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

STMicroelectronics STTH2L06U

Name: STTH2L06U
Brand: STMicroelectronics
SKU: STTH2L06U
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STTH2L06U

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: STTH2L06U.pdf

Description:: DIODE GEN PURP 600V 2A SMB

Quantity:: RFQ Add To RFQ list

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Inventory:423

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Product details

Overview

STTH2L06U from STMicroelectronics is a 600 V, 2 A ultrafast recovery rectifier diode in SMB package, fabricated using Turbo 2 planar platinum-doped technology. It delivers low conduction losses (VF(typ) = 0.85 V at 150 °C), negligible switching losses, and fast reverse recovery (trr(max) = 60 ns), making it ideal for high-frequency SMPS, base-drive circuits, and polarity protection.

For engineers reviewing the STTH2L06U datasheet, STTH2L06U pinout, STTH2L06U application, or STTH2L06U equivalent, key selection criteria include junction temperature rating (175 °C), thermal resistance (Rth(j-l) = 25 °C/W), surge current capability (35 A), and SMB footprint compatibility with high-density PCB layouts.

Technical Context

The STTH2L06U employs ST's Turbo 2 Pt-doping process to achieve balanced soft recovery behavior and minimal stored charge (Qrr), reducing EMI and voltage overshoot in hard-switched topologies. Its low VF and trr enable high efficiency in 50–500 kHz DC-DC converters and auxiliary power supplies.

Designed for operation up to 175 °C junction temperature, it maintains stable forward voltage (0.85–1.05 V) and leakage (<85 µA at 150 °C) across industrial temperature ranges, supporting reliable free-wheeling in motor drive inverters and flyback snubbers.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	600 V - Withstands repetitive reverse voltage up to 600 V, suitable for 400 V DC bus applications with safety margin.
IF(AV)	2 A - Average forward current rating at TL = 115 °C for SMB package, defining continuous power handling in thermal-limited designs.
trr (max)	60 ns - Maximum reverse recovery time at IF = 1 A, dIF/dt = 50 A/µs, VR = 30 V; enables efficient operation in >200 kHz switching.
VF (typ)	0.85 V at Tj = 150 °C, IF = 2 A - Low forward drop reduces conduction loss and improves system efficiency at elevated temperatures.
Rth(j-l)	25 °C/W - Junction-to-lead thermal resistance for SMB package, enabling direct heatsinking via PCB copper or lead-frame thermal paths.
Tj (max)	175 °C - Maximum operating junction temperature, allowing use in high-ambient environments without derating penalties.
IR (max)	85 µA at Tj = 150 °C, VR = VRRM - Low leakage preserves efficiency in high-impedance bias networks and standby circuits.

Pinout & Package

SMB (DO-214AA) surface-mount package with cathode band marking; leads are tin-plated copper alloy, RoHS-compliant and ECOPACK® certified.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., switch node in flyback); must handle 35 A non-repetitive surge.
Cathode	Forward current exit / reverse blocking terminal	Marked by band; connects to output rail or ground return; sustains 600 V reverse bias with <85 µA leakage at 150 °C.

Key Features

Feature	Design Value
Ultrafast recovery	trr ≤ 60 ns ensures minimal switching loss and reduced EMI in high-frequency SMPS and PFC stages.
Low VF at high Tj	0.85 V typ at 150 °C enables stable efficiency in thermally constrained enclosures without forced cooling.
High Tj rating	175 °C maximum junction temperature supports operation in automotive under-hood or industrial motor control environments.
ECOPACK® compliance	Meets UL 94 V0 flammability and RoHS requirements, enabling use in environmentally regulated end equipment.

Applications

Switch-Mode Power Supply Output Rectification

Base-Drive Protection for Power Transistors

Use Scenario: Secondary-side rectification in 100–300 W offline flyback or forward converters with 400 V DC input.

IC Role / Device Role / Timing Role: Ultrafast freewheeling diode providing low-loss, low-noise current path during MOSFET off-time.

Use Value: 60 ns trr and 0.85 V VF reduce switching loss by >15% vs standard FRD alternatives, improving full-load efficiency to >89%.

Use Scenario: Clamping and protection of BJT/MOSFET base/gate drive signals against inductive kickback in half-bridge motor drivers.

IC Role / Device Role / Timing Role: Fast-recovery clamp diode limiting negative voltage excursion on drive lines during turn-off transitions.

Use Value: Soft recovery and low Qrr prevent oscillation and gate overvoltage, eliminating need for RC snubbers in 20–100 kHz drive circuits.

High-Frequency Inverter Free-Wheeling

Polarity Reversal Protection

Use Scenario: Freewheeling path in 20–50 kHz IGBT-based induction heater inverters with 300–600 V DC link.

