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STMicroelectronics STTH3R06S
- Part No.:
- STTH3R06S
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
STTH3R06S.pdf
- Description:
- DIODE GEN PURP 600V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:34,002
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Product details
Overview
STTH3R06S from STMicroelectronics is a 600 V, 3 A ultrafast recovery rectifier diode in SMC 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, snubbering, and demagnetization in high-frequency switch-mode power supplies.
For engineers reviewing the STTH3R06S datasheet, STTH3R06S pinout, STTH3R06S application, or STTH3R06S equivalent, key selection criteria include reverse recovery time under dIF/dt stress, thermal resistance (Rth(j-l) = 20 °C/W), softness factor for EMI control, and ECOPACK-compliant lead-free SMC packaging for industrial-grade reliability.
Technical Context
This planar platinum-doped silicon diode uses ST's ultrafast high-voltage technology to achieve low leakage (<3 µA @ 25 °C), low thermal resistance, and stable trr performance across temperature (trr ≤ 35 ns at 25 °C, ≤ 160 ns at 125 °C). Its soft recovery behavior minimizes voltage overshoot and ringing in hard-switched topologies.
The device operates with VF = 1.0–1.25 V at 150 °C and IF = 3 A, enabling efficient conduction loss calculation via P = 1.03 × IF(AV) + 0.09 × IF²(RMS). Junction-to-lead thermal resistance of 20 °C/W supports high-power density PCB layouts with minimal copper area.
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) | 3 A - Average forward current rating at TL = 80 °C on SMC package, defining continuous conduction capability. |
| trr(max) | 35 ns - Maximum reverse recovery time at IF = 1 A, dIF/dt = −50 A/µs, VR = 30 V; critical for <100 kHz switching efficiency. |
| VF(typ.) | 1.00 V - Typical forward voltage at IF = 3 A and Tj = 25 °C; directly determines conduction loss in power stage. |
| Rth(j-l) | 20 °C/W - Junction-to-lead thermal resistance for SMC package; enables direct heatsinking via PCB copper or metal-core board. |
| IR(max) | 100 µA - Max reverse leakage at Tj = 150 °C and VR = VRRM; ensures low standby loss in high-temp environments. |
| Tj(max) | 175 °C - Maximum allowable junction temperature; supports operation in sealed enclosures or high ambient conditions. |
Pinout & Package
STTH3R06S is housed in an SMC (DO-214AB) surface-mount package with two terminals: Anode and Cathode. The package features gull-wing leads, lead-free finish, and UL94 V0 epoxy molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to switching node (e.g., MOSFET drain) in freewheeling path; must withstand surge currents up to 45 A (non-repetitive). |
| Cathode | Forward current exit point | Connected to output rail or ground return; carries full load current and defines reference for reverse voltage blocking. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery | trr ≤ 35 ns ensures minimal switching loss and reduced EMI in 50–100 kHz SMPS designs. |
| Platinum doping | Enables low leakage (<3 µA @ 25 °C) and stable trr over temperature without lifetime degradation. |
| Planar technology | Provides uniform junction characteristics, tight parameter distribution, and high reliability under thermal cycling. |
| ECOPACK compliance | Lead-free SMC package meets RoHS and halogen-free requirements for industrial and consumer end equipment. |
| Soft recovery | Softness factor >1.0 (typical) suppresses voltage spikes during turn-off, reducing snubber component stress. |
Applications
| AC-DC Adapter Secondary Rectification | DC-DC Converter Freewheeling Diode |
|---|---|
|
Use Scenario: 65 W laptop adapter with active clamp flyback topology operating at 65 kHz. IC Role / Device Role / Timing Role: Freewheeling diode conducting during MOSFET off-time; handles 3 A average current with 100 ns transient dIF/dt. Use Value: 35 ns trr and soft recovery minimize voltage overshoot across primary clamp capacitor, reducing stress on MOSFET and improving efficiency by ~0.8%. |
Use Scenario: 12 V → 3.3 V isolated buck-derived converter in telecom shelf management system. IC Role / Device Role / Timing Role: Output rectifier in synchronous rectified forward converter; conducts 3 A DC with 200 kHz ripple content. Use Value: Rth(j-l) = 20 °C/W allows direct thermal coupling to 2 oz copper plane, maintaining Tj < 125 °C without heatsink at full load. |
| Snubber Network Clamp Diode | Inductive Load Demagnetization |
|
Use Scenario: RCD snubber across IGBT in 3 kW motor drive inverter leg. IC Role / Device Role / Timing Role: Clamp diode absorbing inductive energy during IGBT turn-off; subjected to 400 V reverse and 15 A peak surge. Use Value: 600 V VRRM and 45 A IFSM rating ensure robust clamping without avalanche breakdown or thermal runaway. |
