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STMicroelectronics STTH12R06DIRG
- Part No.:
- STTH12R06DIRG
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-220-2 Insulated, TO-220AC
- Datasheet:
-
STTH12R06DIRG.pdf
- Description:
- DIODE GP 600V 12A TO220AC INS
- Quantity:
- Payment:
- Shipping:
Inventory:386
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Product details
Overview
STTH12R06DIRG from STMicroelectronics is an ultrafast high-voltage silicon rectifier diode in insulated TO-220AC package, rated for 600 V repetitive peak reverse voltage and 12 A average forward current at Tc = 80 °C. It features 25 ns maximum reverse recovery time, 1.4 V typical forward voltage at 125 °C, and 3.3 °C/W max junction-to-case thermal resistance - optimized for continuous-mode PFC boost stages and hard-switching freewheeling applications in industrial power supplies.
For engineers reviewing the STTH12R06DIRG datasheet, STTH12R06DIRG pinout, STTH12R06DIRG application, or STTH12R06DIRG equivalent, key selection criteria include reverse recovery performance under dIF/dt stress (up to 200 A/µs), softness factor (0.2 typ.), low IRM (7.0 A typ. at 125 °C), and insulation rating (2500 VRMS) - critical for isolated high-voltage gate drive and safety-compliant AC-DC front-end designs.
Technical Context
This device implements ST's Turbo 2 600 V technology, delivering ultrafast switching with controlled soft recovery to minimize EMI and voltage overshoot during turn-off. Its low trr (25 ns max) and low Qrr (180 nC) reduce switching losses in high-frequency PFC converters operating above 65 kHz.
The insulated TO-220AC package provides 2500 VRMS isolation between the case and internal die, enabling direct mounting to heatsinks without additional insulating hardware. Thermal design is supported by Rth(j-c) = 3.3 °C/W (max), allowing stable operation up to 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Withstands 600 V repetitive reverse voltage, suitable for 400 V DC bus PFC and offline SMPS input stages. |
| IF(AV) | 12 A at Tc = 80 °C - Sustains 12 A average forward current with case temperature limited to 80 °C, enabling compact heatsink sizing. |
| trr (max) | 25 ns - Enables efficient operation in >100 kHz switching topologies while limiting turn-off loss and ringing. |
| VF (typ) | 1.4 V at Tj = 125 °C, IF = 12 A - Low conduction loss improves efficiency in high-current freewheeling paths. |
| IRM (typ) | 7.0 A at Tj = 125 °C, VR = 400 V, dIF/dt = −200 A/µs - Predictable peak reverse recovery current aids snubber design and MOSFET/IGBT voltage clamping. |
| S factor | 0.2 - Soft recovery behavior reduces EMI generation and dv/dt-induced false triggering in adjacent circuits. |
| Rth(j-c) | 3.3 °C/W (max) - Supports thermal management with standard heatsinks in insulated mounting configurations. |
| Isolation | 2500 VRMS - Meets reinforced insulation requirements for Class I equipment per IEC 60950-1 and IEC 62368-1. |
Pinout & Package
STTH12R06DIRG uses an insulated TO-220AC package with three terminals: Anode (pin 1), Cathode (pin 2), and electrically isolated metal tab (pin 3). The tab is internally connected to the cathode but electrically isolated from the PCB mount surface via molded epoxy insulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction path | Connected to AC/switching node side in boost PFC; must withstand full reverse voltage when off. |
| Cathode | Output terminal for forward conduction path | Connected to DC bus or inductor output; carries full load current and serves as reference for gate drivers. |
| Isolated Tab | Thermal interface with electrical isolation | Provides mechanical attachment and heat transfer to heatsink while maintaining 2500 VRMS dielectric barrier to PCB ground. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery | trr ≤ 25 ns enables high-frequency (>100 kHz) PFC operation with minimal switching loss and voltage overshoot. |
| Low thermal resistance | Rth(j-c) = 3.3 °C/W (max) allows 12 A operation with modest heatsinking in insulated mounting. |
| High insulation voltage | 2500 VRMS isolation supports safe, direct heatsink mounting in Class I AC-DC systems without mica washers. |
| Soft recovery characteristic | S factor = 0.2 minimizes EMI and prevents parasitic oscillation in high-dv/dt switching nodes. |
| Robust surge capability | IFS M = 100 A (10 ms, sinusoidal) handles inrush and transient overcurrents in power supply startup. |
Applications
| Industrial AC-DC Power Supplies | Server & Telecom Rectification |
|---|---|
|
Use Scenario: Boost diode in continuous-conduction-mode (CCM) PFC stage of 1–3 kW industrial power supplies. IC Role / Device Role / Timing Role: High-voltage rectifier conducting during switch-off phase; defines PFC efficiency and thermal budget. Use Value: 25 ns trr and 0.2 softness factor reduce switching losses and EMI, enabling compliance with EN 55022 Class B without oversized filters. |
Use Scenario: Output freewheeling diode in LLC resonant converter secondary synchronous rectification auxiliary path. IC Role / Device Role / Timing Role: Fast-recovery clamp for transformer leakage energy; operates at 300–500 kHz with high dIF/dt stress. Use Value: 7.0 A IRM at 200 A/µs ensures predictable voltage clamping across MOSFETs, preventing avalanche failure during transient load steps. |
| Motor Drive DC Bus Protection | Renewable Energy Inverters |
|
