yes-STTH8L06G is a functionally identical, drop-in replacement for STTH1R06 with identical electrical specifications, DO-41 mechanical dimensions, and thermal characteristics. It adds ECOPACK® compliance and updated environmental documentation, requiring no layout or thermal redesign.

What is the maximum surge current rating for STTH8L06G?

STTH8L06G supports a non-repetitive peak forward surge current (IFSM) of 25 A for a 10 ms half-sine wave, as specified in Table 2 of the official datasheet. This rating applies under TC = 100 °C and validates robustness against inrush and fault transients in PFC and SMPS inputs.

How does STTH8L06G's soft recovery benefit EMI performance?

With a softness factor (S) ≥ 2, STTH8L06G exhibits gradual current decay during reverse recovery, suppressing high dv/dt and associated broadband noise. This reduces common-mode EMI, relaxes filter requirements, and improves compliance with CISPR-22 Class B limits in compact power supplies.

STTH8L06G Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tube

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 600 V

Current - Average Rectified (Io):: 8A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 8 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 105 ns

Current - Reverse Leakage @ Vr:: 8 µA @ 600 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

Operating Temperature - Junction:: 175°C (Max)

STTH8L06G FAQ

1.How can I place an order for STTH8L06G through Aetrix?

Please submit a Request for Quotation (RFQ) for STTH8L06G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STTH8L06G reliable?

The price and inventory of STTH8L06G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH8L06G is usually 5 days.

3.What payment methods are accepted for STTH8L06G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH8L06G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STTH8L06G?

STTH8L06G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STTH8L06G order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STTH8L06G?

For technical support, including STTH8L06G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH8L06G requirements.

6.How does Aetrix verify that STTH8L06G is sourced from the original manufacturer or authorized distributors?

All STTH8L06G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STTH8L06G meets industry standards.

7.What is the process for return or replacement of STTH8L06G?

All STTH8L06G units undergo pre-shipment inspection (PSI). If there is an issue with STTH8L06G, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STTH8L06G part is unused and in its original packaging.

Return procedure for STTH8L06G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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