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

STMicroelectronics STTH2R06S

Name: STTH2R06S
Brand: STMicroelectronics
SKU: STTH2R06S
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STTH2R06S

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: STTH2R06S.pdf

Description:: DIODE GEN PURP 600V 2A SMC

Quantity:: RFQ Add To RFQ list

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Inventory:16

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Product details

Overview

STTH2R06S from STMicroelectronics is an ultrafast recovery silicon rectifier diode in SMC package, rated for 600 V repetitive peak reverse voltage, 2 A average forward current, and 35 ns typical reverse recovery time. It uses ST Turbo 2 planar Pt-doping technology and is optimized for high-frequency inverters, freewheeling, and polarity protection circuits.

For engineers reviewing the STTH2R06S datasheet, STTH2R06S pinout, STTH2R06S application, or STTH2R06S equivalent, key selection criteria include junction temperature capability (175 °C), low conduction loss (VF = 1.0 V typ. at 150 °C), thermal resistance (Rth(j-l) = 20 °C/W), and SMC surface-mount compatibility for power density-critical designs.

Technical Context

The STTH2R06S is a planar-passivated, platinum-doped ultrafast diode engineered to minimize both conduction and switching losses. Its 35 ns typical trr and negligible stored charge enable efficient operation in hard-switched SMPS topologies above 100 kHz.

Designed for unidirectional DC power conversion, it supports continuous forward conduction up to 2 A (at TL = 115 °C) and withstands surge currents up to 30 A (tp = 10 ms). The SMC package provides enhanced thermal dissipation versus SMA/SMB variants, with Rth(j-l) = 20 °C/W and lead-to-ambient performance scalable via PCB copper area.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	600 V - Withstands repetitive reverse voltage up to 600 V without breakdown, suitable for 400 V DC bus applications with safety margin.
IF(AV)	2 A - Maximum average forward current at case temperature ≤115 °C, defining continuous power handling in thermally managed layouts.
trr (typ)	35 ns - Ultrafast reverse recovery enables minimal switching loss and reduced EMI in high-frequency converters (e.g., 100–500 kHz).
VF (typ)	1.0 V at Tj = 150 °C - Low forward drop reduces conduction loss and improves efficiency under elevated thermal stress.
Tj max	175 °C - High junction temperature rating allows operation in compact, high-power-density enclosures without derating.
Rth(j-l)	20 °C/W - Junction-to-lead thermal resistance enables direct PCB heat sinking through SMC leads, critical for thermal reliability.

Pinout & Package

STTH2R06S is housed in an SMC (DO-214AB) surface-mount plastic package with cathode band marking. The device has two terminals: anode and cathode, with no internal connections beyond the rectifying junction.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to input/high-side of switching node; must handle full load current and transient surges (30 A IFSM).
Cathode	Forward current exit point	Marked by band; connects to output/low-side; serves as primary thermal path to PCB copper via soldered lead.

Key Features

Feature	Design Value
Ultrafast recovery	35 ns typical trr ensures minimal switching loss and reduced snubber requirements in high-frequency SMPS.
High-temperature operation	175 °C maximum junction temperature supports reliable performance in sealed or convection-limited industrial environments.
Low VF at high Tj	1.0 V typical forward voltage at 150 °C maintains efficiency under thermal stress, reducing heatsink size.
SMC package thermal performance	20 °C/W junction-to-lead resistance enables effective PCB-based thermal management without discrete heatsinks.

Applications

Industrial SMPS

Motor Drive Freewheeling

Use Scenario: 400 V DC bus rectification and output stage freewheeling in 1–3 kW industrial switch-mode power supplies.

IC Role / Device Role / Timing Role: Ultrafast rectifier providing low-loss bidirectional current path during MOSFET dead-time and flyback energy recovery.

Use Value: 35 ns trr minimizes reverse recovery current overlap with high-side switch turn-on, reducing switching loss and EMI generation.

Use Scenario: Bidirectional energy recirculation across IGBT or MOSFET H-bridge outputs in servo and variable-frequency drives.

IC Role / Device Role / Timing Role: Freewheeling diode clamping inductive kickback during PWM transitions, operating at 10–20 kHz switching frequencies.

Use Value: 175 °C Tj rating and 20 °C/W Rth(j-l) allow sustained operation under high ambient temperatures common in enclosed motor control cabinets.

Solar Microinverter DC Link

Polarity Protection Circuit

Use Scenario: DC link rectification and boost-stage freewheeling in single-phase photovoltaic microinverters with 600 V-rated topology.