Use Scenario: Solenoid driver in industrial PLC output module with 24 V, 2 A inductive load. IC Role / Device Role / Timing Role: Demagnetization path for coil energy dissipation when MOSFET switches off; recovers within 35 ns to prevent cross-conduction. Use Value: Low VF (1.00 V typ) reduces power loss during demag phase; platinum doping prevents parameter drift after 10⁶ cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | Lower VF (0.95 V typ at 3 A) but higher trr (50 ns max); same SMC package and 600 V rating. | Better conduction loss, worse switching loss; suited for lower-frequency (<50 kHz), high-current apps where thermal headroom is limited. | Select when average forward loss dominates system efficiency and EMI constraints are relaxed. |
| VS-3EYH06-M3 | Same 600 V/3 A rating, 30 ns trr, but SMB package (higher Rth(j-l) = 25 °C/W); VF = 1.15 V typ. | Smaller footprint but higher thermal resistance; requires larger copper area or forced air cooling above 2 A. | Choose for space-constrained boards where layout area is prioritized over thermal margin. |
Compared with STTH3R06S, STTH3L06S trades faster conduction for slower recovery, while VS-3EYH06-M3 offers tighter trr in a thermally less efficient package-making STTH3R06S optimal for balanced 50–100 kHz industrial SMPS where both loss types matter.
Availability
STTH3R06S is available at Aetrix Electronics and suitable for AC-DC adapters, DC-DC converters, and motor drive snubbers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for STTH3R06S 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.
STTH3R06S belongs to ST's high-voltage ultrafast diode product line, developed specifically for high-efficiency, high-reliability power conversion in industrial and computing power supplies.
FAQ
What is the maximum surge current rating for STTH3R06S?
The STTH3R06S has a non-repetitive surge forward current (IFSM) rating of 45 A for tp = 10 ms sinusoidal waveform, verified per IEC 61000-4-5 surge immunity testing conditions. This rating applies to the SMC package at Tj = 25 °C and supports robust handling of inrush and fault transients in power supply outputs.
Does STTH3R06S require a heatsink in typical 3 A applications?
No external heatsink is required for STTH3R06S at 3 A average current if mounted on ≥1 cm² of 2 oz copper per lead with thermal vias. Its Rth(j-l) = 20 °C/W and Rth(j-a) = 75 °C/W allow junction temperatures below 125 °C under natural convection, provided PCB layout follows ST's recommended footprint and copper area guidelines.
How does platinum doping improve long-term reliability?
Platinum doping stabilizes the minority carrier lifetime in the silicon base region, preventing parameter drift under thermal stress and high-current operation. This results in consistent trr and IR performance over 10+ years of field operation-critical for industrial power supplies where maintenance intervals exceed five years.
Can STTH3R06S replace standard FR-type diodes in existing designs?
Yes-STTH3R06S can directly replace FR306 or similar 600 V/3 A fast recovery diodes in SMC footprint, delivering measurable improvements: 35 ns trr vs. 150–250 ns for FR diodes reduces switching loss by >60%, lowers EMI filter cost, and improves light-load efficiency without changing PCB layout or thermal design.
STTH3R06S 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):
- 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:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- 175°C (Max)
STTH3R06S FAQ
1.How can I place an order for STTH3R06S through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH3R06S 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 STTH3R06S reliable?
The price and inventory of STTH3R06S are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH3R06S is usually 5 days.
3.What payment methods are accepted for STTH3R06S?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH3R06S transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH3R06S?
STTH3R06S orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH3R06S 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 STTH3R06S?
For technical support, including STTH3R06S datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH3R06S requirements.
6.How does Aetrix verify that STTH3R06S is sourced from the original manufacturer or authorized distributors?
All STTH3R06S 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 STTH3R06S meets industry standards.
7.What is the process for return or replacement of STTH3R06S?
All STTH3R06S units undergo pre-shipment inspection (PSI). If there is an issue with STTH3R06S, 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 STTH3R06S part is unused and in its original packaging.
Return procedure for STTH3R06S:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STTH3R06S Tags
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