Use Scenario: Freewheeling diode across IGBTs in 3-phase VFD DC link for regenerative braking energy return. IC Role / Device Role / Timing Role: Bidirectional energy recirculation path during motor deceleration; subjected to repeated 100 A surge pulses. Use Value: 100 A non-repetitive surge rating and 175 °C max junction temperature support reliable operation under intermittent overload conditions. |
Use Scenario: Input rectifier in string-level PV optimizer DC-DC stage handling 600 V open-circuit photovoltaic input. IC Role / Device Role / Timing Role: High-voltage, high-reliability rectifier exposed to outdoor thermal cycling and partial shading transients. Use Value: 2500 VRMS insulation and −65 to +175 °C storage/operating range ensure long-term reliability in uncontrolled environmental enclosures. |
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 |
|---|---|---|---|
| IXYS MUR1260CT | 600 V, 12 A dual common-cathode configuration; trr = 35 ns (max); no insulation rating specified. | Requires external insulation hardware for heatsink mounting; higher trr increases switching loss in >80 kHz designs. | Select when dual-diode topology is needed and isolation is handled externally; avoid where board space or EMI constraints demand single-device insulation. |
| Vishay VS-12EWH06FN-M3 | 600 V, 12 A; trr = 22 ns (typ); Rth(j-c) = 2.5 °C/W; TO-247AC package; 2500 VRMS isolation. | Superior thermal performance and faster typical recovery, but larger footprint and higher cost than TO-220AC. | Prefer for thermally constrained 1.5–2 kW designs requiring <2.5 °C/W Rth(j-c); not suitable for legacy TO-220 footprint compatibility. |
Compared with MUR1260CT and VS-12EWH06FN-M3, STTH12R06DIRG offers optimal balance of insulation integrity, footprint compatibility, and cost for mid-power industrial PFC - trading minor trr margin for proven TO-220AC ins. manufacturability and qualification history.
Availability
STTH12R06DIRG is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, telecom rectification modules, and motor drive DC bus protection requiring stable component supply, long-lifecycle availability, and certified insulation compliance.
Supply support for STTH12R06DIRG 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, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
This device belongs to ST's Turbo 2 ultrafast rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in CCM PFC, UPS, and industrial SMPS where fast recovery, soft switching, and reinforced insulation are mandatory.
FAQ
What is the maximum allowable case temperature for continuous operation?
The STTH12R06DIRG is rated for 12 A average forward current at Tc = 80 °C. Exceeding this temperature requires derating per Figure 1 in the datasheet; at Tc = 100 °C, IF(AV) drops to approximately 9.5 A. Junction temperature must remain ≤175 °C under all operating conditions.
Does the insulated tab require thermal compound when mounted to a heatsink?
Yes - thermal interface material (TIM) is required between the insulated tab and heatsink to ensure effective heat transfer. The insulation layer does not impede thermal conduction, but air gaps significantly degrade Rth(j-hs); use silicone-based or phase-change TIM rated for >150 °C continuous operation.
Can STTH12R06DIRG replace STTH12R06D in existing designs?
No - STTH12R06D uses non-insulated TO-220AC and requires a mica washer or insulating pad for heatsink mounting. STTH12R06DIRG has integrated 2500 VRMS insulation and different mechanical dimensions (Table 8); PCB footprint and mounting torque (0.4–0.6 N·m) must be verified before substitution.
How does softness factor affect circuit reliability?
A softness factor of 0.2 indicates highly controlled, gradual current decay during reverse recovery - reducing di/dt-induced voltage spikes and electromagnetic interference. This prevents false triggering of nearby gate drivers and lowers stress on snubber components, extending system MTBF in high-density power assemblies.
STTH12R06DIRG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-2 Insulated, TO-220AC
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 2.9 V @ 12 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 45 ns
- Current - Reverse Leakage @ Vr:
- 45 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC ins
- Operating Temperature - Junction:
- 175°C (Max)
STTH12R06DIRG FAQ
1.How can I place an order for STTH12R06DIRG through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH12R06DIRG 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 STTH12R06DIRG reliable?
The price and inventory of STTH12R06DIRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH12R06DIRG is usually 5 days.
3.What payment methods are accepted for STTH12R06DIRG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH12R06DIRG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH12R06DIRG?
STTH12R06DIRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH12R06DIRG 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 STTH12R06DIRG?
For technical support, including STTH12R06DIRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH12R06DIRG requirements.
6.How does Aetrix verify that STTH12R06DIRG is sourced from the original manufacturer or authorized distributors?
All STTH12R06DIRG 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 STTH12R06DIRG meets industry standards.
7.What is the process for return or replacement of STTH12R06DIRG?
All STTH12R06DIRG units undergo pre-shipment inspection (PSI). If there is an issue with STTH12R06DIRG, 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 STTH12R06DIRG part is unused and in its original packaging.
Return procedure for STTH12R06DIRG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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