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

STMicroelectronics STTH3R06RL

Name: STTH3R06RL
Brand: STMicroelectronics
SKU: STTH3R06RL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STTH3R06RL

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: STTH3R06RL.pdf

Description:: DIODE GEN PURP 600V 3A DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:18,518

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Product details

Overview

STTH3R06RL from STMicroelectronics is a 600 V, 3 A ultrafast recovery rectifier diode in DO-201AD package, featuring 35 ns max reverse recovery time, 1.00 V typ forward voltage at 3 A, and 175 °C max junction temperature. It is engineered for free-wheeling, clamping, and snubbering in high-frequency switch-mode power supplies.

For engineers reviewing the STTH3R06RL datasheet, STTH3R06RL pinout, STTH3R06RL application, or STTH3R06RL equivalent, key selection criteria include reverse recovery speed, thermal resistance (20 °C/W junction-to-lead), soft recovery behavior, and ECOPACK-compliant lead-free packaging for industrial power conversion designs.

Technical Context

This planar silicon diode uses platinum doping to achieve low leakage (<3 µA at 25 °C) and stable fast switching across temperature. Its ultrafast trr (30–35 ns) and softness factor >1.5 minimize EMI and voltage overshoot during turn-off in hard-switched topologies.

The device operates with low conduction loss (P ≈ 1.03 × IF(AV) + 0.09 × IF²(RMS)) and supports surge currents up to 55 A (10 ms sinusoidal), making it suitable for transient-heavy auxiliary rails and flyback clamp circuits where thermal management and dynamic robustness are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	600 V - Withstands repetitive reverse voltage up to 600 V without breakdown in clamping/snubber applications.
IF(AV)	3 A - Continuous average forward current rating at TL = 80 °C on DO-201AD mount, defining steady-state power handling.
trr(max)	35 ns - Maximum reverse recovery time at IF = 1 A, dIF/dt = −50 A/µs, VR = 30 V; enables >100 kHz switching.
VF(typ)	1.00 V - Typical forward voltage drop at IF = 3 A and Tj = 150 °C; directly determines conduction loss in high-duty-cycle operation.
Rth(j-l)	20 °C/W - Junction-to-lead thermal resistance for DO-201AD package; defines heat transfer efficiency to PCB copper or heatsink tab.
IR(max)	100 µA - Max reverse leakage at Tj = 150 °C and VR = VRRM; ensures low standby loss in high-temperature auxiliary supplies.

Pinout & Package

DO-201AD axial-leaded package with cathode band marking; two-terminal device (Anode and Cathode). Lead length ≥15 mm must remain straight after bending per mechanical spec.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to switching node (e.g., MOSFET drain) in freewheeling path; carries full load current during diode conduction phase.
Cathode	Forward current exit / reverse blocking terminal	Connected to output rail or ground reference; sustains 600 V reverse bias and defines clamping voltage ceiling during turn-off.

Key Features

Feature	Design Value
Ultrafast recovery	trr ≤ 35 ns ensures minimal switching loss and reduced EMI in 100–500 kHz SMPS designs.
Platinum-doped junction	Enables <3 µA IR at 25 °C and stable trr over temperature-critical for high-reliability auxiliary supplies.
Low thermal resistance	Rth(j-l) = 20 °C/W allows direct PCB copper heatsinking without additional thermal interface material in space-constrained layouts.
ECOPACK compliance	Lead-free, RoHS-compliant construction meets industrial environmental requirements without derating or process change.

Applications

AC-DC Adapter Auxiliary Supply

Flyback Converter Clamp Diode

Use Scenario: Provides isolated +12 V bias for PWM controller IC in universal-input AC-DC adapters.

IC Role / Device Role / Timing Role: Freewheeling diode in auxiliary winding rectification circuit; conducts only during transformer reset phase.

Use Value: Low VF(1.00 V) reduces no-load power loss; soft recovery minimizes ringing-induced gate drive noise on primary-side MOSFET.

Use Scenario: Clamps voltage spike across primary MOSFET during flyback transformer demagnetization.

IC Role / Device Role / Timing Role: Transient voltage clamp; conducts briefly at end of MOSFET off-time to absorb leakage inductance energy.

Use Value: 35 ns trr limits clamp duration and prevents secondary conduction overlap; 600 V VRRM accommodates 400 V DC bus + margin.

Industrial SMPS Snubber Network

Motor Drive Brake Circuit

Use Scenario: Forms RCD snubber across IGBT collector-emitter in 3-phase inverter power stage.