IC Role / Device Role / Timing Role: High-voltage ultrafast diode enabling >96% peak efficiency in interleaved boost converters operating at 150–250 kHz.

Use Value: 600 V VRRM provides sufficient margin over 450 V PV string open-circuit voltage, while low VF preserves system-level efficiency.

Use Scenario: Reverse-polarity input protection in 12–48 V DC-powered industrial controllers and IoT gateways.

IC Role / Device Role / Timing Role: Series-connected blocking diode preventing damage during incorrect battery or adapter connection.

Use Value: 2 A IF(AV) and low 1.0 V VF ensure minimal voltage drop and self-heating during continuous operation, avoiding brownout risk.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R06U	SMB package; Rth(j-l) = 25 °C/W; same electrical specs; 0.11 g weight	Lower thermal performance than SMC; suited for space-constrained but lower-power (<1.5 kW) designs	Select when board real estate limits SMC footprint but thermal budget permits higher junction rise.
STTH2R06A	SMA package; Rth(j-l) = 30 °C/W; identical VRRM/IF(AV)/trr; 0.068 g weight	Higher thermal resistance limits continuous current in high-ambient environments	Choose for cost-sensitive, lower-duty-cycle applications where peak power dominates over thermal steady-state.

Compared with STTH2R06U and STTH2R06A, the STTH2R06S delivers superior thermal management (20 °C/W vs. 25/30 °C/W) and higher surge current tolerance (30 A vs. 30 A same, but better thermal stability), making it optimal for high-reliability, high-power-density industrial converters.

Availability

STTH2R06S is available at Aetrix Electronics and suitable for industrial SMPS, motor drive freewheeling, and solar microinverter DC link applications requiring stable component supply and long-term manufacturing continuity.

Supply support for STTH2R06S 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 STTH2R06S specifically developed for ultrafast, high-temperature rectification in compact, high-frequency power systems.

FAQ

What is the maximum allowable case temperature for continuous operation of STTH2R06S?

The STTH2R06S is rated for continuous average forward current of 2 A at a lead temperature (TL) of 115 °C. This corresponds to a practical case temperature limit of approximately 110–115 °C under standard PCB mounting conditions with adequate copper pour. Exceeding this requires derating per the datasheet's IF(AV) vs. TL curve.

Does STTH2R06S have a specified junction-to-case thermal resistance (Rth(j-c))?

No, the official datasheet specifies only junction-to-lead (Rth(j-l) = 20 °C/W) and junction-to-ambient (Rth(j-a)) values dependent on PCB copper area. Rth(j-c) is not published; thermal design must use Rth(j-l) with measured or simulated lead-to-PCB thermal path for accuracy.

Can STTH2R06S replace a standard FR107 diode in a 600 V flyback converter?

Yes - STTH2R06S offers significantly faster recovery (35 ns vs. ~500 ns for FR107) and lower VF (1.0 V vs. ~1.3 V), reducing switching loss and improving efficiency. However, layout must accommodate its larger SMC footprint and ensure adequate thermal relief, as FR107 typically uses DO-41 axial packaging.

Is STTH2R06S RoHS-compliant and halogen-free?

Yes - STTH2R06S is manufactured in ST's ECOPACK®2-compliant SMC package, meeting RoHS Directive 2011/65/EU and halogen-free requirements per IEC 61249-2-21. Full compliance documentation is available via ST's quality portal using order code STTH2R06S.

STTH2R06S Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-214AB, SMC

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:: 1.7 V @ 2 A

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

Reverse Recovery Time (trr):: 50 ns

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

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMC

Operating Temperature - Junction:: -40°C ~ 175°C

STTH2R06S FAQ

1.How can I place an order for STTH2R06S through Aetrix?

Please submit a Request for Quotation (RFQ) for STTH2R06S 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 STTH2R06S reliable?

The price and inventory of STTH2R06S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH2R06S is usually 5 days.

3.What payment methods are accepted for STTH2R06S?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH2R06S transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STTH2R06S?

STTH2R06S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STTH2R06S 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 STTH2R06S?

For technical support, including STTH2R06S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH2R06S requirements.

6.How does Aetrix verify that STTH2R06S is sourced from the original manufacturer or authorized distributors?

All STTH2R06S 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 STTH2R06S meets industry standards.

7.What is the process for return or replacement of STTH2R06S?

All STTH2R06S units undergo pre-shipment inspection (PSI). If there is an issue with STTH2R06S, 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 STTH2R06S part is unused and in its original packaging.

Return procedure for STTH2R06S:

1.Submit a request within 90 days.

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

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