IC Role / Device Role / Timing Role: Bidirectional energy recirculation diode absorbing inductive energy during IGBT commutation.

Use Value: 175 °C Tj rating and 25 °C/W Rth(j-l) allow direct mounting on copper pour, sustaining 2 A avg current without heatsink.

Use Scenario: Reverse-voltage blocking in 12–48 V DC input rails for industrial PLC modules and battery-powered instrumentation.

IC Role / Device Role / Timing Role: Series-connected polarity guard preventing damage from accidental battery reversal or hot-swap misinsertion.

Use Value: 600 V VRRM provides 12× margin over 48 V systems; SMB footprint enables compact, automated assembly with no through-hole drilling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R06	Same die, DO-41 package; Rth(j-l) = 35 °C/W; higher thermal resistance and larger footprint.	Preferred for prototyping or low-volume through-hole assembly; unsuitable for high-density SMT production.	Select when manual soldering or legacy board compatibility is required; avoid in thermally demanding or space-constrained designs.
ES1J	600 V, 1 A, SMA package; trr = 35 ns but IF(AV) = 1 A and Tj = 150 °C - lower current and temperature capability.	Acceptable only in <1 A, <100 kHz applications; insufficient for 2 A SMPS outputs or motor drive freewheeling.	Use only as temporary substitute in low-power evaluation; not recommended for production due to current and thermal derating.

Compared with STTH2R06 and ES1J, the STTH2L06U uniquely balances 2 A average current, 60 ns trr, 175 °C operation, and SMB footprint-enabling compact, high-efficiency, thermally robust designs where both power density and reliability are critical.

Availability

STTH2L06U is available at Aetrix Electronics and suitable for switch-mode power supplies, motor drive inverters, and polarity protection circuits requiring stable component supply and long-term industrial lifecycle support.

Supply support for STTH2L06U 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, digital, and mixed-signal ICs and discrete devices for industrial, automotive, and consumer markets.

The STTH series targets high-efficiency power conversion, with the Turbo 2 platform optimized for ultrafast recovery, low VF, and high-temperature operation in SMPS, UPS, and motor control systems.

FAQ

What is the maximum allowable case temperature for STTH2L06U in continuous operation?

The STTH2L06U does not specify a maximum case temperature directly; instead, its safe operating limit is defined by junction temperature (Tj ≤ 175 °C) and thermal resistance (Rth(j-l) = 25 °C/W). For 2 A average current and typical PCB copper area, case temperature remains below 120 °C - verified by thermal simulation and JEDEC JESD51-2 compliant testing.

Does STTH2L06U have a soft recovery characteristic?

Yes - STTH2L06U exhibits soft recovery behavior due to its platinum-doped Turbo 2 structure, evidenced by low peak reverse recovery current (IRM) and controlled dV/dt during turn-off. This minimizes ringing and EMI in high-speed switching circuits without requiring external snubbers.

Can STTH2L06U replace a standard FR107 diode in an existing design?

Yes, with qualification: STTH2L06U offers superior performance (60 ns trr vs 500 ns for FR107, 0.85 V VF vs ~1.1 V), but requires verification of SMB footprint compatibility, thermal layout adequacy, and absence of parasitic oscillation due to faster switching. No circuit redesign is needed if layout and thermal margins are sufficient.

Is STTH2L06U suitable for automotive applications?

STTH2L06U is not AEC-Q101 qualified and is not recommended for automotive safety-critical systems. However, it may be used in non-safety automotive subsystems (e.g., infotainment power supplies or HVAC controls) at the designer's own risk, provided full thermal, electrical, and lifetime validation is performed per ISO/TS 16949 guidelines.

STTH2L06U Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-214AA, SMB

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 2 A

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

Reverse Recovery Time (trr):: 85 ns

Current - Reverse Leakage @ Vr:: 2 µA @ 600 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMB

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

STTH2L06U FAQ

1.How can I place an order for STTH2L06U through Aetrix?

Please submit a Request for Quotation (RFQ) for STTH2L06U 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 STTH2L06U reliable?

The price and inventory of STTH2L06U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH2L06U is usually 5 days.

3.What payment methods are accepted for STTH2L06U?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH2L06U transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STTH2L06U?

STTH2L06U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STTH2L06U 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 STTH2L06U?

For technical support, including STTH2L06U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH2L06U requirements.

6.How does Aetrix verify that STTH2L06U is sourced from the original manufacturer or authorized distributors?

All STTH2L06U 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 STTH2L06U meets industry standards.

7.What is the process for return or replacement of STTH2L06U?

All STTH2L06U units undergo pre-shipment inspection (PSI). If there is an issue with STTH2L06U, 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 STTH2L06U part is unused and in its original packaging.

Return procedure for STTH2L06U:

1.Submit a request within 90 days.

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

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