IC Role / Device Role / Timing Role: Fast recovery diode in dissipative snubber; conducts only during IGBT turn-off edge.

Use Value: Low Qrr and soft recovery reduce snubber dissipation and suppress voltage overshoot beyond 600 V rating.

Use Scenario: Freewheels inductive current from DC bus when braking a brushed DC motor via H-bridge.

IC Role / Device Role / Timing Role: Bidirectional freewheeling path during PWM dead-time; handles 3 A continuous and 55 A surge.

Use Value: 175 °C Tj(max) and 55 A IFSM support intermittent high-current braking without thermal runaway.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L06RL	Lower VF (0.95 V typ at 3 A) but higher trr (50 ns max); same DO-201AD package and 600 V rating.	Better conduction efficiency but less suitable for >200 kHz switching due to slower recovery.	Select when thermal budget dominates over EMI constraints, e.g., low-frequency offline PSUs.
ES3J-E3/57T	Same 600 V/3 A rating, SMB package, trr = 35 ns, but VF = 1.7 V typ at 3 A and Rth(j-a) = 75 °C/W.	Higher conduction loss and worse thermal performance; requires larger PCB copper area for thermal relief.	Acceptable for cost-sensitive, lower-power auxiliary rails where board space permits thermal design margin.

Compared with STTH3R06RL, STTH3L06RL trades faster conduction for slower switching, while ES3J-E3/57T offers footprint compatibility at the expense of thermal and voltage-drop performance-making STTH3R06RL optimal for balanced high-frequency, high-reliability power stages.

Availability

STTH3R06RL is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, motor drive auxiliary rails, and telecom DC-DC converter snubbers requiring stable component supply and long-term manufacturability.

Supply support for STTH3R06RL 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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The STTHxR06 series targets high-efficiency, high-reliability power conversion systems-specifically optimized for ultrafast switching, low-loss freewheeling, and thermally demanding environments in compact power supplies.

FAQ

What is the maximum operating temperature for STTH3R06RL?

The STTH3R06RL has a maximum junction temperature (Tj) of +175 °C, verified per absolute ratings table in DS3697 Rev 4. This allows reliable operation in enclosed industrial power supplies where ambient temperatures reach 85 °C and thermal resistance to PCB copper is managed per DO-201AD layout guidelines.

Does STTH3R06RL have a soft recovery characteristic?

Yes-STTH3R06RL exhibits a softness factor >1.5 (typical at dIF/dt = 200 A/µs, Tj = 125 °C), confirmed by Figure 7 in DS3697. This reduces voltage overshoot and EMI during turn-off, making it suitable for clamping and snubber applications where abrupt current reversal must be avoided.

Can STTH3R06RL replace a standard FR-type diode in a 100 kHz flyback design?

Yes-its 35 ns trr and low Qrr enable efficient operation at 100 kHz and beyond, unlike standard FR diodes (trr > 100 ns). Measured conduction loss formula (P = 1.03 × IF(AV) + 0.09 × IF²(RMS)) confirms lower total loss versus FR107 under identical conditions.

Is STTH3R06RL lead-free and RoHS compliant?

Yes-STTH3R06RL is ECOPACK2-compliant and lead-free, as stated in Section 2 of DS3697 Rev 4. The DO-201AD package uses lead-free terminations and epoxy meeting UL94 V0, satisfying RoHS Directive 2011/65/EU without exemptions.

STTH3R06RL Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 3 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 3 µA @ 600 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

STTH3R06RL FAQ

1.How can I place an order for STTH3R06RL through Aetrix?

Please submit a Request for Quotation (RFQ) for STTH3R06RL 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 STTH3R06RL reliable?

The price and inventory of STTH3R06RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH3R06RL is usually 5 days.

3.What payment methods are accepted for STTH3R06RL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH3R06RL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STTH3R06RL?

STTH3R06RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STTH3R06RL 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 STTH3R06RL?

For technical support, including STTH3R06RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH3R06RL requirements.

6.How does Aetrix verify that STTH3R06RL is sourced from the original manufacturer or authorized distributors?

All STTH3R06RL 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 STTH3R06RL meets industry standards.

7.What is the process for return or replacement of STTH3R06RL?

All STTH3R06RL units undergo pre-shipment inspection (PSI). If there is an issue with STTH3R06RL, 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 STTH3R06RL part is unused and in its original packaging.

Return procedure for STTH3R06RL:

1.Submit a request within 90 days.

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

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