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STMicroelectronics STTH15RQ06W
- Part No.:
- STTH15RQ06W
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- DO-247-2 (Straight Leads)
- Datasheet:
-
STTH15RQ06W.pdf
- Description:
- DIODE GEN PURP 600V 15A DO247
- Quantity:
- Payment:
- Shipping:
Inventory:3,405
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Product details
Overview
STTH15RQ06W from STMicroelectronics is a 600 V, 15 A ultrafast recovery rectifier diode in DO-247 package, optimized for high-voltage secondary rectification in LLC full-bridge topologies. It delivers soft reverse recovery (trr ≤ 25 ns at 25 °C), low VF (1.45 V max at 15 A/150 °C), and high junction temperature capability (Tj,max = 175 °C), enabling efficient PFC and UPS output stages.
For engineers reviewing the STTH15RQ06W datasheet, STTH15RQ06W pinout, STTH15RQ06W application, or STTH15RQ06W equivalent, key selection criteria include reverse recovery softness factor, thermal resistance (Rth(j-c) = 1.5 °C/W), creepage distance (5.38 mm min. anode-to-cathode with coating), and conduction loss modeling via P = 1.05 × IF(AV) + 0.053 × IF²(RMS).
Technical Context
This diode employs a planar epitaxial silicon structure with tailored lifetime control to achieve ultrafast switching with soft recovery-critical for minimizing EMI and voltage overshoot in high-frequency resonant converters. Its low QRR (250 nC typical) and controlled IRM (6–8 A at 125 °C) reduce reverse recovery losses during hard commutation.
The DO-247 package provides enhanced creepage (5.38 mm anode-to-cathode with top coating per IEC 60664-1) and low thermal resistance (1.5 °C/W junction-to-case), supporting high-power density designs in air-conditioning inverters and EV charging stations where isolation and thermal management are stringent.
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 systems with safety margin. |
| IF(AV) | 15 A - Average forward current rating at TC = 115 °C, defining continuous conduction capability in rectifier applications. |
| VF (max) | 1.45 V at 15 A / 150 °C - Directly determines conduction loss (Pcond ≈ IF × VF) under worst-case thermal conditions. |
| trr (max) | 25 ns at IF = 0.5 A, IR = 1 A, Irr = 0.25 A - Enables operation up to ~2 MHz switching frequencies without excessive turn-off loss. |
| Rth(j-c) | 1.5 °C/W - Quantifies thermal path efficiency from junction to case; enables accurate heatsink sizing for 50 W dissipation at ΔT = 75 K. |
| IR (max) | 400 µA at Tj = 150 °C - Low leakage preserves efficiency in high-temperature PFC boost stages and reduces standby loss. |
| QRR | 250 nC typical - Key metric for reverse recovery energy loss (Erec ≈ QRR × VR); critical for optimizing snubber design. |
Pinout & Package
STTH15RQ06W uses the DO-247 package: a through-hole, isolated-mount power diode housing with anode and cathode leads on opposite sides of the molded epoxy body. The package features UL94 V0 epoxy, 0.8 N·m recommended mounting torque, and 5.38 mm minimum creepage between anode and cathode when top-coated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to high-side switch node (e.g., LLC transformer secondary center-tap or bridge leg); must withstand full VRRM during reverse bias. |
| Cathode (K) | Forward current exit point | Connected to output rail or ground return; carries full load current and defines reference for voltage sensing in synchronous rectification feedback loops. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast soft recovery | trr ≤ 25 ns with low IRM (6–8 A) and high softness factor (>1.0), reducing EMI and voltage spikes in LLC resonant converters. |
| High-temperature operation | Tj,max = 175 °C enables reliable operation in enclosed environments like HVAC inverters without derating at ambient >85 °C. |
| Low thermal resistance | Rth(j-c) = 1.5 °C/W allows direct mounting to heatsinks, supporting >50 W continuous dissipation with modest thermal interface materials. |
| Enhanced creepage | 5.38 mm anode-to-cathode creepage (with top coating) meets reinforced insulation requirements for 600 V AC mains-connected equipment per IEC 62368-1. |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant construction with lead-free terminations, satisfying environmental mandates for industrial and consumer power supplies. |
Applications
| LLC Resonant Converter Output Rectification | Industrial UPS DC Bus Clamping |
|---|---|
|
Use Scenario: High-efficiency secondary-side rectification in 1–3 kW server PSU LLC full-bridge topologies operating at 200–500 kHz. IC Role / Device Role / Timing Role: Ultrafast freewheeling diode conducting during transformer reset phase; recovers before next switching cycle to minimize overlap loss. Use Value: Soft trr and low QRR reduce switching node ringing and EMI filter size by >30% versus standard fast recovery diodes. |
Use Scenario: Bidirectional clamping of DC link transients in three-phase online UPS systems with 400–800 V DC bus. IC Role / Device Role / Timing Role: Transient voltage suppressor during IGBT turn-off; conducts surge current within <25 ns to limit dv/dt stress on bus capacitors. Use Value: 120 A non-repetitive surge rating (tp = 10 ms) and 175 °C Tj allow sustained clamping during grid fault events without thermal runaway. |
| EV Onboard Charger PFC Stage | Air Conditioning Inverter Freewheeling |
|
Use Scenario: Boost diode in 6.6 kW single-phase OBC PFC front-end operating at 65–100 kHz with 400 V DC output. IC Role / Device Role / Timing Role: Unidirectional current path during boost switch off-time; recovers rapidly to prevent reverse conduction loss in discontinuous mode. Use Value: VF = 1.45 V max at 15 A/150 °C ensures <22 W conduction loss at full load, improving system efficiency by 0.4% over 1.7 V alternatives. |
Use Scenario: Freewheeling path for IPM output stage in variable-speed HVAC compressors (2–5 kW) with 300–450 V DC bus. IC Role / Device Role / Timing Role: Provides low-loss current return during IGBT dead-time; handles 15 A average current with minimal voltage overshoot. Use Value: DO-247's 1.5 °C/W Rth(j-c) enables direct heatsink mounting without thermal pads, reducing thermal stack-up by 2.5 K/W versus TO-220AC. |
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 |
|---|---|---|---|
| STTH15R06DJ | D²PAK HV package; same VRRM/IF(AV)/trr specs but higher creepage (5.38 mm) and lower Rth(j-c) = 1.3 °C/W. | Better suited for surface-mount automated assembly and tighter thermal constraints in space-constrained chargers. | Select when PCB real estate and reflow compatibility outweigh through-hole mechanical robustness. |
| IXYS MUR1560CT | TO-220AB dual common-cathode configuration; trr = 35 ns (max), VF = 1.7 V (max), Rth(j-c) = 2.0 °C/W. | Higher conduction and switching losses; requires larger heatsink and additional filtering for same EMI performance. | Consider only if dual-diode topology or legacy TO-220 footprint is mandatory; expect ~8% lower efficiency at full load. |
Compared with STTH15RQ06W, STTH15R06DJ offers superior thermal performance and SMT compatibility but less mechanical ruggedness, while MUR1560CT trades off efficiency and EMI for dual-diode integration and broad distributor availability.
Availability
STTH15RQ06W is available at Aetrix Electronics and suitable for LLC resonant converters, industrial UPS systems, and EV onboard chargers requiring stable component supply across multi-year production cycles.
Supply support for STTH15RQ06W 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 microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.
STTH15RQ06W belongs to ST's Turbo 2 ultrafast high-voltage rectifier family, engineered specifically for high-frequency, high-efficiency power conversion in resonant topologies and industrial power supplies.
FAQ
What is the maximum allowable case temperature for continuous operation?
The STTH15RQ06W is rated for IF(AV) = 15 A at TC = 115 °C. Exceeding this temperature requires linear derating per the datasheet curve (Figure 1). At TC = 130 °C, IF(AV) drops to ~12.5 A; operation above TC = 150 °C is not recommended for reliability.
Does STTH15RQ06W support paralleling for higher current handling?
Paralleling is not recommended due to inherent VF mismatch between units, which causes current imbalance and thermal runaway. For >15 A applications, use a single higher-rated device (e.g., STTH20R06) or redesign with interleaved phases instead of parallel diodes.
How does the DO-247 package compare thermally to TO-220AC?
DO-247 has Rth(j-c) = 1.5 °C/W versus TO-220AC's 1.8 °C/W, offering ~17% better thermal transfer. Its larger copper tab area and optimized internal bond wire layout reduce thermal impedance, enabling 10–15% higher power density in heatsink-limited designs.
Is top coating required to achieve the 5.38 mm creepage distance?
Yes-the 5.38 mm minimum anode-to-cathode creepage applies only when the DO-247 package is top-coated per ST's specification. Without coating, creepage drops to 3.48 mm. For reinforced insulation in 600 V AC systems, conformal coating per IPC-CC-830B Class 3 is mandatory.
STTH15RQ06W Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®
- Package/Case:
- DO-247-2 (Straight Leads)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 2.95 V @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 20 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-247
- Operating Temperature - Junction:
- 175°C (Max)
STTH15RQ06W FAQ
1.How can I place an order for STTH15RQ06W through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH15RQ06W 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 STTH15RQ06W reliable?
The price and inventory of STTH15RQ06W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH15RQ06W is usually 5 days.
3.What payment methods are accepted for STTH15RQ06W?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH15RQ06W transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH15RQ06W?
STTH15RQ06W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH15RQ06W 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 STTH15RQ06W?
For technical support, including STTH15RQ06W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH15RQ06W requirements.
6.How does Aetrix verify that STTH15RQ06W is sourced from the original manufacturer or authorized distributors?
All STTH15RQ06W 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 STTH15RQ06W meets industry standards.
7.What is the process for return or replacement of STTH15RQ06W?
All STTH15RQ06W units undergo pre-shipment inspection (PSI). If there is an issue with STTH15RQ06W, 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 STTH15RQ06W part is unused and in its original packaging.
Return procedure for STTH15RQ06W:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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